[linux-lvm] Unexptected filesytem unmount with thin provision and autoextend disabled - lvmetad crashed?

Zdenek Kabelac zdenek.kabelac at gmail.com
Tue May 24 17:17:29 UTC 2016

On 24.5.2016 16:28, Gionatan Danti wrote:
> Il 24-05-2016 16:17 Zdenek Kabelac ha scritto:
>> Dmeventd should not talk to lvmetad at all - I'm saying this for years....
>> There are some very very hard to fix (IMHO) design issues - and
>> locking lvmetad in memory would be just one of wrong (IMHO) ways
>> forward....
>> Anyway - let's see how it evolves here as there are further troubles
>> with lvmetad & dmeventd - see i.e. here:
>> https://bugzilla.redhat.com/show_bug.cgi?id=1339210
> I'll follow it ;)
>> One more, somewhat related thing: when thin pool goes full, is a good
>> thing to remount an ext3/4 in readonly mode (error=remount-ro). But
>> what to do with XFS which, AFAIK, does not support a similar
>> readonly-on-error policy?
>> It is my understanding that upstream XFS has some improvements to
>> auto-shutdown in case of write errors. Did these improvements already
>> tickle to production kernels (eg: RHEL6 and 7)?
> Any thoughts/suggestions on that?

Surely they are pushed ASAP when tests passes  (upstream first policy here 
fully applies)

So yes  6.8 has surely improvements.



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