I have a CentOS 4.2 with two identical HDDs, and the following software RAID configuration:
/dev/md0 (/boot) defined as RAID1
/dev/md1 (/swap) defined as RAID0
/dev/md2 (/) defined as RAID0
The system seems to have crashed, but no disks seem to have failed. Only /dev/md0 seems to be still active (using cat /proc/mdstat). I understand that RAID0 is not redundant, however using CentOS CD-ROM in rescue mode gives me the opportunity to access my root partition (/dev/md2). I can access my data although in a striped volume. So it seems that this RAID0 volume needs to be somehow 'reactivated'.
In rescue mode, I have created an /etc/raidtab, and then tried to use the following:
raidhotadd /dev/md2 /dev/hda3
raidhotadd /dev/md2 /dev/hdb3
but the response is:
can not hot-add disk: invalid argument
Any help would be appreciated.
Last edited by grpprod; 04-28-2006 at 07:22 AM.