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Re: Metadata CRC error upon unclean unmount

To: Fanael Linithien <fanael4@xxxxxxxxx>
Subject: Re: Metadata CRC error upon unclean unmount
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Thu, 26 Jun 2014 09:52:46 +1000
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <CA+o=1OXeRSs7ZXhnTdNrsuu+ozN0k=KmGa068=HqsMQ13XnRYQ@xxxxxxxxxxxxxx>
References: <CA+o=1OW0OXhzU+b9ACMZzg0dq=B7BSj+yPXD2Vrr9F6mWK8ruQ@xxxxxxxxxxxxxx> <20140624201946.GJ9508@dastard> <CA+o=1OVnORG0Ah3Zx8dkGzs7vtT7odRH=v12KqtLW0MP_3oHjQ@xxxxxxxxxxxxxx> <20140625012144.GK9508@dastard> <CA+o=1OXY8Ay8CSgsdiAOTacBa9800FiMKGbr0DdkE_YVpewqBw@xxxxxxxxxxxxxx> <20140625220336.GN9508@dastard> <CA+o=1OWptqFq87E0ncmYH2T6yEzeGheefE-o_VAm7-E_0Z+NJA@xxxxxxxxxxxxxx> <20140625232222.GS4453@dastard> <CA+o=1OXeRSs7ZXhnTdNrsuu+ozN0k=KmGa068=HqsMQ13XnRYQ@xxxxxxxxxxxxxx>
User-agent: Mutt/1.5.21 (2010-09-15)
On Thu, Jun 26, 2014 at 01:32:56AM +0200, Fanael Linithien wrote:
> 2014-06-26 1:22 GMT+02:00 Dave Chinner <david@xxxxxxxxxxxxx>:
> > The before-mount image shows the CRC error, so it didn't come from
> > log recovery. It may have come from recovery in the previous
> > iteration, - do you still have the pre-mount images from the prior
> > iteration before the crash error was detected?
> 
> I don't have anything from between that log CRC eror and these. Should
> I try again?

It would be aprreciated if you could - I'm trying to reproduce it
here but I'm having no luck. I've been crashing CRC enabled
filesystems for the past 18 months and I can count on one hand the
number of times I've had a CRC error of any time during/after
recovery, so I'm not really surprised that...

Cheers,

Dave
-- 
Dave Chinner
david@xxxxxxxxxxxxx

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