Re: [CentOS] livemedia-creator --make-pxe-live CentOS 7
Oh, alright my specific issue is just about creating the actual pxe image.. not what happens after -Original Message- From: CentOS On Behalf Of R C Sent: Thursday, December 26, 2019 12:18 PM To: centos@centos.org Subject: Re: [CentOS] livemedia-creator --make-pxe-live CentOS 7 I have "issues" with later versions of Centos/RHEL 7 also. PXE boot seems to work, but after the new kernel kexec's, it seems to drop the NICS and further in the process for some reason, the nics never come up, which leads to all kindsof issues of course (trying to boot a cluster that way). I also have the impression that it is a dracut issue, however, I have not pinpointed it yet. Ron On 12/26/19 9:57 AM, Drew Weaver wrote: > Hello, > > I am trying to build a PXE boot image for CentOS 7. > > livemedia-creator --make-pxe-live --ks=ks --no-virt > > It runs the entire process and then it says: > > losetup: /dev/: detach failed: Inappropriate ioctl for device > 2019-12-26 11:49:47,293: Disk Image install successful > 2019-12-26 11:49:47,293: working dir is /var/tmp/tmpKwqC77 > mount: /dev/loop0 is write-protected, mounting read-only > mount: unknown filesystem type '(null)' > 2019-12-26 11:49:52,301: Command '['mount', '-o', 'loop', > '/var/tmp/diskJVpsJd.img', '/var/tmp/lorax.imgutils.OtV8Yh']' returned > non-zero exit status 32 > > I then tried it on CentOS 8 and had the same problem until I installed the > dracut-live package but that package doesn't exist on CentOS 7. > > I will point out that it seems to work fine with make-iso, just not > make-pxe-live. So there is probably a package it needs that I don't know > about. Has anyone gotten this to work at all? > > Since it is a disk/image issue this is the part of the ks relevant to disks: > > # Disk partitioning information > reqpart > part / --fstype="ext4" --size=4000 > part swap --size=1000 > zerombr > clearpart --all > bootloader --location=mbr > > Below is my packages part of my kickstart: > > %packages > # Packages needed by anaconda, but not directly required. > # Includes all of the grub2 and shim packages needed, except > # for the grub2-efi-*-cdboot package > @anaconda-tools --optional > @core > anaconda > isomd5sum > kernel > memtest86+ > syslinux > -dracut-config-rescue > dell-system-update > # This package is needed to boot the iso on UEFI > grub2-efi-*-cdboot > grub2-efi-ia32 > %end > > Thanks, > -Drew > > ___ > CentOS mailing list > CentOS@centos.org > https://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] livemedia-creator --make-pxe-live CentOS 7
Hello, I am trying to build a PXE boot image for CentOS 7. livemedia-creator --make-pxe-live --ks=ks --no-virt It runs the entire process and then it says: losetup: /dev/: detach failed: Inappropriate ioctl for device 2019-12-26 11:49:47,293: Disk Image install successful 2019-12-26 11:49:47,293: working dir is /var/tmp/tmpKwqC77 mount: /dev/loop0 is write-protected, mounting read-only mount: unknown filesystem type '(null)' 2019-12-26 11:49:52,301: Command '['mount', '-o', 'loop', '/var/tmp/diskJVpsJd.img', '/var/tmp/lorax.imgutils.OtV8Yh']' returned non-zero exit status 32 I then tried it on CentOS 8 and had the same problem until I installed the dracut-live package but that package doesn't exist on CentOS 7. I will point out that it seems to work fine with make-iso, just not make-pxe-live. So there is probably a package it needs that I don't know about. Has anyone gotten this to work at all? Since it is a disk/image issue this is the part of the ks relevant to disks: # Disk partitioning information reqpart part / --fstype="ext4" --size=4000 part swap --size=1000 zerombr clearpart --all bootloader --location=mbr Below is my packages part of my kickstart: %packages # Packages needed by anaconda, but not directly required. # Includes all of the grub2 and shim packages needed, except # for the grub2-efi-*-cdboot package @anaconda-tools --optional @core anaconda isomd5sum kernel memtest86+ syslinux -dracut-config-rescue dell-system-update # This package is needed to boot the iso on UEFI grub2-efi-*-cdboot grub2-efi-ia32 %end Thanks, -Drew ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] [OT] PXE Boot / image server for non-profit's computers
-Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of m.r...@5-cent.us Sent: Tuesday, April 08, 2014 3:21 PM To: CentOS mailing list Subject: Re: [CentOS] [OT] PXE Boot / image server for non-profit's computers Jason Pyeron wrote: This is the best collection of minds I can think of on this topic, that's why it is on this list. I think it is too subjective for stackoverflow. So here is the problem: The community center has multiple computers for the children (and adult students) to use. These computer are always donated and the hardware is all different. Currently the systems are running Windows (but this may change). Most days the systems are hacked by the kids and all is well, but sometimes the changes to the systems requires a reinstall. The staff are not presently qualified to diagnose any problems. Here is the draft idea: 1. Have a CentOS image / PXE server. This works *really* well - it's how I build/rebuild new servers and workstations. We've got a cgi script that creates a ks file, and we get it started, choose what we're building, and walk away. In somewhere between a dozen and 30 min, it's up, knowing its name, etc. 2. Make a (bootable) utility CD that: * has a program to save the state of the computer to the image server You *really* might want to do that before pxeboot rebuilding it... for legal reasons. He could also always just chain pxeboot the imager to create the backup and then the installer to install the new OS. -Drew ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 6.5 install
You can simply create two virtual disks from the single RAID-5 volume. Create one that is like 500GB for the OS volume and then create a 2nd one which uses the remainder of the space. -Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Kenny Noe Sent: Wednesday, February 26, 2014 3:02 PM To: centos@centos.org Subject: [CentOS] CentOS 6.5 install Hello, I'm a newbie so here's my question. I'm trying to install CentOS 6.5 on a HP Proliant 350e server. This server has 4x 1TB hard drives. I'd like to enable the hardware RAID 5 and stripe all 4 disk into one 3TB logical volume. Then install CentOS on the 3TB volume. However after I install I can't get the server to boot. I know about the MDOS vs GPT labeling issue. I've successfully installed on one (singular) 3TB disk on other servers. I have modified the partition tables, relabeling them to GPT, prior to completing the installs. However I've read that the Anaconda installer still tries to format as MDOS and after installing a Basic server I cannot get it to boot. So, what am I missing? Can I load CentOS on a hardware RAID 5 volume that is 3TB (usable) or am I stuck with what most Google searches say and load the OS on one disk and then after use software RAID to RAID 5 the remaining 3 disk into a /data directory? All help is appreciated. Thanks--Kenny ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] LSI MegaRAID experience...
If these drives do not have TLER do not use them with LSI controllers. -Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of John Doe Sent: Friday, July 19, 2013 5:13 AM To: CentOS mailing list Subject: Re: [CentOS] LSI MegaRAID experience... The thing that bothers me is that the ctrl sees all the drives at first, later does not see some anymore, and he just forgets about them like they never existed. I would have expected to still see them but in a failed state... Here, megacli just lists info for the remaining drive(s). So I miss all the post mortem info like the SMART status or the error counts if they had any... Am I missing an option to add to megacli to show the failed ones too maybe? Having used HP raid ctrls, I am used to see all drives, even failed ones. Anyway, Ill have to check the drives, backplane and cabling... Thx for all the answers, JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] LSI MegaRAID experience...
Not sure about TLER on those Plextors... This is what megacli says: Enclosure Device ID: 252 Slot Number: 0 Drive's position: DiskGroup: 0, Span: 0, Arm: 0 Enclosure position: N/A Device Id: 0 WWN: 4154412020202020 Sequence Number: 2 Media Error Count: 0 Other Error Count: 0 Predictive Failure Count: 0 Last Predictive Failure Event Seq Number: 0 PD Type: SATA Raw Size: 119.242 GB [0xee7c2b0 Sectors] Non Coerced Size: 118.742 GB [0xed7c2b0 Sectors] Coerced Size: 118.277 GB [0xec8e000 Sectors] Sector Size: 0 Logical Sector Size: 0 Physical Sector Size: 0 Firmware state: Online, Spun Up Commissioned Spare : No Emergency Spare : No Device Firmware Level: 1.02 Shield Counter: 0 Successful diagnostics completion on : N/A SAS Address(0): 0x44332211 Connected Port Number: 0(path0) Inquiry Data: P02302103634 PLEXTOR PX-128M5Pro 1.02 FDE Capable: Not Capable FDE Enable: Disable Secured: Unsecured Locked: Unlocked Needs EKM Attention: No Foreign State: None Device Speed: 6.0Gb/s Link Speed: 6.0Gb/s Media Type: Solid State Device Drive: Not Certified Drive Temperature : N/A PI Eligibility: No Drive is formatted for PI information: No PI: No PI Port-0 : Port status: Active Port's Linkspeed: 6.0Gb/s Drive has flagged a S.M.A.R.T alert : No Apart from that, I found the lsi events logs... Command timeout on PD 00(e0xfc/s0) . . . PD 00(e0xfc/s0) Path ... reset Error on PD 00(e0xfc/s0) State change on PD 00(e0xfc/s0) from ONLINE(18) to FAILED State change on VD 00/0 from OPTIMAL(3) to DEGRADED(2) Command timeout on PD 00(e0xfc/s0) PD 00(e0xfc/s0) Path ... reset State change on PD 00(e0xfc/s0) from FAILED(11) to UNCONFIGURED_BAD(1) . . . Exact same behavior for the 2 servers and 3 SSDs... So it seems the ctrl changes them first to failed and then to unconfigured... --- We have experienced similar behavior with (to be blunt, non Intel) SSDs and with spinning rust (without TLER) on Dell PERC controllers (which are the same as LSI controllers) the drives simply fall out of the raid arrays they are in after a random period of time. This seems to just happen with certain SSDs, in the beginning we pushed very hard to try and understand why; now we just use different SSDs. The ones we've had problems with are: OCZ Vertex, Samsung 840/840 pro, etc Ones we've never had issues with are: Intel 520, Intel S3700 I know this doesn't really help you, but you could see if using a different SSD makes the problem go away. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] LSI MegaRAID experience...
John Doe wrote: From: Drew Weaver drew.wea...@thenap.com If these drives do not have TLER do not use them with LSI controllers. Not sure about TLER on those Plextors... snip TLER would only show up on something that looks at a *very* low level on the physical drive. What I know is that you can see it with smartctl - from the man page: scterc[,READTIME,WRITETIME] - [ATA only] prints values and descriptions of the SCT Error Recovery Control settings. These are equivalent to TLER (as used by Western Digital), CCTL (as used by Samsung and Hitachi) and ERC (as used by Seagate). READ- TIME and WRITETIME arguments (deciseconds) set the specified values. Values of 0 disable the feature, other values less than 65 are probably not supported. For RAID configurations, this is typically set to 70,70 deciseconds. Note that knowing this was the result of a *lot* of research a couple-or so years ago. One *good* thing *seems* to be WD's new Red line, which is targeted toward NAS, they say... because they've put TLER back to something appropriate, like 7 sec or so, where it was 2 *minutes* for their desktop drives, and they disallowed changing it in firmware around '09, and the other OEMs followed suit. What makes Red good, if they work, is that they're only about one-third more than the low-cost drives, where the server-grade drives are 2-3 *times* the cost (look at the price of Seagate Constellations, for example). I would also like to note that up until Red were released to had to use RE to get TLER, and now apparently RE, SE, and RED (cost in that order) all support TLER. The thing that worries me about RED is that they're listed as only supporting up to 5 drives in an array, -- how are they limiting that? I think they probably could've just merged RED and SE into one line of drives but I guess they limited RED to 3TB so if you want a 4TB part you have to get the SE. Something in the back of my mind tells me that RE, SE, and Red are the exact same hardware with different FW. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Kickstart just create /boot, recommended swap and / with whatever is left.
Howdy, The default partitioning scheme appears to be: swap /boot / small amount of space /home remainder of space. Is there any way via kickstart to have it just create swap with the recommended size, /boot, and then just / with the remainder without manually specifying the names of the lvs/vgs etc? I figured there would be an autopart -atomic option but that doesn't seem to exist. Any advice? Thanks, -Drew ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Kickstart just create /boot, recommended swap and / with whatever is left.
Drew Weaver wrote: Howdy, The default partitioning scheme appears to be: swap /boot / small amount of space /home remainder of space. Is there any way via kickstart to have it just create swap with the recommended size, /boot, and then just / with the remainder without manually specifying the names of the lvs/vgs etc? I figured there would be an autopart -atomic option but that doesn't seem to exist. --- Where'd you get the kickstart? You can certainly set it up any way you want, though a large /home seems reasonable if you've only got one drive, unless you want /boot, swap, and /. Btw, the old received wisdom was that swap should be 2-2.5 times RAM; for some years now, though, it's been just 2G, and leave it at that. I just used the 'autopart' command in the kickstart and it automatically put most of the storage in /home. I believe in CentOS 5 the autopart command just did swap /boot and / I realize I can manually partition all 60 of these servers but I'm trying to avoid that also like I said I would prefer not to set the lv/vg names in the kickstart.. Would've been cool if you could just do autopart -atomic like you can with Ubuntu. Thanks, -Drew ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] an actual hacked machine, in a preserved state
If attack A is 1,000 times more likely to work than attack B, you don't think it's more important to guard against attack A? It's not either/or here. You could be the guy who gets hit by lightning. I'm not sure I entirely agree with you there Les. I'm not going to delve into the intricacies of Cost / Benefit analysis (it made my head spin in my accounting school days) but basically, protecting against threats is in part a case of weighing the costs of setting up the protection vs the benefits of being 'immune' to such an attack adding in a dash of probability and stirring the whole mess in a black cauldron. What comes out is what the Bean counters consider an acceptable cost for that protection. Case in point, I have several web servers sitting in a rack in our server room. I'm more likely to suffer an attack on my key infrastructure through a compromised web server then I am through someone breaking down the door and entering the room. If I asked for a security system that included bio-metric access control systems, I'd be laughed at and denied. OTOH, I have a firewall with a DMZ that is both physically and logically isolated from the internal network and has IDS/IPS running on all traffic passing through. At the end of the day, there are finite resources anyone can spend protecting their organization and sometimes, hard choices have to be made. We have threats X, Y, and Z but only enough to protect against 2 of them. Which ones would you chose to protect? -- Drew ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] what percent of time are there unpatched exploits against default config?
It's been an interesting if somewhat heated discussion. Figures the fun ones come up when I'm away. ;) The discussion of using Certs(PKI) vs Passwords to secure SSH seem to be missing an important piece of the puzzle, and that to my mind is attack vectors target value. The argument I saw against PKI is that's it's no more secure then regular passwords because your certificates are password protected anyways and stored on external media so they can be stolen and used to access the system. Like the OP I run a web server (two in my case) and I have external SSH access for certain reasons. I've got things like fail2ban installed, various logwatch type software running to alert me to any abnormal entries. I also have cert based access to my machine. In my case, the primary attack vector for hackers getting at my servers is via the web. Because I host primarily personal websites on my servers, the hackers motivation for breaking into my server (aside from 'it's there') is to turn the machine into a bot-net or host some viagra phishing sites on it. The concern, for me, is more about remote compromise then about physical theft of my usb token. A russian hacker who want's another compromised machine for his bot-net or phishing ring is probably not going to go to the effort of physically flying over here from Europe and spend the time needed to track me down, break into my office, and steal my usb token. He's more likely to move onto another target one of his script-kiddies found for him. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] what percent of time are there unpatched exploits against default config?
I'm in much the same situation, and would like to protect myself to a minimal extent. But I don't understand how a usb token (below) would help. The 'token' in this case (a standard usb thumbdrive) is merely a portable container for my ssh certificates and a copy of putty (when I'm on a windows box). You don't need it if you never move around. What matters is the use of the certificate. Token may have been the incorrect word as RSA's keyfobs are sometime called tokens. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] what percent of time are there unpatched exploits against default config?
IP address allocation needs to be done smarter so that geographical regions can be isolated easier. And at some point it probably will be. There already is that capability to some extent. Between geoip and the RIR's, one can get a pretty good handle on which /8 or /16 blocks need to be blocked at your firewall. In fact the linux based router's we use have a specific Country Blocking feature which I use to block large swathes of the Net from our systems. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Unplugging DVI causes Disabling IRQ #11
I posted this as a bug to redhat's bugzilla I think in January of 2011. -Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Scott Johnson Sent: Friday, December 09, 2011 11:39 PM To: centos@centos.org Subject: [CentOS] Unplugging DVI causes Disabling IRQ #11 I have some new PC hardware I'm using with the Intel H67 chipset. I created a bzImage I use for a PXE environment for a recovery mode, installing OS images, etc. The new mobo doesn't have a VGA port but instead DVI. Everytime I unplug the DVI cable it seems to cause Disabling IRQ #11. After that the PC is basically unusable. The /proc/interrupts shows that hdd, usb, nic, RAID controller for some reason all share the same interrupt. What the heck? I tried booting with acpi=off and the bios doesn't seem to offer any IRQ/PnP options. Am I missing a specific driver in my bzImage for the H67 chipset or any ideas of what I could try next? It's been a sad day. bash-2.05b# cat /proc/interrupts CPU0 0: 15185951XT-PIC-XTtimer 1: 4XT-PIC-XTi8042 2: 0XT-PIC-XTcascade 7: 75XT-PIC-XTehci_hcd:usb2 8: 1XT-PIC-XTrtc 11:2090574XT-PIC-XTahci, ehci_hcd:usb1, eth0, rr172x I even see a similar error on a fresh CentOS 5.7 install: irq 169: nobody cared (try booting with the irqpoll option) Call Trace: IRQ [800bdf66] __report_bad_irq+0x30/0x7d [800be1a4] note_interrupt+0x1f1/0x232 [800bd6a5] __do_IRQ+0xfa/0x140 [8006d4c1] do_IRQ+0xe9/0xf7 [8005d615] ret_from_intr+0x0/0xa EOI [801a2220] acpi_safe_halt+0x25/0x36 [801a2a88] acpi_processor_idle_simple+0xe6/0x31c [801a29a2] acpi_processor_idle_simple+0x0/0x31c [80048fe2] cpu_idle+0x95/0xb8 [80078a9a] start_secondary+0x479/0x488 handlers: [801fc748] (usb_hcd_irq+0x0/0x55) Disabling IRQ #169 Thanks for any help. -ScottEJ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] iSCSI best practices
no, its done with replication over a private channel between the storage controllers. standard feature on all redundant controller hardware/appliance storage controllers such as IBM DS series, HP MSA, etc etc. EMC Clariion CX/CX3/CX4 and VNX, also. Ditto D-Link's DSN-5110 series. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] iSCSI best practices
Isn't that D-Link DSN-5110 series a rebadged Dot Hill box? Rebranded iStor Networks iS512. Incidentally iStor was bought out by Promise so they now OEM the product line for D-Link. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] When will 6.2 be released.
I think this was an attempt at humour, but it didn't work very well. :) For a second I thought it was a sarcastic troll. Then I saw Johnny's name on the email. It gave me a smile and a chuckle. Seriously tho folks. Please let's not get into that flaming thread yet again. :) -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Changes at Red Hat confouding CentOS
Agreed! The cramped screen space (I run dual vid cards in sli with 4 monitors with development apps spread all over them!), sluggish response (open what I have running on my work station and any laptop goes into crawl mode), heat (if you really run it in your lap as the name infers) and that just touches on the very start of my list. Yes, I have few laptops and use them when I 'need' to and one often times goes with me when I leave my office (but my phone is rapidly replacing that need unless I'm going for days)... but why on earth would I consider using only a laptop? Well, if I was always mobile, but I'm not. Maybe if I didn't need to run any development systems... Eclipse on a laptop certainly works, but is sluggish vs. a workstation. Open Dreamweaver, Photoshop, Eclipse, three web browsers a secure shell or few, email, IM, and then need to open a Word attachment and most laptops chug to worst than a crawl. And the funny thing, from my perspective at least, is that I'm sitting beside a laptop that routinely has several VMware VM's running (XP Server 2008r2), several line of business applications open, and has dreamweaver *and* gimp running in the background. :) All this on a two year old i3 w/ 6GB RAM. Set me back around $900. Larger screen? VGA or HDMI outputs. ;-) Nothing quite beats working on a 55 HDTV in your living room, especially when I have time for STO. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Running Apache sites as separate users
I think Trey needs to push back - *IF* I understand him correctly, it sounds like duplicate websites, but running as different users. That, to me, literally makes no sense..., unless a) the source of the request doesn't understand what he wants, or b) there's something illegal going on, and users going to a different site have different things happening, based on data/database content. The way I interpreted it he want's it setup so each domain (example1.com, example2.com, etc) to each runs it's own Apache server under an unprivileged login (apache1, apache2, etc). Chroot's should accomplish that easy enough. He then wants to use the same CMS (Joomla, Wordpress, etc) on each site. My assumption is he's hosting several CMS sites and want's each isolated so a compromise of one won't compromise the others. What is confusing is what he means by 'codebase?' Does he want each chroot to have it's own independent copy? Or does he want to share the CMS core files across all instances? -- Drew ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Can't boot Centos6 ext4 partition from GAG bootloader
there any way tp persuade Centos-6 to use an ext3 root partition? Seems not, so - sadly - have crossed Centos off my list. Did the installer try to install /boot in the same partition as / ? CentOS6/SL6 does support ext4 as a root device (My webserver is currently doing so) but I still keep /boot as ext3. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 6.1 Update request
Step-1, get the major security stuff into 6.0/cr/. Step-3, Profit. ;-) -- Drew This started out as a hobby and spun horribly out of control. -Unknown ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS5 with Dell Broadcom iSCSI Offload, does it work ?
Hi, I could be wrong here but don't you go into the Broadcom NIC configuration while the server is booting and add the iSCSI target in there and then it should appear as Just Another Volume (TM) to the operating system? I've never tried it but I assume thats how the 'offloading' works. thanks, -Drew -Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Antonio da Silva Martins Junior Sent: Friday, September 09, 2011 8:01 AM To: CentOS mailing list Subject: [CentOS] CentOS5 with Dell Broadcom iSCSI Offload, does it work ? Hi all, After finding multiples answers to this question via google, but without making it work on my servers. Has anybody iSCSI Offload working on a Dell Server with Broadcom NICs ? My environment: I'm running CentOS 5.6 CR, on a Dell PowerEdge R710 with Broadcom Corporation NetXtreme II BCM5709 conecting to an EMC CX4-120 SAN, via 2x Cisco 2960G-24TC-L switches. It's working without the iSCSI offload. Thanks in advance, Antonio. -- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Antonio S. Martins Jr. - Support Analyst | Only The Shadow Knows | | Universidade Estadual de Maringá - Brasil| what evil lurks in the | | NPD - Núcleo de Processamento de Dados | Heart of Men! | | E-Mail: asmart...@uem.br / sha...@uem.br | !!! Linux User: 52392 !!! | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Real Programmers don’t need comments — the code is obvious. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Where are the CentOS 6 security updates?
Note that this reply is not designed to stir up a bunch of list trolls and this thread degenerating into a pissing contest isn't going to help anyone. I'll just cue the drum-roll. :-) -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 6.0 and 3ware 9650SE series RAID Performance
I don't know how either of us could have made our opinions any more clear... Just curious dude. perform like hell could go either way. Don't use the 3ware/LSI SATA RAID controllers in RAID 5 or RAID 6 mode if performance and reliability are of concern. I only use hardware RAID because performance and reliability are my concern. I am told that the Areca cards are much better on RAID 5/6 but I have no first hand experience with them. While you may get better performance with write-back caching (don't enable without a BBU), the improvement is incremental. Stick with RAID 10. Somebody at IBM must not have gotten the memo then as the M5015/9260-8i is their top of the line on-board RAID controller. :-) -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 6.0 and 3ware 9650SE series RAID Performance
Additionally I can confirm as I also have several lsi cards and all perform like hell in r5/6 even with bbu. Is that the fast as hell or slow as hell kind? I ask because I have a couple of IBM M5015 (rebranded LSI 9260-8i) controllers that I run in RAID-10 and as I'm somewhat on a budget for disks (coming home with $1200 worth of 15k SAS drives will get me shot) I'd rather run a RAID-5/6 array if the performance degradation is minimal. And yes, mine do have the BBU. ;-) Not that the performance of an 8x80GB SATA-300 array is much to write home about in the first place, but for my purposes it works fine. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: Hardware upgrade help
What determines if it's a 64 bit machine? Dual core? Dual core = 2 CPUs effectively. Quad core = 4 CPUs on the same piece of Silicon 64 bit = more advance instruction set which replaces all the older 32 bit instruction set CPUs. 64 bit is more modern than 32 bit and that is the way software is going. 64bit doesn't specifically make it more advanced. 64bit CPU's just support for a larger memory addressing space then 32bit CPU's, beyond the 4GB limit of 32bit addresses. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: Hardware upgrade help
The older ISA (now called PATA = Parallel ATA) has been replaced by SATA (Serial ATA). SATA has 3 speeds. Most new disks are either SATA 2 or SATA 3 speed. IDE I assume you meant. :) ISA was the old bus PCI replaced. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Cursor disappear when entering WINE application
Install Open Office. It is supposed to be 100% compatible with M$ Office and you are unlikely to lose your cursor. It is in the usual repositories. Maybe Office 97. :P We used it in some limited form during the last few years (Boss wanted to save on costs) and while it's *okay* at handling documents up to Office 2003 (xls, doc, ppt) it chokes on anything made i Office 2007/2010. And as our parent company uses 2010... -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie This started out as a hobby and spun horribly out of control. -Unknown MGen Dorlan Kwase UFPSFMC Deputy Judge Advocate General 9th MARDIV Commander, Ret. Federation 9th (Obsidian) Fleet Captain Anise Denevre UFPSF CO, USS Wolff NCC-80140 Federation 9th (Obsidian) Fleet ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] [SOLVED] How to remove Microsoft soft raid?
Whatever raid metadata was written by WinXP-64 was destroyed and I was able to do a proper install of CentOS 6. I'd still strongly recommend, if you haven't done so, check your BIOS to make sure your SATA controller doesn't have RAID mode enabled. I've seen the odd weird interaction between Linux, the BIOS, and the SATA controller (especially early non-Intel ICH family) that was traced back to that setting. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] non PAE support
I wonder then what people would think about my running SL6 (centos 6 wasn't out yet) on an old P3-866 Toughbook w/ 768MB RAM? :) Only machine in my inventory that I can drag *everywhere* and still doesn't complain. -- Drew ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] non PAE support
I was pleased as most of that era toughbook had 256 or 512 if you were lucky. I upgraded the drive to 80GB and I dual-boot XP for a couple apps. Fun machine. My first linux box, a Redhat 4 machine, ran on a Pentium-133 and had 32megs when I got it. RH6 wouldn't install and I had to custom compile a NIC driver that wasn't included in the stock kernel. That was with maybe three days experience. :-) -Drew On 07/27/2011, Scot P. Floess sflo...@nc.rr.com wrote: Oh wow 768 MB - nice. My laptops have 256 MB and 384 MB - how's that for old :) On Wed, 27 Jul 2011, Drew wrote: I wonder then what people would think about my running SL6 (centos 6 wasn't out yet) on an old P3-866 Toughbook w/ 768MB RAM? :) Only machine in my inventory that I can drag *everywhere* and still doesn't complain. -- Drew ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Scot P. Floess RHCT (Certificate Number 605010084735240) Chief Architect FlossWare http://sourceforge.net/projects/flossware http://flossware.sourceforge.net https://github.com/organizations/FlossWare ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Sent from my mobile device Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie This started out as a hobby and spun horribly out of control. -Unknown MGen Dorlan Kwase UFPSFMC Deputy Judge Advocate General 9th MARDIV Commander, Ret. Obsidian Fleet ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to remove Microsoft soft raid?
From the sounds of it it's fake raid. M$ doesn't leave any signatures on their raid system that linux will detect. dm/md raid can see fakeraid signatures in newer versions so the installer may be picking up on that. -- Drew On 07/21/2011, Robert Heller hel...@deepsoft.com wrote: At Thu, 21 Jul 2011 07:24:19 -0400 CentOS mailing list centos@centos.org wrote: Have a quad core workstation that was running WinXP_64 that I want to blow away and install CentOS 6. C6 install process finds raid metadata associated with sda and sdb, and then excludes them from the rest of the installation process. There doesn't appear to be an option for disassembling the raid as part of the install process. I think there should be. Any tricks to removing/by-passing the soft raid left over from the previous OS? Is this pure WinXP_64 software RAID or BIOS-assisted 'fakeraid'? If the latter, go into the BIOS and change its settings from 'RAID' to 'AHCI' or other 'native' SATA mode. The only other thought would be to use a Live CD to clobber the disks (eg using fdisk or 'dd if=/dev/zero of=/dev/sda' or something). It might also be possible to get to a shell process with Alt-F2 in the installer and using fdisk, etc. to clobber the disks -- do this *before* screen where it asks about partitioning, etc. Dave M ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Robert Heller -- 978-544-6933 / hel...@deepsoft.com Deepwoods Software-- http://www.deepsoft.com/ () ascii ribbon campaign -- against html e-mail /\ www.asciiribbon.org -- against proprietary attachments ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Sent from my mobile device Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie This started out as a hobby and spun horribly out of control. -Unknown MGen Dorlan Kwase UFPSFMC Deputy Judge Advocate General 9th MARDIV Commander, Ret. Obsidian Fleet ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] About I386 not fitting on one DVD
really, we should have compiler targets for optimizing on the P4 'netburst' CPUs and another for the core processors as they are all pipelined differently. as it turns out, however, the core 2 and core I3/5/7 do pretty well with pentium-II and -III style optimization strategies, as well as, of course, the x86_64 support. gcc does have compiler flags (read up on -march -mtune) for optimizing to specific families of Intel CPU's. The problem is that the performance improvement of tuning say an i7 to it's family(-march=corei7) vs a generic i686 tune(-march=i686) is minimal (less then 1% in benchmarks I've seen) and not worth the extra complexity of managing entire branches of packages for specific processor families. It makes sense however for the x86 vs x86-64 as there's some pretty fundamental differences there. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] firewall?
That being said, one should *never* create firewall with only one NIC! It is highly unsafe. So I shouldn't run a firewall on any of my hundreds of single nic instances? I think he's referring to the standard router/firewall scenario where the server is an internet gateway for a network. There I'd consider a single interface system as inherently insecure. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] firewall?
not to mention danger of PC's bypassing your one-NIC firewall and unsafely connecting to the outside. That I think is the biggest danger with a one NIC setup. Linux boxen may be safe(r) (then windows) from being infected or hacked but just one malicious machine can bypass the security in place if you don't logically *and* physically separate your subnets. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] About I386 not fitting on one DVD
If the I386 (or i686, never could figure out why the name change) I think on CentOS/RHEL it's because they dropped support for the 586 earlier processors. Linux wide there's been a general drop in support for 386 class machines. Something to do with recent versions of glibc and a instruction only present in the 486 and better. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Suggest Hardware Raid Controller Card
When you say It shows usable disk space of approx 940 GB, do you mean the array is 940 GB or the logical drive inside the array is 940GB? And I think on such controller you can have 2 logical drives max... On our IBM's it shows the size of the logical drive it presents to the OS. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Problem with net-install
CentOS 6 was not really intended for slower systems, none of the newer distros are. CentOS 6 kernel for example does not support 586 CPU's. I'd like to know where you read that because I'm looking at putting CentOS 6 onto a couple of lower end boxes, specifically a P3-800(mobile) and an older VIA EPIA, which are fully supported in CentOS 5. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Suggest Hardware Raid Controller Card
A true hardware RAID controller would probably cost almost as much as the server itself. Just about all of the cheap (so called) SATA RAID controller cards are some flavor of fakeraid. A few are supported as DM Raid under Linux, but many are not. Which is funny because Intel's SASUC8i (rebranded LSI3082E-R) is true hardware RAID which I recently picked up *new* for $150. They don't do RAID-5/6 or have a BBU but IMO you don't need a BBU for RAID-0/1/10. Where can you pickup a new server for $150? :-P -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Suggest Hardware Raid Controller Card
Which is funny because Intel's SASUC8i (rebranded LSI3082E-R) is true hardware RAID which I recently picked up*new* for $150. They don't do RAID-5/6 or have a BBU but IMO you don't need a BBU for RAID-0/1/10. you want BBU (or flash-backed cache) if you want write-back cache, and not mandate write-through. This is quite independent of the RAID type. It greatly speeds up 'committed' random writes such as are generated by a transactional database. I stand corrected in that area. Tho, even upgrading to a LSI MegaRAID 9260 w/ BBU only brings you into the $1000 price range so unless you're buying $1000 pizza boxes from Supermicro (not knocking the brand, I use their kit at home ) that's still not even close to the price of a decently spec'd IBM or HP server. Of course our spec comes in around $6k per box. ;-) -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie This started out as a hobby and spun horribly out of control. -Unknown MGen Dorlan Kwase UFPSFMC Deputy Judge Advocate General 9th MARDIV Commander, Ret. Obsidian Fleet ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS and Bandwidth
-Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Michael Peterson Sent: Sunday, July 10, 2011 9:15 AM To: centos@centos.org Subject: [CentOS] CentOS and Bandwidth I am looking forward to using CentOS 6 soon. I have the torrent running to download and help others download it. I am trying out Scientific Linux 6 while awaiting the arrival of CentOS 6. It took a lot of work to get it installed and configured on a system. I plan to run them both on 2 systems and see what happens. I look forward to the release of CentOS 6.1 soon also. Let me know where I can browse to see if I can help in any areas other than the torrent. If I have a T1 size pipe going out what is my max possible kB out? I have the torrent turned up to 100kB and my VPN still seems responsive. Thanks for all the hard working in getting this release ready. Good job on getting CentOS 5.6 out first however. == 1,540,000 (bps) / 8 * .90 = your maximum throughput in Bps. thanks, -Drew ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Power-outage
Robert Heller suggested that UPS architecture matters: AC-DC::DC Batteries::DC-AC Where input AC is electrically decoupled from output AC. Not many adverts for UPS's explain whether this is the case with their UPS. APC's SmartUPS line, Liebert, and Eaton Powerware are all true-sine wave UPS's, and do proper decoupling. Unfortunately, this kind of data doesn't make for great ad copy, so it's left out, and you have to dig deep into datasheets to get that information. I pretty much only use APC, and we have truly crap power here. Because of some heavy industry in the area, brownouts are common, and that'll kill a PC power supply better than anything. I've pulled one 7 year old APC from a server closet where the lightning took the top of the telephone pole OFF. THE UPS was fried, some of the breakers in the building were fused (!), but the servers were fine, outside of the router that got zapped from the DSL modem. I beg to differ about APC. The accepted term for what Robert described is a double conversion or online UPS. APC's SmartUPS family is only available with the double conversion feature if you specify a SmartUPS Online model. The rest of the SmartUPS family use Line Interactive which runs on mains power until the voltage/current/frequency goes out of tolerance, at which point they cut over to battery. The Liebert GXT2/3 family which we use quite a bit of were, until recently, strictly double conversion. -- Drew This started out as a hobby and spun horribly out of control. -Unknown ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Still having umask problems [resend]
My goal is to have any created directories and files to have 774
permissions.
Hi Todd,
Am I correct in assuming the php script that creates the directory
uses the mkdir() function? If so something along the lines of:
mkdir('mydir', 0774); should suffice. The 0 can be changed to 2, 4 or
6 depending on what combination of SGID SUID sticky bits you want on
the directory.
--
Drew
___
CentOS mailing list
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Re: [CentOS] Using umask
This may not be the best from a security perspective but as you use samba, why not just set it to force the correct user, group and mask setting for that share? My server at home is setup that way and it works just fine. -Drew On 06/21/2011, Todd Cary t...@aristesoftware.com wrote: Grasping a full understanding of setting default Users, Groups and Masks has alluded me over the years, but now I find myself in a situation where manually setting the file/directory attributes is becoming a pain. I understand the fundamentals of the file attributes, though from time to time I have to review the sticky bit; what I do not understand is where/how the attributes are set when a user creates or modifies a file/directory. Here is my situation: My /var/www/html files have been manually set by me to apache/apache 774. This allows my PHP applications to access the files, and I assume this is a good setting. Now, my server is connected via Samba to my desktop. If I create a file, it is todd/todd 744, so Apache cannot access them. If PHP (Apache) creates or modifies a file, it is apache/apache 755, so I cannot access them (Write/Delete). Is there a way to resolve this? When I FTP to a friend's rent-a-server, I can read/write/delete all of the files I have placed there *and* the same for files touched by PHP (Apache). My Linux Admin books as well as my Linux books do not appear to cover this and/or my experience is lacking. Todd -- Ariste Software Petaluma, CA 94952 http://www.aristesoftware.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Sent from my mobile device Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie This started out as a hobby and spun horribly out of control. -Unknown ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] increase harddisk diskspace Failed to suspend LogVol00
Have you also unmounted the filesystem on LogVol00? -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SSD for Centos SWAP /tmp /var/ partition
Hmmm sector still had random data after rm tmpfile and sync; /dev/sda3 on / type ext4 (rw,noatime,nodiratime,discard) Device Model: KINGSTON SS100S216G Serial Number: 16GB40013421 Firmware Version: D100719 Suppose to support TRIM. Just so you know, in Jan '09 there was a thread on the linux raid list where they discussed the TRIM command on SSD's. The gist of the conversation (as I understood it) was that for SATA based SSD's, the results of a raw read afterward were non-deterministic, ie you couldn't be certain what you'd get back. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie This started out as a hobby and spun horribly out of control. -Unknown ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: Why VM?
2. Reduce data center costs by reducing your physical infrastructure and improving your server to admin ratio: Fewer servers and related IT hardware means reduced real estate and reduced power and cooling requirements. Better management tools let you improve your server to admin ratio so personnel requirements are reduced as well. Personally, my experience is that, if anything, running multiple systems on a vm host measurably increases the administrative burden per host. For one thing, you now have multiple instances to update and to keep secure whereas before you had one OS to worry about. If we had tens or hundreds or thousands of servers then yes, I can see the benefits. We, however, do not deal with equipment on that scale. What you have to understand is that administration of a server is more then just managing updates on your OS. Hardware needs regular maintenance just like any system. With virtualization you reduce the hardware maintenance costs, you still have to maintain the OSes as before. 3. Increase availability of hardware and applications for improved business continuity: Securely backup and migrate entire virtual environments with no interruption in service. Eliminate planned downtime and recover immediately from unplanned issues. I suppose that moving VM instances as file systems provides a real value by eliminating the setup and configuration required to get bare metal to flash up in a usable fashion. This is in fact the only area that I see a real advantage to VM over bare metal installs. This was the biggest selling point for us. I can migrate all my VM's off one host while I do maintenance on that host. Also, by backing up the VM's at the host level (includes the VM config as well as the disk images) I can restore my entire system onto our backup gear at our DR site and be up in the matter of hours as opposed to days. 4. Gain operational flexibility: Respond to market changes with dynamic resource management, faster server provisioning and improved desktop and application deployment. I have no idea how deploying VMs to a company's desktop workstations could possibly benefit the firm., VMware does more then just virtualise servers. When they mean desktop deployment they are refering to Virtual Desktop Infrastructure (VDI). Instead of having 30 PC's spread over the office, you run 30 VM's representing those desktops and use Thin Clients to access the desktops. Using a technology called linked clones you can reduce the maintenance of those 30 PC's down to just a few master images. 5. Improve desktop manageability and security: Deploy, manage and monitor secure desktop environments that users can access locally or remotely, with or without a network connection, on almost any standard desktop, laptop or tablet PC. Again, how is this accomplished and what are the advantages over a single OS install? None of the above claims have anything to do with VM per se as far as I can see. This is part of VDI. By having VDI in the rack, you can deploy virtual desktops to users whether they are in the office or on the road. I've seen demo's of the software and while it's outside my firm's budget, it's definitely interesting technology. In our organization, we had around dozen servers with about 120 PC's. During our systems refresh last year, we had concerns about our organizations ability to withstand a failure of certain key servers, our remote access and accounting servers being among them. By virtualizing eight of the physical servers (the others are geographically dispersed so not candidates for virtualization) down to a single two node cluster w/ SAN, we were able to refresh our systems for less cost then buying individual servers, and we ended up with a system that could withstand the failure of a server without major downtime. And because our backups moved from guest level to host level, we now have the ability to restore key machines to a backup site in minutes as opposed to hours. The other major benefit we realized going virtual was the ability to test stuff out ahead of time before sending it to production. Prior to this we kept older servers around as testbed machines for evaluating new software. Testing software on older machines really isn't the best way to test a system's ability to perform in production and there was no way I could justify buying a brand new server just to test some new software that may or may not have value. In our virtual environment I can fire of a VM spec'd the way it'd be in production and test it that way. If it's a dead end a simple delete of the VM and it's gone. If it has value, we can migrate the VM into production. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Initial 6.0 trees in QA
Where can I get these ISO's I have a couple of Dell R710's with Broadcom 10Gb nic's, a R610 and and a ESX4.1 environment that I can QA on. I don't believe you can. My understanding is that CentOS' QA builds are internal to the team and those aren't released to the general public. The only reason we know about them is because of changes made by TPTB to improve transparency openness into the state of the build process, the hope being that by feeding the community information as needed, they can avoid the recent flame-wars. -- Drew This started out as a hobby and spun horribly out of control. -Unknown ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] [Thread Cop] [was: Re: OT: wifi, phone, power in India and Malaysia]
Who pissed in your cornflakes this morning John? :-) Yeah the CentOS mailing list is for CentOS matters but nowhere in the list rules have I seen one that says we can't post off topic questions. Asking if the power in another country is compatible with yours (or a friend's) laptop is off-topic but still within the bounds of an acceptable tech question for a *technical* mailing list. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie This started out as a hobby and spun horribly out of control. -Unknown ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SSD for Centos SWAP /tmp /var/ partition
A SSD drive can be a SATA drive. SATA is the connection/protocol between the drive and the computer. Not quite. SATA is a type of drive, same as IDE / ATA, SCSI, SATA :) I disagree. :) IDE/ATA, SATA, SAS, SCSI are all just interfaces. The underlying media, whether spinning rust or MLC/SLC NAND Flash is the drive. So SSD's can be SATA, SAS, built into custom PCIe cards (OCZ Revo Drive's the ilk) or even ATA (never seen one). Regardless it's still an SSD drive. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie This started out as a hobby and spun horribly out of control. -Unknown ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: RHEL 6.1 is out
If you deferred releasing a 6.0 and instead immediately started working on 6.1, how much additional time would that add to getting 6.1 out? I'm not so much asking for an actual estimate, as I am whether it would be easier just to go directly to 6.1 if it fixes any issues that make building the release easier. An .1 release is basically a .0 release + patches so I don't see any real difference. The hard part is reverse engineering the .0 release build environment and the .1 follows pretty quick from there. Occasionally a .x release breaks the environment and you get situations like 5.6 was. Just my $0.02 form trolling the lists the last few years. :-) -- Drew Waiting patiently for 6.x so he can try out KVM stuff without having to do a from scratch reinstall. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS-virt] KVM vs ESXi
Morning Everyone, I'm busy doing a rebuild of my home server and am tossing between VMware and KVM for this build. I already have experience with ESX, we use it at work, but I'm debating trying out KVM for a while. The server itself is a budget build using a Supermicro X8SAX board w/ i7-950 12GB RAM, LSI 3081 SAS RAID (1068e based), rolled into a NorcoTek 16 Bay SAS case. Not fancy but also decent enough for home use. I don't expect high performance out of this unit so unless the gear is hopelessly outclassed, I'm not in a position to entertain upgrading. Right now forking over $1000-$1500 on a $2000 system for a pair of higher end LSI/3ware/Acreca controller just isn't in the budget. ;-) My question to everyone are these: -How well does KVM support Windows Guests? I'm already running a Server 2008r2 and WHS 2011 (based on 08r2) machines at home which I want to consolidate into this box. -Does KVM have a concept of virtual switches and and are they tied to physical NICs? ESXi allows me to create a vSwitch that isn't tied to a physical NIC so I can create a DMZ that exists solely within the host system. I'd like to replicate that if possible. I know these are probably questions that I could answer on my own by RTFM but I have already, and never really got the answers I needed. Pretty much every how-to assumed I'd be doing basic stuff and not dabbling with advanced stuff. I also know that what's written doesn't always match what's in the field and you folks are the field. And with CentOS 6 just around the corner (no flame wars please, my nomex pants are at the cleaners :-P ) I'm wanting to know if it's worth holding off another month or so on finalizing my build. Thanks, -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
[CentOS] KVM vs ESXi
Morning Everyone, I'm busy doing a rebuild of my home server and am tossing between VMware and KVM for this build. I already have experience with ESX, we use it at work, but I'm debating trying out KVM for a while. The server itself is a budget build using a Supermicro X8SAX board w/ i7-950 12GB RAM, LSI 3081 SAS RAID (1068e based), rolled into a NorcoTek 16 Bay SAS case. Not fancy but also decent enough for home use. I don't expect high performance out of this unit so unless the gear is hopelessly outclassed, I'm not in a position to entertain upgrading. Right now forking over $1000-$1500 on a $2000 system for a pair of higher end LSI/3ware/Acreca controller just isn't in the budget. ;-) My question to everyone are these: -How well does KVM support Windows Guests? I'm already running a Server 2008r2 and WHS 2011 (based on 08r2) machines at home which I want to consolidate into this box. -Does KVM have a concept of virtual switches and and are they tied to physical NICs? ESXi allows me to create a vSwitch that isn't tied to a physical NIC so I can create a DMZ that exists solely within the host system. I'd like to replicate that if possible. I know these are probably questions that I could answer on my own by RTFM but I have already, and never really got the answers I needed. Pretty much every how-to assumed I'd be doing basic stuff and not dabbling with advanced stuff. I also know that what's written doesn't always match what's in the field and you folks are the field. And with CentOS 6 just around the corner (no flame wars please, my nomex pants are at the cleaners :-P ) I'm wanting to know if it's worth holding off another month or so on finalizing my build. Thanks, -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Problem Making Tarballs
I have a CentOS virtual private server from 1and1.com This may be a non-issue but have you tried compiling stuff before on this machine? Most of the VPS system's I've seen in operation have stripped out the build tools for performance security reasons. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie This started out as a hobby and spun horribly out of control. -Unknown ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] A question about memory ballooning
The balloon driver allows guests to express to the hypervisor how much memory they require. The balloon driver allows the host to efficiently allocate memory to the guest and allow free memory to be allocated to other guests and processes. Guests using the balloon driver can mark sections of the guest's RAM as not in use (balloon inflation). The hypervisor can free the memory and use the memory for other host processes or other guests on that host. When the guest requires the freed memory again, the hypervisor can reallocate RAM to the guest (balloon deflation). I don't see in this doc any reference to balloon driver is to give the host system a way of recovering memory from the guest when the demands on the host's physical memory exceed the amount available That paragraph doesn't really make a ton of sense to me. The way I understood balloon drivers is that the control over their inflation and deflation is done by the host and not by the guest. The host forces the balloon to inflate when it (the host) is under memory pressure and deflates when the pressure eases. Example, take a host with 12GB of RAM and 4 Guest VM's each with 4GB RAM allocated. When two of those guests are turned on, the host is only using 8GB of RAM for the guests so there's no memory pressure and the balloon drivers in each guest remain deflated. Now bring those extra two guests online and our memory pressure on the host is up to 16GB, a 4GB shortfall. Now I would expect to see the balloon drivers in each guest inflate to recover that 4GB shortfall. RedHat's statement above implies that the guests control how and when that balloon inflates which seems to contradict what I understood. -- Drew ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] RHEL 6.1 beta
Original Message Subject: Re: [CentOS] RHEL 6.1 beta From: Steve Clark scl...@netwolves.commailto:scl...@netwolves.com To: CentOS mailing list centos@centos.orgmailto:centos@centos.org Date: Tuesday, May 03, 2011 10:40:51 AM On 05/02/2011 10:47 AM, Les Mikesell wrote: On 5/2/2011 8:57 AM, Steve Clark wrote: On 05/02/2011 09:38 AM, Lamar Owen wrote: On Monday, May 02, 2011 06:48:37 AM Christopher Chan wrote: biosdevname for nics...bye bye eth0! Not by default, and according to the release notes only for certain Dell servers ATM. But, yes, a different way of looking at NICs is coming down the pipe. It's about time. EGADS Why? After working with FreeBSD for ten years it so nice not to have to worry is this rl0, vr0, em0, fxp0, bge0, ed0, etc in networking scripts. Why would you want to go back to that? The numbers chosen in the eth? scheme are more or less randomized even on identical hardware, so it is pretty much impossible to prepare a disk to ship to a remote site and have it come up working unattended or clone disk images for a large rollout. If this gives predictable names in bios-detection order it will be very useful. Remote-site support is expensive and typically not great at the quirks of Linux distributions that you need to know to do IP assignments. In my experience with Linux over the last 3 years using Centos and RH I have never seen the ethn device numbering change, and it always corresponds to the hardware vendor marking on the units we use. I'm doing platform validation on a SuperMicro X9SCL and on everything except for RHEL 6 the NIC I am connected to is seen as eth0, on RHEL only it is seen as eth1. These kinds of wacky inconsistencies drive people crazy =) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos as Gateway ? (Router/transparent proxy)
Correct. The easy solution is to ban bittorrent and other P2P services. not as easy as it sounds. those services are remarkably agile at dodging firewall rules At home it's a bit easier. You can do stuff at the firewall but any parent should have their kid's computer's root password so they can get on whenever they need to. And last I checked there weren't any laws that prohibited parents from conducting random unannounced inspections of the kid(s) machines. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos as Gateway ? (Router/transparent proxy)
3. Irrespective of cost, sometimes heavy downloading can eat into a connection's bandwidth and kill the connection for everyone else. In fact, upgrading to a flat rate plan encourages this kind of behaviour more. If the ISP offer's flat rate or capped flat rate services and can't handle the load, that's their problem, not ours. It just means they didn't do their infrastructure capacity planning properly. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie This started out as a hobby and spun horribly out of control. -Unknown ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Installing/configuring a second HD
My old server was Centos 4.8 and it is on a HD that is NOT connected. The new Centos 5.5 is the active HD. Everything appears to be working, so my intent is to jumper the old HD as a slave, wipe it clean and have it as a backup drive. Since my Linux skills are minimum, I thought it best to heck with the experts to find the best (safest) way to accomplish my goal. It should be okay to do as you describe. If the disk is LVM based, see my comments below. If it's not LVM based, the worst that could happen is the system will see the partitions and try to mount them under /mnt or some such. There's no worry that the system will mount the old partitions over top your existing ones. A quick fdisk to remove any old partitions, create new, and your off and running. I assume that the old drive will auto-mount, however I am not sure if it will be identified as a separate due to the Volume system (I am not near my server at the moment and I cannot remember the exact name that is used for the HD configuration). I would notwant to format the drive and find out everything was formatted. If the Volume system you refer to is LVM, then you shouldn't have any issues with the drive auto-mounting. Been a while since I did this but I believe you have to tell LVM about the volume group on that drive before the logical volumes can be mounted. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie This started out as a hobby and spun horribly out of control. -Unknown ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] A question about memory ballooning
And the opposite question, can memory balloon be deallocated?? And is it possible to do this automatically or is an error to do this?? I think your understanding of ballooning may be backwards. The purpose of the balloon driver is to give the host system a way of recovering memory from the guest when the demands on the host's physical memory exceed the amount available. The balloon inflates within the guests forcing them to swap or take other memory management measures. When the pressure on the host eases the balloon deflates automatically. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] is the list dead?
Is the list dead, or just quiet all of the sudden? I'm going to assume people have stopped whining now that their beloved 5.6 is out. :-) -- Drew This started out as a hobby and spun horribly out of control. -Unknown ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared
Hi, Just an update to the list. This issue is still present, I even tried it on a different Intel socket 1155 motherboard (DH61WW) which is about as plain vanilla as it gets. It must be something to do with the onboard video and PCI Express. Has anyone been able to get around this? -Drew -Original Message- From: Kenni Lund [mailto:ke...@kelu.dk] Sent: Thursday, January 20, 2011 6:46 AM To: CentOS mailing list Cc: Drew Weaver Subject: Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared 2011/1/18 Drew Weaver drew.wea...@thenap.com: Because the installer doesn't have drivers for the onboard and all of our installs are PXE and in general it removes a lot of confusion by just disabling the onboard NIC and having one single NIC for everything. Drew, out of curiosity (I have a similar motherboard in backorder), does the latest CentOS kernel have drivers for the onboard NIC after the installation? If not, I'll probably cancel my order and try a Gigabyte board insteadthanks in advance! Best regards Kenni ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] [OT] ups advice
- Stick to APC Five years ago I would have said that. Having worked with Liebert's GXT2 GXT3units now for the last few years, I'm not so sure I'd want to go back to APC. For us the biggest bonus of Liebert was we got true online (double conversion) UPS kit at the same price point as APC's Line Interactive Smart UPS family. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 40TB File System Recommendations
Where can I get an enterprise-class 2TB drive for $100? Commodity SATA isn't enterprise-class. SAS is; FC is, SCSI is. A 500GB FC drive with EMC firmware new is going to set you back ten times that, at least. What's youre data worth indeed, putting it on commodity disk :-) I can get Seagate's Constellation ES series SATA drives in 1TB for $125. 2TB will run me around $225. They're not something I'd run my database off, I have 15k SAS drives for that, but for large amounts of storage on the cheap like our backup system, it's just fine. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How can a company help, officially?
sadly, gmail/googlemail is very hostile to proper quoting practices. it hides quoted text, while leaving the whole previous message appended, without any form of quoting. The only workable way around this is to use a imap/pop client like Thunderbird with it, which then disables a lot of the web functionality of gmail... Just poking my head up here but how is GMail hostile? It's defaults aren't exactly friendly to lists like CentOS but I'm busy writing this in Gmail, it's not top posted, quoted correctly, doesn't break threading, is addressed to you and the list, and is plain text AFAIK. All I've done is applied the list's etiquette rules and am careful not to break them. So what are an extra mouse click or two here and there? -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] PCI-X/PCIe RAID controller.
cheap scsi raid? good luck. maybe something on ebay, but then its Caveat Emptor, and likely the raid batteries will be dead or dying. What speed is your scsi backplane? you can't get Ultra/320 speeds across older backplanes that were designed for U80 or U160 speeds. in fact, I've had a few backplanes that were supposed to be U320 but only worked reliably at U160 speeds, would get SCSI protocol errors when pushed under high IO loads at U320. 64bit 33Mhz PCI will sustain about 200MB/sec, which is about all you can get out of a single channel of U160 or slower SCSI anyways. In that case there's no real point upgrading. :-) The drives are U160's. I was just hoping a slightly newer card might be available that'd give me a speed boost for cheap. :-) -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] PCI-X/PCIe RAID controller.
The key is the backplane, not the drives. You should be able to get u320 speeds if you have enough u160 drives. Does five drives count? I was just hoping a slightly newer card might be available that'd give me a speed boost for cheap. :-) Again, like John posted, it depends on whether your backplane(s) can feed the u320 card and whether its bus can take the bandwidth. AFAIK, the back plane is rated at U320 speeds. The unit is a Supermicro CSE-M35S (SCA) which is listed as a U320 rated unit. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] PCI-X/PCIe RAID controller.
I guess that depends on whether they can flood an u320 bus. If they are 10k/15k rpm drives, I'd think so... 10k rpm drives. I can also get my hands on some retired IBM U320's if I want to pull them from our shop's boneyard. No experience with that particular unit but Supermicro has a good name. That would leave whether your mainboard's bus/slot can handle u320 speeds or not if you do get a u320 card. The X8SAX board I'm upgrading to uses a PCIe to PCI-X bridge chip to handle the two PCI-X slots. Based on my read of the manual, the x4 link used on the PCIe side of the bridge is sufficient to drive a pair of PCI-X 133 slots at full capacity. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] PCI-X/PCIe RAID controller.
Afternoon, I've got an old Dell PERC 4DC (PCI 64bit/33MHz) sitting in my home rig and with a new board on the way that has PCI-X (133) and PCIe (x4) slots, I was wondering what people would recommend for a cheap hardware parallel SCSI RAID controller (no fake raid please) that is relatively cheap but faster then the old PERC? I'm looking for something cheap that'll do RAID-10 but bonus points if it does RAID-5/6. :-) -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Can anyone suggest a SCSI 3 card in either PCI-X or PCI-E x 4 for a Dell Poweredge 2900?
On Thu, Apr 7, 2011 at 12:27 PM, Michel van Deventer mic...@van.deventer.cx wrote: On Thu, 2011-04-07 at 12:17 -0700, John R Pierce wrote: snip raid controllers are problematic for tape devices. many don't support plain passthrough SCSI Well, I did use one of these controllers for a tape drive actually :) So have I. It worked for years. Doesn't mean it's a good idea tho. A 29320 (PCIe) or 39320 (PCI-X 133) can be had for under $150. At that price it's worth investing the little bit extra, especially if you're pushing the kinds of backup sets an LTO3 drive seems to indicate. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] VMware vSphere Hypervisor (free ESXi) and mdraid
Can I combine VMWare ESXi (free version) virtualization and CentOS mdraid level 1? Any pointers how to do it? I never used VMWare before. Not if you want to run ESXi on bare metal; ESXi is an OS in it's own right. VMware Player/Server/Workstation OTOH will run on top of mdadm as it needs a host OS and doesn't care what it is given as a block device. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
Any experience with the free VMware vSphere Hypervisor?. (It was formerly known as VMware ESXi Single Server or free ESXi.) http://www.vmware.com/products/vsphere-hypervisor/overview.html I would need a tutorial about that... For example, does that run without a host OS? Can it be managed only via Win clients? Issues with CentOS 4/5 guests (all my systems are currently CentOS 4/5). vSphere ESX(i) is good product. It runs on bare metal so there is no OS underneath it. ESX has a linux based environment that sort of runs at the hypervisor level that people use for basic admin but VMware is trying to phase that out as most everything you can do with ESX's console can be done through ESXi's API's and the remote CLI. Only downside to the free version is certain API's are unavailable and if you need those features you may have to go to a paid version. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] My new server
And I see I have to put in a PCI-E NIC, not a common-or-garden PCI. Why can't they leave things as they are ... Because a PCIe x1 slot smokes your run of the mill PCI slot any day? -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Add repo for xfig package
You don't have your base CentOS repository configured. What have you done to /etc/yum.repos.d/CentOS-Base.repo, or have you been doing something strange to /etc/yum.conf? And what is this Rocks-5.4 repository? Rocks 5.4 is a recompile of CentOS 5 oriented towards compute clusters. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] The delays on CentOS 5.6 are causing EPEL incompatibilities
Did we read the same page? When you buy Novell (SUSE) support for RedHat EL, you will still run your original RedHat EL installation but then update packages rebuilt by Novell. Technically that's the same like adding the CentOS repo config to your RedHat installation and then install all updates from CentOS instead of RedHat. What a mess, why would anyone in the world want this? And then pay $ for the mess... Most likely because of relative cost and/or perceived value of SLES vs RHEL? Novell is essentially offering to help you while you switch existing kit over to SLES. If you're already paying for a RHEL subscription, Novell's offer may have a lower cost or offer better value then RHEL -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Race condition with mdadm at boot
I assume the long power-on pause is due to the BIOS silently checking RAM, with the side effect of giving the disks ample time to spin up. Most likely. I have an old Supermicro board (Dual Athlon MP) that's being retired from frontline service and it has a long delay from when you power it up to when it shows the POST screen. Swapping the 4GB of ECC RAM for a single non-ECC stick greatly speeds that process up so I assume there's some sort of tests it runs that can take a while. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5.5 does not recognise SAS drives with LSI 1068E Controller
Based on that info I assume the board having a 8x SAS Ports via LSI 1068E Controller. We received the server with 3 drives + 1 spare as hw RAID-5 preinstalled. During bootup I see that the drives are initialised and everything seems ok. The issue I am facing is that when trying to install CentOS no hard drives are recognised. One other thing to check, which is rare but I've seen before with your symptoms, is a controller that's not listed in the driver's PCI ID list. The chip onboard is a 1068e but if Supermicro used a nonstandard PCI ID, the driver wouldn't recognize it. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS and Marvell SAS/SATA drivers
I blame Adaptec for the dominance of IDE. Seriously. If Adaptec A) hadn't had the lionshare of the SCSI mindset in the PC business back in the 90s, and B) hadn't made so much overpriced buggy crap, we'd all be using SCSI today. Yes and No. I remember playing with it back in the 90's and what drove me away from SCSI was the complexity of the standard. Yes Adaptec made it harder then it had to be but IDE, for all it's failings, was easier to use. You jumper'd one disk as master and one as slave and it pretty much just worked. SCSI on the other hand, at least in DOS/Win3/Win95/98, was a complex process involving TSR's and fiddling with jumpers on the disks HBA. I remember my father spent six hours trying to get a simple SCSI scanner to work. By the time RedHat 6 came out, when I made my first real foray into Linux, SCSI support was a lot better. I also took the time to sit down with a sysadmin I knew and download his knowledge about SCSI which he'd learned over the decades. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: Ecommerce hosting
Would appreciate some suggestions for ecommerce hosting. Depends on what you want. I use beanstream for the bit of stuff that I do. I think he meant web hosting for running an ecommerce oriented website. :-) +1 for BeanStream in any event. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server Specs..
Recently a discussion around server specifications were floated with mention of routines to stress the configurations. Do these stress suites exist for server testing? http://www.stresslinux.org/ IMHO, contains one of the best collection of linux based stress testing verification tools on a convenient CD. I use it to pound on off-lease servers before we accept them from our Vendor. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Strange Kernel for Centos 5.5
RHEL and CentOS have much, much tighter basic privilege handling. The complexity of the NTFS ACL structure, for example, is so frequently mishandled that it's often ignored and simply dealt with as Administrator. The result is privilege escalation chaos. And how is the user-group-world permissions system any better? I work daily with both *nix NTFS ACL's and given the choice I prefer NTFS' for the finer grained control. You want to create a folder in which user A B have access to but nobody else? In *nix you create a group that both those users belong to and set the folder to use that group's permissions. In NTFS you set the ACL's so those two users have (almost) full access to the folder. Simple enough. Now say you need to create another folder which only users B C have access to? In *nix you create another group, one that B C belong to, and assign that group permissions to that folder. NTFS? Set the ACL's so that only B C have access. Now let's say we want User A to have read only access to that second folder? They're not the owner, and don't belong to the group, so world permissions are your only choice. What if this folder is a confidential folder containing files the CEO VP should be able to alter but the Admin Assistant needs to be able to pick files from? You really don't want a lowly peon down in shipping seeing the confidential memo now do you? In NTFS you just add user A to the folder with read only permissions. Now expand this out to hundreds of folders and watch the *nix groups multiply like rabbits. Admittedly a few areas of NTFS ACL's cause some confusion, inheritance and precedence rules among them, but if you take the time to read how they work and play with it before putting it into production it's actually quite easy to work with. RTFM? :-) -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ipsec with ipv4 and ipv6 not working
I have posted to the ipsec-devel list and haven't gotten any responses. Also I have spent 2 days googling with no results about the above setup. Is it even possible to tunnel ipv4 packet thru an ipv6 ipsec tunnel? AFAIK, No. IPv4 IPv6 are different protocols so if you want to move IPv6 traffic over a IPv4 IPSEC tunnel you need to encapsulate the IPv6 payload within IPv4 packets. The reverse is also true of IPv4 over IPv6. This is why tunnel brokers like Freenet6 Teredo exist, you can't push IPv6 traffic out across an IPv4 only network without tunneling. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] glibc++6.2?
http://www.catb.org/~esr/faqs/smart-questions.html -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] glibc++6.2?
http://www.catb.org/~esr/faqs/smart-questions.html -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to relocate $HOME directory
By the way, I'd suggest not using the name /export. It gets used in too many places to mean specific things and it could get confusing some time later. Pick some other name. My personal preference is to use a subdirectory under /srv, say /srv/nfs/home. Keeps it out of the rest of the tree and pretty obvious what the files are for. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared
Btw, this is the complete error. Jan 16 07:03:23 server kernel: irq 177: nobody cared (try booting with the irqpoll option) Jan 16 07:03:23 server kernel: [c044d886] __report_bad_irq+0x2b/0x69 Jan 16 07:03:23 server kernel: [c044da73] note_interrupt+0x1af/0x1e8 Jan 16 07:03:23 server kernel: [c044d081] handle_IRQ_event+0x45/0x8c Jan 16 07:03:23 server kernel: [c044d163] __do_IRQ+0x9b/0xd6 Jan 16 07:03:23 server kernel: [c044d0c8] __do_IRQ+0x0/0xd6 Jan 16 07:03:23 server kernel: [c040749e] do_IRQ+0x99/0xc3 Jan 16 07:03:23 server kernel: [c0405946] common_interrupt+0x1a/0x20 Jan 16 07:03:23 server kernel: [c05302c0] acpi_processor_idle_simple+0x0/0x254 Jan 16 07:03:23 server kernel: [c052fc0b] acpi_safe_halt+0x14/0x20 Jan 16 07:03:23 server kernel: [c0530367] acpi_processor_idle_simple+0xa7/0x254 Jan 16 07:03:23 server kernel: [c053007b] acpi_processor_get_power_info+0x464/0x510 Jan 16 07:03:23 server kernel: [c0403ca8] cpu_idle+0x9f/0xb9 Jan 16 07:03:23 server kernel: === Jan 16 07:03:23 server kernel: handlers: Jan 16 07:03:23 server kernel: [c058afd1] (usb_hcd_irq+0x0/0x50) Jan 16 07:03:23 server kernel: [f8964b7f] (e1000_intr+0x0/0x10b [e1000]) Jan 16 07:03:23 server kernel: Disabling IRQ #177 In case again anyone is interested. I just tried updating the bios, if it freezes again I will boot with acpi=off and then retest. acpi=off in the kernel options has allowed the machine to run for over 12 hours without crashing, we'll see what happens. doesn't seem like a hardware problem. thanks, -Drew ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared
Jan 16 07:03:23 server kernel: irq 177: nobody cared (try booting with the irqpoll option) Jan 16 07:03:23 server kernel: [c044d886] __report_bad_irq+0x2b/0x69 Jan 16 07:03:23 server kernel: [c044da73] note_interrupt+0x1af/0x1e8 Jan 16 07:03:23 server kernel: [c044d081] handle_IRQ_event+0x45/0x8c Jan 16 07:03:23 server kernel: [c044d163] __do_IRQ+0x9b/0xd6 Jan 16 07:03:23 server kernel: [c044d0c8] __do_IRQ+0x0/0xd6 Jan 16 07:03:23 server kernel: [c040749e] do_IRQ+0x99/0xc3 Jan 16 07:03:23 server kernel: [c0405946] common_interrupt+0x1a/0x20 Jan 16 07:03:23 server kernel: [c05302c0] acpi_processor_idle_simple+0x0/0x254 Jan 16 07:03:23 server kernel: [c052fc0b] acpi_safe_halt+0x14/0x20 Jan 16 07:03:23 server kernel: [c0530367] acpi_processor_idle_simple+0xa7/0x254 Jan 16 07:03:23 server kernel: [c053007b] acpi_processor_get_power_info+0x464/0x510 Jan 16 07:03:23 server kernel: [c0403ca8] cpu_idle+0x9f/0xb9 Jan 16 07:03:23 server kernel: === Jan 16 07:03:23 server kernel: handlers: Jan 16 07:03:23 server kernel: [c058afd1] (usb_hcd_irq+0x0/0x50) Jan 16 07:03:23 server kernel: [f8964b7f] (e1000_intr+0x0/0x10b [e1000]) Jan 16 07:03:23 server kernel: Disabling IRQ #177 == I spoke too soon, the problem wasn't fixed but I found the cause of the issue. The above error occurs when you unplug the video cable from the onboard video. As our machines are mainly headless terminals, this will not do at all. I am going to retest with RHEL 6. thanks, -Drew ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared
Jan 16 07:03:23 server kernel: irq 177: nobody cared (try booting with the irqpoll option) I spoke too soon, the problem wasn't fixed but I found the cause of the issue. The above error occurs when you unplug the video cable from the onboard video. As our machines are mainly headless terminals, this will not do at all. Does the BIOS allow you to disable the video hardware completely? Does that enable your kernel to boot? If not, grab the kernel source and build a kernel without console support (which is what I had to do for our headless embedded systems) sshd is the only way to talk to my target machines. The kernel boots fine, and everything works ok until you unplug the monitor from the DVI port on the motherboard. When you unplug the monitor, that IRQ/ACPI message is displayed, and it screws up the USB and the e1000 card in the system. These machines aren't always headless, sometimes we need to plug monitors into them. thanks, -Drew ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared
On Wednesday, January 19, 2011 12:35:18 pm Drew Weaver wrote: The kernel boots fine, and everything works ok until you unplug the monitor from the DVI port on the motherboard. When you unplug the monitor, that IRQ/ACPI message is displayed, and it screws up the USB and the e1000 card in the system. These machines aren't always headless, sometimes we need to plug monitors into them. Can you disable the video card's use of an IRQ? I've seen that before, where the video card had an IRQ whether the driver needed it or not. If you use a DVI to VGA/analog adapter and unplug an analog monitor, does it still happen? = It doesn't look like there is an option to assign an IRQ to this card or not. If I use a DVI-VGA adapter and leave the adapter connected but unplug the vga cord from the adapter it still freaks out. It looks like Intel is trying to be handy and detect the state of the video port, but it's really freaking annoying it turns out =) Just FYI, I tried this on RHEL 6 and Debian 5 as well, and it does the exact same thing. Motherboard doesn't support Linux so I am guessing Intel has no interest in fixing this problem, but just a cautionary tale to everyone =) -Drew ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared
Hello, We have built a couple of CentOS 5.5 systems on the Intel DH67BL (Sandy Bridge) motherboard and overall they work pretty well. I'm having one problem which keeps cropping up and that is an error message that says: IRQ 177 nobody cared (try booting with the irqpoll option) report bad irq, references CPU idle then it references usb_hcd_irq and e1000_intr then it disables the add-on PCI E1000 card and disconnects itself from the network. I'm assuming what is happening here is the USB controller and the add-on E1000 controller we put in are having an old school IRQ conflict, the question is why and how can I avoid it? I have tried disabling all of the extra stuff in the BIOS that I could, and this still happens fairly frequently. Any advice would be great. thanks, -Drew ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared
Ah, it is a PCI card and there is only one PCI slot.. -Drew -Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Giles Coochey Sent: Tuesday, January 18, 2011 9:24 AM To: centos@centos.org Subject: Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared On 18/01/2011 15:22, Drew Weaver wrote: Hello, We have built a couple of CentOS 5.5 systems on the Intel DH67BL (Sandy Bridge) motherboard and overall they work pretty well. I'm having one problem which keeps cropping up and that is an error message that says: IRQ 177 nobody cared (try booting with the irqpoll option) report bad irq, references CPU idle then it references usb_hcd_irq and e1000_intr then it disables the add-on PCI E1000 card and disconnects itself from the network. I'm assuming what is happening here is the USB controller and the add-on E1000 controller we put in are having an old school IRQ conflict, the question is why and how can I avoid it? I have tried disabling all of the extra stuff in the BIOS that I could, and this still happens fairly frequently. Any advice would be great. Have you tried putting one of the cards in a different slot? -- Best Regards, Giles Coochey NetSecSpec Ltd NL T-Systems Mobile: +31 681 265 086 NL Mobile: +31 626 508 131 Email/MSN/Live Messenger: gi...@coochey.net Skype: gilescoochey ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared
Why don't you use the mother board incorporated NIC? it does have one right? --- Because the installer doesn't have drivers for the onboard and all of our installs are PXE and in general it removes a lot of confusion by just disabling the onboard NIC and having one single NIC for everything. thanks, -Drew From: Drew Weaver drew.wea...@thenap.com To: CentOS mailing list centos@centos.org Sent: Tuesday, 18 January, 2011 2:22:04 PM Subject: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared Hello, We have built a couple of CentOS 5.5 systems on the Intel DH67BL (Sandy Bridge) motherboard and overall they work pretty well. I'm having one problem which keeps cropping up and that is an error message that says: IRQ 177 nobody cared (try booting with the irqpoll option) report bad irq, references CPU idle then it references usb_hcd_irq and e1000_intr then it disables the add-on PCI E1000 card and disconnects itself from the network. I'm assuming what is happening here is the USB controller and the add-on E1000 controller we put in are having an old school IRQ conflict, the question is why and how can I avoid it? I have tried disabling all of the extra stuff in the BIOS that I could, and this still happens fairly frequently. Any advice would be great. thanks, -Drew ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared
Hi, It doesn't appear to, it simply shows a little ASCII diagram of what is set for each slot. thanks, -Drew -Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Giles Coochey Sent: Tuesday, January 18, 2011 9:39 AM To: centos@centos.org Subject: Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared On 18/01/2011 15:34, Drew Weaver wrote: Ah, it is a PCI card and there is only one PCI slot.. -Drew -Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Giles Coochey Sent: Tuesday, January 18, 2011 9:24 AM To: centos@centos.org Subject: Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared On 18/01/2011 15:22, Drew Weaver wrote: Hello, We have built a couple of CentOS 5.5 systems on the Intel DH67BL (Sandy Bridge) motherboard and overall they work pretty well. I'm having one problem which keeps cropping up and that is an error message that says: IRQ 177 nobody cared (try booting with the irqpoll option) report bad irq, references CPU idle then it references usb_hcd_irq and e1000_intr then it disables the add-on PCI E1000 card and disconnects itself from the network. I'm assuming what is happening here is the USB controller and the add-on E1000 controller we put in are having an old school IRQ conflict, the question is why and how can I avoid it? I have tried disabling all of the extra stuff in the BIOS that I could, and this still happens fairly frequently. Any advice would be great. Have you tried putting one of the cards in a different slot? Does the BIOS allow you to manually set a IRQ to the PCI line? -- Best Regards, Giles Coochey NetSecSpec Ltd NL T-Systems Mobile: +31 681 265 086 NL Mobile: +31 626 508 131 GIB Mobile: +350 5401 6693 Email/MSN/Live Messenger: gi...@coochey.net Skype: gilescoochey ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared
Hi, There does not appear to be a 'Plug and Play OS' option in the BIOS like on previous Intel motherboards. I have disabled all of the USB ports except for the rear panel ones and so far it has been running for awhile. I will see what happens. thanks, -Drew From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of compdoc Sent: Tuesday, January 18, 2011 10:57 AM To: 'CentOS mailing list' Subject: Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared IRQ 177 nobody cared (try booting with the irqpoll option) report bad irq, references CPU idle I'm assuming what is happening here is the USB controller and the add-on E1000 controller we put in are having an old school IRQ conflict, the question is why and how can I avoid it? IRQ177 means you are using APIC, which gives you over 250 interrupts - far more than there were in the olden days. There should be enough that nothing has to share IRQs. But even before APIC came along, devices had gotten pretty good at sharing IRQs. As someone suggested, disable the Plug and Play option in the bios. Try a different brand of Ethernet card? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared
Issue still persists, anyway I thought I'd let you guys know in case someone is thinking about getting one or more of these boards. -Drew From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Drew Weaver Sent: Tuesday, January 18, 2011 11:42 AM To: 'CentOS mailing list' Subject: Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared Hi, There does not appear to be a 'Plug and Play OS' option in the BIOS like on previous Intel motherboards. I have disabled all of the USB ports except for the rear panel ones and so far it has been running for awhile. I will see what happens. thanks, -Drew From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of compdoc Sent: Tuesday, January 18, 2011 10:57 AM To: 'CentOS mailing list' Subject: Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared IRQ 177 nobody cared (try booting with the irqpoll option) report bad irq, references CPU idle I'm assuming what is happening here is the USB controller and the add-on E1000 controller we put in are having an old school IRQ conflict, the question is why and how can I avoid it? IRQ177 means you are using APIC, which gives you over 250 interrupts - far more than there were in the olden days. There should be enough that nothing has to share IRQs. But even before APIC came along, devices had gotten pretty good at sharing IRQs. As someone suggested, disable the Plug and Play option in the bios. Try a different brand of Ethernet card? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared
Btw, this is the complete error. Jan 16 07:03:23 server kernel: irq 177: nobody cared (try booting with the irqpoll option) Jan 16 07:03:23 server kernel: [c044d886] __report_bad_irq+0x2b/0x69 Jan 16 07:03:23 server kernel: [c044da73] note_interrupt+0x1af/0x1e8 Jan 16 07:03:23 server kernel: [c044d081] handle_IRQ_event+0x45/0x8c Jan 16 07:03:23 server kernel: [c044d163] __do_IRQ+0x9b/0xd6 Jan 16 07:03:23 server kernel: [c044d0c8] __do_IRQ+0x0/0xd6 Jan 16 07:03:23 server kernel: [c040749e] do_IRQ+0x99/0xc3 Jan 16 07:03:23 server kernel: [c0405946] common_interrupt+0x1a/0x20 Jan 16 07:03:23 server kernel: [c05302c0] acpi_processor_idle_simple+0x0/0x254 Jan 16 07:03:23 server kernel: [c052fc0b] acpi_safe_halt+0x14/0x20 Jan 16 07:03:23 server kernel: [c0530367] acpi_processor_idle_simple+0xa7/0x254 Jan 16 07:03:23 server kernel: [c053007b] acpi_processor_get_power_info+0x464/0x510 Jan 16 07:03:23 server kernel: [c0403ca8] cpu_idle+0x9f/0xb9 Jan 16 07:03:23 server kernel: === Jan 16 07:03:23 server kernel: handlers: Jan 16 07:03:23 server kernel: [c058afd1] (usb_hcd_irq+0x0/0x50) Jan 16 07:03:23 server kernel: [f8964b7f] (e1000_intr+0x0/0x10b [e1000]) Jan 16 07:03:23 server kernel: Disabling IRQ #177 In case again anyone is interested. I just tried updating the bios, if it freezes again I will boot with acpi=off and then retest. -Drew From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Drew Weaver Sent: Tuesday, January 18, 2011 3:25 PM To: 'CentOS mailing list' Subject: Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared Issue still persists, anyway I thought I'd let you guys know in case someone is thinking about getting one or more of these boards. -Drew From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Drew Weaver Sent: Tuesday, January 18, 2011 11:42 AM To: 'CentOS mailing list' Subject: Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared Hi, There does not appear to be a 'Plug and Play OS' option in the BIOS like on previous Intel motherboards. I have disabled all of the USB ports except for the rear panel ones and so far it has been running for awhile. I will see what happens. thanks, -Drew From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of compdoc Sent: Tuesday, January 18, 2011 10:57 AM To: 'CentOS mailing list' Subject: Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared IRQ 177 nobody cared (try booting with the irqpoll option) report bad irq, references CPU idle I'm assuming what is happening here is the USB controller and the add-on E1000 controller we put in are having an old school IRQ conflict, the question is why and how can I avoid it? IRQ177 means you are using APIC, which gives you over 250 interrupts - far more than there were in the olden days. There should be enough that nothing has to share IRQs. But even before APIC came along, devices had gotten pretty good at sharing IRQs. As someone suggested, disable the Plug and Play option in the bios. Try a different brand of Ethernet card? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared
The keyboard that I use to ctrl-alt-del it is USB, but there was no keyboard connected until after it locked up, so it's a chicken and egg thing. -Drew -Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of m.r...@5-cent.us Sent: Tuesday, January 18, 2011 3:59 PM To: CentOS mailing list Subject: Re: [CentOS] Intel DH67BL + CentOS 5.5 IRQ #177 nobody cared Drew Weaver wrote: Btw, this is the complete error. snip Hmmm... here's a thought: do you have anything plugged into a USB port? If so, try booting with it out; if not, try booting with one in. mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 2 Ethernet cabling question
The colors are directly linked to the pairing. Don't tell the newbies that neutral and ground are the same thing, don't tell the newbies to lick the freezing lamp pole, and don't tell the newbies to get cute with the color coding. Ignoring the standard color code is for emergencies, not for standard wiring. Don't tug on Superman's cape. Don't spit into the wind. Don't pull the mask off the old Lone Ranger, and don't mess around with the color coding of any electrical wiring. And with that I deem this thread finished. :-) -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 2 Ethernet cabling question
The colors do not matter. What matters is the pairs. And every person who comes after you will curse your work because *both* the colors *and* the pairs are part of the 568A/B standard. In my shop if you tried that you'd be very quickly looking for work elsewhere. ;-) -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] appliance to embed Centos
Hi Nataraj, Take a look at the Intel Atom platform. The D510MO D945GCLF2D run beautifully under CentOS and I've used both as firewalls in the past. Another linux based firewall system I use has users reporting the two boards above supporting AV, Content Filtering (proxy), etc on 50Mbps FIOS connections down in the states. If you want multiple onboard nics, the Jetway boards are also supposedly decent. I've never used one but users from the same site have reported sucess with these boards, and the optional 3x1GB nic still fits within the ATX backplate. Only downside to these boards, both Intel Jetway, is they seem to prefer Realtek chipsets onboard. Jetway I understand because of price points. Intel I don't as the Pro/1000 is a rock solid nic. That said, I've never had a problem with flaky drivers or hardware from Realtek. Maybe I'm just lucky. :-) -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
