Hi,
I was running 4x9GB SCSI disks as a raid-0 /dev/md0 under redhat-5.2
(I was using kernel 2.2.3). I upgraded the sytem to redhat-6.0 (with the
standard modular 2.2.5 kernel), and things fell over. I tried running
mkraid --upgrade but it barfed because of some problem with chunk-size.
Never mind, I had a backup :) so I recreated the raid with mkraid and
mke2fs and copied everything there. Rebooted the machine, and it fell
over during startup while it was trying to detect the raid again.
Anyway, it seems that if you mkraid --really-force (which I would expect
to kill the fs) and then try and mount things (ie without mke2fs on it
first) I get my old file system back. I have a feeling this is maybe
something to do with autoloading the raid-0 module... /proc/mdstat
doesn't show anything unless I've run mkraid. Maybe I should build a
kernel with raid-0 in built (not a module)?I know addraid and raidstart
are deprecated, but I tried them anyway to no avail. Has anyone else had
this problem, or even better know of a solution? It's kind of urgent, or
a bunch of chemists are going to kill me (it runs their home dirs for a
Beowulf cluster). I can't keep bringing the machine up in single user
mode to kludge bringing the disk up!
Thanks, Duncan.
--
Duncan Grove
+61 8 8303 6166
[EMAIL PROTECTED]
Secure yourself to heaven,
Hold on tight the night has come,
Fasten up your earthly burdens,
You have just begun. <><
