sshfs/nfs cause server lockup

[Anish Mistry]

On Thursday 07 December 2006 13:36, Chris wrote:
> On 23/11/06, Kris Kennaway <kris at obsecurity.org> wrote:
> > On Thu, Nov 23, 2006 at 04:38:48PM +0100, 
s.c.sprong at student.utwente.nl wrote:
> > > Chris <chrcoluk at gmail.com> wrote:
> > > >kris a development on this, someone else posted about a nfs
> > > > problem and reading his post some starkling point he made
> > > > about network cards, he stated he only gets the bug on sis rl
> > > > and fxp.
> > >
> > > Sorry for the misunderstanding, but I think that the 'NFS via
> > > TCP' thread covers other bugs, ie the inability to mount NFS v3
> > > over TCP.
> > >
> > > I've tested the cards above, and the person I replied to
> > > encountered the same bug with a bge card. My solution was to
> > > remove custom nfs settings in sysctl.conf. I don't know which
> > > one was the culprit because I don't have the time to look into
> > > it further.
> > >
> > > My poking uncovered a set of crashing bugs and potentially a
> > > livelock. I would agree that NFS is very fragile in RELENG_6.
> > > So far <fingers crossed> I've not run into an NFS server
> > > deadlock you described.
> >
> > Are you sure these are NFS problems and not ethernet driver
> > problems?
> >
> > Kris
>
> Had another lockup today, reattached to screen process to see both
> sshfs mounts timed out when running sshfs to remount the terminal
> stopped updating, it didnt disconnect me and an ircd running on the
> server remained functional and the server responded to pings,
> however the terminal was dead and I couldnt login on ssh for a new
> session, a ctrl-alt-del also failed to reboot it and it needed a
> power cycle again.
>
> I have googled researched and read dozens and dozens of nfs bug
> reports where most of them seem to be a problem caused by nfs not
> disconnecting properly leaving itself in a bad state, the fix is
> usually to reboot.  I am having to reboot weekly more often then my
> windows desktop pc, everyone else having no problems with the nfs
> on their linux servers having no problems and its hardly inspiring
> that the stable freebsd is not stable.  All these problems on
> google didnt get fixed no dev attention etc.
>
> So far I have not got my local bsd box up and running yet due to no
> keyboard still need parts for it.
I've updated the sshfs and libs port, you may want to update and see 
if that helps.

-- 
Anish Mistry
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