topic Automount problems in Operating System - HP-UX

Automount problems

dictum9 — Thu, 25 Oct 2007 16:10:27 GMT

Having issues with automount on 11.23.
When I go to the directory, I get nothing in it.
It's a single map file that I am having issues with.
When I restart all the /sbin/init.d NFS daemons, I get this with the nfs.client daemon, what does it mean?

/sbin/init.d#: ./nfs.client stop
umountall: umount : has failed.
umountall: diagnostics from umount
nfs umount: nfs_unmount: /sapmnt/ASP/global: is busy
umount: return error 1.
umountall: umount : has failed.
umountall: diagnostics from umount
umount: cannot unmount /sapmnt/JPD/profile : Block device required
umount: return error 1.
umountall: umount : has failed.
umountall: diagnostics from umount
umount: cannot unmount /sapmnt/JPD/global : Block device required
umount: return error 1.
umountall: umount : has failed.
umountall: diagnostics from umount
nfs umount: nfs_unmount: /sapmnt/ASP/global: is busy
umount: return error 1.
killing biod
killing automountd

Re: Automount problems

Uday_S_Ankolekar — Thu, 25 Oct 2007 16:20:00 GMT

Try with fuser -cu /sapmnt and see which process is holding that mountpoint

The filesystem looks like is busy with one of SAP process

-USA..

Re: Automount problems

dictum9 — Thu, 25 Oct 2007 16:25:41 GMT

I already did and that went nowhere:

/sbin/init.d#: fuser -cu /sapmnt/JPD/global
/sapmnt/JPD/global: fuser: could not find file system mounted at /sapmnt/JPD/global.

Re: Automount problems

dictum9 — Thu, 25 Oct 2007 16:26:44 GMT

This "Block device required" error is weird, I've never seen it before, and it's not a result of something using it.

Re: Automount problems

Tim Nelson — Thu, 25 Oct 2007 16:39:16 GMT

cat /etc/mnttab to see if the kernel still thinks it is mounted. Every time I have seen a block device required is because the system still thinks the mount is there when it is not.

Re: Automount problems

Uday_S_Ankolekar — Thu, 25 Oct 2007 17:31:51 GMT

You may have to clean the File system try fsck on them before umount.

You might have tried fuser -k (to kill)

-USA..

Re: Automount problems

dictum9 — Fri, 26 Oct 2007 08:41:38 GMT

Yes, the filesystems are still in the /etc/mnttab.
What can I do to make them available?
Do I have to reboot the machine?

#: grep JPD /var/tmp/mnttab.out
sapjpd_map /sapmnt/JPD/global autofs ignore,direct,dev=6000008b 0 0 1192565363
sapjpd_map /sapmnt/JPD/profile autofs ignore,direct,dev=6000008c 0 0 1192565363
/dev/vgsap/lvol1 /sapmnt/JPD vxfs ioerror=mwdisable,largefiles,delaylog,nodatainlog,dev=40010001 0 0 1192565479
/dev/vgsap/lvol2 /usr/sap/JPD vxfs ioerror=mwdisable,largefiles,delaylog,nodatainlog,dev=40010002 0 0 1192565479

Re: Automount problems

Tim Nelson — Fri, 26 Oct 2007 08:52:26 GMT

I think a reboot is going to be your last resort, at least for the one that will not let you mount it.

As far as the mounted busy ones you can still try lsof or fuser -u hostname:/mount/point to see if you can ID the process that is still in the filesystem.

I thought I saw in 11iv3 that there is a umount -f option to forcibly unmount a ghost NFS filesystem but alas we are not there yet.

Re: Automount problems

Dave Olker — Fri, 26 Oct 2007 09:17:23 GMT

Hi all,

First of all, forcible unmount is available in 11.23 and 11.31 so you don't need to move to 11.31 to get that.

Secondly, I'm still not clear what you're trying to do. Are you wanting to remove the autofs mount points from the system or actually use AutoFS?

The /etc/mnttab entries you posted:

_________________________

# grep JPD /var/tmp/mnttab.out
sapjpd_map /sapmnt/JPD/global autofs ignore,direct,dev=6000008b 0 0 1192565363
sapjpd_map /sapmnt/JPD/profile autofs ignore,direct,dev=6000008c 0 0 1192565363
/dev/vgsap/lvol1 /sapmnt/JPD vxfs ioerror=mwdisable,largefiles,delaylog,nodatainlog,dev=40010001 0 0 1192565479
/dev/vgsap/lvol2 /usr/sap/JPD vxfs ioerror=mwdisable,largefiles,delaylog,nodatainlog,dev=40010002 0 0 1192565479
_________________________

are either AutoFS or VxFS. Are you trying to use AutoFS to perform loopback mounts to the same system? Or are these local VxFS SAP filesystems unrelated to the AutoFS ones? If you want to remove the AutoFS mount entries from the /etc/mnttab file you should be able to by issuing the command "umountall -F autofs". Does that remove the AutoFS entries?

Regards,

Dave

Re: Automount problems

dictum9 — Fri, 26 Oct 2007 09:58:32 GMT

The problem is that the automounted directories are not available. Everything else is available via the automount.
The automount server is exporting the filesystems.

#: l /sapmnt/JPD/global
total 0

#: l /sapmnt/JPD/profile
total 0

Re: Automount problems

Dave Olker — Fri, 26 Oct 2007 10:06:08 GMT

Has this ever worked or is this a new installation? If it used to work, when did it stop working? What changed?

If you want to troubleshoot the problem I'd want to see a copy of all your AutoFS maps, your entire /etc/mnttab file, and I'd want you to collect a debug logfile from automountd.

Re: Automount problems

dictum9 — Fri, 26 Oct 2007 10:58:28 GMT

Automount has worked on this box, but this particular directory in the map file is problematic. I copied the map file from a pre-existing one and something is wrong.

I configure the map files and then restart the /sbin/init.d/*nfs* daemons. In this case, one of the daemons cannot get restarted - that looks to be the source of the problem.

Re: Automount problems

dictum9 — Fri, 26 Oct 2007 11:02:28 GMT

I will try:

umountall -F autofs

Re: Automount problems

dictum9 — Mon, 29 Oct 2007 15:10:40 GMT

umountall does not work either, what can I do?

/sbin/init.d#: umountall -F autofs
umountall: umount : has failed.
umountall: diagnostics from umount
umount: cannot unmount /sapmnt/JPD/profile : Block device required
umount: return error 1.
umountall: umount : has failed.
umountall: diagnostics from umount
umount: cannot unmount /sapmnt/JPD/global : Block device required
umount: return error 1.

Re: Automount problems

Dave Olker — Mon, 29 Oct 2007 15:29:47 GMT

Is automountd running when you're trying to remove the AutoFS placeholders? What happens when you issue the command:

# /sbin/init.d/nfs.client start

Do you see any error messages? Can you then use the "umountall -F autofs" command?

Re: Automount problems

dictum9 — Mon, 29 Oct 2007 16:01:06 GMT

Still doesn't work.
Does it need a reboot?

/sbin/init.d#: /sbin/init.d/nfs.client start
starting NFS CLIENT networking

starting up the rpcbind
rpcbind already started, using pid: 15020
starting up the BIO daemons
/usr/sbin/biod 16
Reading in /etc/exports
starting up the Status Monitor daemon
rpc.statd already started, using pid: 15050
starting up the Lock Manager daemon
rpc.lockd already started, using pid: 15068
Starting up the AutoFS daemon
/usr/sbin/automountd
Running the AutoFS command interface
/usr/sbin/automount
mounting remote NFS file systems ...
mounting CacheFS file systems ...

/sbin/init.d#: umountall -F autofs
umountall: umount : has failed.
umountall: diagnostics from umount
umount: cannot unmount /sapmnt/JPD/profile : Block device required
umount: return error 1.
umountall: umount : has failed.
umountall: diagnostics from umount
umount: cannot unmount /sapmnt/JPD/global : Block device required
umount: return error 1.

Re: Automount problems

Dave Olker — Mon, 29 Oct 2007 16:03:53 GMT

Looks that way.

Re: Automount problems

dictum9 — Mon, 29 Oct 2007 16:43:22 GMT

After the reboot, I get this.
all the map files look good.

/sbin/init.d#: automount -v
automount: /sapmnt/JPD/global mounted
automount: /sapmnt/JPD/profile mounted
automount: no unmounts

/sbin/init.d#: ll /sapmnt/JPD/profile
/sapmnt/JPD/profile unreadable

Re: Automount problems

Dave Olker — Mon, 29 Oct 2007 16:47:01 GMT

Does the NFS mount succeed when you do the "ll" command? What does /etc/mnttab say? Is the filesystem mounted from the server you expect?

Re: Automount problems

dictum9 — Tue, 30 Oct 2007 09:00:58 GMT

I don't think that NFS is successful, all I get is "Unavailable" when I do ls on the directory.
What does it mean?

The two directories involved are:

/sapmnt/JPD/global and
/sapmnt/JPD/profile

/sbin/init.d#: grep JPD /etc/mnttab
sapjpd_map /sapmnt/JPD/global autofs ignore,direct,dev=60000009 0 0 1193694051
sapjpd_map /sapmnt/JPD/profile autofs ignore,direct,dev=6000000a 0 0 1193694051