Date: Fri, 03 Oct 2003 10:10:20 -0700 From: Lars Eggert <larse@ISI.EDU> To: Kris Kennaway <kris@obsecurity.org> Cc: current@FreeBSD.org Subject: Re: NFS corruption on p4 machines (please test) Message-ID: <3F7DAD7C.2040505@isi.edu> In-Reply-To: <20031003054326.GA51359@rot13.obsecurity.org> References: <20031003054326.GA51359@rot13.obsecurity.org>
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This is a cryptographically signed message in MIME format. --------------ms050704080404070001090307 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Kris, Kris Kennaway wrote: > For some months now I have been experiencing NFS corruption on the > three machines in the dosirak.kr package cluster - these are SMP > pentium 4 machines that run -CURRENT. Setting DISABLE_PSE and > DISABLE_PG_G does not fix these problems. I am able to easily > reproduce these problems using /usr/src/tools/regression/fsx on a > loopback nfs mount - they are not deterministic, but it blows up > within about 8000 operations (less than a minute of operation). In > fact sometimes it even manages to make fsx segfault, which is fairly > impressive :) > > Just mount something rw via loopback nfs, and run 'fsx foo' on the nfs > filesystem for a few minutes. I just ran an fsx cycle on my desktop machine over a TCP mount, and it seemed to work fine: [root@nik: /usr/src/tools/regression/fsx] ./fsx /tmp/nfs/x truncating to largest ever: 0x13e76 truncating to largest ever: 0x2e52c truncating to largest ever: 0x3c2c2 truncating to largest ever: 0x3f15f truncating to largest ever: 0x3fcb9 truncating to largest ever: 0x3fe96 truncating to largest ever: 0x3ff9d truncating to largest ever: 0x3ffff skipping zero size read skipping zero size write skipping zero size write ^Csignal 2 testcalls = 166863 Lars -- Lars Eggert <larse@isi.edu> USC Information Sciences Institute --------------ms050704080404070001090307 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIJtjCC 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