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Re: XFS dying when many processes copy many files/directories

To: Adrian Head <ahead@xxxxxxxxxxxxxx>
Subject: Re: XFS dying when many processes copy many files/directories
From: Simon Matter <simon.matter@xxxxxxxxxxxxxxxx>
Date: Wed, 02 Jan 2002 08:50:20 +0100
>received: from mobile.sauter-bc.com (unknown [10.1.6.21]) by basel1.sauter-bc.com (Postfix) with ESMTP id A4B4B57306; Wed, 2 Jan 2002 08:50:35 +0100 (CET)
Cc: linux-xfs@xxxxxxxxxxx
Organization: Sauter AG, Basel
References: <200112170121.fBH1Lio02958@oss.sgi.com>
Sender: owner-linux-xfs@xxxxxxxxxxx
Hello Adrian

Maybe you remember that I experienced the same problem (system hang)
when running several cp processes simultaneously.
The difference was that I was able to hang the system with different
filesystems (even with good old ext2). I gave up on this but now I woke
up and will try again tonight. IIRC I was trying last with the 2.4.9-12
rpm of RH7.1-XFS and did not have this problem again.

Simon

Adrian Head schrieb:
> 
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> I am again in the process of building a couple of file servers for various
> purposes over the last week and thought that I'd have another serious look at
> using XFS on the new file servers.
> 
> Base system is Redhat 7.1 with a custom kernel - 2.4.16+xfs.
> 
> My standard process before putting servers into production is to run a few
> tests to make sure that I can trust the hardware/software combination.  One
> of my standard tests is to simulate many users simultaniously copying many
> files across the filesystem.  The volume is a software raid5 over 4 IDE
> drives.
> 
> It is during this test that the machine hangs after getting almost 95%
> complete.  I have tried running this test using XFS, ext2, ext3, reiserfs and
> only XFS fails to complete.  This situation is completely reproducable every
> time I have run this test to date.
> 
> I'm at a loss as to what to do next to troubleshoot this problem or even what
> info people need.
> 
> Attached is some info:
> 
> - --
> Adrian Head
> 
> (Public Key available on request.)



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