[linux-lvm] LVM hangs

Gionatan Danti g.danti at assyoma.it
Mon Nov 13 17:41:38 UTC 2017

On 13/11/2017 16:20, Zdenek Kabelac wrote:
>> Are you talking about RH bug 1388632?
>> https://bugzilla.redhat.com/show_bug.cgi?id=1388632
>> Unfortunately I can only view the google-cached version of the bugzilla
>> page, since the bug is restricted to internal view only.
> that could be similar issue yes
>> But the google-cached version suggests that the bug is mainly hit when
>> removing the raid-backed cache pool under IO.
>> I my scenario, no modification (like cache removal) of the lvm setup was
>> done when the blocks occured.
> Easiest is to check  'dmsetup status' - just to exclude if it's frozen 
> raid case.

Hi Zdeneck,
due to how easy is to trigger the bug, it seems a very serious problem 
to me. As the bug report is for internal use only, can you shed some 
light on what causes it and how to avoid?

Specifically can you confirm that, if using an "old-school" mdadm RAID 
device, the bug does not apply?


Danti Gionatan
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Assyoma S.r.l. - www.assyoma.it
email: g.danti at assyoma.it - info at assyoma.it
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