topic Re: NFS autoFS won't release mount point in Operating System - HP-UX

NFS autoFS won't release mount point

Gerald Taylor — Wed, 11 May 2005 15:16:11 GMT

We have N-class server runnin HPUX 11.11 There are several system's for which we use autoFS to access NFS shared directories. The wierd thing is on HPUX 11.00 systems when we access the mount point it shows up in "bdf" but then disappears after some time. On two of our 11.11 they never go away. I tried to find if there was a process still using a file or something of that sort but it appears there is not. There is no output from:

fuser -cu /net/server/mountpoint
or
fuser -u servername:mountpoint

No output for both commands. Any ideas?

Re: NFS autoFS won't release mount point

Alex Lavrov. — Wed, 11 May 2005 15:44:40 GMT

What about "lsof /path/to/filesystem" ?

If you try to unmount it, so you get any messages?

Re: NFS autoFS won't release mount point

Gerald Taylor — Wed, 11 May 2005 15:46:46 GMT

Tried lsof also I get no output.

Re: NFS autoFS won't release mount point

Alex Lavrov. — Wed, 11 May 2005 15:58:34 GMT

What about umount?

Re: NFS autoFS won't release mount point

Gerald Taylor — Wed, 11 May 2005 16:04:38 GMT

umount actually does umount the filesystem. Shouldn't the autoFS perform this for me?

Gerald

Re: NFS autoFS won't release mount point

Alex Lavrov. — Wed, 11 May 2005 16:08:32 GMT

If you can unmount withour problems, it means that noone uses it, so it's probably misconfiguration of autoFS

can you post here the conf files? (/etc/auto_master, direct etc)

Re: NFS autoFS won't release mount point

Steven E. Protter — Wed, 11 May 2005 16:18:12 GMT

Your command output shows no processes open.

what does nfsstat show?

I agree with Alex. If you can umount there isn't a process with a filehandle on the filesystem.

SEP

Re: NFS autoFS won't release mount point

Rick Garland — Wed, 11 May 2005 16:29:21 GMT

You have a misconfiguration of the map file(s) for autoFS.

Re: NFS autoFS won't release mount point

Gerald Taylor — Thu, 12 May 2005 09:09:35 GMT

the /etc/auto_master

/net -hosts -nosuid,soft

It only has the the above line.

nfsstat -m shows all the mounts that are shown with the "bdf" command. Attached is a nfsstat command results.

Re: NFS autoFS won't release mount point

Pete Randall — Thu, 12 May 2005 09:26:46 GMT

Gerald,

What's your patch level?

# swlist |grep -i nfs
PHNE_29883 1.0 ONC/NFS General Release/Performance Patch

This is one from one of my 11.11 systems running autoFS that is not showing the symptoms you describe.

Pete

Re: NFS autoFS won't release mount point

Gerald Taylor — Thu, 12 May 2005 09:30:45 GMT

It appears I have several nfs related patches:
# swlist -l product | grep -i nfs
NFS B.11.11 ONC/NFS; Network-File System,Information Services,Utilities
PHKL_25238 1.0 11.00 NFS nfsd deadlock
PHKL_25993 1.0 thread nostop for NFS, rlimit, Ufalloc fix
PHKL_27266 1.0 iCOD,RTSCHED,(u)mount,final close,NFS umount
PHKL_28185 1.0 Tunable;vxportal;vx_maxlink;DMAPI NFS hang
PHKL_29335 1.0 vx_nospace on NFS write.
PHNE_29783 1.0 ONC/NFS General Release/Performance Patch