fssnap man page on Solaris

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fssnap(1M)		System Administration Commands		    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 snap‐
			       shot. If a mount-point or device is not	given,
			       a  list	of all snapshots on the system is dis‐
			       played. When a mount-point or device is	speci‐
			       fied,  detailed information is provided for the
			       specified file system snapshot by default.  The
			       format and meaning of this information is file-
			       system dependent. See the FSType-specific  fss‐
			       nap 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.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌─────────────────────────────┬─────────────────────────────┐
       │      ATTRIBUTE TYPE	     │	    ATTRIBUTE VALUE	   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Availability		     │SUNWcsu			   │
       └─────────────────────────────┴─────────────────────────────┘

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

NOTES
       This command might not be supported for all FSTypes.

SunOS 5.10			  11 Aug 2004			    fssnap(1M)
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