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umount(8) [suse man page]

UMOUNT(8)						     Linux Programmer's Manual							 UMOUNT(8)

NAME
umount - unmount file systems SYNOPSIS
umount [-hV] umount -a [-dflnrv] [-t vfstype] [-O options] umount [-dflnrv] {dir|device}... DESCRIPTION
The umount command detaches the file system(s) mentioned from the file hierarchy. A file system is specified by giving the directory where it has been mounted. Giving the special device on which the file system lives may also work, but is obsolete, mainly because it will fail in case this device was mounted on more than one directory. Note that a file system cannot be unmounted when it is `busy' - for example, when there are open files on it, or when some process has its working directory there, or when a swap file on it is in use. The offending process could even be umount itself - it opens libc, and libc in its turn may open for example locale files. A lazy unmount avoids this problem. Options for the umount command: -V Print version and exit. -h Print help message and exit. -v Verbose mode. -n Unmount without writing in /etc/mtab. -r In case unmounting fails, try to remount read-only. -d In case the unmounted device was a loop device, also free this loop device. -i Don't call the /sbin/umount.<filesystem> helper even if it exists. By default /sbin/umount.<filesystem> helper is called if one exists. -a All of the file systems described in /etc/mtab are unmounted. (With umount version 2.7 and later: the proc filesystem is not unmounted.) -t vfstype Indicate that 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 on which no action should be taken. -O options Indicate that the actions should only be taken on file systems with the specified options in /etc/fstab. More than one option type may be specified in a comma separated list. Each option can be prefixed with no to specify options for which no action should be taken. -f Force unmount (in case of an unreachable NFS system). (Requires kernel 2.1.116 or later.) -l Lazy unmount. Detach the filesystem from the filesystem hierarchy now, and cleanup all references to the filesystem as soon as it is not busy anymore. (Requires kernel 2.4.11 or later.) --no-canonicalize Don't canonicalize paths. For more details about this option see the mount(8) man page. THE LOOP DEVICE
The umount command will free the loop device (if any) associated with the mount, in case it finds the option `loop=...' in /etc/mtab, or when the -d option was given. Any pending loop devices can be freed using `losetup -d', see losetup(8). NOTES
The syntax of external umount helpers is: /sbin/umount.<suffix> {dir|device} [-nlfvr] where the <suffix> is filesystem type or a value from "uhelper=" mtab option. The uhelper (unprivileged umount helper) is possible to used when non-root user wants to umount a mountpoint which is not defined in the /etc/fstab file (e.g devices mounted by HAL). FILES
/etc/mtab table of mounted file systems SEE ALSO
umount(2), mount(8), losetup(8). HISTORY
A umount command appeared in Version 6 AT&T UNIX. AVAILABILITY
The umount command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/. Linux 2.0 26 July 1997 UMOUNT(8)

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umount.davfs(8) 						       1.4.6							   umount.davfs(8)

NAME
umount.davfs - Umount-helper to unmount a davfs2 file system SYNOPSIS
umount.davfs [-h | --help] [-V | --version] umount dir SYNOPSIS (root only) umount.davfs dir DESCRIPTION
umount.davfs is a umount helper program. It is called by the umount(8) command. Its purpose is to prevent the umount command from returning unless mount.davfs has synchronized all its cached files with the webdav server. dir is the mountpoint where the WebDAV resource is mounted on. It may be an absolute or relative path. While for local file systems umount(8) will only return when all cached data have been written to disk, this is not automatically true for a mounted davfs2 file system. With this umount helper the user can rely on the familiar behaviour of umount(8). To inform the operating system that the file system uses a network connection, you should always use the _netdev option, when mounting as davfs2 file system. Depending on the amount of data and the quality of the connection, unmounting a davfs2 file system may take some seconds up to some hours. If the mount.davfs daemon encountered serious errors, umount.davfs may return an error instead of unmounting the file system. In this case try umount -i. The -i option will prevent umount(8) from calling umount.davfs. OPTIONS
-V --version Output version. -h --help Print a help message. -f -l -n -r -v This options are ignored. They are only recognized for compatibility with umount(8). FILES
/var/run/mount.davfs PID-files of running umount.davfs processes are looked up here. BUGS
No known bugs. AUTHORS
This man page was written by Werner Baumann <werner.baumann@onlinehome.de>. DAVFS2 HOME http://savannah.nongnu.org/projects/davfs2 SEE ALSO
mount.davfs(8), umount(8), davfs2.conf(5), fstab(5) davfs2 2009-04-13 umount.davfs(8)

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