i am trying to unmount a partition in order to perform a e2fsck on it. however, all attempts give me a "device busy" message. lsof shows this not to be the case, yet still i can't unmount.

any thoughts?

thanks heaps for any hints.

[root@master root]# df /data2
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/RVG/lvol1 1856789608 364820784 1397649416 21% /data2
[root@master root]# cat /etc/fstab |grep data2
/dev/RVG/lvol1 /data2 ext3 defaults 1 2
[root@master root]# lsof |grep data2
[root@master root]# ps -ef |grep data2
root 16912 9461 0 14:51 pts/15 00:00:00 grep data2
[root@master root]# umount /data2
umount: /data2: device is busy
[root@master root]# umount -f /data2
umount2: Device or resource busy
umount: /data2: device is busy
[root@master root]# umount -fv /data2
umount2: Device or resource busy
umount: /data2: device is busy
[root@master root]#

Weird.

You're not currently in that directory are you?

I would try a telinit 1 or telinit 3 and then try to unmount it again.

--Shade

thanks for the quick reply

there are currently many users logged into this system, each performing research operations. i'd rather not interrupt their processes. manpage for telinit suggests issuing a telinit command will interrupt user's processes?

oh, and no, i'm not in the directory.

thanks...

i figured out the problem.

this partition was exported to other machines (ie listed in /etc/exports), and though i unmounted the parition on the remote machines, nfs on the local still held onto the partition, and wouldn't let me unmout it until i shut down nfs services on the local machine.

i thought lsof would tell me is nfs was holding the partition, but apparently it didn't.