Discuss July 2008

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347 participants
435 discussions

lvm errors after replacing drive in raid 10 array
by Mike 18 Jul '08

18 Jul '08

I thought I'd test replacing a failed drive in a 4 drive raid 10 array on a CentOS 5.2 box before it goes online and before a drive really fails. I 'mdadm failed, removed', powered off, replaced drive, partitioned with sfdisk -d /dev/sda | sfdisk /dev/sdb, and finally 'mdadm add'ed'. Everything seems fine until I try to create a snapshot lv. (Creating a snapshot lv worked before I replaced the drive.) Here's what I'm seeing. # lvcreate -p r -s -L 8G -n home-snapshot /dev/vg0/homelv Couldn't find device with uuid 'yIIGF9-9f61-QPk8-q6q1-wn4D-iE1x-MJIMgi'. Couldn't find all physical volumes for volume group vg0. Volume group for uuid not found: I4Gf5TUB1M1TfHxZNg9cCkM1SbRo8cthCTTjVHBEHeCniUIQ03Ov4V1iOy2ciJwm Aborting. Failed to activate snapshot exception store. So then I try # pvdisplay --- Physical volume --- PV Name /dev/md3 VG Name vg0 PV Size 903.97 GB / not usable 3.00 MB Allocatable yes PE Size (KByte) 4096 Total PE 231416 Free PE 44536 Allocated PE 186880 PV UUID yIIGF9-9f61-QPk8-q6q1-wn4D-iE1x-MJIMgi Subsequent runs of pvdisplay eventually returns nothing. pvck /dev/md3 seems to restore that but creating a snapshot volume still fails. It's as if the "PV stuff" is not on the new drive. I (probably incorrectly) assumed that just adding the drive back in to the raid array would take care of that. I've searched quite a bit but have not found any clues. Any one? -- Thanks, Mike

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Raw device gone after reboot (Centos 5.2)!!!
by mcclnx mcc 18 Jul '08

18 Jul '08

We are set up CENTOS 5.2 (X86) as our database server. I created raw partitions and also put definition on /etc/sysconfig/rawdevices. I can use "raw -qa" see raw partitions. The wield things is after reboot /dev/raw is not exist any more. Does anyone know how to fix it? Thanks. _______________________________________________________________________________________________________ 總會在某些時刻，突然想起舊情人？他現在過得還好嗎？ http://sev.search.yahoo.net

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nfs high load issues
by Monty Shinn 18 Jul '08

18 Jul '08

Greetings. When I "pull" data from server A to server B, with nfs, server B reports a high load when viewed via uptime. The load is upwards of 6.x. Server A's load remains light. When I "push" the data, server A's and B's loads are relatively light. When I change the mount point from nfs to cifs, I don't see this problem. I also don't have this problem using scp. I don't recall seeing these excessive load factors when these servers ran Centos 4.x. I have noticed these problems with 5.1 and 5.2. I updated the servers from 5.1 to 5.2 yesterday. I actually have 3 servers set up the same way, and all 3 exhibit the same problem. iostat reports nothing unusual - the cpu idle percentage hovers around the high 80's to 90's. I am not seeing any network errors or collisions when viewed via ifconfig. These servers are on a gigabit network, connected via a good 3Com switch. I am getting transfer rates averaging around 55MB/sec using scp, so I don't think I have a network/wiring issue. The nics are intel 82541GI nics on a Supermicro serverboard X6DH8G. I am not currently bonding, although I want to if the bandwidth will actually increase. Both server's filesystems are ext3, 9TB, running raid 50 on a 3Ware 9550SX raid card. I have performed the tuning procedures listed on 3Ware's website. The "third" server has an XFS filesystem, and the same problem exists. I am using the e1000 driver (default on install). The servers are 64 bit, and have 2 gigs of memory. Adding memory didn't help the situation. I have tried turning autoneg off on the nic. They are running 1000baseT, full duplex. I have varied the nfs rsize and wsize parameters to no avail. I am using nfs v3. nfsv4's configs seem quite a bit different, and I haven't had a chance to familiarize myself with the changes. Any ideas or suggestions would be greatly appreciated. TIA, Monty

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End of support / life
by Sam Drinkard 18 Jul '08

18 Jul '08

Since I'm not ready to upgrade to the CentOS 5 line anytime soon, Can someone tell me when support for the 4 line will come? Many thanks... Sam

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bcm43xx CentOS5
by Michael Simpson 18 Jul '08

18 Jul '08

Hi there, i am looking for a bit of advice on how to proceed with a wee problem that i am having. I have a BCM4306 pcmcia card (one of the later revisions) that i use to connect to my wpa2 wireless network. This is running on an old Dell Latitude (circa 1999). I used to use fedora (7,8 and then 9) on this but 2.6.23 and 2.6.25 stopped populating various bits of /proc/acpi with the relevant information for the cpu temp sensor to be read accurately (lm_sensors doesn't detect any sensors either in 2.x or 3.x) so i am reliant on the kernel to do the necessary magic. I had been using bcm43xx then b43 to access the card with the 4.x firmware from openwrt and all was good - speedy responsive etc Got fed up with kernel updates attempting to fry the laptop as i after 2.6.23 i had to replace the mobo (opened bugzilla report, no action taken, not complaining coz hey it's a 440BX-M so is fairly unimportant in the overall scheme of things) So, as every other box in the house now runs CentOS i installed that instead. dl'd the bcm43xx-fwcutter from Karanbir (thanks btw!) cut out the bits from the 3.x firmware from the link on linuxwireless.org, altered modprobe.conf etc. Wireless now works but is *real slow* just for internet access (like minutes for pages to load). ssh, ping etc all good and quick I am wondering if it is because of the old version of BCM43xx that is in the 2.6.18 kernel (never liked softMAC much) or if something else is going on. top occasionally shows me that Xorg is sometimes going to 70-80% of cpu useage. The desktop is always really responsive and apart from the browsing issue which is upsetting my partner loads then CentOS sems ideal for this laptop. I really don't want to go back to using ndiswrapper and wondered if anyone had any pointers other than using another box with which to ssh -Y firefox & Am away from the laptop atm but if any further info is needed, dmesg, lspci etc then i will be able to provide them when i am home this evening (about 5hrs hence) Thanks in advance mike

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CentOS-announce Digest, Vol 41, Issue 9
by centos-announce-request＠centos.org 18 Jul '08

18 Jul '08

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. CentOS 5 i386 - The CentOS-5.2 i386 Live CD is released (Patrice Guay) 2. CESA-2008:0599 Critical CentOS 4 ia64 seamonkey - security update (Pasi Pirhonen) 3. CESA-2008:0598 Critical CentOS 4 ia64 firefox - security update (Pasi Pirhonen) 4. CESA-2008:0599 Critical CentOS 4 s390(x) seamonkey - security update (Pasi Pirhonen) 5. CESA-2008:0546-01: Moderate CentOS 2 i386 php security update (John Newbigin) 6. CESA-2008:0599-01: Critical CentOS 2 i386 seamonkey security update (John Newbigin) ---------------------------------------------------------------------- Message: 1 Date: Thu, 17 Jul 2008 09:27:37 -0400 From: Patrice Guay <patrice(a)centos.org> Subject: [CentOS-announce] CentOS 5 i386 - The CentOS-5.2 i386 Live CD is released To: centos-announce(a)centos.org Cc: distro(a)distrowatch.com Message-ID: <487F48C9.8000002(a)centos.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed The CentOS Development team is pleased to announce the availability of the CentOS 5.2 i386 Live CD. This CD is based on our CentOS-5.2 i386 distribution. It can be used as a Workstation, with the following software: # openoffice.org 2.3.0 # firefox 3.0 # thunderbird 2.0.0 # pidgin 2.3.1 # scribus 1.3.3.2 # xchat 2.6.6 # k3b 0.12.17 # gimp 2.2.13 It can also be used as a rescue CD with the following tools: # memtest86+-1.65 # Full set of LVM and RAID command line tools # QTParted # Nmap and NMapFE # traceroute # samba-3.0.28 with cifs kernel support to connect to Windows file shares # System Log Viewer # GUI Hardware Device Manager ================================================================ The CentOS Live CD project home page is here: https://projects.centos.org/trac/livecd/ Live CD build scripts, screenshots, booting from a USB key, custom Live CD Creation and other information is available there. ================================================================ The CentOS 5.2 i386 Live CD is based on the Fedora livecd-tools project: http://fedoraproject.org/wiki/FedoraLiveCD ================================================================ You can get the CentOS 5.2 i386 Live CD from the CentOS mirrors: http://isoredirect.centos.org/centos/5/isos/i386/ * Filename: CentOS-5.2-i386-LiveCD.iso * Size: 730816512 * MD5Sum: 32ec33037004f35505aad533f25c2f93 * SHA1Sum: bc333a58644bd4e9d1b6c07ccea73b154d80e093 ================================================================ Release Notes: LiveCD Release Notes: http://wiki.centos.org/Manuals/ReleaseNotes/CentOSLiveCD5.2 CentOS-5.2 Release Notes: http://wiki.centos.org/Manuals/ReleaseNotes/CentOS5.2 upstream Release Notes here: http://www.centos.org/docs/5/html/release-notes/as-x86/index.html CentOS-5 Documentation is here: http://www.centos.org/docs/5/ ================================================================ The CentOS Project would like to thank Patrice Guay for the creation of this CD. Patrice did the CentOS-5.0 and CentOS-5.1 live CD and graciously donated his time and effort to make this one too. We would also like to thank the CentOS QA team for testing this LiveCD and their many suggestions to make it better. ================================================================ To stay current with CentOS: Visit our website at http://www.centos.org/ Join the CentOS mailing list at: http://lists.centos.org/mailman/listinfo/centos Catch the Wiki at http://wiki.centos.org Join various team members on IRC at irc.freenode.net #centos ================================================================ Thanks, The CentOS Development Team ------------------------------ Message: 2 Date: Thu, 17 Jul 2008 17:02:56 +0300 From: Pasi Pirhonen <upi(a)centos.fi> Subject: [CentOS-announce] CESA-2008:0599 Critical CentOS 4 ia64 seamonkey - security update To: centos-announce(a)centos.org Message-ID: <20080717140256.GY31936(a)centos.fi> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory 2008:0599 https://rhn.redhat.com/errata/RHSA-2008-0599.html The following updated files have been uploaded and are currently syncing to the mirrors: ia64: updates/ia64/RPMS/seamonkey-1.0.9-16.4.el4.centos.ia64.rpm updates/ia64/RPMS/seamonkey-chat-1.0.9-16.4.el4.centos.ia64.rpm updates/ia64/RPMS/seamonkey-devel-1.0.9-16.4.el4.centos.ia64.rpm updates/ia64/RPMS/seamonkey-dom-inspector-1.0.9-16.4.el4.centos.ia64.rpm updates/ia64/RPMS/seamonkey-js-debugger-1.0.9-16.4.el4.centos.ia64.rpm updates/ia64/RPMS/seamonkey-mail-1.0.9-16.4.el4.centos.ia64.rpm updates/ia64/RPMS/seamonkey-nspr-1.0.9-16.4.el4.centos.ia64.rpm updates/ia64/RPMS/seamonkey-nspr-devel-1.0.9-16.4.el4.centos.ia64.rpm updates/ia64/RPMS/seamonkey-nss-1.0.9-16.4.el4.centos.ia64.rpm updates/ia64/RPMS/seamonkey-nss-devel-1.0.9-16.4.el4.centos.ia64.rpm -- Pasi Pirhonen - upi(a)iki.fi - http://pasi.pirhonen.eu/ Top-postings silently ignored

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Bonding and Xen
by Victor Padro 18 Jul '08

18 Jul '08

Does anyone has implemented this sucessfully? I am asking this because we are implementing Xen on our test lab machines, which they hold up to three 3com and intel Nics 10/100mbps based. These servers are meant to replace MS messaging and intranet webservers which holds up to 5000 hits per day and thousands of mails, and probably the Dom0 could not handle this kind of setup with only one 100mbps link, and could not afford changing all the networking hardware to gigabit, at least not yet. Any pointers perhaps? Greetings from Mexico. -- "It is human nature to think wisely and act in an absurd fashion." "Todo el desorden del mundo proviene de las profesiones mal o mediocremente servidas"

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freenx vs vmware console
by Les Mikesell 18 Jul '08

18 Jul '08

After upgrading to 5.2 and the current freenx, when I start the vmware server console (from VMware-server-1.0.6-91891) in the NX client I get Xlib: extension "XFree86-VidModeExtension" missing on display ":1000.0". in the terminal window where vmware was started and a black screen where the console of the virtual machine is supposed to be. Is there a way to make this work? I would normally ssh/freenx/vnc directly to the virtual machine but for the cases that need console access I would much rather use NX with the host machine with the vmware console conneced locally than use the vmware console remotely. -- Les Mikesell lesmikesell(a)gmail.com

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Custom CentOS iso's
by Tracy R Reed 18 Jul '08

18 Jul '08

I have a consulting client who has a Linux based storage appliance which is based on Fedora Core 2. I'll pause here while you laugh... They need to upgrade to something more easily supported and CentOS is the chosen distro. They have the source RPM's for their old system stored in CVS and have a very weird/complicated build system to turn it all into an iso which I am still figuring out. They version control their source rpm's but don't really use CVS version numbers to number their distros. Instead they build an iso and name/number that and then have to keep the iso around forever. I want to go through their CVS, pick out the stuff we want to port to CentOS and trash the rest. And keep it all version controlled at the same time. The current thinking is that we want to get off of CVS and move to Mercurial. Given the above and that we want to customize our CentOS build what is the best way to do that? I am thinking we would like to work with the source rpm's. Putting binaries under version control which can just be built from the source seems silly. If we put the source rpm's and any associated build scripts in version control then given any particular repository version number we should be able to reproduce any installable ISO we created in the past. I am imagining that we will have a huge source tree of exploded SRPMS and we will go through the old CVS and evaluate all of the customizations they made and whichever are worthy can be hacked into the SRPMS, RPM's get built out of these, and an ISO gets built out of the RPM's. Does all of this sound feasible? Does CentOS already have tools for automating a complete iso build from an SRPM repository? Thanks! -- Tracy R Reed Read my blog at http://ultraviolet.org Key fingerprint = D4A8 4860 535C ABF8 BA97 25A6 F4F2 1829 9615 02AD Non-GPG signed mail gets read only if I can find it among the spam.

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racoon and ipsec issues
by Bill Campbell 18 Jul '08

18 Jul '08

I am attempting to create an ipsec tunnel between two CentOS 5.1 systems, network-to-network with two different 192.168.xxx.0/24 LAN segments. I have gone through the documentation on the centos web site, and have the machines to the point where the /var/log/messages show ``IPsec-SA established'' on both machines after runnig ``ifup ipsec0'' (same ipsec0 on each machine). IP forwarding is configured in /etc/sysctl.conf and in the proper /proc ``file''. ``netstat -rn'' shows a reasonable looking route on each machine with the gateway as the private IP for the internal LAN. The iptables on each machine are totally clear with no filters. Attempting to ping the private interface on the remote machine results in this where the xx.xx... is the IP address of the public LAN. >From xx.xx.xxx.xxx icmp_seq=2 Destination Host Unreachable Running tcpdump on another Linux box on the remote network that is our main connection to the internet so sits between the remote machine and our T1 does not show any packets from the machine attempting to ping the remote or attempting to make an ssh connection to the remote machine's private IP. At this point I'm at a loss as what to try to debug this. My previous IPsec experience was with Freeswan on an older SuSE box which is quite different in the system setup. The centos/rh documentation is not totally clear what IP is meant by SRCGW, but looking at the ifcfg-ipsec script, it assigns the private IP of the internal network NIC if SRCGW is not set. I expected to see an ``ipsec0'' device from ``ifconfig'', as was done with freeswan, but either that's not the case with ipsec-tools or I have something hosed. Bill -- INTERNET: bill(a)celestial.com Bill Campbell; Celestial Software LLC URL: http://www.celestial.com/ PO Box 820; 6641 E. Mercer Way Voice: (206) 236-1676 Mercer Island, WA 98040-0820 Fax: (206) 232-9186 Liberty don't work as good in practice as it does in speeches. Will Rogers

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Discuss July 2008