On Mon, 2007-10-29 at 10:01 -0500, Florin Iucha wrote:
> On Mon, Oct 29, 2007 at 09:46:59AM -0400, Trond Myklebust wrote:
> > > What could cause this? I use NFS4 to automount the home directories
> > > from a Solaris10 server, and this box found a few bugs in the NFS4
> > > code (fixed in the 2.6.22 kernel).
> > >
> > > I'll try running with 2.6.23 again for a few days, to see if I get the
> > > pdflush stuck. Any other ideas?
> >
> > One of them appears to be waiting for i/o congestion to clear up. If the
> > filesystem is NFS, then that means that some other thread is busy
> > writing data out to the server. You'll need to look at the rest of the
> > thread dump to figure out which thread is writing the data out, and
> > where it is getting stuck.
>
> Trond,
>
> The full dmesg is at http://iucha.net/2.6.24-rc1/dmesg.stuck_pdflush.gz
>
> Cheers,
> florin
I can't see any evidence of NFS traffic at all in those traces, but
there is a fuse process that is sleeping in :fuse:fuse_dev_read(). Could
that perhaps be relevant.
Trond
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