hi, it's been a few weeks since rhel/centos 5.4 released and there were many discussion about this new "feature" the weekly raid partition check. we've got a lot's of server with raid1 system and i already try to configure them not to send these messages, but i'm not able ie. i already add to the SKIP_DEVS all of my swap partitions (since i read it on linux-kernel list that there can be mismatch_cnt even though i still not understand why?). but even the data partitions (ie. all of my servers all raid1 partitions) produce this error (ie. ther mismatch_cnt is never 0 at the weekend). and this cause all of my raid1 partitions are rebuild during the weekend. and i don't like it:-( so my questions: - is it a real bug in the raid1 system? - is it a real bug in my disk which runs raid (not really believe since it's dozens of servers)? - the /etc/cron.weekly/99-raid-check is wrong in rhel/centos-5.4? or what's the problem? can someone enlighten me? thanks in advance. regards. -- Levente "Si vis pacem para bellum!"
Farkas Levente wrote:> hi, > it's been a few weeks since rhel/centos 5.4 released and there were many > discussion about this new "feature" the weekly raid partition check. > we've got a lot's of server with raid1 system and i already try to > configure them not to send these messages, but i'm not able ie. i > already add to the SKIP_DEVS all of my swap partitions (since i read it > on linux-kernel list that there can be mismatch_cnt even though i still > not understand why?). but even the data partitions (ie. all of my > servers all raid1 partitions) produce this error (ie. ther mismatch_cnt > is never 0 at the weekend). and this cause all of my raid1 partitions > are rebuild during the weekend. and i don't like it:-( > so my questions: > - is it a real bug in the raid1 system? > - is it a real bug in my disk which runs raid (not really believe since > it's dozens of servers)? > - the /etc/cron.weekly/99-raid-check is wrong in rhel/centos-5.4? > or what's the problem? > can someone enlighten me? > thanks in advance. > regards. > >I too run raid 1 on all my CentOS machines and have no such errors - each machine has 3 or 4 partitions mirrored on two drives, one of which is swap. I checked 6 of my servers today all fully up-to-date 5.4 and no issues. -------------- next part -------------- A non-text attachment was scrubbed... Name: rkampen.vcf Type: text/x-vcard Size: 121 bytes Desc: not available URL: <http://lists.centos.org/pipermail/centos/attachments/20091130/7b54dea7/attachment-0003.vcf>
W dniu 30.11.2009 14:08, Farkas Levente pisze:> hi, > it's been a few weeks since rhel/centos 5.4 released and there were many > discussion about this new "feature" the weekly raid partition check. > we've got a lot's of server with raid1 system and i already try to > configure them not to send these messages, but i'm not able ie. i > already add to the SKIP_DEVS all of my swap partitions (since i read it > on linux-kernel list that there can be mismatch_cnt even though i still > not understand why?). but even the data partitions (ie. all of my > servers all raid1 partitions) produce this error (ie. ther mismatch_cnt > is never 0 at the weekend). and this cause all of my raid1 partitions > are rebuild during the weekend. and i don't like it:-( > so my questions: > - is it a real bug in the raid1 system? > - is it a real bug in my disk which runs raid (not really believe since > it's dozens of servers)? > - the /etc/cron.weekly/99-raid-check is wrong in rhel/centos-5.4? > or what's the problem? > can someone enlighten me? > thanks in advance. > regards. > >Hi. I have this problem on my 2 servers (Both Centos 5.4) - every weekend my raid1 set is rebuild, because mismatch_cnt is never 0 at the weekend. What is really going on ? My 1TB disk whith raid1 are rebuild every weekend. Has anybody make bugzilla this ? Jancio_wodnik -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20091130/ec784c20/attachment-0003.html>
Jancio Wodnik wrote:> W dniu 30.11.2009 14:08, Farkas Levente pisze: >> hi, >> it's been a few weeks since rhel/centos 5.4 released and there were many >> discussion about this new "feature" the weekly raid partition check. >> we've got a lot's of server with raid1 system and i already try to >> configure them not to send these messages, but i'm not able ie. i >> already add to the SKIP_DEVS all of my swap partitions (since i read it >> on linux-kernel list that there can be mismatch_cnt even though i still >> not understand why?). but even the data partitions (ie. all of my >> servers all raid1 partitions) produce this error (ie. ther mismatch_cnt >> is never 0 at the weekend). and this cause all of my raid1 partitions >> are rebuild during the weekend. and i don't like it:-( >> so my questions: >> - is it a real bug in the raid1 system? >> - is it a real bug in my disk which runs raid (not really believe since >> it's dozens of servers)? >> - the /etc/cron.weekly/99-raid-check is wrong in rhel/centos-5.4? >> or what's the problem? >> can someone enlighten me? >> thanks in advance. >> regards. >> >> > Hi. I have this problem on my 2 servers (Both Centos 5.4) - every > weekend my raid1 set is rebuild, because > > mismatch_cnt is never 0 at the weekend. What is really going on ? My 1TB disk whith raid1 are rebuild every weekend. >They aren't being rebuilt, they are being checked if the data on the RAID disks are consistent. There are various reasons why mismatch_cnt can be higher than 0, for example aborted writes. Generally it's not really something to be worried about if you have for example a swap partition in your RAID array. If you do a repair and then a check the mismatch_cnt should reset to 0.> Has anybody make bugzilla this ? > >I don't think so, this is a feature, not a bug... And as long as it's shipped with upstream it'll be shipped with CentOS. Best regards, Glenn