...I've set up RAID-1 on a pair of disks recently. When I reboot I get this in syslog, even though the partition was perfect & not degraded before:
kernel: md1: former device ide/host2/bus0/target0/lun0/part5 is unavailable, removing from array!...
More specifically, of the 4 RAID-1 partitions, md1 (my root partition) is in degraded mode. Here's a snippet of /proc/mdstat:
md1 : active raid1 ide/host2/bus1/target0/lun0/part5[0] 38957440 blocks [2/1] [U_]
All the RAID partitions are of type FD on both disks, and the disks are brand new
This is a stock Debian/testing pc running a stock 2.4.24-1-686 kernel.
Hi Andrew,
I had the same problem today, with debian/testing and both 2.4 and 2.6 kernels.
My root filesystem, a raid 1 device would come up degraded at every reboot, even if it was clean on shutdown.
I solved the problem by creating a new initrd and fiddling with the lilo configuration:
for me,
after re-adding the always-failing drive to the raid
# mdadm -a /dev/md0 /dev/hda1
i updated my lilo.conf to:
... boot=/dev/md0 raid-extra-boot=/dev/hda,/dev/hdc root=/dev/md0 ...
and created a new initrd # mkinitrd -k -r /dev/md0 -o /boot/initrd.img-2.6.3-1-k7
and ran lilo again # lilo
since that reboot, the raid comes up complete.
hope that helps,
cu, philipp
-- When in doubt, use brute force.
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