Ubuntu Manpage: davolserver - Initializes the Volume Server component of the dafs process

Provided by: openafs-fileserver_1.6.7-1ubuntu1.1_amd64

NAME

       davolserver - Initializes the Volume Server component of the dafs process

SYNOPSIS

       volserver
           [-log] [-p <number of processes>]
           [-auditlog <log path>] [-audit-interface (file | sysvmq)]
           [-udpsize <size of socket buffer in bytes>]
           [-d <debug level>]
           [-nojumbo] [-jumbo]
           [-enable_peer_stats] [-enable_process_stats]
           [-allow-dotted-principals] [-preserve-vol-stats] [-help]
           [-sync <sync behavior>]

DESCRIPTION

       The davolserver command initializes the Volume Server component of the "dafs" process. In the
       conventional configuration, its binary file is located in the /usr/lib/openafs directory on a file server
       machine.

       The davolserver command is not normally issued at the command shell prompt but rather placed into a file
       server machine's /etc/openafs/BosConfig file with the bos create command. If it is ever issued at the
       command shell prompt, the issuer must be logged onto a database server machine as the local superuser
       "root".

       The Volume Server records a trace of its activity in the /var/log/openafs/VolserLog file. Use the bos
       getlog command to display the contents of the file.

       The Volume Server processes the vos commands that administrators use to create, delete, move, and
       replicate volumes, as well as prepare them for archiving to tape or other media.

       By default, the VL Server runs nine lightweight processes (LWPs). To change the number, use the -p
       argument.

       This command does not use the syntax conventions of the AFS command suites. Provide the command name and
       all option names in full.

OPTIONS

-d <debug level>
Sets the detail level for the debugging trace written to the /var/log/openafs/VolserLog file. Provide
one of the following values, each of which produces an increasingly detailed trace: 0, 1, 5, 25, and
125.

-log
Records in the /var/log/openafs/VolserLog file the names of all users who successfully initiate a vos
command. The Volume Server also records any file removals that result from issuing the vos release
command with the -f flag.

-p <number of processes>
Sets the number of server lightweight processes (LWPs) to run. Provide an integer between 4 and 16.
The default is 9.

-auditlog <log path>
Turns on audit logging, and sets the path for the audit log. The audit log records information about
RPC calls, including the name of the RPC call, the host that submitted the call, the authenticated
entity (user) that issued the call, the parameters for the call, and if the call succeeded or failed.

-audit-interface (file | sysvmq)
Specifies what audit interface to use. Defaults to "file". See fileserver(8) for an explanation of
each interface.

-udpsize <size of socket buffer>
Sets the size of the UDP buffer in bytes, which is 64 KB by default. Provide a positive integer,
preferably larger than the default.

-jumbo
Allows the server to send and receive jumbograms. A jumbogram is a large-size packet composed of 2 to
4 normal Rx data packets that share the same header. The volserver does not use jumbograms by
default, as some routers are not capable of properly breaking the jumbogram into smaller packets and
reassembling them.

-nojumbo
Deprecated; jumbograms are disabled by default.

-enable_peer_stats
Activates the collection of Rx statistics and allocates memory for their storage. For each connection
with a specific UDP port on another machine, a separate record is kept for each type of RPC
(FetchFile, GetStatus, and so on) sent or received. To display or otherwise access the records, use
the Rx Monitoring API.

-enable_process_stats
Activates the collection of Rx statistics and allocates memory for their storage. A separate record
is kept for each type of RPC (FetchFile, GetStatus, and so on) sent or received, aggregated over all
connections to other machines. To display or otherwise access the records, use the Rx Monitoring API.

-allow-dotted-principals
By default, the RXKAD security layer will disallow access by Kerberos principals with a dot in the
first component of their name. This is to avoid the confusion where principals user/admin and
user.admin are both mapped to the user.admin PTS entry. Sites whose Kerberos realms don't have these
collisions between principal names may disable this check by starting the server with this option.

-preserve-vol-stats
Preserve volume access statistics over volume restore and reclone operations. By default, volume
access statistics are reset during volume restore and reclone operations.

-sync <sync behavior>
This is the same as the -sync option in fileserver(8). See fileserver(8).

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

EXAMPLES

       The  following bos create command creates a "davolserver" process on the machine "fs2.abc.com" as part of
       the dafs process:

          % bos create -server fs2.abc.com -instance dafs -type dafs \
                       -cmd "/usr/lib/openafs/dafileserver" \
                       /usr/lib/openafs/davolserver \
                       /usr/lib/openafs/salvageserver \
                       /usr/lib/openafs/dasalvager

PRIVILEGE REQUIRED

       The issuer must be logged in as the superuser "root" on a file server machine to issue the command  at  a
       command  shell  prompt.  It  is  conventional  instead to create and start the process by issuing the bos
       create command.

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.

OpenAFS                                            2015-11-10                                     DAVOLSERVER(8)