[Bug 551264] [NEW] lvm dies while snapshotting

[Jamie Strandboge]

Public bug reported:

While preparing security updates using sbuild and lvm snapshots, I get
hard lockups. I use ext4 in my snapshots with root on software raid 1
(also ext4).

Reproducer:
1) schroot -c dapper -u root
2) schroot -c dapper -u root
3) in each chroot 'apt-get build-dep klamav'
4) wait awhile for each to download the debs and start unpacking
5) ctrl+c in each then 'exit' in each. one will exit, the other will churn
6) in the one that exited, do 'schroot -c dapper -u root' while the other is still churning

At this point I see '05lvm killed' (presumably from
/etc/schroot/setup.d) and everything hard locks. I don't have an oops or
traceback in dmesg. This may be related to bug #543617 (which also
affects me).

$ uname -a
Linux severus 2.6.32-18-generic #27-Ubuntu SMP Fri Mar 26 21:13:44 UTC 2010 x86_64 GNU/Linux

$ cat /proc/version_signature
Ubuntu 2.6.32-18.27-generic 2.6.32.10+drm33.1

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu Lucid)
     Importance: Undecided
         Status: New


** Tags: lucid regression-potential

** Also affects: linux (Ubuntu Lucid)
   Importance: Undecided
       Status: New

** Tags added: regression-potential

** Tags added: lucid

** Summary changed:

- lvm dies while snapshoting
+ lvm dies while snapshotting

-- 
lvm dies while snapshotting
https://bugs.launchpad.net/bugs/551264
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