Man Linux: Main Page and Category List

NAME

       vos_backupsys - Creates a backup volume for several read/write volumes

SYNOPSIS

       vos backupsys [-prefix <common prefix on volume(s)>+]
           [-server <machine name>] [-partition <partition name>]
           [-exclude] [-xprefix <negative prefix on volume(s)>+]
           [-dryrun] [-cell <cell name>] [-noauth] [-localauth]
           [-verbose] [-help]

       vos backups [-pr <common prefix on volume(s)>+]
           [-s <machine name>] [-pa <partition name>] [-e]
           [-x <negative prefix on volume(s)>+] [-d]
           [-c <cell name>] [-n] [-l] [-v] [-h]

DESCRIPTION

       The vos backupsys command clones each indicated read/write volume to
       create a backup version, placing each clone at the same site as its
       read/write source version. It assigns each clone the same name as the
       read/write source, adding a ".backup" extension. It assigns the volume
       ID number already allocated for the backup version in the Volume
       Location Database (VLDB). If a backup version already exists for a
       given volume, the new clone replaces it.

       To clone every read/write volume listed in the VLDB, omit all of the
       command’s options. Otherwise, combine the command’s options to clone
       various groups of volumes. The options use one of two basic criteria to
       select volumes: location (the -server and -partition arguments) or
       presence in the volume name of one of a set of specified character
       strings (the -prefix, -exclude, and -xprefix options).

       To clone only volumes that reside on one file server machine, include
       the -server argument. To clone only volumes that reside on one
       partition, combine the -server and -partition arguments. The -partition
       argument can also be used alone to clone volumes that reside on the
       indicated partition on every file server machine. These arguments can
       be combined with those that select volumes based on their names.

       Combine the -prefix, -exclude, and -xprefix options (with or without
       the -server and -partition arguments) in the indicated ways to select
       volumes based on character strings contained in their names:

       ·   To clone every read/write volume at the specified location whose
           name includes one of a set of specified character strings (for
           example, begins with "user." or includes the string "afs"), use the
           -prefix argument or combine the -xprefix and -exclude options.

       ·   To clone every read/write volume at the specified location except
           those whose name includes one of a set of specified character
           strings, use the -xprefix argument or combine the -prefix and
           -exclude options.

       ·   To clone every read/write volume at the specified location whose
           name includes one of one of a set of specified character strings,
           except those whose names include one of a different set of
           specified character strings, combine the -prefix and -xprefix
           arguments. The command creates a list of all volumes that match the
           -prefix argument and then removes from the list the volumes that
           match the -xprefix argument. For effective results, the strings
           specified by the -xprefix argument must designate a subset of the
           volumes specified by the -prefix argument.

           If the -exclude flag is combined with the -prefix and -xprefix
           arguments, the command creates a list of all volumes that do not
           match the -prefix argument and then adds to the list any volumes
           that match the -xprefix argument. As when the -exclude flag is not
           used, the result is effective only if the strings specified by the
           -xprefix argument designate a subset of the volumes specified by
           the -prefix argument.

       The -prefix and -xprefix arguments both accept multiple values, which
       can be used to define disjoint groups of volumes. Each value can be one
       of two types:

       ·   A simple character string, which matches volumes whose name begin
           with the string. All characters are interpreted literally (that is,
           characters that potentially have special meaning to the command
           shell, such as the period, have only their literal meaning).

       ·   A regular expression, which matches volumes whose names contain the
           expressions. Place a caret ("^") at the beginning of the
           expression, and enclose the entire string in single quotes ('').
           Explaining regular expressions is outside the scope of this
           reference page; see the UNIX manual page for regexp(5) or (for a
           brief introduction) backup_addvolentry(8). As an example, the
           following expression matches volumes that have the string "aix"
           anywhere in their names:

              -prefix  '^.*aix'

       To display a list of the volumes to be cloned, without actually cloning
       them, include the -dryrun flag. To display a statement that summarizes
       the criteria being used to select volume, include the -verbose flag.

       This command can be used to clone a single read/write volume; specify
       its complete name as the -prefix argument. However, it is more
       efficient to use the vos backup command, which employs a more
       streamlined technique for finding a single volume.

OPTIONS

       -prefix <common prefix>
           Specifies one or more simple character strings or regular
           expressions of any length; a volume whose name includes the string
           is placed on the set of volumes to be cloned. Include field
           separators (such as periods) if appropriate. This argument can be
           combined with any combination of the -server, -partition, -exclude,
           and -xprefix options.

       -server <machine name>
           Identifies the file server machine where each read/write source
           volume resides. Provide the machine’s IP address or its host name
           (either fully qualified or using an unambiguous abbreviation). For
           details, see vos(1).

           This argument can be combined with any combination of the -prefix,
           -partition, -exclude, and -xprefix options.

       -partition <partition name>
           Identifies the partition where each read/write source volume
           resides. Provide the partition’s complete name with preceding slash
           (for example, "/vicepa") or use one of the three acceptable
           abbreviated forms. For details, see vos(1).

           This argument can be combined with any combination of the -prefix,
           -server, -exclude, and -xprefix options.

       -exclude
           Reverses the meaning of the -prefix or -xprefix argument. This flag
           can be combined with any combination of the -prefix, -server,
           -partition, and -xprefix options.

       -xprefix <negative prefix>
           Specifies a simple character string or regular expression of any
           length; a volume whose name includes the string is removed from the
           set of volumes to be cloned. Include field separators (such as
           periods) if appropriate. This argument can be combined with any
           combination of the -prefix, -server, -partition, and -exclude
           options.

       -dryrun
           Displays on the standard output stream a list of the volumes to be
           cloned, without actually cloning them.

       -cell <cell name>
           Names the cell in which to run the command. Do not combine this
           argument with the -localauth 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).

       -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).

       -verbose
           Produces on the standard output stream a detailed trace of the
           command’s execution. If this argument is omitted, only warnings and
           error messages appear.

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

OUTPUT

       The command generates the following messages on the standard output
       stream to confirm that the operation was successful:

          done
          Total volumes backed up: <number_cloned>; failed to backup: <failures>

       If the -dryrun flag is included, a list of the volumes to be backed up
       precedes the standard confirmation messages.

       If the -verbose flag is included but not the -dryrun flag, the
       following messages appear for each volume. The output concludes with
       the standard confirmation messages.

          Creating backup volume for <volume_name> on <date/time>
          {Recloning backup volume | Creating a new backup clone} <backup_volumeID> . . .done

       If both the -dryrun and -verbose flags are included, the output begins
       with a statement summarizing the criteria being used to select the
       volumes, followed by a list of the volumes and the standard
       confirmation messages. The format of the criteria summary statement
       depends on which other options are provided:

       ·   If only the -prefix argument is provided, or the -xprefix and
           -exclude options are combined:

              Would have backed up volumes which are prefixed with <string> [or <string>] . .

       ·   If only the -xprefix argument is provided, or the -prefix and
           -exclude options are combined:

              Would have backed up volumes which are not prefixed with <string> [nor <string>] . .

       ·   If the -prefix and -xprefix arguments are combined:

              Would have backed up volumes which are prefixed with <string> [or <string>] \
                 removing those which are prefixed with <x_string> [or <x_string>] . .

       ·   If the -prefix, -xprefix, and -exclude options are provided:

              Would have backed up volumes which are not prefixed with <string> [nor <string>] \
                 adding those which are prefixed with <x_string> [or <x_string>] . .

EXAMPLES

       The following example creates a backup version of every read/write
       volume listed in the cell’s VLDB whose name begins with the string
       user.

          % vos backupsys -prefix user

       The following example, appropriate in the ABC Corporation cell, creates
       a backup version of every read/write volume on the file server machine
       "fs3.abc.com".

          % vos backupsys -server fs3.abc.com

       The following example, appropriate in the State University cell,
       creates a backup version of every read/write volume on the file server
       machine "db1.stateu.edu" except those whose name includes the string
       "temp".

          % vos backupsys  -server db1.stateu.edu -prefix '^.*temp'

       The following example creates a backup version of every volume listed
       in the cell’s VLDB, excluding those whose names contain the string
       "source", but including those whose names contain the string
       "source.current".

          % vos backupsys  -prefix '^.*source' -exclude -xprefix '^.*source\.current'

PRIVILEGE REQUIRED

       The issuer must be listed in the /etc/openafs/server/UserList file on
       the machine specified with the -server argument and on each database
       server machine. If the -localauth flag is included, the issuer must
       instead be logged on to a server machine as the local superuser "root".

SEE ALSO

       backup_addvolentry(8), vos(1), vos_backup(1)

       UNIX manual page for regexp(5)

COPYRIGHT

       IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.

       This documentation is covered by the IBM Public License Version 1.0.
       It was converted from HTML to POD by software written by Chas Williams
       and Russ Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.