05-23-2011
Thanks
Ok. So there is no way to exclude a file system from DF output. But is there any way for us to unmount a failed NFS mount without requiring a reboot? Also we have 2 systems where we are facing this issue. umount -f worked on one and gives and error on the second one:
"There was an error with unmount".
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LEARN ABOUT FREEBSD
umount
UMOUNT(8) BSD System Manager's Manual UMOUNT(8)
NAME
umount -- unmount file systems
SYNOPSIS
umount [-fv] special ... | node ... | fsid ...
umount -a | -A [-F fstab] [-fv] [-h host] [-t type]
DESCRIPTION
The umount utility calls the unmount(2) system call to remove a file system from the file system tree. The file system can be specified by
its special device or remote node (rhost:path), the path to the mount point node or by the file system ID fsid as reported by ``mount -v''
when run by root.
The options are as follows:
-a All the file systems described in fstab(5) are unmounted.
-A All the currently mounted file systems except the root are unmounted.
-F fstab
Specify the fstab file to use.
-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. For NFS, a forced dismount can take up to 1 minute or
more to complete against an unresponsive server and may throw away data not yet written to the server for this case.
-h host
Only file systems mounted from the specified host will be unmounted. This option implies the -A option and, unless otherwise speci-
fied with the -t option, will only unmount NFS file systems.
-t type
Is used to indicate the actions should only be taken on file systems of the specified type. More than one type may be specified in a
comma separated list. The list of file system types can be prefixed with ``no'' to specify the file system types for which action
should not be taken. For example, the umount command:
umount -a -t nfs,nullfs
unmounts all file systems of the type NFS and NULLFS that are listed in the fstab(5) file.
-v Verbose, additional information is printed out as each file system is unmounted.
ENVIRONMENT
PATH_FSTAB If the environment variable PATH_FSTAB is set, all operations are performed against the specified file. PATH_FSTAB will not be
honored if the process environment or memory address space is considered ``tainted''. (See issetugid(2) for more information.)
FILES
/etc/fstab file system table
SEE ALSO
unmount(2), fstab(5), autounmountd(8), mount(8)
HISTORY
A umount utility appeared in Version 6 AT&T UNIX.
BSD
November 22, 2014 BSD