Re: [CentOS] Back-up connection
On 8/16/2013 4:33 AM, Timothy Murphy wrote: Some weeks ago, I asked if anyone had set up a backup scheme for a remote server. By backup here, I mean an alternative arrangement that can be called upon if eg the DSL connection to the remote machine fails. Not sure if this is what you are thinking about but I had similar problem back in the day with a router that the only was I could get it back online was to power cycle it. Picked up one these on Ebay for like $30.00 http://www.baytech.net/products/showprod.php?prod=ds2-rpc Was really handy, still have it just in case. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to setup RAID 5 + 1 hot spare?
raid 6 On 1/24/2013 7:37 AM, Wenshan Ren wrote: Rudi Ahlers writes: On Thu, Jan 24, 2013 at 7:59 AM, Ren Wen shan renws1...@gmail.com wrote: Hello everyone, I am new to this group so please forgive me if this question has been already asked. With four identical hard drives, I want to setup RAID 5 + 1 hot spare by a fresh CentOS (6.3) installation. I have read this article ( http://www.centos.org/docs/5/html/Deployment_Guide-en-US/s1-raid-config.html ) and watched this video (http://www.youtube.com/watch?v=qm3MkuTfDLw), now I have the basic ideas. However, due to my limited experience and knowledge on this area, I am still confused. To make things easier, I only need a swap and a `/' partition. Could you give me any hint on this? What should I read to get the basic knowledge? How can I setup a simple RAID 5 + hot spare? Regards, - Meatball ___ Since you're new to this list, and this topic, I'm going to spare you the headache. Don't use RAID5 Even with a hot-spare, if you use large drives chances are you'll loose everything if one of the drive fail and you need to rebuild the whole set. Rather use RAID 10. The newer CentOS installation disks has an option to setup RAID10, alternatively. There are numerous tutorials out there on how todo it, but this one seems quite easy to follow: http://www.youtube.com/watch?v=zlOK1voR2nA Hi Rudi, Thanks a lot for your reply, the video is very helpful. I read this discussion on serverfault.com http://serverfault.com/questions/106131/raid-5-with-hot-spare-or-raid-10-with-no-hot-spare but still quite confused as some people think RAID-10 is way safer while some people wrote: I'd have to disagree with CHopper3. Since there are only 4 drives in this situation your failure capabilities are the same (2 drives) with either scenario, except with raid 10 if you happen to lose the wrong 2 drives then you'll have a real problem. Also there is definitely an added benefit of having a global spare for your other RAIDs as well. My new question is: As RAID 10 requires at least 4 hard drives (not very sure about this information), with only 4 hard disks, is RAID-10 without hot spare a better solution than RAID-5 + 1 hot spare? Why or why not? -- Wenshan Ren Email: renws1...@gmail.com Blog: wenshanren.org Douban: www.douban.com/people/renws ___ 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] wiping out data on a disk (no physical acess to the machine)
Thanks. Is it possible that shred exit abnormally in any case (for example, some files that it relies on have been shreded)? Without physical access to the machine so you can see (and control) what is actually going on, there is no way to 100% guarantee that the data is completely destroyed. If you had some disk space could you create a partition and install a minimalistic Linux version, set your system to boot the minimalistic Linux version, log in and completely destroy any partition you want and you could just leave the minimalistic Linux version. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Order of sata/sas raid cards
I've done that before to get some old data off a drive and the system appended a 1 to all matching label names. On 8/23/2012 5:42 PM, John R Pierce wrote: On 08/23/12 4:15 PM, Jobst Schmalenbach wrote: I will try the LABEL way of doing the problem with labels, there's no guarantee they will be unique. the default labels that the centos installer uses are the same on every system, so if you plug a drive into another computer, the odds are pretty high there will be a collision. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Oracle tries to capture CentOS users
Fernando Cassia wrote: On Fri, Jul 20, 2012 at 2:16 PM, John Hinton webmas...@ew3d.com wrote: Meanwhile, if this is linux.oracle.com, shouldn't Oracle database be included in the 'free version'? No, as IBM doesn´t make DB2 GPL either. It´s the big bucks from the fortune 500 proprietary products which pays -in part- for all the FOSS goodness like OpenJDK, Netbeans, Virtualbox, Glassfish, MySQL, Btrfs, InnoDB, BerkeleyDB... Why don't they just continue to do something more useful like continue the support for OpenSolaris! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Universal server hardware platform - which to choose?
From: Rafał Radecki radecki.ra...@gmail.com We are looking for something rather not expensive but reliable which has a good support. I'd add a few more things to the list. Redundant power supplies dual gig nics dual quad core cpu's raid support w/battery backed cache remote management pick up a 2nd(err..3rd) generation HP DL380G5 There's a lot of equipment around and can be had for a good price. Save enough to even pick up a second one and keep on site for RD and equipment/parts backup. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] we want to delete all files in a folder except the files with the most recent date
#!/bin/sh
find /files/* -mtime +2 -exec rm {} \;
On 6/19/2012 12:26 AM, mav...@telenet.be wrote:
Hi,
We want to delete all files in a folder except the files with the most recent
date
example
ls -l
jun 3 10:45 file1
jun 3 12:20 file2
jun 2 10:20 file3
jun 2 05:00 file4
jun 1 12:00 file5
jun 1 10:00 file6
jun2 en jun1 must be deleted
regards,
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Re: [CentOS] PCI/DSS compliance on CentOS
wow, seems like quite a lot. What level of PCI/DSS compliance are you going for? The only other thing I might add Are you hosting the hardware? If it's hosted else where then the facility that's hosting the hardware needs to be PCI/DSS complaint. On 5/25/2012 10:22 AM, Arun Khan wrote: I have a client project to implement PCI/DSS compliance. The PCI/DSS auditor has stipulated that the web server, application middleware (tomcat), the db server have to be on different systems. In addition the auditor has also stipulated that there be a NTP server, a patch server, The Host OS on all of the above nodes will be CentOS 6.2. Below is a list of things that would be necessary. 1. Digital Certificates for each host on the PCI/DSS segment 2. SELinux on each Linux host in the PCI/DSS network segment 3. Tripwire/AIDE on each Linux host in the PCI/DSS segment 4. OS hardening scripts (e.g. Bastille Linux) 5. Firewall 6. IDS (Snort) 6. Central “syslog” server However, beyond this I would appreciate any comments/feedback / suggestion if you or your organization has undergone a PCI/DSS audit and what are the gotchas that you encountered, especially with respect to CentOS/ open source stack. I came across this which kind of brings out issues between the implementer and the PCI/DSS auditor. http://webmasters.stackexchange.com/questions/15098/pci-dss-compliance-for-a-vps-using-centos Thanks very much. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] PCI/DSS compliance on CentOS
What level of PCI/DSS compliance are you going for? I have to check this with the client. Credit card information will be encrypted and stored in client's own db. Yup, this is exactly what they don't want people to do and I believe in the future they'll strive for just a handful of processors that will meet there criteria. The client will be hosting it on their own office premise (the physical security aspect is being handled by another vendor). I'm sure I'm talking way over my head at this point but this must be for a fairly large merchant (1M+ transactions yearly). Not quite sure why one wouldn't use one of processors gateway facilities, there's convenient api's that would handle anything to do with cc's and at a small fraction of the price to set up and maintain. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] bridge connection and two linux servers
On 4/16/2012 8:04 AM, Arif Hossain wrote: I need to set up following network architecture : Internet ^ +-+ | +--+ | Centos6-1 | | | Centos6-2 | | + eth0 + + | | | (br0)| || | | + eth1 ++ eth0 | +-++--+ ( cable connection ) Two public IP's are to be configured like follows : + **eth0** and **eth1** of **Centos6-1 are to be configured as a bridge with IP1 - **Centos6-1** can be accessed with IP1 - **eth0** of **Centos6-2** is configured with IP2 - any request destined to IP2 will flow through **Centos6-1** How can i accomplish this feat? Not sure if I'm understanding this You're trying to present a service running on box 2 to the internet through box 1's public interface? (securely) If so I might have a look at this software http://www.delegate.org/delegate/ You'll be able to create a reverse proxy on box 1 to box 2 or any services running on your internal network, etc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Updating/Backing Up Server
Matt wrote: I am slowly migrating the data etc off an old CentOS32 4.x server to a new CentOS64 5.x server. The old server only has 15Gbyte of its hard drive in use. Is there an easy/safe way to copy the entire contents of old server root directory to a directory on the new server for future reference? Most of the data is various test files, perl scripts, etc. scattered all over. tar? If possible, save and install old drive into new server and mount when/if you need something. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] confidence in partitioning tool (6.2)
On Mon, Jan 30, 2012 at 8:14 AM, Larry Martelllarry.mart...@gmail.com wrote: I have a Windows 7 laptop that I want to make dual boot with CentOS 6.2. My plan was to use the Windows Disk Management tool to partition the disk, but I do not have the needed admin rights on the box to use that. Has anyone used the partitioning tool that comes with 6.2 to do snip Maybe a little different answer than you're looking for But why not install VMware Workstation (free)? Unless there's some specific reason, now a days, me personally, I wouldn't do it any other way. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Can anyone talk infrastructure with me?
option for me than getting their ADSL2+ service? I mean, is the T faster over all given it is all my traffic and I am not sharing? Can you explain a bit so I can develop a better understanding of how they advertise speeds, etc? Yes, the cost for a T1 will seem very high. It is antiquated telco tech. T1s are generally very reliable, but very very slow. 1.5Mbps is not faster than 40Mbps. There's nothing hidden in the way they advertise speeds. DSL and DOCSIS technologies have advanced and matured over the last couple of decades. T1 has not. A T1 connection is the same now as it has always been. Not so much haven't matured but are capable of some other technologies besides internet access that the local CO could setup, like channelizing and different types of signaling, not to mention a dedicated circuit to the CO. I might compare SLA of the two. Might find a drastic difference. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS and LessFS
We have been looking at implementing deduplication on a backup server. If not LessFS can you suggest an alternate deduplication software? http://openindiana.org/ Solaris 11 Express http://www.freebsd.org/releases/9.0R/announce.html (ZFS pool version = 28) ___ 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. We've been thinking of using the MaxMind GeoIP Country database with Apache mod_geoip API to limit certain countries visiting our websites. Has anyone used this or have any input on it's usefulness? ___ 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?
On 12/31/11 2:17 PM, Ken godee wrote:
We've been thinking of using the MaxMind GeoIP Country database with
Apache mod_geoip API to limit certain countries visiting our websites.
Has anyone used this or have any input on it's usefulness?
the virus/worm folks will just move to open relays that are not
blocked. I have something like 1/2 the total IP space blocked on this
one forum I host that seems to attract a very large number of bogus
signups, and it hasn't abated the 50-100/day of fake registrations yet.
there's now 1700 subnets and another 1000 specific IPs blocked. I can
tell they are robotic assisted fake registrations because the 'Bio'
field ('about you, why you want to join this forum') is always filled
with one of 4 specific entries (LO qUe eS bRaKbEaT, Me gusta la
guasa, Loading..., or less often, Robot). initially, the vast
majority of these fake registrations came from china, russia. now they
are coming from everywhere since I have almost all of china and russia
blocked.
Grrr... didn't think of that. A quick google shows plenty of free or low
cost US proxy servers. That would be the first thing I would do.
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Re: [CentOS] CentOS 6 x86_64 can't detect raid 10
Dear All, I just got a new server with the following specifications: motherboard : Intel S5500BC CPU : Xeon Quad Core 2.6Ghz RAM : 8GB HDD : 4 x 2TB SATA with configured raid 10 using raid embedded server. The problem is the centos installer can't detect raid virtual disk. I can't find any log error with the following error messages during installation process: Disks sda, sdb, sdc, sdd contain BIOS RAID metadata but are not part of any recognized BIOS RAID sets. I'm already use search engine to find the information regarding to this issue, but I can't find the solutions for CentOS. Thanks in advance I believe it's possible, it's just that you need to install the drivers. CentOS/RedHat does not include them. I would start here with the Intel Deployment Assistant http://www.intel.com/design/servers/ism/deployment.htm ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Refresh all packages?
Hello, I have dedicated server on CentOS Linux 6.1 with webmin/virtualmin and it tell me: Package updates 145 updates to system packages are available. Use the Virtualmin Package Updates module to install them selectively. 4 updates to Virtualmin packages are available. Use the Virtualmin Package Updates module to install them selectively. Should I update all packages? Sure, if you want to stay current and move along to 6.2 Update Webmin too. Yum update should take care of it. Of coarse it's always nice to make a snapshot/backup in case things go screwy. Which really should not unless you've gone off the standard install. (beside Webmin) ___ 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?
password? That's what I'm talking about -- how often does this sort of thing happen, where you need to be subscribed to be a security mailing list in order to know what workaround to make to stay safe, as opposed to simply running yum-updatesd to install latest patches automatically. Happens all the time! Count on it! If running any server available to the public there is no set and forget if you're responsible for that server you best stay informed/subscribed and ready to take action be it a work around, update or whatever. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Reboot problem with Apache
I have CentOS 6 and with webmin/virtualmin panel, and each time that I reboot Apache can't start: Starting httpd: (98)Address already in use: make_sock: could not bind to address [::]:80 (98)Address already in use: make_sock: could not bind to address 0.0.0.0:80 no listening sockets available, shutting down I do: netstat -tulpn| grep :80 tcp0 0 :::80:::* LISTEN 1584/httpd killall -9 httpd And then Apache can start. But do you why thos problem in each reboot? I like to fix this problem. Thansks you. Ernesto Possibly Webmin and Apache are stepping on each other add a virt ip for webmin example Apache eth0 192.168.1.126:80 Webmin eth0:1 192.168.1.127:80 setup hosts webmin.host.com should be good to go ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Reboot problem with Apache
Webmin doesn't need Apache to run it uses miniserv.pl Apache and miniserv.pl are trying to bind to the same ip. That is unless you have set up a virtual server to run webmin under Apache? Default, webmin does not use Apache. On 12/10/2011 12:59 PM, Craig White wrote: On Sat, 2011-12-10 at 14:44 -0500, Weplica wrote: Quoting James A. Peltierjpelt...@sfu.ca: - Original Message - | I have CentOS 6 and with webmin/virtualmin panel, and each time that I | reboot Apache can't start: | | | Starting httpd: (98)Address already in use: make_sock: could not bind | to address [::]:80 | (98)Address already in use: make_sock: could not bind to address | 0.0.0.0:80 | no listening sockets available, shutting down | | I do: | | netstat -tulpn| grep :80 | tcp 0 0 :::80 :::* LISTEN 1584/httpd | | | killall -9 httpd | | | And then Apache can start. But do you why thos problem in each reboot? | I like to fix this problem. | | Thansks you. | | Ernesto Is there another web server starting before Apache? For example, nginx. You could try and use lsof -pPID or lsof -i :80 to see what is holding the port before Apache. Thanks James, I get this: lsof -i :80 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME httpd 1507 root5u IPv6 10107 0t0 TCP *:http (LISTEN) lsof -p 1507 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME httpd 1507 root cwdDIR9,0 40962 / httpd 1507 root rtdDIR9,0 40962 / httpd 1507 root txtREG9,0 993010 14161559 /usr/sbin/httpd httpd 1507 root memREG9,0 1532908 2363869 /lib/libdb-4.7.so httpd 1507 root memREG9,0 185388 14161462 /usr/lib/libapr-1.so.0.3.9 httpd 1507 root memREG9,019784 2360213 /lib/libdl-2.12.so httpd 1507 root memREG9,016868 2360449 /lib/libuuid.so.1.3.0 httpd 1507 root memREG9,064876 14162016 /usr/lib/httpd/modules/mod_auth_digest.so httpd 1507 root memREG9,030491 14162017 /usr/lib/httpd/modules/mod_authn_alias.so httpd 1507 root memREG9,023617 14162020 /usr/lib/httpd/modules/mod_authn_default.so httpd 1507 root memREG9,029186 14162027 /usr/lib/httpd/modules/mod_authz_owner.so httpd 1507 root memREG9,031057 14162025 /usr/lib/httpd/modules/mod_authz_groupfile.so httpd 1507 root memREG9,0 126754 14162043 /usr/lib/httpd/modules/mod_ldap.so httpd 1507 root memREG9,0 310244 2363873 /lib/libldap-2.4.so.2.5.6 httpd 1507 root memREG9,057340 2363855 /lib/liblber-2.4.so.2.5.6 httpd 1507 root memREG9,019166 14162063 /usr/lib/httpd/modules/mod_version.so httpd 1507 root memREG9,0 122436 2360428 /lib/libselinux.so.1 httpd 1507 root memREG9,0 101064 2360426 /lib/libresolv-2.12.so httpd 1507 root memREG9,0 179160 14161860 /usr/lib/libsmime3.so httpd 1507 root memREG9,012164 2363852 /lib/libplds4.so httpd 1507 root memREG9,016676 2363851 /lib/libplc4.so httpd 1507 root memREG9,0 102740 14157933 /usr/lib/libsasl2.so.2.0.23 httpd 1507 root memREG9,075952 2360207 /lib/libz.so.1.2.3 httpd 1507 root memREG9,060383 14162022 /usr/lib/httpd/modules/mod_authnz_ldap.so httpd 1507 root memREG9,023789 14162024 /usr/lib/httpd/modules/mod_authz_default.so httpd 1507 root memREG9,0 104808 14161529 /usr/lib/httpd/modules/mod_include.so httpd 1507 root memREG9,064831 14162044 /usr/lib/httpd/modules/mod_log_config.so httpd 1507 root memREG9,051697 14162039 /usr/lib/httpd/modules/mod_ext_filter.so httpd 1507 root memREG9,051499 14161519 /usr/lib/httpd/modules/mod_deflate.so httpd 1507 root memREG9,034634 14162056 /usr/lib/httpd/modules/mod_setenvif.so httpd 1507 root memREG9,045364 14161527 /usr/lib/httpd/modules/mod_headers.so httpd 1507 root memREG9,042731 14162046 /usr/lib/httpd/modules/mod_mime.so httpd 1507 root memREG9,052524 14162058 /usr/lib/httpd/modules/mod_status.so httpd 1507 root memREG9,032409 14162057 /usr/lib/httpd/modules/mod_speling.so httpd 1507 root memREG9,030144 14161553 /usr/lib/httpd/modules/mod_userdir.so httpd 1507 root memREG9,025588 14162021 /usr/lib/httpd/modules/mod_authn_file.so httpd 1507 root memREG9,0 298818 14161516 /usr/lib/httpd/modules/mod_dav.so httpd 1507 root memREG9,088126 14162048 /usr/lib/httpd/modules/mod_negotiation.so httpd 1507 root memREG9,0 179791 14162049 /usr/lib/httpd/modules/mod_proxy.so httpd 1507 root memREG9,077416 14162053 /usr/lib/httpd/modules/mod_proxy_ftp.so httpd 1507 root memREG9,034498 14162052
Re: [CentOS] Reboot problem with Apache
When I start manual way: # killall -9 httpd # service httpd start Starting httpd: Apache/2.2.15 mod_ssl/2.2.15 (Pass Phrase Dialog) Some of your private key files are encrypted for security reasons. In order to read them you have to provide the pass phrases. Server kuales.com:443 (RSA) Enter pass phrase: OK: Pass Phrase Dialog successful. Can I submit RSA key in automatic way? ___ http://wiki.apache.org/httpd/RemoveSSLCertPassPhrase ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ssd quandry
Maybe try to partition it to see what happens. On 10/23/2011 12:07 AM, John R Pierce wrote: On a CentOS 6 64bit system, I added a couple prototype SAS SSDs on a HP P411 raid controller (I believe this is a rebranded LSI megaraid with HP firmware) and am trying to format them for best random IO performance with something like postgresql. so, I used the raid command tool to build a raid0 with 2 SAS SSDs # hpacucli ctrl slot=1 logicaldrive 3 show detail Smart Array P410 in Slot 1 array C Logical Drive: 3 Size: 186.3 GB Fault Tolerance: RAID 0 Heads: 255 Sectors Per Track: 32 Cylinders: 47869 Strip Size: 256 KB Status: OK Array Accelerator: Enabled Unique Identifier: 600508B1001C2EDB6026F9ADF9F88A09 Disk Name: /dev/sdc Mount Points: /ssd 186.3 GB Logical Drive Label: AF36B716PACCRCN810E1R9J646A # hpacucli ctrl slot=1 show config Smart Array P410 in Slot 1(sn: PACCRCN810E1R9J) array C (Solid State SAS, Unused Space: 0 MB) logicaldrive 3 (186.3 GB, RAID 0, OK) physicaldrive 1I:1:23 (port 1I:box 1:bay 23, Solid State SAS, 100 GB, OK) physicaldrive 1I:1:24 (port 1I:box 1:bay 24, Solid State SAS, 100 GB, OK) # hpacucli ctrl slot=1 show ssdinfo detail Smart Array P410 in Slot 1 Total Solid State Drives with Wearout Status: 0 Total Smart Array Solid State Drives: 2 Total Solid State SAS Drives: 2 Total Solid State Drives: 2 array C physicaldrive 1I:1:23 Port: 1I Box: 1 Bay: 23 Status: OK Drive Type: Data Drive Interface Type: Solid State SAS Size: 100 GB Firmware Revision: 1234 Serial Number: 99 Model: XYZZY M2011 Current Temperature (C): 30 Maximum Temperature (C): 37 SSD Smart Trip Wearout: Not Supported PHY Count: 2 PHY Transfer Rate: 6.0GBPS, Unknown physicaldrive 1I:1:24 Port: 1I Box: 1 Bay: 24 Status: OK Drive Type: Data Drive Interface Type: Solid State SAS Size: 100 GB Firmware Revision: 1234 Serial Number: 99 Model: XYZZY M2011 Current Temperature (C): 29 Maximum Temperature (C): 36 SSD Smart Trip Wearout: Not Supported PHY Count: 2 PHY Transfer Rate: 6.0GBPS, Unknown # tail /var/log/messages Oct 22 22:56:24 svfis-dl180b kernel: sd 0:0:0:3: Attached scsi generic sg3 type 0 Oct 22 22:56:24 svfis-dl180b kernel: sd 0:0:0:3: [sdc] 390611040 512-byte logical blocks: (199 GB/186 GiB) Oct 22 22:56:24 svfis-dl180b kernel: sd 0:0:0:3: [sdc] 8192-byte physical blocks Oct 22 22:56:24 svfis-dl180b kernel: sd 0:0:0:3: [sdc] Write Protect is off Oct 22 22:56:24 svfis-dl180b kernel: sd 0:0:0:3: [sdc] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA Oct 22 22:56:24 svfis-dl180b kernel: sdc: unknown partition table Oct 22 22:56:24 svfis-dl180b kernel: sd 0:0:0:3: [sdc] Attached SCSI disk Oct 22 22:56:36 svfis-dl180b cmaeventd[2540]: Logical drive 3 of Array Controller in slot 1, has changed from status Unconfigured to OK # mkfs.ext4 /dev/sdc mke2fs 1.41.12 (17-May-2010) /dev/sdc is entire device, not just one partition! Proceed anyway? (y,n) y Filesystem label= OS type: Linux Block size=8192 (log=3) Fragment size=8192 (log=3) Stride=1 blocks, Stripe width=0 blocks 12210528 inodes, 24413190 blocks 1220659 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=4311218176 373 block groups 65528 blocks per group, 65528 fragments per group 32736 inodes per group Superblock backups stored on blocks: 65528, 196584, 327640, 458696, 589752, 1638200, 1769256, 3210872, 5307768, 8191000, 15923304, 22476104 Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done # mount -t ext4 /dev/sdc /ssd mount: wrong fs type, bad option, bad superblock on /dev/sdc, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so # tail /var/log/messages ... Oct 22 23:54:36 svfis-dl180b kernel: EXT4-fs (sdc): bad block size 8192 ok, so lets try 4K blocks? # mkfs.ext4 -b 4096 /dev/sdc mke2fs 1.41.12 (17-May-2010) /dev/sdc is entire device, not just one partition! Proceed anyway? (y,n) y mkfs.ext4: Invalid argument while setting blocksize; too small for device hmmm. can't do that either? can I configure this 64bit system for large pages or something so it will support 8K blocks?
Re: [CentOS] CentOS 6 Partitioning Help
The server which is housed at the datacenter only has a single 1TB drive. Just to confirm, LVM allows you to increase and decrease space on any partition on the fly, but setting each volume manually with EXT4 is a physical mount? If I were to set hard limits by setting each volume on EXT4 (not using the LVM option), do you recommend only setting up a /, /boot, and SWAP? In the past this was my partition scheme: Root filesystem (/) = 10240MB (10GB) /boot = 200MB swap = 1024MB (1GB) /var = 20480MB (20GB) /tmp = 10240MB (10GB) /usr = 51200MB (50GB) /home = all remaining space on the drive Is the above a bad partition? Man, a thread like this could go on for a long, long time.. In the last couple of years I find myself more in the John r. camp. Keeping OS separated from data. Having the OS on a 10gb part and keeping all data, including home dirs off the OS. part. Your OS is not likely to grow much, but your data will and it's very easy to move/copy the data partitions more manageable for backups too. I use this kind of set up on hosts on ESXi, windows, EC2. What's you backup strat, how about disaster recovery? Do you need snap shots, or do you need to freeze the file system or mount data part ro for your backups? Ext4, XFS, reiserfs, LVM, cough, cough, I'm very fond of zfs, sigh, maybe someday. Keep in mind some file systems can grow, but not shrink. I think the best bet is to install a couple of test systems vmware style and hack around a little. Test your backup and disaster recovery methods, grow/shrink partitions, test associated fs tools. You might find you're more comfortable doing/using certain things. oh disk1 /boot / /swap disk2 /data (including home if needed) my 2c ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] resize2fs
I am trying to resize a centos (5.2) VM drive. I use VMware and I have increased the size of the drive by 40G. I am running resize2fs on /dev/sdb1 (which is my root partition) but when I do I get this error: [root@centos ~]# resize2fs /dev/sdb1 120G resize2fs 1.39 (29-May-2006) The containing partition (or device) is only 19970795 (4k) blocks. You requested a new size of 31457280 blocks. How can I change the block size? I have also tried to use gparted live cd but it will not allow me to increase the size even though it sees 40g of unused space. I can only create a new partition. Any help would be appreciated. I just ran into same kinda of thing and I for one found much easier to create new virtual 40gb drive, restore backup, drop old drive, use new one. done. If anything goes wrong you still have old virtual drive you can go back to. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] [OT] Remote control of a WinXP machine from a Linux host
That was my initial idea, but seems too complicated to work out, so I asked for a possible easier alternative. :-) Might be to easy an alternative. http://www.gotomypc.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Disabling shutdown and suspend for normal users
For Reboot and Halt this works. Setting SuspendCommand= does nothing. Suspend still shows up in the menu, and hangs the machine. Create your own GDM theme and customize exactly how you want it. Here's ours, users have no access to anything but logging in. http://www.perfect-image.com/images/scrn.gif ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] backing up with dump and DLT
Please, I'm now looking in google but I'd like to hear your opinion about this error... Try the dump users list.. https://lists.sourceforge.net/lists/listinfo/dump-users ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
