Messages in this thread | | | Date | Thu, 20 Apr 2006 18:05:35 +0100 | From | Alasdair G Kergon <> | Subject | Re: BUG at drivers/md/kcopyd.c:146 (was: [PATCH 1/9] device-mapper snapshot: load metadata on creation) |
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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 -- agk@redhat.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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