On Tue, Aug 24, 2010 at 04:10:58PM -0700, Harry Edmon wrote:
> J. Bruce Fields wrote:
> >On Tue, Aug 24, 2010 at 10:56:34AM -0700, Harry Edmon wrote:
> >>I am having a problem getting odd ESTALE (Stale NFS file handle)
> >>errors. The server and client are both amd64 architecture. I am
> >>runnning a simple csh script on the client with the following:
> >>
> >>if (! -e /home/disk/data/gempak/upperair/latest ) then
> >> mkdir /home/disk/data/gempak/upperair/latest
> >>endif
> >>
> >>The script randomly comes back with:
> >>
> >> mkdir: cannot create directory
> >>`/home/disk/data/gempak/model/latest': File exists
> >
> >Why is it "model" here and "upperair" in the above?
> OOPS. The actual script has both, and I have had failure on both.
> I was trying to simplify my report, and ended up mixed the two. So
> change above the script to:
>
> if (! -e /home/disk/data/gempak/model/latest ) then
> mkdir /home/disk/data/gempak/model/latest
> endif
Got it, thanks.
> >>When I do an strace I am seeing the following when it fails:
> >>
> >>20745 stat("/home/disk/data/gempak/model/latest", 0x7fff56ed9580) = -1 ESTALE (Stale NFS file handle)
> >>
> >>...
> >>
> >>20751 mkdir("/home/disk/data/gempak/model/latest", 0777) = -1 EEXIST (File exists)
> >
> >Could you give a more complete description of the code that's running?
> >(For example: how is "latest" being removed, and how do you know that
> >"latest" isn't created after checking whether it exists but before the
> >mkdir?)
> >
> >--b
> Actually, the directory never gets removed. This code is in the
> script just as a emergency check in case it is moved to a different
> disk and the directory structure has not yet been created. So it
> should never get to the "mkdir", in fact the directory has entries
> that date from 2007. I have other files that never change in other
> scripts that I am seeing the "ESTALE" error when "stat" is run on
> them, so it is a more universal problem on this client/server setup
> than just this example.
What filesystem are you exporting? (ext3, xfs, ?)
And what do your exports look like?
--b.
> >>The kernel version of the client does not matter (I have tried
> >>2.6.34.5 and 2.6.35.3). But the server kernel does matter. It
> >>occurs with 2.6.35 and 2.6.35.3. It does not with 2.6.34.5.
> >>
> >>The ESTALE only occurs with "stat" and "lstat" in the scripts I have tried. Attached is my configuration file from the server. The mount on the client is:
> >>
> >>imist2:/home/data on /home/disk/data type nfs (rw,noatime,intr,proto=tcp,addr=192.168.1.12)
> >>
> >>
> >>Any ideas?
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