Provided by: openafs-fileserver_1.8.10-2.1ubuntu3.4_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)]
[-logfile <log file] [-config <configuration path>]
[-udpsize <size of socket buffer in bytes>]
[-d <debug level>]
[-nojumbo] [-jumbo]
[-enable_peer_stats] [-enable_process_stats]
[-allow-dotted-principals] [-clear-vol-stats]
[-sync <sync behavior>]
[-rxmaxmtu <bytes>]
[-rxbind]
[-syslog[=<FACILITY]]
[-transarc-logs]
[-sleep <sleep time/run time>]
[-restricted_query (anyuser | admin)]
[-s2scrypt (never | always | inherit)]
[-help]
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.
-transarc-logs
Use Transarc style logging features. Rename the log file /var/log/openafs/VolserLog to
/var/log/openafs/VolserLog.old when the volume server is restarted. This option is provided for
compatibility with older versions.
-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.
-clear-vol-stats
Clear volume access statistics during volume restore and reclone operations. This includes clearing
the volume access statistics of read-only volumes during a volume release. By default, volume access
statistics are preserved during volume restore and reclone operations.
Volume access statistics were cleared by default in versions prior to OpenAFS 1.8.0. This flag is
intended to provide compatible behaviour.
-sync <sync behavior>
This is the same as the -sync option in fileserver(8). See fileserver(8).
-logfile <log file>
Sets the file to use for server logging. If logfile is not specified and no other logging options
are supplied, this will be /var/log/openafs/VolserLog. Note that this option is intended for
debugging and testing purposes. Changing the location of the log file from the command line may
result in undesirable interactions with tools such as bos.
-config <configuration directory>
Set the location of the configuration directory used to configure this service. In a typical
configuration this will be /etc/openafs/server - this option allows the use of alternative
configuration locations for testing purposes.
-rxmaxmtu <bytes>
Defines the maximum size of an MTU. The value must be between the minimum and maximum packet data
sizes for Rx.
-rxbind
Bind the Rx socket to the primary interface only. (If not specified, the Rx socket will listen on all
interfaces.)
-syslog[=<syslog facility>]
Specifies that logging output should go to syslog instead of the normal log file. -syslog=FACILITY
can be used to specify to which facility the log message should be sent.
-sleep <sleep_time/run_time>
This option is obsolete, and is now only accepted for compatibility with older releases. All it does
now is log a warning message about how the option is obsolete.
-restricted_query (anyuser | admin)
Restrict RPCs that query information about volumes to a specific group of users. You can use "admin"
to restrict to AFS administrators. The "anyuser" option doesn't restrict the RPCs and leaves it open
for all users including unauthenticated users, this is the default.
-s2scrypt (never | always | inherit)
Set the cryptographic disposition of inter-volserver traffic.
never
All inter-volserver traffic is unencrypted. This is the default behavior.
always
All inter-volserver traffic is encrypted (using rxkad).
inherit
Inter-volserver traffic will be encrypted if the client connection triggering the server-to-
server traffic is encrypted. This has the effect of encrypting inter-server traffic if the
"-encrypt" option is provided to vos release, for example.
-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.example.com" as part
of the dafs process:
% bos create -server fs2.example.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.
SEE ALSO
BosConfig(5), VolserLog(5), bos_create(8), bos_getlog(8), vos(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.
OpenAFS 2025-05-19 DAVOLSERVER(8)