Bug#804629: linux-image-amd64: Cannot mount LVM RAID1 file system at boot

[Sebastian Bachmann]

Dear maintainer(s) and users affected by this bug,

I was affected by this bug as well. The lvm was created as:
lvcreate --type raid1 --name foo -L 50G bar
with kernel 3.16.36-1+deb8u2 (yesterday).

After an upgrade to 3.16.39-1 (today), the volume would not activate:

[   50.848231] md/raid1:mdX: active with 2 out of 2 mirrors
[   50.850482] mdX: invalid bitmap file superblock: bad magic
[   50.851611] mdX: bitmap file superblock:
[   50.851613]          magic: 55555555
[   50.851615]        version: 1431655765
[   50.851616]           uuid: 55555555.55555555.55555555.55555555
[   50.851618]         events: 134
[   50.851619] events cleared: 134
[   50.851620]          state: 00000000
[   50.851621]      chunksize: 524288 B
[   50.851622]   daemon sleep: 5s
[   50.851623]      sync size: 52428800 KB
[   50.851624] max write behind: 0
[   50.851627] mdX: failed to create bitmap (-22)
[   50.852809] device-mapper: table: 253:26: raid: Fail to run raid array
[   50.853940] device-mapper: ioctl: error adding target to table


There was a second lv (also a --type raid1, but created earlier), that
had some similar issue, but I was able to activate it partialy by using
lvchange -a y --activationmode partial bar/otherfoo

The other LV was not able to be activated even as degraded, thus I
decided to rsync all files from one of the rimages and create a new one...

HTH!

regards

sebastian

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