My file server crashed (system freeze) the other day.
When restarting, evms logged that three out of four
disks in the set had their superblocks corrupted.
These are the messages:
MDRaid5RegMgr: Region md/md0: MD superblocks found in
objects [hdc1 hdd1 sde1] are not valid. [hdc1 hdd1
sde1] will not be activated and should be removed from
MDRaid5RegMgr: RAID5 region md/md0 is corrupt. The
number of raid disks for a full functional array is 4.
The number of active disks is 1.
This is really sad reading. Can anything be done, or is
I am running Mandriva 2006.0 with rpm packaged evms
version 2.5.1. and kernel 2.6.13. The array was set up
with evms using compatibility mode. Mdadm and
/proc/mdstat does not seem to recognize that there is
an md0 array configured, but other arrays are there. In
evmsgui I can see that the superblocks were indeed
modified on the crash day on all three drives, but I
was not home. All known system activity during the
crash was a running tape backup from the RAID5 array.
Any help is *greatly* appreciated!
Best regards, /Chris