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NAME

       vos_examine - Shows volume header and VLDB entry information for a
       volume

SYNOPSIS

       vos examine -id <volume name or ID> [-extended]
           [-cell <cell name>] [-noauth] [-localauth] [-verbose]
           [-help]

       vos e -i <volume name or ID> [-e] [-c <cell name>]
           [-n] [-l] [-v] [-h]

       vos volinfo -i <volume name or ID> [-e] [-c <cell name>]
           [-n] [-l] [-v] [-h]

       vos v -i <volume name or ID> [-e] [-c <cell name>]
           [-n] [-l] [-v] [-h]

DESCRIPTION

       The vos examine command formats and displays information from the
       Volume Location Database (VLDB) entry and the volume header of the
       volume specified by the -id argument.

       To display the volume header only, use the vos listvol command. To
       display information from the VLDB only, use the vos listvldb command.

CAUTIONS

       Currently, the maximum size of a volume is 2 terabytes (2^31 bytes) and
       the maximum size of a /vicepX partition on a fileserver is also 2
       terabytes. The fileserver will not report an error when it has access
       to a partition larger than 2 terabytes, but it will probably fail if
       the administrator attempts to use more than 2 terabytes of space. In
       addition, there are reports of erroneous disk usage numbers when vos
       partinfo or other OpenAFS disk reporting tools are used with partitions
       larger than 2 terabytes.

OPTIONS

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

       -extended
           Display statistics about read and write operations on files and
           directories in the volume.

       -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 first seven lines of the output show information from the volume
       header and the remaining lines come from the VLDB. Each item in the
       following list corresponds to a line of output derived from the volume
       header.

       ·   Basic information about the specified volume (displayed on a single
           line):

           ·   Name

           ·   Volume ID number

           ·   Type (the flag is "RW" for read/write, "RO" for read-only, "BK"
               for backup)

           ·   Size in kilobytes (1024 equals a megabyte)

           ·   Number of files in the volume, if the -extended flag is
               provided

           ·   Status on the file server machine, which is one of the
               following:

               On-line
                   The volume is completely accessible to Cache Managers.

               Off-line
                   The volume is not accessible to Cache Managers, but does
                   not seem to be corrupted. This status appears while a
                   volume is being dumped, for example.

               Off-line**needs salvage**
                   The volume is not accessible to Cache Managers, because it
                   seems to be corrupted. Use the bos salvage or salvager
                   command to repair the corruption.

       ·   The file server machine and partition that house the volume, as
           determined by the command interpreter as the command runs, rather
           than derived from the VLDB or the volume header.

       ·   The volume ID numbers associated with the various versions of the
           volume: read/write ("RWrite"), read-only ("ROnly"), backup
           ("Backup"), and ReleaseClone ("RClone"). One of them matches the
           volume ID number that appears on the first line of the volume’s
           output. If the value in the "RWrite", "ROnly", or "Backup" field is
           0 (zero), there is no volume of that type. If there is currently no
           ReleaseClone, the "RClone" field does not appear at all.

       ·   The maximum space quota allotted to the read/write copy of the
           volume, expressed in kilobyte blocks in the "MaxQuota" field.

       ·   The date and time the volume was created, in the "Creation" field.
           If the volume has been restored with the backup diskrestore, backup
           volrestore, or vos restore command, this is the restore time. For a
           read-only volume, this is the last release time.

       ·   The date and time this copy of this volume was created, in the
           "Copy" field.  This is the time when the volume was created on this
           server and partition.  For read-only volumes, it is not updated by
           a release (unlike the Creation date).  The copy date is not stored
           in volume dumps.

       ·   The date and time when the contents of the volume last changed, in
           the "Last Update" field. For read-only and backup volumes, it
           matches the timestamp in the "Creation" field.

       ·   The number of times the volume has been accessed for a fetch or
           store operation since the later of the two following times:

           ·   12:00 a.m. on the day the command is issued

           ·   The last time the volume changed location

       When the -extended flag is included, two tables appear next:

       ·   The table labeled "Raw Read/Write Stats" contains information on
           the number of reads (fetches) and writes (stores) made on the
           specified volume.

       ·   The table labeled "Writes Affecting Authorship" contains
           information on writes made to files and directories in the
           specified volume.

       If the following message appears instead of the previously listed
       information, it indicates that a volume is not accessible to Cache
       Managers or the vos command interpreter, for example because a clone is
       being created.

          **** Volume <volume_ID> is busy ****

       If the following message appears instead of the previously listed
       information, it indicates that the File Server is unable to attach the
       volume, perhaps because it is seriously corrupted. The FileLog and
       VolserLog log files in the /var/log/openafs directory on the file
       server machine possibly provide additional information; use the bos
       getlog command to display them.

          **** Could not attach volume <volume_ID> ****

       Following a blank line, information from the VLDB entry appears.  Each
       item in this list corresponds to a separate line in the output:

       ·   The base (read/write) volume name. The read-only and backup
           versions have the same name with a ".readonly" and ".backup"
           extension, respectively.

       ·   The volume ID numbers allocated to the versions of the volume that
           actually exist, in fields labeled "RWrite" for the read/write,
           "ROnly" for the read-only, "Backup" for the backup, and "RClone"
           for the ReleaseClone. (If a field does not appear, the
           corresponding version of the volume does not exist.) The appearance
           of the "RClone" field normally indicates that a release operation
           did not complete successfully; the "Old release" and "New release"
           flags often also appear on one or more of the site definition lines
           described just following.

       ·   The number of sites that house a read/write or read-only copy of
           the volume, following the string "number of sites ->".

       ·   A line for each site that houses a read/write or read-only copy of
           the volume, specifying the file server machine, partition, and type
           of volume ("RW" for read/write or "RO" for read-only). If a backup
           version exists, it is understood to share the read/write site.
           Several flags can appear with a site definition:

           Not released
               Indicates that the vos release command has not been issued
               since the vos addsite command was used to define the read-only
               site.

           Old release
               Indicates that a vos release command did not complete
               successfully, leaving the previous, obsolete version of the
               volume at this site.

           New release
               Indicates that a vos release command did not complete
               successfully, but that this site did receive the correct new
               version of the volume.

       ·   If the VLDB entry is locked, the string "Volume is currently
           LOCKED".

       For further discussion of the "New release" and "Old release" flags,
       see vos_release(1).

EXAMPLES

       The following example shows output for the ABC Corporation volume
       called "usr" with two read-only replication sites (this volume is
       mounted at the /afs/abc.com/usr directory). For the sake of
       illustration, the output shows the volume as locked.

          % vos examine usr
          usr                           536870981 RW   3459 K On-line
               fs2.abc.com /vicepb
               RWrite 5360870981   ROnly 536870982   Backup 536870983
               MaxQuota      40000 K
               Creation    Mon Jun 12 15:22:06 1989
               Copy        Mon Jun 12 15:22:06 1989
               Last Update Fri Jun 16 09:34:35 1989
               5719 accesses in the past day (i.e., vnode references)
               RWrite: 5360870981   ROnly: 536870982   Backup: 536870983
               number of sites -> 3
                  server fs1.abc.com partition /vicepa RO Site
                  server fs3.abc.com partition /vicepa RO Site
                  server fs2.abc.com partition /vicepb RW Site
               Volume is currently LOCKED

       The following example shows the output for the volume "user.terry"
       using the -extended flag. The volume has no read-only replication
       sites.

          % vos examine -id user.terry -extended
          user.terry         354287190 RW    2302 K used 119 files On-line
              fs4.abc.com /vicepc
              RWrite 354287190 ROnly          0 Backup 354287192
              MaxQuota       5000 K
              Creation    Wed Nov 25 17:38:57 1992
              Copy        Wed Nov 25 17:38:57 1992
              Last Update Tue Dec 15 10:46:20 1992
              598 accesses in the past day (i.e., vnode references)
                                Raw Read/Write Stats
                    |-------------------------------------------|
                    |    Same Network     |    Diff Network     |
                    |----------|----------|----------|----------|
                    |  Total   |   Auth   |   Total  |   Auth   |
                    |----------|----------|----------|----------|
          Reads     |       55 |       55 |       38 |       38 |
          Writes    |       95 |       95 |        0 |        0 |
                    |-------------------------------------------|
                             Writes Affecting Authorship
                    |-------------------------------------------|
                    |   File Authorship   | Directory Authorship|
                    |----------|----------|----------|----------|
                    |   Same   |   Diff   |    Same  |   Diff   |
                    |----------|----------|----------|----------|
          0-60 sec  |       38 |        0 |       21 |        1 |
          1-10 min  |        2 |        0 |        7 |        0 |
          10min-1hr |        0 |        0 |        1 |        0 |
          1hr-1day  |        1 |        0 |        5 |        1 |
          1day-1wk  |        0 |        0 |        0 |        0 |
          > 1wk     |        0 |        0 |        0 |        0 |
                    |-------------------------------------------|
              RWrite: 354287190    Backup: 354287192
              number of sites -> 1
                 server fs4.abc.com partition /vicepc RW Site

PRIVILEGE REQUIRED

       None

SEE ALSO

       backup_diskrestore(8), backup_volrestore(8), bos_getlog(8),
       bos_salvage(8), salvager(8), vos(1), vos_listvol(1), vos_listvldb(1),
       vos_release(1), vos_restore(1)

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.