I'm digging into this some more and it seems that mdadm in Ubuntu 12.04
is detecting an old unused superblock on /dev/sdb that mdadm in Ubuntu
10.04 ignored.
$ mdadm --examine --scan --verbose
ARRAY /dev/md1 level=raid1 num-devices=2
UUID=5fb6928e:89f09cde:d0aebb6f:e3c24c31
spares=1 devices=/dev/sdb
ARRAY /dev/md0 level=raid1 num-devices=2
UUID=a4176cee:096f0ba6:40663db4:2b8b6d2c
devices=/dev/sdc1,/dev/sdb1
When we examine /dev/sdb, we see there's an old superblock there (note
the update date is Thu Jul 7 09:00:21 2011).
$ mdadm --examine /dev/sdb
/dev/sdb:
Magic : a92b4efc
Version : 0.90.00
UUID : 5fb6928e:89f09cde:d0aebb6f:e3c24c31
Creation Time : Fri Jul 1 10:00:58 2011
Raid Level : raid1
Used Dev Size : 1953513408 (1863.02 GiB 2000.40 GB)
Array Size : 1953513408 (1863.02 GiB 2000.40 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 1
Update Time : Thu Jul 7 09:00:21 2011
State : clean
Active Devices : 1
Working Devices : 2
Failed Devices : 1
Spare Devices : 1
Checksum : 57d747d3 - correct
Events : 24
Number Major Minor RaidDevice State
this 2 8 16 2 spare /dev/sdb
0 0 8 33 0 active sync /dev/sdc1
1 1 0 0 1 faulty removed
2 2 8 16 2 spare /dev/sdb
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1164008
Title:
mdadm devices not recognized correctly at boot
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/mdadm/+bug/1164008/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
