Jeff Breidenbach wrote:
... and all access to array hangs indefinitely, resulting in unkillable zombie
processes. Have to hard reboot the machine. Any thoughts on the matter?
===
# cat /proc/mdstat
Personalities : [raid1]
md1 : active raid1 sde1[6](F) sdg1[1] sdb1[4] sdd1[3] sdc1[2]
488383936 blocks [6/4] [_UUUU_]
unused devices: <none>
# mdadm --fail /dev/md1 /dev/sde1
mdadm: set /dev/sde1 faulty in /dev/md1
# mdadm --remove /dev/md1 /dev/sde1
mdadm: hot remove failed for /dev/sde1: Device or resource busy
# mdadm -D /dev/md1
/dev/md1:
Version : 00.90.03
Creation Time : Sun Dec 25 16:12:34 2005
Raid Level : raid1
Array Size : 488383936 (465.76 GiB 500.11 GB)
Device Size : 488383936 (465.76 GiB 500.11 GB)
Raid Devices : 6
Total Devices : 5
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Fri Dec 7 11:37:46 2007
State : active, degraded
Active Devices : 4
Working Devices : 4
Failed Devices : 1
Spare Devices : 0
UUID : f3ee6aa3:2f1d5767:f443dfc0:c23e80af
Events : 0.22331500
Number Major Minor RaidDevice State
0 0 0 - removed
1 8 97 1 active sync /dev/sdg1
2 8 33 2 active sync /dev/sdc1
3 8 49 3 active sync /dev/sdd1
4 8 17 4 active sync /dev/sdb1
5 0 0 - removed
6 8 65 0 faulty /dev/sde1
This is without doubt really messed up! You have four active devices,
four working devices, five total devices, and six(!) raid devices. And
at the end of the output seven(!!) devices, four active, two removed,
and one faulty. I wouldn't even be able to make a guess how you go to
this point, but I would guess that some system administration was involved.
If this is an array you can live without and still have a working system
I do have a thought, however. If you can unmount everything on this
device and then stop it, you may be able to assemble (-A) it with just
the four working drives. If that succeeds you may be able to remove
sde1, although I suspect that the two removed drives shown are really
caused by partially removal of sde1 in the past. Either that or you have
a serious problem with reliability...
I'm sure others will have some ideas on this, if it were mine a backup
would be my first order of business.
--
Bill Davidsen <davidsen@xxxxxxx>
"Woe unto the statesman who makes war without a reason that will still
be valid when the war is over..." Otto von Bismark
-
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
