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


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

vos e -i <volume name or ID> [-ex] [-f] [-c <cell name>] [-noa] [-l] [-v] [-e] [-nor] [-h]

vos volinfo -id <volume name or ID> [-extended] [-format] [-cell <cell name>] [-noauth] [-localauth] [-verbose] [-encrypt] [-noresolve] [-help]

vos v -i <volume name or ID> [-ex] [-f] [-c <cell name>] [-noa] [-l] [-v] [-e] [-nor] [-h]


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.


Currently, the maximum quota for a volume is 2 terabytes (2^41 bytes). Note that this only affects the volume's quota; a volume may grow much larger if the volume quota is disabled. However, volumes over 2 terabytes in size may be impractical to move, and may have their size incorrectly reported by some tools, such as fs_listquota(1).


-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.


Displays statistics about read and write operations on files and directories in the volume.


Shows information in a format suitable for machine parsing.

-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).


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


Constructs a server ticket using a key from the local /usr/afs/etc/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).


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.


Encrypts the command so that the operation's results are not transmitted across the network in clear text. This option is available in OpenAFS versions 1.4.11 or later and 1.5.60 or later.


Shows all servers as IP addresses instead of the DNS name. This is very useful when the server address is registered as or when dealing with multi-homed servers. This option is available in OpenAFS versions 1.4.8 or later and 1.5.35 or later.


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


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.

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

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 /usr/afs/logs 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:

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


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/ directory). For the sake of illustration, the output shows the volume as locked.

   % vos examine usr
   usr                           536870981 RW   3459 K On-line /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 partition /vicepa RO Site
           server partition /vicepa RO Site
           server 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 /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 partition /vicepc RW Site




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)


IBM Corporation 2000. <> All Rights Reserved.

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