[Lustre-discuss] Correct way to unmount a lustre client?

[Dhruv]

lconf  --cleanup --node node_name(client's node) config_file_name.xml
will do the needful.

To unmount the whole luster , the correct sequence would be to cleanup
client, mds and than ost.

Just check with  'ps -ax' after this to ensure

Dhruv

On Jul 9, 1:21 am, Andreas Dilger <adil... at sun.com> wrote:
> On Jul 08, 2008  18:30 +0200, Hans-Juergen Schnitzer wrote:
>
> > what is the correct way to unmount a lustre client
> > when a simple "umount <filesystem>" responds with
> > "device is busy"? A "umount -l <filesystem>" does
> > unmount the filesystem however when I reboot the
> > machine subsequently the shutdown process hangs.
>
> The "umount -l" only removes the filesystem from the namespace, making
> it unreachable.  It doesn't really "unmount" the filesystem at all.
> It is likely that your "filesystem busy" is caused by processes using
> Lustre for CWD or having files open there.  Use "lsof | grep /mount/point"
> to see what processes are using the filesystem.
>
> Cheers, Andreas
> --
> Andreas Dilger
> Sr. Staff Engineer, Lustre Group
> Sun Microsystems of Canada, Inc.
>
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