Discuss March 2011

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286 participants
250 discussions

rpm 9.7.3 for epel-6 and centos 5.5
by fakessh ＠ 12 Mar '11

12 Mar '11

hello centos list I recompile the source rpm fedora core 14 on my centos 5.5. I wrote a post on my blog to explain how I did. goo.gl/p0sqF I also recompile the rpm via koji to epel 6 and the result is possitive goo.gl/OQwIX package is on it safe sincerely -- gpg --keyserver pgp.mit.edu --recv-key 092164A7 http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x092164A7

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yum tries to install a mix of architectures
by Tim Dunphy 12 Mar '11

12 Mar '11

Hello, On my centos boxes whenever I try to install packages I get a mix of packages from the repos that are both i386 and x86_64 in archictecture: =============================================================================================================================================================================================================== Package Arch Version Repository Size =============================================================================================================================================================================================================== Installing: boost-devel i386 1.33.1-10.el5 base 4.3 M boost-devel x86_64 1.33.1-10.el5 base 4.4 M Installing for dependencies: boost i386 1.33.1-10.el5 base 863 k boost x86_64 1.33.1-10.el5 base 861 k libicu i386 3.6-5.11.4 base 5.2 M libicu x86_64 3.6-5.11.4 base 5.2 M Transaction Summary =============================================================================================================================================================================================================== Install 6 Package(s) Upgrade 0 Package(s) Without having so specify the arch on each yum command how can I automatically prune my yum repo files so that it will only grab packages that relate to the architecture I'm running? Thanks in advance! -- GPG me!! gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B

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debugging auto mount configuration
by Boris Epstein 11 Mar '11

11 Mar '11

Hello there, I successfully use automount to mount a large XFS pargtition on one CentOS 5.5 machine. I then tried to do the same thing on a different machine - and it simply would not work! The configuration is done in the same fashion, I checked and double-checked the syntax - but it is still a no go. When I use the mount command the partition mounts perfectly. I have tried running automount --debug and automount --verbose and thus far have not seen any messages that would shed any light on what's going on. So I am a bit lost at the moment. Any advice on how to proceed would be much appreciated. Boris.

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HTtrack for Centos 5.5 ?
by Always Learning 11 Mar '11

11 Mar '11

Does anyone know how to install HTtrack on Centos 5.5 please ? -- With best regards, Paul. England, EU.

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UDP Perfomance tuning
by Prasad Pillarisetti 11 Mar '11

11 Mar '11

Hi, We are running on 5.5 on a HP ProLiant DL360 G6. Kernel version is 2.6.18-194.17.1.el5 (we had also tested with the latest available kernel kernel-2.6.18-238.1.1.el5.x86_64) We running some performance tests using the "iperf" utility. We are seeing very bad and inconsistent performance on the UDP testing. The maximum we could get, was 440 Mbits/sec, and it varies from 250 to 440 Mbits/sec. We are connected on a 1000Mb/s link, we also tested the same using a cross-over connections between the two machines, but the same performance. We also see a lot of dropped UDP packets. Udp: 551522838 packets received 1902 packets to unknown port received. 109709802 packet receive errors 7239 packets sent We had checked all the kernel configurations and set them as recommended. This is the settings and tests we have done Server: net.core.rmem_default = 2097152 net.core.wmem_default = 2097152 net.core.rmem_max = 8388608 net.core.wmem_max = 8388608 strace -fttt -o /tmp/server.trace iperf -s -u -p 2222 -w 6m -i 5 -l 1k Client: net.core.rmem_default = 2097152 net.core.wmem_default = 2097152 net.core.rmem_max = 8388608 net.core.wmem_max = 8388608 strace -fttt -o /tmp/client.trace iperf -p 2222 -u -w 6m -i 5 -t 60 -c 192.168.1.2 -b 990M -l 1k Can someone please help me with this, since I am running in circles and can't get the required UDP performance? -- Prasad Pillarisetti "If everything is coming your way, then you are in the wrong lane"

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question on modules loaded
by Jerry Geis 11 Mar '11

11 Mar '11

lsmod shows dm_raid45 66509 0 dm_message 6977 1 dm_raid45 dm_region_hash 15681 1 dm_raid45 dm_log 14529 3 dm_mirror,dm_raid45,dm_region_hash dm_mod 62201 4 dm_mirror,dm_multipath,dm_raid45,dm_log dm_mem_cache 9537 1 dm_raid45 I am wondering why these raid modules are loaded as I am not running raid on this particular machine and looking for ways to free up memory. THanks, jerry

1 0

Re: [CentOS] Installation failure
by Chris Weisiger 11 Mar '11

11 Mar '11

Glad you got it working. Most of the power supply checkers aren't worth it. I checked 3 power supplies with a checker and all 3 didnt work on the pc i was working on. It was the power supplies, i took one out of a running pc and the one being worked on powered up. So it is just easier just to swap the power supply out to start with. Chris ----- Original Message ----- From:Mark <mhullrich(a)gmail.com> To:CentOS mailing list <centos(a)centos.org> Cc: Sent:Thursday, March 10, 2011 11:59 PM Subject:Re: [CentOS] Installation failure On Thu, Mar 10, 2011 at 9:01 PM, Chris Weisiger <cweisiger(a)bellsouth.net> wrote: > Try checking the power supply, swap in another one from a different pc. > Yeah, I figured that out about half an hour ago and got it going. Shoulda thought of that up front. Interestingly, I have a power supply tester I bought at CompUSA before they left SoCal, and it said that power supply was fine. Ha ha ha. I think I need a new one, one that actually works.... Thanks, everyone. _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos

2 1

Server hangs on CentOS 5.5
by Michael Eager 11 Mar '11

11 Mar '11

Hi -- I'm running a server which is usually stable, but every once in a while it hangs. The server is used as a file store using NFS and to run VMware machines. I don't see anything in /var/log/messages or elsewhere to indicate any problem or offer any clue why the system was hung. Any suggestions where I might look for a clue? -- Michael Eager eager(a)eagercon.com 1960 Park Blvd., Palo Alto, CA 94306 650-325-8077

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Installation failure
by Mark 11 Mar '11

11 Mar '11

I'm trying to reinstall CentOS on a machine I've reconditioned for it, but for reasons I can't fathom, when the installation disk comes up and prompts for the install type, and I type either <enter> (graphics isntall) or "linux text"<enter>, after it loads the initrd image, the machine shuts off. It's an older machine I built myself (and ran CentOS on for a number of years), AMD Athlon 64 x2, 2GB of memory, 2 SATA hard drives, ECS GE6100PM-M2 motherboard. I should probably even know the answer to this one, but I'm stumped. Any suggestions? Thanks.

4 5

Race condition with mdadm at boot [still mystifying]
by Chuck Munro 11 Mar '11

11 Mar '11

This is a bit long-winded, but I wanted to share some info .... Regarding my earlier message about a possible race condition with mdadm, I have been doing all sorts of poking around with the boot process. Thanks to a tip from Steven Yellin at Stanford, I found where to add a delay in the rc.sysinit script, which invokes mdadm to assemble the arrays. Unfortunately it didn't help, so it likely wasn't a race condition after all. However, on close examination of dmesg, I found something very interesting. There were missing 'bind<sd??>' statements for one or the other hot spare drive (or sometimes both). These drives are connected to the last PHYs in each SATA controller ... in other words they are the last devices probed by the driver for a particular controller. It would appear that the drivers are bailing out before managing to enumerate all of the partitions on the last drive in a group, and missing partitions occur quite randomly. So it may or may not be a timing issue between the WD Caviar Black drives and both the LSI and Marvell SAS/SATA controller chips. So, I replaced the two drives (SATA-300) with two faster drives (SATA-600) on the off chance they might respond fast enough before the drivers move on to other duties. That didn't help either. Each group of arrays uses completely drivers (mptsas and sata_mv) but both exhibit the same problem, so I'm mystified as to where the real issue lies. Anyone care to offer suggestions? Chuck

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Discuss March 2011