Bug#549691: lvm2: lvremove fails to remove open logical volume which is not opened

[Daniel Dehennin]

Hello,

After reporting[1] the workaround[2] of calling dmsetup directly to
schroot, Roger Leigh suggested me to make a report against LVM2 or udev.

I don't know where the problem is exactly, but on my system the bug in
100% reproductible:

#+begin_src
root at home:~# lvcreate -L2G -s /dev/hati/sid-amd64-sbuild -n test
  Logical volume "test" created

root at home:~# lvremove -f /dev/hati/test
  Unable to deactivate open hati-test-cow (254:15)
  Failed to resume test.
  libdevmapper exiting with 1 device(s) still suspended.
#+end_src

I can do that over and over again.

Any lvscan command ran after the failing hangs until I do:

#+begin_src
root at home:~# dmsetup resume /dev/hati/sid-amd64-sbuild
#+end_src

Ask whatever you want me to test to solve this issue, this makes sbuild
unusable on my system without my proposed workaround patch.

Thanks.

Footnotes: 
[1]  http://bugs.debian.org/674682

[2]  http://bugs.debian.org/549691#57

-- 
Daniel Dehennin
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