Hello, I have three MDs on two HDDs in RAID 1. In last days, thanks to my monitoring (which is installed longer time), I have recognized, that one of these MDs is automatically started resync. First was at 25th October and second resync of the same MD was today. It started in same daytime (about 4:00 AM). Now is MD resynced and working well. Can someone tell me what means this automatic resync? Is it standard? Is it means some possible problems with one HDD (but other two MDs are working without resync)? Thank you Martin ??astn?
happymaster23 wrote:> Hello, > > I have three MDs on two HDDs in RAID 1. In last days, thanks to my > monitoring (which is installed longer time), I have recognized, that > one of these MDs is automatically started resync. First was at 25th > October and second resync of the same MD was today. It started in same > daytime (about 4:00 AM). Now is MD resynced and working well. Can > someone tell me what means this automatic resync? Is it standard? Is > it means some possible problems with one HDD (but other two MDs are > working without resync)? > > Thank you > Martin ??astn?Have a look at /etc/cron.weekly Glenn
Thank you very much, this is new feature of 5.4? 2009/11/1 RedShift <redshift at pandora.be>:> happymaster23 wrote: >> Hello, >> >> I have three MDs on two HDDs in RAID 1. In last days, thanks to my >> monitoring (which is installed longer time), I have recognized, that >> one of these MDs is automatically started resync. First was at 25th >> October and second resync of the same MD was today. It started in same >> daytime (about 4:00 AM). Now is MD resynced and working well. Can >> someone tell me what means this automatic resync? Is it standard? Is >> it means some possible problems with one HDD (but other two MDs are >> working without resync)? >> >> Thank you >> Martin ??astn? > > > Have a look at /etc/cron.weekly > > > Glenn > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >
Hi. My question is the same, why so many times my RAID 1 is resynced, when i upgrade to CentOS 5.4 ? Any idea ? With may RAID1 is no all OK ? It is to worry about it ? Jancio Wodnik
When you cat /proc/mdstat does it actually say "syncing" or does it say "checking"? I believe a newer version of mdadm creates a weekly cron job to check the arrays. I first mistakenly assumed it was resyncing and started worrying since it was doing all 8 of my RAID1 arrays at once, but after looking twice I saw it was actually just checking the arrays thanks to a new cronjob. Regards, Oliver On 02/11/2009, at 6:40 AM, Jancio Wodnik wrote:> Hi. > > My question is the same, why so many times my RAID 1 is resynced, > when i > upgrade to CentOS 5.4 ? Any idea ? With may RAID1 is no all OK ? It is > to worry about it ? > > Jancio Wodnik > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos