Discuss September 2011

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268 participants
252 discussions

Centos 5.6 : No YUM Updates ?
by Always Learning 03 Sep '11

03 Sep '11

Always Used to seeing regular GUI notices of updates, I also noticed the absence of any. Applications System Tools Software Updater produces none. Neither does yum update yet there was on this List a recent warning about about an Apache vulnerability. -- With best regards, Paul. England, EU.

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CentOS 6.0 and 3ware 9650SE series RAID Performance
by Austin Godber 03 Sep '11

03 Sep '11

Hello, Does anyone have experience using a 3ware 9650SE series raid controller on CentOS 6.0? I am getting very sporadic throughput with moderately sized files (0.5-2GB) on ext3. I have tried most of the mount time tuning options: * noatime * trying different journal types * setting commit=120 - helped a little Even after these optimizations it doesn't seem like the raid array is working as it should. After a few 1GB writes (dd from /dev/zero to the raid) kjournald runs for an hour and later writes are really slow. Not only that, using tw_cli is very slow ... whereas tw_cli is superfast if kjournald is not churning away. So it goes something like this * write one 1GB file (486 MB/s) * writes another (223 MB/s) * any writes before the 120s commit kicks in, is ~200MB/s * commit kicks in and kjournald starts churning * writes are all over the map - 6-85MB/s Maybe this is just the way it is, but it did not seem to be the case this same hardware was running Fedora (Core) 9 and I have a similar machine where this does not seem to be the case (I can't experiment on it at the moment). The one thing I do not know, since I did not create the RAID or ext3 filesystem is whether the stride and stripe-width were properly selected to match the 64k chunk size of the raid array. I don't know how to tell from tune2fs ... output below ... its either not there or by another name. Any help or suggestions are appreciated. Austin Useful Information ============== ============== /proc/mounts ===================== /dev/sda1 /tonga_raid ext3 rw,noatime,errors=continue,nouser_xattr,noacl,commit=120,barrier=1,data=ordered 0 0 ========= tw_cli /c2 show diag ===================== ### Time Stamp: 12:34:18 01-Sep-2011 ### Host Name: tonga ### Host Architecture: x86_64 (64 bit) ### OS Version: Linux 2.6.32-71.29.1.el6.x86_64 ### Model: 9650SE-8LPML ### Serial #: L326025A8221043 ### Controller ID: 2 ### CLI Version: 2.00.11.016 ### API Version: 2.08.00.017 ### Driver Version: 2.26.02.014RH ### Firmware Version: FE9X 3.08.00.016 ### BIOS Version: BE9X 3.08.00.004 ### Available Memory: 224MB ========================================================================== Diagnostic Information on Controller //.../c2/... -------------------------------------------------------------------------- Event Trigger and Log Information: Triggered Event(s) = ctlreset (controller soft reset) fwassert (firmware assert) driveerr (drive error) Diagnostic log save mode = - Parameter table does not exist ========== tune2fs -l /dev/sda1 ================= tune2fs 1.41.12 (17-May-2010) Filesystem volume name: /data Last mounted on: <not available> Filesystem UUID: 3c5f6dbb-d5dc-4f85-bc70-9b761c89c86e Filesystem magic number: 0xEF53 Filesystem revision #: 1 (dynamic) Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery sparse_super large_file Filesystem flags: signed_directory_hash Default mount options: user_xattr acl Filesystem state: clean Errors behavior: Continue Filesystem OS type: Linux Inode count: 427245568 Block count: 1708965879 Reserved block count: 85448293 Free blocks: 809305423 Free inodes: 426287552 First block: 0 Block size: 4096 Fragment size: 4096 Reserved GDT blocks: 616 Blocks per group: 32768 Fragments per group: 32768 Inodes per group: 8192 Inode blocks per group: 512 Filesystem created: Tue Sep 9 09:57:44 2008 Last mount time: Thu Sep 1 12:40:01 2011 Last write time: Thu Sep 1 12:40:01 2011 Mount count: 11 Maximum mount count: -1 Last checked: Tue Aug 30 23:12:49 2011 Check interval: 0 (<none>) Reserved blocks uid: 0 (user root) Reserved blocks gid: 0 (group root) First inode: 11 Inode size: 256 Journal inode: 8 Default directory hash: tea Directory Hash Seed: 0b324311-93a9-4c23-bf15-40965792029b Journal backup: inode blocks =========================================================== =================== tw_cli info c2 ============================ Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy ------------------------------------------------------------------------------ u0 RAID-5 OK - - 64K 6519.19 OFF OFF Port Status Unit Size Blocks Serial --------------------------------------------------------------- p0 OK u0 931.51 GB 1953525168 WD-WCASJ1631953 p1 OK u0 931.51 GB 1953525168 WD-WCASJ1622428 p2 OK u0 931.51 GB 1953525168 WD-WCASJ1639721 p3 OK u0 931.51 GB 1953525168 WD-WCASJ1636054 p4 OK u0 931.51 GB 1953525168 WD-WCASJ1621694 p5 OK u0 931.51 GB 1953525168 WD-WCASJ1636292 p6 OK u0 931.51 GB 1953525168 WD-WCASJ1637586 p7 OK u0 931.51 GB 1953525168 WD-WCASJ1637516 ===========================================================

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Re: [CentOS] Timeframe for httpd update (CVE-2011-3192)
by Voyek, William 03 Sep '11

03 Sep '11

On 09/01/2011 3:20 AM, Karanbir Singh wrote: > the rpm is already pushed, should be on the mirrors now'ish. I cannot find this RPM anywhere on the CentOS mirrors. Am I missing something? The latest version I can find is httpd-2.2.3-45.el5.centos.1.i386.rpm Thanks, William ---------------------------------------------------------------------- CONFIDENTIALITY NOTICE: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to which they are addressed. If you are not the intended recipient, you may not review, copy or distribute this message. If you have received this email in error, please notify the sender immediately and delete the original message. Neither the sender nor the company for which he or she works accepts any liability for any damage caused by any virus transmitted by this email.

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how to install packages via yum using dvd as repo?
by hadi motamedi 03 Sep '11

03 Sep '11

Dear All On my centos 6.0 , how can I install packages via yum using DVD as repo? Actually, the file size is large and the Internet connection speed is low so do we have a solution for it? I am using as the following but unsuccessful : #yum --enablerepo=c6-media install gimp

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VMware tools 1.0.10 on Centos 6?
by tony＠softins.co.uk 02 Sep '11

02 Sep '11

I have an instance of VMware server 1.0.10 hosted on CentOS 5, and it runs fine, with guests of CentOS 4, CentOS5 or Win2000. I have just created a new VM and installed CentOS6 on it, which also runs fine, except that I can't build the VMware tools on it. I get compilation errors when compiling the kernel modules, due to changes in the definition of struct net_device among other things. I saw a suggestion to use open-vm-tools, but looking at the RPMs on the Lucid site, it only talks about versions for ESX. I could try compiling from source, but I wanted to check first whether anyone here has succeeded in installing VMware tools on CentOS 6 for VMware Server. Cheers Tony -- Tony Mountifield Work: tony(a)softins.co.uk - http://www.softins.co.uk Play: tony(a)mountifield.org - http://tony.mountifield.org

4 9

New wireless controller
by Emmett Culley 02 Sep '11

02 Sep '11

I just installed an Asus PCE-n13 wireless card into one of my CentOS 5.6 systems. It uses the RaLink 2680 chip set and I was able to get the driver loaded using modprobe rt2x00pci.ko. I saw no error and now see that the module is loaded along with mac80211 and other dependencies. Now I need to know how to create the wlan0 device. I can find nothing via Google searches on how to create that device. I assumed the driver would do that upon loading, but now I expect some ioctl to the driver command may be required. I created an ifcfg-wlan0 file, but of course ifup wlan0 always returns device not found. Can somebody tell me where to start on getting the wlan0 device created? Emmett

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CentOS 6 Partitioning Help
by Jonathan Vomacka 02 Sep '11

02 Sep '11

*Re-sending as it appears my original e-mail did not go through*. Good Evening All, I have a question regarding CentOS 6 server partitioning. Now I know there are a lot of different ways to partition the system and different opinions depending on the use of the server. I currently have a quad core intel system running 8GB of RAM with 1 TB hard drive (single). In the past as a FreeBSD user, I have always made a physical volume of the root filesystem (/), SWAP, /tmp, /usr, /var, and /home. In the partitioning manager I would always specify 10GB for root, 2GB or so for SWAP, 20GB var, 50GB usr, 10GB /tmp, and allocate all remaining space to my home directory as my primary data volume (assuming all my applications are installed and ran from my home directories). I was recently told that this is an old style of partitioning and is not used in modern day Linux distributions. So more accurately, here are my questions to the list: 1) What is a good partition map/schema for a server OS where it's primary purpose is for a LAMP server, DNS (bind), and possibly gameservers 2) CentOS docs recommend using 10GB SWAP for 8GB of RAM. 1X the amount of physical memory + 2GB added. (Reference: http://www.centos.org/docs/5/html/Installation_Guide-en-US/s1-diskpartition…) I was told this is ridiculous and will severely slow down the system. Is this true? If so, what is a good swap space to use for 8GB of RAM? The university of MIT recommends making MULTIPLE 2GB swap spaces equaling 10GB if this is the case. Please help! 3) Is EXT4 better or worse to use then XFS for what I am planning to use the system for? Thanks in advance for all your help guys Kind Regards, Jonathan Vomacka

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CentOS 6 Partitioning Map/Schema
by Jonathan Vomacka 02 Sep '11

02 Sep '11

Good Evening All, I have a question regarding CentOS 6 server partitioning. Now I know there are a lot of different ways to partition the system and different opinions depending on the use of the server. I currently have a quad core intel system running 8GB of RAM with 1 TB hard drive (single). In the past as a FreeBSD user, I have always made a physical volume of the root filesystem (/), SWAP, /tmp, /usr, /var, and /home. In the partitioning manager I would always specify 10GB for root, 2GB or so for SWAP, 20GB var, 50GB usr, 10GB /tmp, and allocate all remaining space to my home directory as my primary data volume (assuming all my applications are installed and ran from my home directories). I was recently told that this is an old style of partitioning and is not used in modern day Linux distributions. So more accurately, here are my questions to the list: 1) What is a good partition map/schema for a server OS where it's primary purpose is for a LAMP server, DNS (bind), and possibly gameservers 2) CentOS docs recommend using 10GB SWAP for 8GB of RAM. 1X the amount of physical memory + 2GB added. (Reference: http://www.centos.org/docs/5/html/Installation_Guide-en-US/s1-diskpartition…) I was told this is ridiculous and will severely slow down the system. Is this true? If so, what is a good swap space to use for 8GB of RAM? The university of MIT recommends making MULTIPLE 2GB swap spaces equaling 10GB if this is the case. Please help! 3) Is EXT4 better or worse to use then XFS for what I am planning to use the system for? Thanks in advance for all your help guys Kind Regards, Jonathan Vomacka

8 10

centos 6.1
by Jerry Geis 02 Sep '11

02 Sep '11

Hi gang - Just took a look at http://qaweb.dev.centos.org/qa/calendar/ I dont see anything on there for 6.1 Not trying to start flames and I know its ready when its ready and all that - but I was just surprised to see "nothing" on the calendar. jerry

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CentOS-announce Digest, Vol 79, Issue 1
by centos-announce-request＠centos.org 02 Sep '11

02 Sep '11

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CESA-2011:1245 Important CentOS 4 i386 httpd - security update (Tru Huynh) 2. CESA-2011:1245 Important CentOS 4 x86_64 httpd - security update (Tru Huynh) ---------------------------------------------------------------------- Message: 1 Date: Thu, 1 Sep 2011 13:41:08 +0200 From: Tru Huynh <tru(a)centos.org> Subject: [CentOS-announce] CESA-2011:1245 Important CentOS 4 i386 httpd - security update To: centos-announce(a)centos.org Message-ID: <20110901114108.GA27052(a)sillage.bis.pasteur.fr> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory CESA-2011:1245 httpd security update for CentOS 4 i386: https://rhn.redhat.com/errata/RHSA-2011-1245.html The following updated file has been uploaded and is currently syncing to the mirrors: i386: updates/i386/RPMS/httpd-2.0.52-48.ent.centos4.i386.rpm updates/i386/RPMS/httpd-devel-2.0.52-48.ent.centos4.i386.rpm updates/i386/RPMS/httpd-manual-2.0.52-48.ent.centos4.i386.rpm updates/i386/RPMS/httpd-suexec-2.0.52-48.ent.centos4.i386.rpm updates/i386/RPMS/mod_ssl-2.0.52-48.ent.centos4.i386.rpm source: updates/SRPMS/httpd-2.0.52-48.ent.centos4.src.rpm You may update your CentOS-4 i386 installations by running the command: yum update httpd\* Tru -- Tru Huynh (mirrors, CentOS i386/x86_64 Package Maintenance) http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B

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Discuss September 2011