Bug#419209: lvm2: Hangs during snapshot creation

[Klaus Ethgen]

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Hi,

Am Mo den  2. Nov 2009 um 20:37 schrieb Bastian Blank:
> That is a good definition of a race condition. And a quick look around
> shows a Red Hat bug #496100[1], which references two commits that fixed
> it in 2.6.30.

Unfortunately not. The bug seems to get worse at all. So the frequency
how often the bug is triggered will grow and the bug is more bad than
without the patchs. With the patch the lvcreate will also freeze if the
old (etch) version is used. Without the patch only the version from
lenny and above will freeze, the version from etch will just issue a
error.

My test environment:
- - Vanilla kernel 2.6.28.10
- - cherry-picks of the given patches (five all together).
- - File systems all xfs on top of lvm on top of md devices.

Regards
   Klaus
- -- 
Klaus Ethgen                            http://www.ethgen.de/
pub  2048R/D1A4EDE5 2000-02-26 Klaus Ethgen <Klaus at Ethgen.de>
Fingerprint: D7 67 71 C4 99 A6 D4 FE  EA 40 30 57 3C 88 26 2B
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