I've been having a recurring problem for about two months
now.
I have a brand new server where suddenly everything except
the web service stops responding.
When looking at the console I can see messages like:
end_request: I/O error, dev sdb, sector 42644555
end_request: I/O error, dev sdb, sector 42644555
end_request: I/O error, dev sdb, sector 42644555
end_request: I/O error, dev sdb, sector 124365763
end_request: I/O error, dev sdb, sector 124365763
[...]
My array setup can be summarized as follows:
# cat /proc/mdstat
Personalities : [raid1]
md2 : active raid1 sda3[0] sdb3[1]
75473280 blocks [2/2] [UU]
[===>.................] resync = 19.0% (14366720/75473280)
finish=51.4min speed=19791K/sec
md3 : active raid1 sda4[0] sdb4[1]
803136 blocks [2/2] [UU]
md1 : active raid1 sda2[0] sdb2[1]
3911744 blocks [2/2] [UU]
md0 : active raid1 sda1[0] sdb1[1]
224768 blocks [2/2] [UU]
After a while the array rebuilds without problems. Then the
system runs anywhere from 5 to 15 days and crashes again.
This is using kernel: 2.6.18-4-686 #1 SMP (Debian kernel)
I have two questions that I hope someone can answer:
* Am I safe to assume that since the array rebuilds that the
disks themselves should be OK?
* Why is the md device not being downgraded?
Thanks,
Alberto
--
Alberto Alonso Global Gate Systems LLC.
(512) 351-7233 http://www.ggsys.net
Hardware, consulting, sysadmin, monitoring and remote backups
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