On Sat, Apr 15, 2006 at 01:19:51PM +0200, Juergen Kreileder wrote:
> I'm using devmapper 1.02.03 and lvm2 2.02.02 with 2.6.16.2,
> nevertheless my logical volumes locked up three time when removing
> snapshots so far. Twice I got BUG at drivers/md/kcopyd.c:146, the
> third time logging stopped at the first lvremove.
> 2.6.15 and earlier kernels in combination with older tools worked fine
> over the last year.
I found several bugs in the snapshot code when I reviewed it,
including (thankfully hard-to-trigger) silent data corruption.
Patches went into 2.6.17-rc1. [There's one unfinished patch
outstanding for a theoretical race that I've only been able to
reproduce under artificial conditions.]
> kernel BUG at drivers/md/kcopyd.c:146!
Probably needs this patch (12th March):
dm snapshot: fix kcopyd destructor
Alasdair
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