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Date: Fri, 21 Mar 1997 14:58:49 -0800 (PST)
From: "Jin Guojun[ITG]" <jin@iss-p4.lbl.gov>
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Subject: bin/3055: umount -f does not work
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>Number:         3055
>Category:       bin
>Synopsis:       umount -f does not work
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Mar 21 15:00:01 PST 1997
>Last-Modified:
>Originator:     Jin Guojun[ITG]
>Organization:
>Release:        FreeBSD 2.2-RELEASE i386
>Environment:

	2.2-RELEASE

>Description:

	"umount -f" option does not work. manual page says:
********8
NAME
     umount - unmount file systems

SYNOPSIS
     umount [-fv] special | node
     umount -a [-fv] [-h host] [-t ufs | lfs | external_type]

DESCRIPTION
     The umount command calls the unmount(2) system call to remove a special
     device or the remote node (rhost:path) from the file system tree at the
     point node. If either special or node are not provided, the appropriate
     information is taken from the fstab(5) file.

     The options are as follows:

     -a      All of the file systems described in fstab(5) are unmounted.

     -f      The file system is forcibly unmounted.  Active special devices
             continue to work, but all other files return errors if further
             accesses are attempted.  The root file system cannot be forcibly
             unmounted.
********8

>How-To-Repeat:

mount test-server:/home/src/DPSS  /usr/local/DPSS
cd /usr/local/DPSS
# umount /usr/local/DPSS
umount: /usr/local/DPSS: Device busy
# umount -f /usr/local/DPSS
umount: /usr/local/DPSS: Device busy
# umount -f test-server:/home/src/DPSS
umount: /usr/local/DPSS: Device busy

>Fix:
	
	

>Audit-Trail:
>Unformatted: