Discuss

discuss@lists.centos.org

34758 discussions

Re: [CentOS] Race condition with mdadm at boot [still mystifying]
by Chuck Munro 12 Mar '11

12 Mar '11

On 03/11/2011 09:00 AM, Les Mikesell wrote: > > On 3/10/11 9:25 PM, Chuck Munro wrote: > >> > 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. > I've seen some weirdness in powering up 6 or more SATA drives but never > completely pinned down whether it was the controller, drive cage, or particular > drives causing the problem. But I think my symptom was completely failing to > detect some drives when certain combinations of disks were installed although > each would work individually. Do you have any options about whether they power > up immediately or wait until accessed? > That's a good question, one I have experimented with. I don't have any choice as to when the drives are spun up (only on bootup), but I did try a controller card which pre-spun and checked the identification of the drives before handing off to the BIOS for bootup. That didn't help. 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. The drives' SMART data shows that the average spin-up time is well within the BIOS startup delay. Each drive activity indicator shows that they are always probed by the kernel's scsi scan process. I have since tried a couple of other tricks I found by Googling around ... setting the kernel parameters 'rootdelay=xx' and 'scsi_mod.scan=sync'. These had no effect on the problem. For some unfathomable reason, the last drives in each group of drives have one or more random partitions missing, with no 'bind' statement in dmesg. Other partitions on those drives are bound normally. This has been tested with at least two known-good replacement drives, with the same random results. On two occasions today, everything worked perfectly, but that was unusual. A friend of mine suggested an ugly hack - connect two 'dummy' unused old SATA drives to the last port of each controller (I'm using only 6 of 8 on each). I wonder if one of those $15 IDE-to-SATA converters would do the job (without a drive attached)? Foolish thought :-/ Chuck

2 1

screen saver unlock dialog window is not visible in clone mode
by DarkKnight BrightWarrior 12 Mar '11

12 Mar '11

Hi, Environment: I am using CentOS 5.3 operating system. I upgraded xorg of centos to 7.3. I am using intel 945 GM board. My xorg server version is 1.4.2 and inetl driver version 2.4.3. gnome-screensaver version is 2.16.1-8.el5. Problem: I connected another system of same hardware using VGA output. Now I can see clone of my system on secondary display. I enabled screensaver with 1 minute period and also enabled locking feature using gnome-screensaver-preferences. After 1 minute screensaver appeared on both primary and secondary displays. But when I move mouse or press any key, Screen saver unlock dialog is not appearing. But when I type password, I am able to comeout of screensaver. So Screensver unlock dialog is there but it is not visible. When I remove secondary display, I mean when I am in single display mode screen saver unlock dialog is visible and working fine. So what could be the problem that causing screensaver unlock dialog window to appear/visible in clone/extended monitor mode. Please help. Thanks

2 1

Re: [CentOS] Server locking up everyday around 3:30 AM
by m.roth＠5-cent.us 12 Mar '11

12 Mar '11

PJ wrote: > On Fri, Mar 11, 2011 at 11:05 AM, Steve Thompson <smt(a)vgersoft.com> wrote: >> >>> PJ wrote: >>>> Mar 8 03:33:18 web1 kernel: INFO: task wget:13608 blocked for more than 120 seconds. <snip> > Great replies from everyone, I really appreciate the feedback. > > Interesting entries in /var/log/cron: <snip> > Mar 11 03:01:01 web1 crond[13613]: (root) CMD (run-parts /etc/cron.hourly) Mar 11 03:07:20 web1 crond[13727]: (webuser) error: Job execution of per-minute job scheduled for 03:05 delayed into subsequent minute 03:07. Skipping job run. > Mar 11 03:07:20 web1 crond[13727]: CRON (webuser) ERROR: cannot set security context <snip> SELINUX! Look at /var/log/messages for an selinux error: if you don't have sealert, install the package, then use it on /var/log/audit. Or put selinux in permissive mode. mark

2 3

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

2 2

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

11 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

7 11

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.

3 2

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.

2 1

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"

2 1

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

Jump to page:

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

Discuss