FC 8 & 9: instable file system
Ralf W. Grosse-Kunstleve
rwgk at yahoo.com
Wed Jul 9 18:01:38 UTC 2008
Randomly, files appear to be missing, leading to application failures. When immediately trying again
the exact same command it (usually) works.
We see this behavior on three systems:
Fedora 8: 188.8.131.52-10.fc8 #1 SMP Thu May 22 22:58:37 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux
Fedora 8: 184.108.40.206-27.fc8 #1 SMP Fri Jun 13 16:17:54 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux
Fedora 9: 220.127.116.11-76.fc9.x86_64 #1 SMP Fri Jun 27 15:58:30 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux
We have other Fedora 8 systems with older kernels that are completely stable, e.g.:
18.104.22.168-137.fc8 #1 SMP Sun Feb 10 17:03:13 EST 2008 x86_64 x86_64 x86_64 GNU/Linux
We had intermittently missing files on both local disks (ext3) and over NFS, with mounts form various
hosts including a Netapp filer that's serving 30+ other machines without a problem.
My best way of demonstrating the problem is to repeatedly run SCons (which is a make replacement) on
a large source tree with several thousand files. This performs a full dependency analysis and should
just find that everything is already up-to-date. About 10% of the SCons runs fail with "missing" file
warnings, or spurious recompilation, presumably because header files are intermittently missing, which
changes the source signatures.
I already asked the SCons people, the hardware vendor, 3ware support, and I ran yum update a few times
in hopes that the problem goes way. So far it has been persistent.
Has anybody on this list seen similar problems?
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