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NAME

       vos_size - Computes the size of a volume dump

SYNOPSIS

       vos size [-cell <cell name>] [-dump]
           [-encrypt] [-help] [-id] <volume name or id>
           [-localauth] [-noauth]
           [-partition <partition name>]
           [-server <machine name>]
           [-time <dump from time>] [-verbose]

DESCRIPTION

       The vos size command shows the size of a volume’s dump for backup
       purposes. The size of the dump may differ from the volume size as
       reported by vos examine or fs listquota. The size is shown in bytes.

       This command is intended for use with backup systems that want to size
       volume dumps before performing them (to optimize use of tape resources,
       for example).

OPTIONS

       -cell <cell name>
           The cell in which the volume resides, if it’s not in the current
           cell.

       -dump
           Show the size of the volume dump for the specified volume.
           Currently, this flag should always be given for vos size to give
           useful information.  It is present to allow this command to provide
           other size estimates in the future.

       -encrypt
           Encrypt the command.

       -help
           Prints the online help for this command. All other valid options
           are ignored.

       -id <volume name or id>
           Specifies either the complete name or volume ID number of the
           read/write, read-only, or backup volume to size.

       -localauth
           Constructs a server ticket using a key from the local
           /etc/openafs/server/KeyFile file. The vos command interpreter
           presents it to the Volume Server and Volume Location Server during
           mutual authentication. Do not combine this flag with the -cell
           argument or -noauth flag. For more details, see vos(1).

       -noauth
           Assigns the unprivileged identity anonymous to the issuer. Do not
           combine this flag with the -localauth flag. For more details, see
           vos(1).

       -partition <partition name>
           Specifies the partition on which the volume resides. Provide the
           -server argument along with this one.

       -server <machine name>
           Specifies the file server machine on which the volume resides.
           Provide the -partition argument along with this one.

       -time <dump from time>
           Specifies whether the dump is full or incremental. Omit this
           argument to size a full dump. See vos_dump(1) for the valid values
           for this option.

       -verbose
           Show more output about what’s going on.

OUTPUT

       When run without -verbose, the output will be:

          Volume: <volume>
          dump_size: <size>

       where <volume> is the name of the volume and <size> is the size of the
       dump in bytes. With -verbose, additional status messages will be
       printed between those two lines.

EXAMPLES

       Sizing a single user volume:

          % vos size user.thoron -dump
          Volume: user.thoron
          dump_size: 36430

       or, more verbosely:

          % vos size user.thoron -dump -verbose
          Volume: user.thoron
          Starting transaction on volume 2003434023... done
          Getting size of volume on volume 2003434023... done
          Ending transaction on volume 2003434023... done
          dump_size: 36430

       Sizing an incremental dump for the same volume:

          % vos size -id user.thoron -time '05/04/2007 00:00:00' -dump
          Volume: user.thoron
          dump_size: 21095

PRIVILEGE REQUIRED

       The issuer must be listed in the /etc/openafs/server/UserList file on
       the machine specified with the -server argument or the machine on which
       the volume is located if -server was not given.  If the -localauth flag
       is included, the issuer must instead be logged on to a server machine
       as the local superuser "root".

SEE ALSO

       fs_listquota(1), vos_dump(1), vos_examine(1)

COPYRIGHT

       Copyright 2007 Jason Edgecombe <jason@rampaginggeek.com>

       This documentation is covered by the BSD License as written in the
       doc/LICENSE file. This man page was written by Jason Edgecombe for
       OpenAFS.