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Bug#819171: linux-image-3.16.0-4-amd64: lvm cache cachepool kernel regression, lvm stops working when upgrading from 3.16.7-ckt11-1 to 3.16.7-ckt20-1



Hi Jelle

What did you do to this poor system?

On Thu, Mar 24, 2016 at 02:08:10PM +0100, Jelle de Jong wrote:
> [   27.687179] md/raid1:md0: active with 1 out of 2 mirrors
> [   27.693133] md0: detected capacity change from 0 to 1000194564096
> mdadm: /dev/md0 has been started with 1 drive (out of 2).

One device missing.

> [   27.728351] md/raid1:md1: not clean -- starting background reconstruction
> [   27.735933] md/raid1:md1: active with 2 out of 2 mirrors
> [   27.741938] md1: detected capacity change from 0 to 1000194564096
> mdadm: /dev/md1 has been started with 2 drives.

Unclean.

> [   29.599320] md: resuming resync of md6 from checkpoint.
> [   29.652105] md: resuming resync of md1 from checkpoint.

Resume from checkpoint, so a rebuild was already running.

> [   45.642884] md/raid1:mdX: active with 2 out of 2 mirrors
> [   45.648979] mdX: invalid bitmap file superblock: bad magic
> [   45.655123] mdX: failed to create bitmap (-22)
> [   45.660202] device-mapper: table: 251:7: raid: Fail to run raid array
> [   45.667396] device-mapper: ioctl: error adding target to table

And another raid where just the bitmap is toast.

You could try removing the bitmap with mdadm --grow --bitmap=none.

Bastian

-- 
Warp 7 -- It's a law we can live with.


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