Re: [CentOS-virt] Xen on CentOS 6.4
What are the advantages / disadvantes of Xen / KVM? Can't say which is better, but KVM works very nicely. I use it to run several Linux and Windows virtual machines that act as servers, but which are not graphic intensive. (just basic desktop use) ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] VM Slowness
Is the one that is slow the one that has 2g resident? 2 Gigs ram? Yes. ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] VM Slowness
I hope this in the right list, but I was wondering if someone could help me with a VM I have that has lately started having problems. It had been running for years without problems. It's possible an update is causing this, but I can't say. The VM is running CentOS 5.8 and after a time, the machine begins to slow down. Things like pings or running commands lag. If I reboot the VM, it runs normally for at least a few hours, but it eventually slows again. I've tried changing the VM's virtio devices to standard devices like IDE and e1000, but it makes no difference. Currently its running virtio. Top shows that nothing is taking up significant cpu time, but even running top takes several seconds for it to open. The system is slow now, but top shows: top - 21:39:48 up 1 day, 5:27, 1 user, load average: 0.93, 1.37, 1.12 Tasks: 177 total, 1 running, 176 sleeping, 0 stopped, 0 zombie Cpu(s): 0.3%us, 0.3%sy, 0.0%ni, 98.6%id, 0.9%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 2075016k total, 1484624k used, 590392k free,64336k buffers Swap: 4128760k total, 12k used, 4128748k free, 981368k cached PID USER PR NI VIRT RES SHR S %CPU %MEMTIME+ COMMAND 4124 root 20 0 2444 1080 812 R 0.1 0.1 0:00.03 top 1 root 15 0 2176 692 604 S 0.0 0.0 0:02.46 init 2 root RT -5 000 S 0.0 0.0 0:00.39 migration/0 3 root 34 19 000 S 0.0 0.0 0:00.00 ksoftirqd/0 Any ideas what to look for? Any information I can provide? Thanks ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] VM Slowness
-Original Message- From: Robert Dinse [mailto:nan...@eskimo.com] Sent: Sunday, May 19, 2013 10:04 PM To: comp...@hotrodpc.com; Discussion about the virtualization on CentOS Subject: Re: [CentOS-virt] VM Slowness How about a top on the host? Could the virtual machine be getting swapped out on the host? Good question. There is another VM on the host without this issue, but here's top from the host: top - 22:11:52 up 1 day, 6:00, 1 user, load average: 0.67, 0.34, 0.29 Tasks: 175 total, 3 running, 172 sleeping, 0 stopped, 0 zombie Cpu(s): 4.3%us, 0.9%sy, 0.0%ni, 94.5%id, 0.3%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 8001476k total, 7794800k used, 206676k free, 284212k buffers Swap: 10620924k total, 156k used, 10620768k free, 4390824k cached PID USER PR NI VIRT RES SHR S %CPU %MEMTIME+ COMMAND 2983 libvirt- 20 0 4373m 2.0g 7392 R 33 26.1 626:39.45 kvm 3385 libvirt- 20 0 3405m 574m 6868 S 15 7.4 263:01.62 kvm 36 root 25 5 000 S1 0.0 19:24.48 ksmd ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] 4kB sector size HDDs
how do I go about setting up the alignment of the partitions I use? If you use one large partition it's easy: you just create the partition leaving 1 meg of free space before the partition. This causes the partition to start at sector 2048, which is a number that 4096 is divisible by. Newer versions of disk utilities like gparted suggest this for you by placing a 1 in the 'Free Space Preceding' box when you go to create a new partition. If you create multiple partitions, it's a little harder since you have make sure that subsequent partitions start on sectors that can be divided evenly into 4096. I've never done this as I always set up one large partition on my storage arrays, and I use a separate drive for the OS to boot from and another separate drive for my VMs. I do this for performance reasons. All of this is explained more or less if you google. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Still a kvm problem after 5.6 upgrade
I still get the following error when I try to start the VM: redlibvirtError: internal error Process exited while reading console log output: qemu: could not open disk image /dev/had Is the disk image a qcow2 type file? Someone wrote: You should not need to do anything in virsh to dump a file ... there should be an xml file in /etc/libvirt/qemu/ for every VM already. There are 2 xml files if the VM is set to run automatically at boot. Using virsh to dump the file, and the rest of the instructions makes it a cleaner repair. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Can anyone post a working pppd config?
I just need a temporary pppoe server, that only uses PAP ___Can someone post a howto, just in a few lines, what to do?[...] You have posted this at least to three groups (centos, fedora, ubuntu). No-one here should waste time in answering your mail extensive. Maybe he just needs a quick answer. I never knew there were limits to who you can ask or what forums you can visit or the mailing lists you can use. What are you doing reading all those mailing lists, hmm? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 40TB File System Recommendations
The biggest issue isn't the spindown. Google 'WDTLER' and see the other, bigger, issue. In a nutshell, TLER (Time-Limited Error Recovery; see https://secure.wikimedia.org/wikipedia/en/wiki/TLER ) allows the drive to not try to recover soft errors quite as long. The error recovery time can cause the drive to drop out of RAID sets and be marked as faulted. Yes, I'm aware of that and it's the reason I have to replace drives developing reallocated sectors: they get dropped by my 3ware controllers. There's a penalty for using cheap drives, but there's also a benefit from the low heat and power savings. To me, drives and power supplies are a consumable item - something you're going to have to replace from time to time. I'm used to it since I service computers for a living. I've seen enterprise drives fail too, although probably not as often. By the way, I'm seeing too many ppl with failing SSD's to start relying on those yet. I own one so far, but it's not used much. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Monitoring power consumption
I would like to monitor the power consumption of my server. What I am looking for is: How about an external device? I own one of those killawatt devices. You can program in your local power cost, and it displays how much it actually costs to run the server. (along with lots of other info) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dag's RHEL Rebuild Project.
I am sure if you do then you will have a mailing list on which your fanbois can post that they want to give you money. But this list is not for that purpose. Once again an unnecessary personal attack. Nonsense. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 40TB File System Recommendations
The WD RE4-GP is a so-called ''green'' disk that's suitable for RAID arrays. It's marketed and priced as an enterprise drive. I've had good luck with green, 5400 rpm Samsung drives. They don't spin down automatically and work fine in my raid 5 arrays. The cost is about $80 for 2TB drives. I also have a few 5900 rpm Seagate ST32000542AS drives, but not currently in raids. They don't spin down, so I'm sure they would be fine in a raid. None of the drives in the raids have failed, although I've replaced a couple that developed reallocated sectors as reported by smart. Just because they are so tiny on the outside, 2.5 inch drives like the Seagate Constellation and WD Raptors are great. Unfortunately, the don't come any larger than 1TB, so I use them in special situations. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] whats the package that allows copy and paste between windows
What is the package that allows copy and paste between windows? How do you connect to centos? VNC? If you're running vnc4server on the centos box, there's a program you have to leave running named vncconfig that allows clipboard xfer... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] the mighty Karanbir Singh and centos team
BTW, you can actually follow through on that: http://www.yougotbeer.com/ Josh That site only seems to work for people in the US. Be expensive for them to travel here for a sixpack. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] the mighty Karanbir Singh and centos team
You and your crew slowed down the internet last night with all the 5.6 downloads. Congrats! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS 5.6 and KVM failure
After updating to 5.6 on a server this morning, I can no longer boot two virtual machines. One is trixbox which I believe is a 32bit centos based distro, and the other vm is a 64bit Windows 2008 installation. The error I get in the virt-manager console is FATAL: No bootable device. Both VMs are qcow2 format, and I've checked file permissions. I'm going to boot a live cd in the trixbox vm to see if I can access anything on it's qcow2 disk. Any hints appreciated... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5.6 and KVM failure
A similar incident was reported during the QA. Look at the .xml file. If it says type='raw', change it to type='qcow2' and restart libvirtd. Would that fix the problem ? Akemi Thank you. After reading your message, I googled the error and found a webpage that describes a slightly different procedure than yours, but which does the same thing: http://ubuntuforums.org/showthread.php?t=1638708 Everything is working now. :) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos 6 Update?
http://www.collegehumor.com/video/3980096/we-didnt-start-the-flame-war The theme song of flame wars everywhere :) Great song. At least all messages titled Centos 6 Update? Are easy to spot and delete. :) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos 6 Update?
What the hell is so special about CentOS 6? indeed ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] KVM Host Disk Performance
Direct comparisons between the two were difficult to judge, but the general result was that the Host was between 2:1 and 3:1 better than the Guest, which seems to be a rather large performance gap. Latency differences were all over the map, which I find puzzling. The Host is 64-bit and the Guest 32-bit, if that makes any difference. Perhaps caching between Host and Guest accounts for some of the differences. It does sound as if the guests are relying on the host rather than accessing the block device directly. Drives should not use much cpu overhead thanks to DMA and improvements to drivers and hardware. When it's done correctly the host has little work to do. That doesn't sound like what's happening with your setup. Basically, you have to think about the guests as independent systems which are competing for disk access with the other guests, and with the host. If you have just one drive or array that's used by all, that's a large bottleneck. I've been working with VMs for a while now and have tried various ways to set up guests. Block devices can be done with or without LVM, although I've stopped using LVM on my systems these days. For reasons of speed and ease of maintenance and backups, what I've settled on is: a small separate drive for the host to boot from, a small separate drive for the guest OSes (I like using qcow2 on WD Raptors), and then a large array on a raid controller for storage which the guests and host can share access to. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] KVM Host Disk Performance
Just curious, why have you stopped using LVM? Simply for ease of maintenance: some recovery and backup utilities like clonezilla can't work with LVM. And because the same names for volume groups are used for each centos install, so trying to attach a drive or volume to a new system for rescue causes conflicts unless you take steps and use unique names from the start. (Although I hear that newer versions of centos/RH will create unique names for you) As I said, LVM works fine for VMs and can be used slice up a volume for guests to be used as a true block device. By the way, a true block device means a raw partition on the disk is given to the guest to format and use as its own - so no existing file system is present. It's almost like giving a guest its own drive to work from, and should operate at the same native speeds as the host. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Is Centos 5.5 too old fro Google Chrome?
I tried to install Google Chrome and received the dependencies error. Is Centos too old for the new Chrome or is there an older Chrome version that is compatible? Chrome depends on a few newer packages than exist in 5.5. I'm guessing centos 6 will have updated packages which will allow Chrome to install. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] KVM Host Disk Performance
I'm having quite an interesting time getting up to speed with KVM/QEMU and the various ways of creating virtual Guest VMs. But disk I/O performance remains a bit of a question mark for me. I'm looking for suggestions and opinions It's possible to set up guests to use a block device that will get you the same disk I/O as the underlying storage. Is that what you're seeing? What speed does the host see when benchmarking the RAID volumes, and what speeds do the guests see? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ZFS @ centOS
Can so. tell me if fuse-ZFS is more trouble than it's worth? I've tried both fuse-ZFS, and also zfs installed from rpm's on zfsonlinux.org. Both on centos 5.5. fuse-ZFS is more polished, but cut write speeds in half on my raid 5. I ended up going ext4. SME Server is great by the way - been using it for years. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] WD RE4-GP Dropped From Raid
I have a WD RE4-GP which dropped an Adaptec 51645 RAID controller. I ran a smartctl short test on the drive and it failed with a read error. What does smart say about reallocated sectors, pending sector count, drive temperature, etc? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
KVM was a dog in testing under CentOS and RHEL 5.x. The bridged networking has *NO* network configuration tool that understands how to set it up, you have to do it manually, and that's a deficit I've submitted upstream as an RFE. It may work well with CentOS and RHEL 6, i've not had a chance to test it. Back when I was searching for a suitable virtualization platform, I found no difference in performance between Xen and KVM. I liked both, but settled on KVM. ESXi back then was very limited in hardware support, so I never got to play with it much. People seem to like it. And it's true that bridged networking support in centos 5 requires that you set up it manually, but that's what led me to learn ifcfg scripts. It's so simple. ___ 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
Not just Oracle. Novell is actively pursuing Red Hat customers and offering to support their Red Hat installations cheaper than Read Hat does. I know a large international technology company which buys RHEL licenses only for the first year and then switches to Novell for support after that. Does Novell provide their own updates (RHEL rebuilds) or how does this exactly work ? I doubt Novell can redistribute RHEL binaries in this case. RHEL and opensuse are different - defferent kernels, different config files and slightly different locations for some config files. It's not like one is a drop in replacement for the other, so it doesn't make sense to me that a business would buy RHEL support and then switch to opensuse. ___ 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
I guess this is a free service so you can stop paying Red Hat as soon as you plan to migrate to SLES. But they expect you to migrate to SLES in the next three years. So this is not related to OpenSUSE. When I said opensuse, I was referring to suse. Sorry. The problem I have is that RHEL and SLES are different enough that it's no small thing for a business to make the change. I'm guessing RHEL 6 and SUSE 11 are at least equal in quality. (I haven't tried either of them) Cost of subscription for each seems close. So it doesn't make sense that a business would switch - unless maybe the support from Red Hat wasn't great, or if RHEL 6 wasn't great. I do know that centos 5.5 is great, which in my mind, reflects on Red Hat's ability to produce an excellent product. And they certainly provide releases and updates in a timely manner. So Red Hat isn't resting on its laurels. Are there that many Red Hat customers ready to jump ship? Does their support suck? I think both companies should concentrate on providing a good product and decent service, and not waste time on trying to thwart the competition's efforts to provide service to customers. If they all start trying to hinder each other, it seems the beginning of a war. And the only ones to suffer are IT and the communities. (in other words, the innocent) ___ 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
Please, folks -- These are just not CentOS issues -- and the commercial player chess-games and interplay not even vaguely related to the subject matter which started this thread. Please take this elsewhere Sorry, you're right. ___ 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
It'll be either Debian or Ubuntu from now on. Ubuntu makes a great server. But because of recent news I tried opensuse for the first time and I really like it. I understand the need for stability, but for what I do, having the newest (stable) kernel and packages has a greater benefit. Kernel 2.6.37 is in some releases now, and although everyone is crazy about 2.6.38, I'll wait until its released as an official upgrade. And that won't be long - just a few months, likely... ___ 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
to which news are you referring about ubuntu-wise? I meant recent redhat news about the change in how it will deliver code to the community. They mentioned opensuse as being a competitor, I believe. ___ 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
their changes are really aimed at oracle..the rest is smoke and Somehow a story led me to try opensuse. Sorry, don't know which it was that I read. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] Resizing EXT3 partition in guest instance CentOS5
Sorry to bring this up again. Now i am trying the clonezilla method to downsize one of my VM. I have created a smaller storage volume and added to the VM. I boot up wih clonezilla but have issue cloning the drive over. Should I use Disk-Image or Device-Device? To make it smaller, you need to resize your partition(s) first with gparted, and then use device-device if you have both 'drives' mounted. This clones the drive. Use Disk-Image only if you want to store a copy of the drive to local or remote storage. This creates a file backup of the disk. ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] Race condition with mdadm at boot [still mystifying]
On the particular Supermicro motherboard I'm using, there is a very long delay (10 or 15 sec) between power-on and initiation of visible BIOS activity, so all disk drives have ample time to spin up and stabilize. Yeah, I have used Supermicro in the past and they had the same long pause when you turn them on. Good boards, except I had one die recently. I was wondering how many drives total, and how many watts the PSU is? Also, is the controller's firmware up to date? ___ 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
Here are some pics of the RAID configuration: http://www.knuka.org/raid1.jpg http://www.knuka.org/raid2.jpg It does indeed look configured... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server hangs on CentOS 5.5
Your board does not support DDR2. (url for MSI KT3 Ultra) Support 2.5v DDR200/266/333 DDR SDRAM DIMM The OP says this: House-built, Gigabyte MB, AMD Phenom II X6, 6Gb RAM. Somehow, info has gotten crossed... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server hangs on CentOS 5.5
sure, if your time is worthless. you can easily burn a couple hours recapping a motherboard, which typically exceeds the boards worth. Amen. It's not enough to replace the bulging caps - you need to replace all the caps of the same brand as the damaged ones. Otherwise you'll just be doing it again later. And after ordering the exact replacements, and soldering them in, you've been down for days/weeks, and you'll lucky if it hasn't been damaged in other ways from lack of filtered power. Recycle the motherboard (its hazardous waste) and buy a modern one. By the way - don't forget to check the caps inside the PSU. ___ 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
Hmm, I am not sure if I understand you correctly: are you saying that in the firmware configuration there might be an option that makes the disks invisible for the OS? Most controllers have a firmware you can enter at boot with a keystroke. Once in, you create/prepare arrays or single drives, which the OS can then see... ___ 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
Hmm, I am not sure if I understand you correctly: are you saying That in the firmware configuration there might be an option that makes the disks invisible for the OS? No, not as such. You just have to define the arrays: sssign the drives as needed. It's a rare thing that a factory will set up the controller and drives in a way that suits your needs. I think you mentioned that Centos does see the controller, (but listing a different number) and isn't seeing the drives. Which is why myself and others are mentioning configuring the drives within the controller's bios. The number Centos sees might just be the controllers chipset number rather than the controller's part number... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server hangs on CentOS 5.5
During the next server downtime, I'll re-seat RAM If the ram is passing memtest86+, I think reseating only serves to introduce dust and dirt into an area where a tight connection was previously keeping it out. Gently press them down to make sure they're seated, sure. But pulling them out only allows dirt to fall into the cavity, and increases chances of damage from insertion or static electricity, etc. No to mention causing wear on the memory socket itself... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Creating the symbolic links in the /boot and /boot/grub/
How goes the repair? Got it all worked out? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server hangs on CentOS 5.5
I'll re-seat the CPU, heatsink, and fan on the next downtime. Is the CPU overheating? Pointless to reseat the cpu or even remove the heatsink, if not. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server hangs on CentOS 5.5
compdoc wrote: I'll re-seat the CPU, heatsink, and fan on the next downtime. Is the CPU overheating? Pointless to reseat the cpu or even remove the heatsink, if not. No evidence to suggest that it is. As much as I love telling anecdotes, I have none to tell you concerning cpu reseating. I've never seen it fix a problem. Maybe that was something they needed to do back in 1998, but cpu and ram sockets are a reliable technology these days. Removing and then reinserting is likely to do more damage than it will fix. I think you're on the right track - use diagnostic tools and see what you can find. The more poking around you do the better. I do agree about bad caps - even one with a bulging top can cause crashing/rebooting. They need to be checked both on the motherboard and inside the PSU. However, if the motherboard is 2 years old or less, capacitor problems on the motherboard will become less likely the newer it is. They've been making some excellent low cost boards with solid caps for a while. The older boards with that problem are still around but most have died by now. Cheaper PSUs have a cap problem even these days, though. Oh, and both the motherboard and PSU circuit board should be examined for burned components. We have some hellacious lighting strikes here in Denver, and stuff blows up. Hey, I did manage an anecdote after all! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server hangs on CentOS 5.5
According to the man page, it apparently needs a kernel driver named OpenIMPI, which it claims is installed in standard distributions. I don't find it on my system. lm_sensors is another, and I think installs ready to use from the repos. Failing that, you should reboot and look in the motherboard's bios/cmos. It should display all that good stuff: fan speeds, voltage levels, temps. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server hangs on CentOS 5.5
When we removed the heatsinks, the cpus came up with them, even though the socket lever was down in the lock position. I've seen that in HP desktops too - the thermal paste became a hardened glue and the cpu gets pulled right out . Another reason to leave the heat sink on. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server hangs on CentOS 5.5
+36C and +39C are likely your cpu and motherboard temps. You have to look at the temps in the cmos and match them. The +87C is likely just a miss-reading by lm_sensors. Anything running that hot won't be stable. I use AMD as well, and lm_sensors tells me something is 128°C. heh ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server hangs on CentOS 5.5
Err, that should read 128C -Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of compdoc Sent: Wednesday, March 09, 2011 4:50 PM To: 'CentOS mailing list' Subject: Re: [CentOS] Server hangs on CentOS 5.5 +36C and +39C are likely your cpu and motherboard temps. You have to look at the temps in the cmos and match them. The +87C is likely just a miss-reading by lm_sensors. Anything running that hot won't be stable. I use AMD as well, and lm_sensors tells me something is 1280C. heh ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server hangs on CentOS 5.5
1280C is about the melting point of iron. Wow! The degree symbol was converted to text after pasting into the email and became an '0' It actually shows 128C in lm_sensors. Great little program, tho. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Internet connection sharing?
My centos machine is connected to my MS Windows machine on the net. The MS Windows machine is connected to Internet via valid IP address setting and on its secondary ip address setting it can see my centos machine on the intranet. Connecting any windows based computer directly to the internet is a really really bad idea... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] yum tries to install a mix of architectures
But my question remains is there any way to instruct yum to automatically select the right package architecture through a setting in one of the config files rather than having to specify which architecture you are working with each time. You can place an exclude statement in /etc/yum.conf ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server hangs on CentOS 5.5
I'm running a server which is usually stable, but every once in a while it hangs. There can be many reasons for that. One thing I'm curious about - try looking at the reallocated sector count, and current pending sector count for your drives with smartctl. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server hangs on CentOS 5.5
The only indication that I had that there was a problem (other that attached systems were not accessing files) was that the fan(s) on the server were louder than normal. Are you saying the fans were running faster than normal while it was hung? Or are they louder than usual even while its running? Fans making noise can mean the fan isn't spinning as fast as it should because the bearing is failing. Be a good time to open the case to check to see that all fans are working... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Internet connection sharing?
Windows since XP SP2 has had a perfectly decent firewall built in and enabled by default. Selinux is installed by default too, and usually the first thing that's disabled when something isn't working, just as it is with windows users. You are right about one thing: It's not 1998. It's a lot less safe now than it was then. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Internet connection sharing?
And I know of a major incident, the vector and targets being all Windows systems. Sorry, I literally can't speak about how I know or more details I've been removing java from the computers I service. It's not used much if at all, and it's a vector. On one workstation I monitor, the java uninstaller removed java but left behind the java program's directories. The AV still finds malicious scripts being placed in the java folder after visiting infectious websites. Placed there by an updated version of IE8. Google Chrome , or even Firefox are the way to go for visiting those websites that no one admits to visiting... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] [Newbie] Reclaiming /boot space
If the necessary files are in trash, how do I get copy them back to /boot properly e.g. put them in the crorrect place and how do I know which ones are necessary? There are several files in /boot all containing a kernel version in the name, like: config-2.6.18-194.17.4.el5 initrd-2.6.18-194.17.4.el5.centos.plus.img symvers-2.6.18-194.17.4.el5.centos.plus.gz vmlinuz-2.6.18-194.17.4.el5 etc. There is also an important folder named 'grub', and one additional file named 'message' ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] [Newbie] Reclaiming /boot space
Besides recovering the files, you'll need to delete some of them to free up space. Here's an idea of how to go about it: http://www.howtoforge.com/forums/showthread.php?t=19788 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] centos home router-gateway network setup
I typically use one bridge per network card. I've never thought about assigning all nics to one bridge, but I guess it can work if you managed it. You typically only need one nic to connect to the wan, and one to the lan. Eth2 can certainly have an IP address that's in the same range as your eth1 card. One address can be used as the gateway and the other can be used for file sharing to keep the traffic apart, for example. I'm not sure what you use your centos box for, but it's possible you don't need an eth2 at all... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS and Marvell SAS/SATA drivers
My scepticism regarding SMART data continues ... the flaky drive showed no errors, and a full test and full zero-write using the WD diagnostics revealed no errors either. If the drive is bad, there's no evidence that would cause WD to issue an RMA. I've been having a rash of drive failures recently and I have come to trust SMART. One thing's for sure - SMART is not implemented the same on all drives or controllers. Recently one older Seagate drive showed no SMART capability in linux using the gnome-disk-utility, but I could read the SMART data from the drive in Windows with HD Tune. It isn't infallible, but SMART is certainly one tool you can use in the diagnosis. I wouldn't ignore Reallocated Sector counts or Current Pending Sector counts, for instance. Working for a customer this weekend, I replaced an older 60G WD drive that I knew for months to have bad sectors, but the Reallocated Sector Count was still 0. After a scan for errors with HD Tune, the Current Pending sector count showed 13, but the Reallocated Sector Count never grew. There is still a lot for me to learn - like the relationship between SMART within the drive and the controller's support of SMART. You would think they are independent of each other, but I wonder... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS and Marvell SAS/SATA drivers
Regarding the Marvell drivers, I had good luck with the 'sata_mv' driver in Scientific Linux 6 just yesterday, running a pair of 4-port PCIe-x4 Tempo 'Sonnet' controller cards. Are those the Mac/Windows Sonnet cards that go for less than $200? What kind of performance you seeing? Are you doing software raid on them? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Xen stack scheme
What part of KVM seems immature to you? I deploy public-facing machines using both it and Xen, and I can't really speak to any difference in performance or small-scall management. I like kvm - no issues ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Updating hardware clock from cron
the hardware clock might be off by a lot when it comes back up. If your server was set to use UTC time at install, the hardware clock will always be wrong. Check /etc/adjtime ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS and Marvell SAS/SATA drivers
If the Marvell drivers don't pan out, it looks like I'll have to either spend money on a 3Ware|LSI|Promise controller The 3ware are excellent... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Updating hardware clock from cron
yeah, definately, VM of any sort is a whole different beast, and no way NTP should be run in a virtualized environment. The guests I run in KVM use ntp to keep their time accurate. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] virtualization on the desktop a myth, or a reality?
Yes, I know that I could have used KVM, VMWare or VirtualBox, but I wanted to use what's included already. KVM is included, you just have to select it. There is a loyal following of Xen in the community, but I use KVM for my servers. I'm often called 'dumb' for even talking about KVM, but I like it. (and I'm not saying, nor have I ever said, that KVM is better than Xen) But, using the interface is painfully slow. I opened up Firefox and browsed the web a bit. The mouse cursor lagged a bit and whenever I loaded a slow /large website, it seemed asif the whole VM lagged behind... .. BUT, I want(ed) to see if this is a reality for the average desktop user, or not really (yet?) seeing as most modern PC's have far more CPU RAM resources than what is actually needed by most. I assume you're using VNC to connect? It can be painfully slow with some vnc clients, and workable for basic stuff with others. Using MS remote desktop to connect to a VM running Windows works pretty well, but not when you're trying to view anything with graphics. (like watching videos) There's the SPICE protocol which supposedly handles these problems, although I haven't tried it yet. It would be nice if you could run your OS in a VM, then use some tablet with a huge screen to connect to the VM and not be able to notice a difference in speed. I think that's a ways off in the future, however. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] virtualization on the desktop a myth, or a reality?
You need qemu-spice for using SPICE, which does not ship with RHEL5 or RHEL6. On top of that, SPICE is only supported by Red Hat for RHEV, not libvirt. That may change in the future, ... but when, nobody knows ;-) Well that's certainly disappointing. Any alternatives to spice for centos? I know Microsoft is working on something for their own systems.. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] virtualization on the desktop a myth, or a reality?
Yes, I know KVM is included, but at this stage XEN is the default and when you use the Virtual Machine Manager, it uses XEN. Select Server Gui only, when it's up, use yum to install everything else. I think yum is a better way to install than the OS installer. No, I'm not using VNC. My approach was from a single, non-networked PC-point-of-view. Someone who's never played with Virtual PC's and then opens up Virtual Machine Manager thinking it would be cool to use, wouldn't think of using VNC or something similar. The virt-manager is good for monitoring the boot process, and provides the console you would need to do initial configuring of an OS. But it's not the best way to interact with the desktop of a VM. I thought, just for the fun of it, let's install Windows 2008 Small Business Server. Interestingly, using the same Virtual Machine Manager, the installation wasn't as slow as with CentOS. It's almost asif it's more optimized for Windows? I used the exact same settings for the installation as with CentOS Windows Server does well in a VM, but use Remote Desktop to connect - it's very usable for tasks that you would normally do on a server. Just not good for videos, or graphic intensive programs. Can, or will virtualization replace dual boot systems or even give one the ability to use your Desktop PC to it's full advantage? Dual boot can be problematic judging by the number of support requests on the net. Virtualization certainly has advantages. It's the interfacing with the VM's desktop that's the bottleneck. Spice is what Redhat seems to like at the moment. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos 6 - OT
On Sun, 2011-02-27 at 21:46 -0600, John R. Dennison wrote: The machine has got to be accepted, but it is probably better to accept it rather as one accepts a drug -- that is, grudgingly and suspiciously. Like a drug, the machine is useful, dangerous, and habit-forming. The oftener one surrenders to it the tighter its grip becomes. -- George Orwell (1903-1950), novelist Over here we are perhaps a little more aware he was one of us and he wrote in 'our' language. Our language is so successful at enabling expressive communications that others around the world have mutilated our language whilst attempting to improve upon it :-) Eric Arthur Blair (25 June 1903 - 21 January 1950). 1984 arrived a few years late. With the introduction of fibre optics telecommunications in residential dwellings (coming to our town in July 2011), just how long is the TV set going to stay unidirectional ? Ok that was weird. Entertaining as always... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] PCI ethernet card for CentOS
I see that there are many Realtek RTL8169S gigabit cards going for a song on eBay. I've always liked and used Realtek cards, and I use the RTL8169S in my servers. However, the RTL8169S has one problem: overheating. If you buy any, make sure they include a heatsink. Those without a heatsink are prone to locking up if the temperatures inside your case get too high. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] PCI ethernet card for CentOS
Thanks. I'm going to use it in Italy, so I guess heat is a problem ... I also use the Intel nics (usually the PCI-e version) and they are a lot more expensive, but they are an excellent card. By the way, some of those cards on ebay show a heatsink, but don't rely on the picture - make sure you ask the seller if it is included. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] PCI ethernet card for CentOS
That just confirms my experiences. I've had issues with onboard Realtek cards and linux. On one desktop the Realtek card would work until the box was restarted. You would have to hard power it off and back on for it to work again. That same box worked fine with Windows. The old RTL8139 which is Realtek's 10/100 card have been rock solid for many years, and the RTL8169S gigabit cards are rock solid too, with a heatsink. You can't beat Realtek if you're on a budget. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Detecting harddrive problem
Recently I realize the filesystem became Read-only and there is media error message in the system log. It has passed several days without notice. I'm thinking of setting up a script to grep that media error and send email. Is there more elegant way of doing this? This doesn't really answer your question, but if you issue the command smartctl -a /dev/sdx and see either a Reallocated sectors count, or a Current Pending sector count that's greater than 0, then you need to keep an eye on the drive. It could be failing. (replace /dev/sdx in the command with your drive's actual device) Reallocated sectors count is for failed write attempts, and that number tends to grow after the count gets larger than 0. Current pending sector count is for failed read attempts, which could be a fluke and might correct itself later. It's not as serious as Reallocated sectors. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] funding
Maybe what Centos needs is a bridal registry. Here in the US, an engaged couple can tell their friends what they'd like to be given as wedding presents. They do this by listing items in a registry, in various stores around town. Anyway, the idea is, post stuff you need in a list on your site. Say you need 20 hard drives, or a particular power supply, or whatever items that get consumed in day to day operations. Just list what's needed, who needs it, and whatever info. It doesn't have to be hardware either - just something everyone can agree is OK to list. People visiting the site can look and decide if it's possible to contribute something - even if it's only one new hard drive of the type needed. Or maybe a canister of Columbia's finest coffee. (although I supposed consuming donated foods of any kind from unknown persons is a risk) And should a contributing member have a hardware failure on his own personal workstation, why not ask the world for some charity in return for his/her efforts? Just list what you need, what it is to be used for, and see if we like you enough to give it to you. 'Contributing members' meaning those known to the community, verifiable, and who are putting in the hours, or whatever efforts. And I'm thinking cash donations should be frowned upon because money can be so easily subverted to doing bad things in the world. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Software RAID Level 1, smartd and changing dev numbers
The problem is, the kernel seemingly randomly switches between /dev/sdb and /dev/sdc for these devices. I use the UUID in fstab rather than '/dev/sda', etc ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5 on a Thinkpad T60 laptop
On 2/16/2011 12:41 PM, Robert Heller wrote: The wireless on the X31 is an Intel Corporation PRO/Wireless LAN 2100 3B Mini PCI Adapter (rev 04). Intel wireless chips are *very well* supported *out of the box* under CentOS. You do need to download and install the proper firmware. Isn't being supported out of the box and having to download something else a contradiction in terms? Les Mikesell I don't think so. I take it out of the box means the drivers are in the OS, but the card/hardware needs some updating. Not to mention a catch-22 when your usual connection to download is over wireless... This is certainly true, but that's why ppl pay guys like us to do this for them. Praise Jebus. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Software RAID Level 1, smartd and changing dev numbers
However, we're not set up for UUIDs, the fstab just shows /dev/md0, etc. I mentioned it because I recently installed and set up servers with ubuntu 10.04 and fedora 14, while I was waiting for C6. Using the UUID is the default now. I also found it works fine in C5.5 - you just substitute the UUID for the /dev and format the fstab line properly. However I use raid cards, and I don't know if mdadm can work with the UUID in centos. Sorry if it doesn't... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rescheduling sector linux raid ?
end_request: I/O error, dev sda, sector 451792231 You should run: smartctl -a /dev/sda Look for something like this line: Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0 If that last value is greater than 0, replace the drive... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rescheduling sector linux raid ?
Value is 0, on both drives. It's still possible to have a bad sector, but not have it show up in the Reallocated Sector Count. What does this line say: Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0 Is the last value greater than zero? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization supporting 1000Mbps nics?
I notice that any VMs running under it only have access to Realtek RTL8139C at 100 Mbps nics. In kvm, you have the option to use e1000 or the pv drivers. You can probably specify another nic in xen, but you'll have to research which it supports. Just make sure you retain the mac address, or the OS will see it as a new nic.. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rescheduling sector linux raid ?
last value is 0, on both drives. Looks to me like Smart thinks the drives are fine. Are they over-heating? What drives are they? Have a model number? Ever run memtest86+ on the system? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] server specifications
undetected creeping bit errors due to lack of ECC would be, in my book, unacceptable. Where can one find info or studies on this sort of thing? I use non-ecc ram in several servers, and of course most ppl use it in their desktops. Wouldn't bit errors result in crashes or data corruption? Or what would the results be? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] server specifications
ECC allows for single bit errors to be corrected and multiple bit errors to be noticed. I know what it is and I've used it in the past, but I just don't see many errors going on in desktop computers and servers that use non-ecc ram. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] Resizing EXT3 partition in guest instance CentOS5
Well, I can tell you how I do it. Might help. 1) create a new storage volume of the size you want with Virtual Manager. (Host detailsStorage tab) 2) shut down the VM and add the new volume to the VM ( it now has two virtual drives - the original and the new) 3) boot with clonezilla, clone one drive to the other. Then boot gparted and resize as needed 4) delete both drives from the vm, and then add back the new volume. Boot. 5) keep the old, smaller volume around for a while as backup. When you add a volume, Virtual Manager assigns a device name to it: hda to the first drive, hdb to the second, ect. So, you have to delete them both to get Virtual Manager to assign hda to the new one, otherwise the OS will not be able to boot. ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Resizing EXT3 partition in guest instance CentOS5
You can't add a drive temporarily and have Virtual Manager create the new volume there? I would think even a USB stick would work... ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] RHEL/Centos6 handling disks w/4k sectors?
the best write speed I can get is about 8MB/sec A while back I researched 4k sector drives since most new drives have them now. There is a problem with speed if you get the partition wrong. The answer seems to be to creating a partition with 1 meg of unpartitioned space preceding the first partition. This causes sector 2048 to be the first sector of the partition, and avoids the problem. Newer versions of gparted do this for you automatically when you use it to create a partition. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] LSI MegaRAID 320-2E PCIe RAID Controller
I have an Altos G510 server, (two xeon sockets) and it has a Megaraid scsi 320-0X PCI-X controller that 5.5 recognizes. Maybe there's a chance it will do so for yours... Good luck ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] LiveCD System recovery - Mounting LVM?
I am not sure if this is your problem but what I can determine is that there may be a conflict with the same names of the lvm volumes; ie the old volume that I am trying to mount has the same name as the volume on the machine that is active. I was wondering if you were running into that problem. I've run into it in the past. Centos always uses the same logical group and logical volume names as default for a new install, and you can't mount a foreign LVM if the names conflict. I once set up a test system to try to recover some files from an LVM, and installed centos with no LVM to avoid the conflict, but centos didn't install the lvm tools automatically . (I like using system-config-lvm) However, the tools are easy enough to install with yum. Some live CDs let you install system-config-lvm too. You can also use unique LVM group and vol names when installing centos to avoid this... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] zfs experience
Anyone is trying zfs in linux. Any experience can be shared It's got some great features, but don't install the fuse-zfs version... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] OT: Recommendations for a virtual storage server
I need to install a virtual machine acting as a virtual storage server under CentOS 5.x (using kvm, xen, virtualbox or vmware). Back when I started using virtual machines, I used guests to share large storage. Eventually, I found it was better to let the host do the sharing of storage, and let the guests connect to it. Seems more efficient that way, as well as helping to facilitate backups and maintenance. ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] Ext4 on CentOS 5.5 x64
For those of you that have been using the ext4 technology preview on CentOS 5.5, how has it panned out? Does it perform as expected? How do you feel the stability, creation of the FS and the administration of it is? Ideas and comments welcome. I've recently been using ext4 because I have servers with large(ish) storage volumes, and because I know that the next version of centos will support it better than 5.5. I only use it for storage, where I use rsync to copy terabytes of data to and from the servers. It works fine - it's been set and forget so far. Very fast read/write speeds. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ethernet configuration
'/sbin/ifconfig -a' returns: lo Link encap:Local Loopback Your system is not seeing your network cards. It is only seeing your loopback device. I opened system-administration-network-edit-hardware device, and deleted the mac address from the box, and pressed Probe. In less than 1 second it gave the correct mac address in the box. Probe is not the reason your system has no network. What else did you change? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Recommendation for a Linux alternative to Centos - ATH9K disaster
Any version of Windows is stable - its only when ppl start adding the pretty butterfly screen savers, or open email attachments that things go wrong. It is very vulnerable, especially IE, but with a little education, preventive steps, and decent backups, the majority of businesses in the world that use it manage fine.. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Recommendation for a Linux alternative to Centos - ATH9K disaster
I do IT for local businesses in Denver. I build workstations and servers, do hardware upgrades, networking, VPNs, firewalls, virtual machines - anything a business might need. Windows and linux. Any tech worth his salt will have learned how windows works and how to repair it. It is possible to repair. Same is true of any Linux technician. My first 'real' computer was a Fat Mac, so I still love a good GUI. And Windows has a nice GUI. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Could CentOS 5.5 on newer hardware make it freeze or shutdown?
I have built a new PC on which I've installed CentOS 5.5 64-bit (with updates) which after some hours of running suddenly either hard freeze or instant power off. Can you check a setting in the bios - see if there's an option named: PCI Latency Timer ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] cluster of virtual machines using libvirt/kvm + Gluster
I once tried moving my qcow2 VM guest files to a zfs-fuse volume, and the VMs refused to boot after. They only ran while on ext3 or ext4. Although I wasn't trying at that time, I understand that in order migrate VMs between servers, you need a shared file system. Maybe NFS is the answer? ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
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] Server reboots unexpectebly.
If its two servers doing the same, then I guess it's not likely they both have the same hardware problem. The thing is, that's not something centos is going to do on its own, so it's some program that's been added, or some common bios setting that's wrong. Do they connect to a UPS with a serial/usb cable? Also run memtest86 on them overnight (getting at least one complete iteration). I've seen one memtest iteration pass, but 2 or 3 were needed before a failure showed up. That's not usually the case, though... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Troubles for an non-IT beginner
How can I know that I have to use i386 or x86_64, my machine is not very new though Do some research on your computer - who makes it, what model number, what cpu, how much ram? i386 is 32bit, x86_64 is 64 bit. If you have 4 gigs of ram or more, you'll likely want the 64bit. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Server reboots unexpectebly.
I am in the process of configuring 2 new servers. They are running Centos 5.5 and for the last three days they have been rebooting unexpectedly, can you point me in the right direction what to look for in the logs. I have been checking /var/log/messages but don't see anything that hint me any clues why this is happening. Your input is much much appreciated. Lisandro If there aren't any messages in the logs, then I would have to think this is a hardware issue. Maybe an overheating or power supply problem. These servers have new hardware? Describe your hardware... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] RHCE question
I use Fedora and Ubuntu for various photography and text applications. Can I ask - what kind of photography applications? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ifcfg-rh: error: Unknown connection type 'Bridge'
I get the same errors, but my bridges still work. I keep NetworkManager disabled, but nm-system-settings still parses the files. About the only difference is, I don't assign an ip addresses to the bridge, as my VM clients only use it to access the lan to obtain their own ip addresses. Is something not working? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Kernel Errors Present
Is it the ITE IT8212 ATA RAID Controller ? I would suspect that raid card - the few I've tried didn't work well even with the manufacturer's supplied windows drivers. The linux drivers might not be any better. I'm not sure why you distrust DMA, or if it's just on this one card that you have problems with it. ATA is being phased out now, it became a very mature and reliable technology its it final years. Motherboards with onboard ATA66/100/133 ports became extremely reliable. As long as you used the 80 wire cables. Unfortunately, a good controller is hard to find. I used to like Promise as a windows controller. They were very reliable if you had the lastest firmware and drivers. But I don't know if they work well in linux, or even how well their current models work. (been a while since I've used one) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
