umount.cifs man page on CentOS

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UMOUNT.CIFS(8)		  System Administration tools		UMOUNT.CIFS(8)

NAME
       umount.cifs - for normal, non-root users, to unmount their own Common
       Internet File System (CIFS) mounts

SYNOPSIS
       umount.cifs {mount-point} [-nVvhfle]

DESCRIPTION
       This tool is part of the samba(7) suite.

       umount.cifs unmounts a Linux CIFS filesystem. It can be invoked
       indirectly by the umount(8) command when umount.cifs is in /sbin
       directory, unless you specify the "-i" option to umount. Specifying -i
       to umount avoids execution of umount helpers such as umount.cifs. The
       umount.cifs command only works in Linux, and the kernel must support
       the cifs filesystem. The CIFS protocol is the successor to the SMB
       protocol and is supported by most Windows servers and many other
       commercial servers and Network Attached Storage appliances as well as
       by the popular Open Source server Samba.

       The umount.cifs utility detaches the local directory mount-point from
       the corresponding UNC name (exported network resource) and frees the
       associated kernel resources. It is possible to set the mode for
       umount.cifs to setuid root (or equivalently update the /etc/permissions
       file) to allow non-root users to umount shares to directories for which
       they have write permission. The umount.cifs utility is typically not
       needed if unmounts need only be performed by root users, or if user
       mounts and unmounts can rely on specifying explicit entries in
       /etc/fstab See

       fstab(5)

OPTIONS
       --verbose
	   print additional debugging information

       --no-mtab
	   Do not update the mtab even if unmount completes successfully
	   (/proc/mounts will still display the correct information)

NOTES
       This command is normally intended to be installed setuid (since root
       users can already run unmount). An alternative to using umount.cifs is
       to add specfic entries for the user mounts that you wish a particular
       user or users to mount and unmount to /etc/fstab

CONFIGURATION
       The primary mechanism for making configuration changes and for reading
       debug information for the cifs vfs is via the Linux /proc filesystem.
       In the directory /proc/fs/cifs are various configuration files and
       pseudo files which can display debug information. For more information
       see the kernel file fs/cifs/README.

BUGS
       At this time umount.cifs does not lock the mount table using the same
       lock as the umount utility does, so do not attempt to do multiple
       unmounts from different processes (and in particular unmounts of a cifs
       mount and another type of filesystem mount at the same time).

       If the same mount point is mounted multiple times by cifs, umount.cifs
       will remove all of the matching entries from the mount table (although
       umount.cifs will actually only unmount the last one), rather than only
       removing the last matching entry in /etc/mtab. The pseudofile
       /proc/mounts will display correct information though, and the lack of
       an entry in /etc/mtab does not prevent subsequent unmounts.

       Note that the typical response to a bug report is a suggestion to try
       the latest version first. So please try doing that first, and always
       include which versions you use of relevant software when reporting bugs
       (minimum: umount.cifs (try umount.cifs -V), kernel (see /proc/version)
       and server type you are trying to contact.

VERSION
       This man page is correct for version 1.34 of the cifs vfs filesystem
       (roughly Linux kernel 2.6.12).

SEE ALSO
       Documentation/filesystems/cifs.txt and fs/cifs/README in the linux
       kernel source tree may contain additional options and information.

       mount.cifs(8)

AUTHOR
       Steve French

       The syntax was loosely based on the umount utility and the manpage was
       loosely based on that of mount.cifs.8. The man page was created by
       Steve French

       The maintainer of the Linux cifs vfs and the userspace tool umount.cifs
       is Steve French. The Linux CIFS Mailing list is the preferred place to
       ask questions regarding these programs.

Samba 3.0			  11/20/2008			UMOUNT.CIFS(8)
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