umount says "Device busy" , lsof says nobody is accessing...

From: Fliguer, Miguel <M_Fliguer_at_miniphone.com.ar>
Date: Mon, 13 Jul 1998 11:30:13 -0300

Greetings !

We have a fileset (clone) from a domain (clone_domain), which is
mounted via fstab on the mount point /clone.

All of a sudden, we can't umount this fileset. It keeps saying
"Device Busy". Of course, we tried lsof to find who was accessing
the mount point :

# df | grep clone
clone_domain#clone 35538352 2848
35507664 1% /clone
#
# cd /clone
# lsof | grep clone
ksh 10782 root cwd R VDIR 4012, 165132 8192 2
/clone
grep 10894 root cwd R VDIR 4012, 165132 8192 2
/clone
lsof 10952 root cwd R VDIR 4012, 165132 8192 2
/clone
#
# cd /
# lsof | grep clone
#
# umount /clone
/clone: Device busy
#

No process is accessing the mount point, but still we are unable to
umount.
Hints ?

DU 4.0B, AS8400, HSZ50

Thanks in advance,
---
Miguel Fliguer
Miniphone S.A. - Buenos Aires, Argentina
m_fliguer_at_miniphone.com.ar
Received on Mon Jul 13 1998 - 16:27:57 NZST

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