jeff@xxxxxxxxxx writes:
> I have two RAID1 drives with multiple partitions. > > Each time I reboot, one of the partitions comes up degraded with only one > of > the two devices. The only thing that the kernel logs is: > > [ 13.327731] md/raid1:md3: active with 1 out of 2 mirrors > > I can hot-add the other partition, and wait for mdadm to resync it, but on > the next reboot it's degraded again. This is getting old. > > I note that both drives have md0 through md3. There are no defects on > either > drive. And it's always md3 that fails to be assembled fully, when the > kernel > boots. Can you check the following 1) what does /etc/mdadm.conf say for /dev/md3? it should have a line like: ARRAY /dev/md3 level=raid1 num-devices=2 UUID=1bcb5496:c7d158e6:14c0bbc3:de3ed72e
Check, it does.ARRAY /dev/md3 level=raid1 num-devices=2 UUID=ac2446aa: 661a4977:0960a296:6d0b48c3
2) what does "blkid | grep sd[ab]x" say? (x is the partition number) both should have the same UUID number: /dev/sdb3: UUID="1bcb5496-c7d1-58e6-14c0-bbc3de3ed72e" TYPE="linux_raid_member" /dev/sda3: UUID="1bcb5496-c7d1-58e6-14c0-bbc3de3ed72e" TYPE="linux_raid_member"
Same UUID in my case:/dev/sda5: UUID="ac2446aa-661a-4977-0960-a2966d0b48c3" UUID_SUB="e58c691d- c8ee-d563-564c-8f9a5f69c987" LABEL="monster:3" TYPE="linux_raid_member" /dev/sdb5: UUID="ac2446aa-661a-4977-0960-a2966d0b48c3" UUID_SUB="59e68522-6594-779a-89ac-6ad85b603614" LABEL="monster:3" TYPE="linux_raid_member"
3) what does /etc/fstab show for your boot (root?) partition? should be: UUID=61a11dc6-b7b7-4fb0-893c-83ce87be9324 / ext4 defaults 1 1
It's my /home with a wonky raid, not /. UUID=a38dc534-f0e9-4d43-8675-8052d5b6f900 /home ext3 defaults 1 3
4) what does "blkid | grep md3" show? should be like: /dev/md3: UUID="61a11dc6-b7b7-4fb0-893c-83ce87be9324" TYPE="ext4"
/dev/md3: UUID="a38dc534-f0e9-4d43-8675-8052d5b6f900" TYPE="ext3"
notice the UUID's match for items 1 & 2, they also match for 3 & 4
Yes, everything matches.
Hopefully its this simple and not something else going on.
Nah, it's not as simple as that. Something else is going on.I do see that my problematic md's uuid is not included in the list of uuids passed to the kernel by grub, in /etc/default/grub. It's still getting mounted, well half of it does.
I'm going to add it to /etc/default/grub, rebuild grub2.conf, and see what happens.
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