On Wed, Sep 13, 2006 at 07:10:27PM -0500, Doug Carter wrote:
> On Sep 12, 2006, at 3:49 AM, Joachim Schipper wrote:
> >On Mon, Sep 11, 2006 at 06:08:22PM -0500, Doug Carter wrote:
> >>I really doubt that this is a system problem; I just can't figure out
> >>what stupid thing I have done.
> >>
> >>Using: OpenBSD 3.9 (GENERIC) #617: Thu Mar 2 02:26:48 MST 2006 on a
> >>Dell 1850, RAID 1 (rest of dmesg below).
> >>
> >>One entry every day:
> >> Sep 10 02:16:58 tma0 /bsd: nfs server amd:16867: not responding
> >>
> >>As far as I know I don't have NFS running...
> >>
> >>I've ignored this for a while today I noticed about 100 instances of
> >>sh, /etc/security, mail & find with the latter in state 'nfsrcv'
> >>This appeared to lead to too many files open and hung the impad
> >>(Dovecot). Killing the find, sh & mail processes and restarting
> >>Dovecot; all appears OK now...
> >>
> >>Also, I notice that I can issue a sudo find / -name anything and it
> >>will hang in state 'nfsrcv'
> >
> >Are you really sure you did not mess with NFS at some point (maybe via
> >an automounter)? You might even want to reboot, as this will at least
> >clear any mount-ish confusion in the system.
> >
> >If this message is logged at the same time every day, tcpdump(8) might
> >at least confirm that the box is, indeed, trying to do NFS.
> >Ideally, it could also give at least a little insight into what it's
> >trying to do.
> >
> >Finally, try showmount(8) and nfsstat(8) - they might help point you
> >to the problem.
>
> No resolution yet but I have found a file or device in the root
> directory named "list" that acts rather oddly.
>
> It shows up with ls / but ls -l / hangs with the same nfsrcv
> state. I can't tell if it is a file, directory or device. rm -rf
> list and umount -f list both hang with the (sic) usual 'nfsrcv' state.
>
> Any suggestions short of a restart?
To the best of my knowledge, this is pretty much what you'd see if /list
were a NFS mount to a server that was unreachable, and not mounted
with either 'soft' or 'interruptible'.
I'm not really a NFS guy, but I don't recall any way to get rid of such
a mount without a restart or getting the NFS server back. The latter
case may or may not be possible to simulate using nfsd and pf...
Joachim
