On Thu, 4 May 2006, Mike Marion wrote: > Seeing some of our hosts in only one site having problems with hangs > occurring. Seems to be to same filer and even same paths, but what I > see is odd. The kernel rpciod thread is even stuck in state D, > seemingly because the umount call is.
I think that might be the other way around. > > i.e. > root 20302 1.2 0.0 2468 584 ? D 12:01 2:39 > /bin/umount //usr/local/projects/dsp/qdsp6 > > root 6270 0.0 0.0 0 0 ? D Apr28 3:17 [rpciod] > > unfortunately, once this happens, any new mounts will fail. Can't even > stat the path above via df. Basically the whole NFS layer is stuck. Tell us what the maps look like. > > Using autofs-4.1.4 with > autofs-4.1.4-misc-fixes.patch > autofs-4.1.4-multi-parse-fix.patch > autofs-4.1.4-non-replicated-ping.patch > patches (slight possibility one of the above is missing, but I'm pretty > damn sure they're in there). > > Mounts are TCP based so I can't even use a spoofed interface to force a > umount. > > Wondering why the extra / in the path on the umount call as well. Also > wondering if there's something in the filer (netapp) wrong that's giving > some kind of response to the umount that's tickling a bug there. Not > much I've found online yet though. The extra "/" will be a bug but it gets ignored by the kernel in this case. > > Oh, and umount call shows socks in fd list that don't appear to exist > anymore: > :~# ls -l /proc/20302/fd > total 3 > dr-x------ 2 root root 0 May 4 15:26 . > dr-xr-xr-x 3 root root 0 May 4 12:01 .. > lrwx------ 1 root root 64 May 4 15:26 0 -> /dev/null > l-wx------ 1 root root 64 May 4 15:26 1 -> pipe:[4528730] > l-wx------ 1 root root 64 May 4 15:26 2 -> pipe:[4528730] > :~ # socklist | grep 4528730 > :~ # > > Problem happens on hosts using same autofs daemons with or without > direct maps enabled. Not really sure if it's technically an autofs > issue (unless there's a glitch in how it's calling umount and it's > timing there) or an NFS layer issue. > > SLES9-SP1, kernel 2.6.5-7.147-smp (from suse-9.2 updates) on > x86_64 hosts. > > -- > Mike Marion-Unix SysAdmin/Staff Engineer-http://www.qualcomm.com > Drew Carey: "Look, this is an odd question, but you're kind of cute and you're > pretty nice to me. Are you drunk? It's OK if you are." => Drew Cary Show. > > _______________________________________________ > autofs mailing list > [email protected] > http://linux.kernel.org/mailman/listinfo/autofs > _______________________________________________ autofs mailing list [email protected] http://linux.kernel.org/mailman/listinfo/autofs
