Re: Stale NFS file handle - persistent error

["J. Bruce Fields" <bfields@fieldses.org>]

On Wed, Aug 29, 2012 at 03:06:07PM +0200, Carlos Jiménez wrote:
> I have a computer acting as an NFS Server running a Debian based
> distro

Could you be more specific?  What kernel version exactly, and what
filesystem are you exporting, and what are the export options?

What version of NFS are you using?

> and several hosts running CentOS 6.2 acting as NFS clients
> (for a virtualization environment). Every time more often "Stale NFS
> file handle" errors appear when trying to copy a file from one
> directory to another (both in the nfs shared directory).

I assume you're not doing anything else with either file or directory at
the same time?  (E.g., not deleting or renaming the file while it's
being copied?)

--b.

> In the server side there are no related information in the logs, but
> this is the output of one of the nfs clients:
> 
> Wed Aug 29 11:52:57 2012 [TM][E]: clone: Command "cd
> /var/lib/one/datastores/0/32; cp -r
> ../../1/5c0455eb494fd43b5c7c576e0c642fbe
> /var/lib/one/datastores/0/32/disk.0" failed: cp: reading
> `../../1/5c0455eb494fd43b5c7c576e0c642fbe': Stale NFS file handle
> 
> I've checked that path and filenames are correct. The file itself is
> a 300MG sized and the error appears aprox. 30 minutes after the
> start of the copy, so I guess that it doesn't finish the file copy.
> I usually tried unmounting and remounting the shared directory. In
> fact, initially it was enough and it was possible to fully copy the
> file (after aprox. 30 minutes), moreover because the error took
> place from time to time. But now, the problem persists after doing
> it (even after rebooting the clients).
> Additionally, I've tried doing the same operation (to copy the same
> file from a directory to another) locally in the NFS Server and it
> takes just a minute (aprox.).
> 
> Could you give me advice on troubleshooting it?
> 
> 
> Thanks in advance.
> 
> Carlos.
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