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Re: git repo being corrupted?

From
LRLuciano Rocha <luciano@lsd.di.uminho.pt>
Date
Apr 7, 2008, 16:47 UTC
Message-ID
<20080407164738.GA4053@bit.office.eurotux.com>
In-Reply-To
<20080407161525.GA25894@old.davidb.org>
On Mon, Apr 07, 2008 at 09:15:25AM -0700, David Brown wrote:
Show 10 quoted lines
>  On Mon, Apr 07, 2008 at 12:39:21PM +0100, Luciano Rocha wrote:
> 
> >> > You're using XFS. Did you have a power fail in the recent past?
> >> How did you know?
> >
> > XFS doesn't order metadata writes with data writes, so if the power
> > fails, it can find an update in the journal but the data wasn't written.
> > Then it fills the file with zeroes to the new size.
> 
>  This behavior should be a lot better for recent kernels.

To be fair, it hasn't happened to me lately. But I haven't lost power often, so I can't say it's fixed. ;)

>  xfs does even better with write barriers.  But any file change that is more
>  than one write can be corrupted or split by an inopportune powerdown.
Maybe, but I'm still waiting for barrier support through device-mapper.
-- 
lfr
0/0
Previous: David Brown
Message 6 of 6 in “git repo being corrupted?”
  1. Luke DiamandApr 7, 2008
  2. Luciano RochaApr 7, 2008
  3. Luke DiamandApr 7, 2008
  4. Luciano RochaApr 7, 2008
  5. David BrownApr 7, 2008
  6. Luciano RochaApr 7, 2008

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