Package: mdadm
Version: 2.6.7.2-3
Severity: normal
The misbehavior occurred on a system different from the one being used
to file this report. The actual system had a 2.6.30-2-amd64 kernel
(stock debian).
md1 looked like this:
/dev/md1:
Version : 00.90
Creation Time : Mon Dec 15 06:50:18 2008
Raid Level : raid1
Array Size : 730523648 (696.68 GiB 748.06 GB)
Used Dev Size : 730523648 (696.68 GiB 748.06 GB)
Raid Devices : 2
Total Devices : 1
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Thu Dec 3 16:12:41 2009
State : clean, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
UUID : b77027df:d6aa474a:2a09e10c:740d4ffc
Events : 0.30940
Number Major Minor RaidDevice State
0 0 0 0 removed
1 8 19 1 active sync /dev/sdb3
checkarray, or rather its log output, did not indicate there was any
problem with md1.
Expected result: a log message like "md1 is degraded".
I also expected that the system would automatically recover the
missing device. I don't know if that is the intended behavior.
The reasons the device got separated are murky, but there appears to
have been a hardware problem. Also, the removal of the missing part
happened during an usuccessful reboot; because the root device
changed, the root partition was never mounted.
Details of the setup.
8 core system with 2 identical SATA disks.
md0 is made from sda1 and sdb1.
md1 is made from sda3 and sdb3.
sda3 is the part that got kicked out.
I am currently running
mdadm /dev/md1 --re-add /dev/sda3
which appears to be recovering the lost partition.
-- System Information:
Debian Release: 5.0.3
APT prefers stable
APT policy: (500, 'stable'), (50, 'unstable'), (40, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.6.26-2-686 (SMP w/2 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/bash
Versions of packages mdadm depends on:
ii debconf 1.5.24 Debian configuration management sy
ii libc6 2.7-18 GNU C Library: Shared libraries
ii makedev 2.3.1-88 creates device files in /dev
mdadm recommends no packages.
mdadm suggests no packages.
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