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From: Zdenek Kabelac <zkabelac@redhat.com>
To: LVM general discussion and development <linux-lvm@redhat.com>,
	Alexander 'Leo' Bergolth <leo@strike.wu.ac.at>
Subject: Re: [linux-lvm] LVM hangs
Date: Mon, 13 Nov 2017 15:51:21 +0100	[thread overview]
Message-ID: <bb7da243-13bd-cb2c-1e83-258a463af38d@redhat.com> (raw)
In-Reply-To: <6cfeccb2-b3f6-dbd0-f5b8-b5e79a25baf8@strike.wu.ac.at>

Dne 13.11.2017 v 14:41 Alexander 'Leo' Bergolth napsal(a):
> Hi!
> 
> I have a EL7 desktop box with two sata harddisks and two ssds in a
> LVM raid1 - thin pool - cache configuration. (Just migrated to this
> setup a few weeks ago.)
> 
> After some days, individual processes start to block in disk wait.
> I don't know if the problem resides in the cache-, thin- or raid1-layer
> but the underlying block-devices are fully responsive.
> 
> I have prepared some info at:
>    http://leo.kloburg.at/tmp/lvm-blocks/
> 
> Do the stack backtraces provide enough information to locate the source
> of the blocks?
> 
> I'd be happy to provide additional info, if necessary.
> Meanwhile I'll disable the LVM cache layer to eliminate this potential
> candidate.
> 

Hi


It would be probably nice to see the result of 'dmsetup status'

I'd have guessed you are probably hitting  'frozen' raid state
which is unfortunate existing upstream bug.


Regards


Zdenek

  reply	other threads:[~2017-11-13 14:51 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-13 13:41 [linux-lvm] LVM hangs Alexander 'Leo' Bergolth
2017-11-13 14:51 ` Zdenek Kabelac [this message]
2017-11-13 15:12   ` Alexander 'Leo' Bergolth
2017-11-13 15:20     ` Zdenek Kabelac
2017-11-13 17:41       ` Gionatan Danti
2017-11-13 21:56         ` Zdenek Kabelac
2017-11-16 11:02   ` Alexander 'Leo' Bergolth
2017-11-16 11:47     ` Zdenek Kabelac
2017-11-16 14:16       ` Alexander 'Leo' Bergolth

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