fssnap man page on SmartOS

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FSSNAP(1M)							    FSSNAP(1M)

NAME
       fssnap - create temporary snapshots of a file system

SYNOPSIS
       fssnap [-F FSType] [-V] -o special_options /mount/point

       fssnap  -d [-F  FSType] [-V] /mount/point | dev

       fssnap -i [-F FSType] [-V] [-o special_options]
	    [/mount/point | dev]

DESCRIPTION
       The  fssnap command creates a stable, read-only snapshot of a file sys‐
       tem when given either an active mount point or a	 special  device  con‐
       taining	a mounted file system, as in the first form of the synopsis. A
       snapshot is a temporary image of a  file	 system	 intended  for	backup
       operations.

       While the snapshot file system is stable and consistent, an application
       updating files when the snapshot is created might leave these files  in
       an  internally inconsistent, truncated, or otherwise unusable state. In
       such a case, the snapshot will contain these partially written or  cor‐
       rupted  files. It is a good idea to ensure active applications are sus‐
       pended or checkpointed and their associated files are  also  consistent
       during snapshot creation.

       File access times are not updated while the snapshot is being created.

       A  path to the virtual device that contains this snapshot is printed to
       standard output when a snapshot is created.

OPTIONS
       The following options are supported:

       -d
			     Deletes the snapshot associated  with  the	 given
			     file system.

       -F FSType
			     Specifies	the  file  system type to be used. The
			     FSType should either  be  specified  here	or  be
			     determined	 by  matching the block special device
			     with an entry in the  /etc/vfstab	table,	or  by
			     consulting /etc/default/fs.

       -i
			     Displays  the state of any given FSType snapshot.
			     If a mount-point or device is not given,  a  list
			     of all snapshots on the system is displayed. When
			     a mount-point or device  is  specified,  detailed
			     information  is  provided	for the specified file
			     system snapshot by default. The format and	 mean‐
			     ing of this information is file-system dependent.
			     See  the  FSType-specific	fssnap	man  page  for
			     details.

       -o special_options
			     See the FSType-specific man page for fssnap.

       -V
			     Echoes  the  complete  command line, but does not
			     execute the command.

OPERANDS
       The following operands are supported:

       /mount/point
		       The directory where the file system resides.

EXAMPLES
       See FSType-specific man pages for examples.

EXIT STATUS
       The following exit values are returned:

       0
	     Successful completion.

       >0
	     An error occurred.

FILES
       /etc/vfstab
			  Specifies file system type.

       /etc/default/fs
			  Specifies the default local file system type.

SEE ALSO
       fssnap_ufs(1M), attributes(5)

NOTES
       This command might not be supported for all FSTypes.

				 Aug 11, 2004			    FSSNAP(1M)
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