Re: Many open/close on same files yeilds "No such file or directory".

From: Jesper Krogh
Date: Fri May 02 2008 - 04:20:57 EST


Andrew Morton wrote:
I cannot reproduce it on other disks attached to the same server or on
other servers attached to similar disksystems.

hmm.

I guess it would be interesting to remount that filesystem with `noatime'
to eliminate the last bit of I/O and block-=realted code.

It is allready mounted noatime:
/dev/mapper/fx1200_vg-fx1200_lv on /z/fx1200 type ext3 (rw,noatime)

I'm about to mkfs.ext3 the volume and spool it back in from the backup,
but somehow I'm not convinced that it will solve the problem at all.
It may just be a hardware problem, but dmesg doesnt tell anything.

We actually got the problem from a perl-script, but this seems to be the
minimal program that reproduces the problem.

I'd suspect that after 1e8 loops your CPU got too hot and started to
misbehave.

Hardware is an Sun Fire X4600 (8xdual-core AMD64 processors). The
problem seem to be tied to this filesystem. (I cannot havent been able
to reproduce it on the /-mounted disk of the same system. So if a cpu
problem.. then it shouldn't be tied to a specific filesystem?

This is the only activity on the system .. so a load of 1 / 16cpus.

The system are generally rock-solid.

Jesper
--
Jesper
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