[TriLUG] can't unmount nfs exported fs
Joseph Mack NA3T
jmack at wm7d.net
Fri Jun 22 18:57:50 EDT 2007
I have an external usb disk which I use as backup. I mount
it under /backup on the local machine. No problems, can
rw and umount it (`umount /backup`) when I'm done.
It's useful to use the same external usb disk to backup
other machines. I then export (nfs) /backup to another
machine and mount it there (say as
/name_of_local_machine/backup) and write to it. When I'm
done I umount it on the remote machine (it's gone, looking
with `mount` and `df`). Fine so far.
Now I want to `umount /backup` as on the local machine as
before so I can unplug the usb drive. However now I can't
umount it on the local machine (device is busy). `lsof |
grep backup` on the local machine doesn't show anything
My solution so far has been to reboot the local machine.
This is getting to be a pain.
Is this supposed to happen (surely not)? Do I have a hosed
system? Any cures, suggestions where to look?
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
generator at http://www.wm7d.net/azproj.shtml
Homepage http://www.austintek.com/ It's GNU/Linux!
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