=head1 NAME

vos_offline - Takes a volume offline

=head1 SYNOPSIS

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B<vos offline> S<<< B<-server> <I<machine name>> >>>
    S<<< B<-partition> <I<partition name>> >>> 
    S<<< B<-id> <I<volume name or ID>> >>>
    S<<< [B<-sleep> <I<seconds to sleep>>] >>> 
    [B<-busy>] S<<< [B<-cell> <I<cell name>>] >>> 
    [B<-noauth>] B<-localauth>]
    [B<-verbose>] [B<-encrypt>] [B<-noresolve>] [B<-help>]

B<vos of> S<<< B<-se> <I<machine name>> >>>
    S<<< B<-p> <I<partition name>> >>> 
    S<<< B<-i> <I<volume name or ID>> >>>
    S<<< [B<-sl> <I<seconds to sleep>>] >>> 
    [B<-b>] S<<< [B<-c> <I<cell name>>] >>> 
    [B<-noa>] B<-l>]
    [B<-v>] [B<-e>] [B<-nor>] [B<-h>]

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=head1 DESCRIPTION

The B<vos offline> command takes a volume offline on the 
B<fileserver>.  

=head1 CAUTIONS

Taking a volume offline that has existing 
callbacks will result in those callbacks being broken
and clients not being able to access the volume.

=head1 OPTIONS

=over 4

=item B<-server> <I<machine name>>

Identifies the file server machine where the volume resides. 
Provide the machine's IP address or its host name (either fully
qualified or using an unambiguous abbreviation). For details, see
L<vos(1)>.

=item B<-partition> <I<partition name>>

Identifies the partition where the volume resides, on the
file server machine named by the B<-server> argument. Provide the
partition's complete name with preceding slash (for example, C</vicepa>)
or use one of the three acceptable abbreviated forms. For details, see
L<vos(1)>.

=item B<-id> <I<volume name or ID>>

Specifies either the complete name or volume ID number of the volume.

=item B<-sleep> <I<seconds to sleep>>

Specifies to sleep for a certain number of seconds after taking the
volume offline before bringing it online again. If this option is
specified, the volume will be online when B<vos offline> successfully
completes. If this option is not specified, B<vos online> must be run to
bring the volume online.

=item B<-busy>

Specifies to mark the volume as `busy' instead of `offline'. This
means that a program trying to access this volume will receive a VBUSY
error instead of a VOFFLINE error (until the volume is brought back
online).

Different programs may react differently when they see these two
different states, but in general a `busy' volume is only unavailable
for a short period of time and will become online soon. An `offline'
volume, on the other hand, is typically unavailable for longer periods
and may not come back online until an administrator intervenes.

As an example of when these states occur normally, a volume can be
`busy' when it is being cloned (perhaps as the result of a
B<vos backup> or B<vos release> operation). A volume can be `offline'
if a non-DAFS fileserver has detected a problem in the volume, and an
administrator must manually schedule a salvage for that volume before
it becomes available again.

If B<-busy> is specified, the B<-sleep> option must also be specified, to
indicate for how long to keep the volume busy.

=item B<-cell> <I<cell name>>

Names the cell in which to run the command. Do not combine this argument
with the B<-localauth> flag. For more details, see L<vos(1)>.

=item B<-noauth>

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

=item B<-localauth>

Constructs a server ticket using a key from the local
F</usr/afs/etc/KeyFile> file. The B<vos> command interpreter presents it
to the Volume Server and Volume Location Server during mutual
authentication. Do not combine this flag with the B<-cell> argument or
B<-noauth> flag. For more details, see L<vos(1)>.

=item B<-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.

=item B<-encrypt>

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.

=item B<-noresolve>

Shows all servers as IP addresses instead of the DNS name. This is very
useful when the server address is registered as 127.0.0.1 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.

=item B<-help>

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

=back

=head1 EXAMPLES

The following example takes an online volume offline:

   % vos offline -server sv7.stateu.edu -partition /vicepb -id root.afs

=head1 PRIVILEGE REQUIRED

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

=head1 SEE ALSO

L<vos(1)>,
L<vos_online(1)>,
L<bos_salvage(8)>,

=head1 COPYRIGHT

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

This man page was created by Steven Jenkins.
