[linux-lvm] Testing ThinLVM metadata exhaustion

Gionatan Danti g.danti at assyoma.it
Wed Apr 27 11:11:00 UTC 2016

> I absolutely agree with you that in no case metadata exhaustion can be
> considered part of a "regular work-flow". At the same time, I often do
> "stress test" specifically crafted to put the software/hardware in the
> worst possible condition. In this manner, should an exceptionally bad
> situation occour, I know how to deal with it.
> I have another question: does this bug only happen when metadata space
> is exausted? I am asking this because searching for other peoples with
> the same error message, I read this bug report:
> http://www.redhat.com/archives/dm-devel/2014-March/msg00021.html
> The bug described in the message above does not necessarily happen at
> metadata exaustion time, as confirmed here:
> https://bugzilla.kernel.org/show_bug.cgi?id=68801
> I understand that these are old (2014) bugs and that were fixed in Linux
> 3.14 but, using thin LVM volumes in production systems (albeit with RH 7
> only), I want to be reasonably sure that no show-stopper bug can hit me.
> Are current RH OSes (6.7 and 7.2) immune from this bug (metadata
> corruption even if tmeta is not full)?
> Thanks.

Hi all,
any thoughts on that?


Danti Gionatan
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