From: Michael Monnerie <michael.monnerie@is.it-management.at>
Organization: it-management http://it-management.at
To: xfs@oss.sgi.com
Subject: Re: xfs_repair of critical volume
Date: Fri, 12 Nov 2010 14:22:28 +0100
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Cc: Eli Morris <ermorris@ucsc.edu>
References: <75C248E3-2C99-426E-AE7D-9EC543726796@ucsc.edu> <4CCD3CE6.8060407@hardwarefreak.com> <864DA9C9-B4A4-4B6B-A901-A457E2B9F5A5@ucsc.edu>
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On Freitag, 12. November 2010 Eli Morris wrote:
> The filesystem must be pointing to files that don't exist, or
> something like that. Is there a way to fix that, to say, remove
> files that don't exist anymore, sort of command? I thought that
> xfs_repair would do that, but apparently not in this case.

The filesystem is not optimized for "I replace part of the disk contents=20
with zeroes" and find that errors. You will have to look in each file if=20
it's contents are still valid, or maybe bogus.

I find the robustness of XFS amazing: You overwrote 1/5th of the disk=20
with zeroes, and it still works :-)

Now that you are in this state, I'd recommend you
a) make a *real* *tape* *backup*
You learned it the hard way: a disk copy is no backup, at least I hope=20
you learned that lesson
b) Maybe also copy all your files to another system, or you trust your=20
backup from a) very much
c) reinitialize the full array. Really recreate every array, 2 b sure=20
all your RAIDs work this time.
d) copy your data backup - either from the other copy of b), or from the=20
tape backup in a)

Then you will see a correct view of disk space used and which files are=20
still there. Now you must check every files content, some will have=20
bogus content.

=2D-=20
mit freundlichen Gr=FCssen,
Michael Monnerie, Ing. BSc

it-management Internet Services: Prot=E9ger
http://proteger.at [gesprochen: Prot-e-schee]
Tel: +43 660 / 415 6531

// ****** Radiointerview zum Thema Spam ******
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