Messages in this thread | | | Date | Sun, 31 Oct 1999 12:53:19 +0100 (MET) | From | (Guest section DW) | Subject | Re: NFS/RPC problems w/ 2.2.12 + a feature suggestion for NFS/remounting |
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From: I Lee Hetherington <ilh@sls.lcs.mit.edu>
I've got umount from mount-2.9u-4_nfsv3_0.3, and umount -f has never worked for me either. With a single shell whose pwd is in the mounted directory, I get the following error:
umount2: Device or resource busy umount: /tmp/mnt: device is busy
Having said that, Red Hat 6.1's shutdown script kills programs using the mount point, and then umounts OK, but umount -f by itself is definitely not enough.
There can be local reasons and remote reasons that the umount fails. The purpose of umount2 is to force the umount in case the remote system is not responding. It will not force anything if the local kernel still uses the mount.
Andries
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