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Re: XFS write cache flush policy

To: Michael Monnerie <michael.monnerie@xxxxxxxxxxxxxxxxxxx>
Subject: Re: XFS write cache flush policy
From: Matthias Schniedermeyer <ms@xxxxxxx>
Date: Sat, 8 Dec 2012 20:53:04 +0100
Cc: xfs@xxxxxxxxxxx, Lin Li <sdeber@xxxxxxxxx>
In-reply-to: <5955806.tSHc7WOiJd@saturn>
References: <CAA_rkDfFUmZzT_kMznsTSNVxdfqfmz=bmJ400wdBOzocgP32eA@xxxxxxxxxxxxxx> <20121208192927.GA17875@xxxxxxx> <5955806.tSHc7WOiJd@saturn>
User-agent: Mutt/1.5.21 (2010-09-15)
On 08.12.2012 20:40, Michael Monnerie wrote:
> Am Samstag, 8. Dezember 2012, 20:29:27 schrieb Matthias Schniedermeyer:
> > I have the same problem, several times.
> I'd like to chime in here, with a similar issue: I have Linux on my 
> desktop, xfs is the home partition, 16G RAM. One day my system froze, no 
> chance to do a buffer flush via SYS-S/U/B, I had to press the reset 
> button (no power off, just reset). Upon restart, *lots* of files were 
> gone, destroyed, etc, and my KDE desktop wouldn't work anymore. Luckily 
> I have backups, and could restore - but this just shouldn't happen, and 
> it was *much* better with older kernels. What is the problem that 
> metadata isn't written to disk occasionally? I was on 3.6.6 when that 
> happened, now on 3.6.8, so very recent.

Now that you say it, this is what happend one of the other times, 
luckily i had done a backup just before i rebooted, so after 
xfs_repair'ing the partition (the only time i had to repair something 
for as long as i'm using XFS) i had to restore my home-directory from 
backup to get my desktop in a usable state again.



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