On 04/10/2012 02:24 PM, Chris Mason wrote:
On Tue, Apr 10, 2012 at 01:39:14PM -0600, Jim Schutt wrote:
Hi,
I hit this BUG today.
I'm running 3.3.1 merged with the ceph and btrfs bits for 3.4,
i.e. 3.3.1 +
commit bc3f116fec194 "Btrfs: update the checks for mixed block groups with big
metadata blocks"
commit c666601a935b9 "rbd: move snap_rwsem to the device, rename to
header_rwsem"
The btrfs filesystem in question is backing a Ceph OSD under
a heavy write load.
Here's the bug:
[510342.517157] ------------[ cut here ]------------
[510342.521855] kernel BUG at fs/btrfs/extent_io.c:3982!
Could you please confirm that line number is this BUG_ON()
BUG_ON(extent_buffer_under_io(eb));
Yep, that's definitely it:
git blame fs/btrfs/extent_io.c | grep -w 3982
0b32f4bb (Josef Bacik 2012-03-13 09:38:00 -0400 3982)
BUG_ON(extent_buffer_under_io(eb));
Josef has a theory on this one, but I want to make sure we're chasing
the right thing.
Great, thanks. I'll be happy to test any patches, if needed.
-- Jim
-chris
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