I added a device, /dev/nbd0, to a level1 software raid.
After it was done recovering, I --failed and --remove the device.
Now mdadm -X claims the device has an invalid bitmap:
turnip:~ # mdadm -X /dev/nbd0
Filename : /dev/nbd0
Magic : 00007fee
mdadm: invalid bitmap magic 0x7fee, the bitmap file appears to be corrupted
Version : 524288
mdadm: unknown bitmap version 524288, either the bitmap file is
corrupted or you need to upgrade your tools
turnip:~ #
kernel 2.6.31.5, openSUSE 11.2, mdadm 3.0.2 (25 Sep 09)
I seem to have encountered this before - as I recall, the remove and
then re-add the bitmap to the device while all components were
present.
NOTE: after the recovery finished, all 2 of 2 devices were present.
mdadm -X /dev/sde (the other device in the raid) looks like this:
Filename : /dev/sde
Magic : 6d746962
Version : 4
UUID : 75e9d8ba:47cfeb96:431070f1:84d3b1f3
Events : 109186
Events Cleared : 104694
State : OK
Chunksize : 256 KB
Daemon : 5s flush period
Write Mode : Normal
Sync Size : 72612988 (69.25 GiB 74.36 GB)
Bitmap : 283645 bits (chunks), 4481 dirty (1.6%)
and mdadm --detail /dev/md12 looks like this:
/dev/md12:
Version : 1.01
Creation Time : Wed Jun 17 12:09:11 2009
Raid Level : raid1
Array Size : 72612988 (69.25 GiB 74.36 GB)
Used Dev Size : 72612988 (69.25 GiB 74.36 GB)
Raid Devices : 2
Total Devices : 1
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Tue Dec 8 10:41:20 2009
State : active, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
Name : turnip:12 (local to host turnip)
UUID : 75e9d8ba:47cfeb96:431070f1:84d3b1f3
Events : 109186
Number Major Minor RaidDevice State
0 8 64 0 active sync /dev/sde
1 0 0 1 removed
Ideas?
--
Jon
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