.\" Automatically generated by Pod::Man 2.25 (Pod::Simple 3.20) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. \*(C+ will .\" give a nicer C++. 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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" vos_shadow \- Creates a shadow copy of a volume on a different server/partition .SH "SYNOPSIS" .IX Header "SYNOPSIS" \&\fBvos shadow\fR [\fB\-id\fR]\ <\fIvolume\ name\ or\ \s-1ID\s0\ on\ source\fR> [\fB\-fromserver\fR]\ <\fImachine\ name\ on\ source\fR> [\fB\-frompartition\fR]\ <\fIpartition\ name\ on\ source\fR> [\fB\-toserver\fR]\ <\fImachine\ name\ on\ destination\fR> [\fB\-topartition\fR]\ <\fIpartition\ name\ on\ destination\fR> [\fB\-toname\fR\ <\fIvolume\ name\ on\ destination\fR>] [\fB\-toid\fR\ <\fIvolume\ \s-1ID\s0\ on\ destination\fR>] [\fB\-offline\fR] [\fB\-readonly\fR] [\fB\-live\fR] [\fB\-incremental\fR] [\fB\-cell\fR\ <\fIcell\ name\fR>] [\fB\-noauth\fR] [\fB\-localauth\fR] [\fB\-verbose\fR] [\fB\-encrypt\fR] [\fB\-noresolve\fR] [\fB\-config\fR\ <\fIconfig\ directory\fR>] [\fB\-help\fR] .PP \&\fBvos sh\fR [\fB\-id\fR]\ <\fIvolume\ name\ or\ \s-1ID\s0\ on\ source\fR> [\fB\-froms\fR]\ <\fImachine\ name\ on\ source\fR> [\fB\-fromp\fR]\ <\fIpartition\ name\ on\ source\fR> [\fB\-tos\fR]\ <\fImachine\ name\ on\ destination\fR> [\fB\-top\fR]\ <\fIpartition\ name\ on\ destination\fR> [\fB\-ton\fR\ <\fIvolume\ name\ on\ destination\fR>] [\fB\-toi\fR\ <\fIvolume\ \s-1ID\s0\ on\ destination\fR>] [\fB\-o\fR] [\fB\-r\fR] [\fB\-l\fR] [\fB\-in\fR] [\fB\-c\fR\ <\fIcell\ name\fR>] [\fB\-noa\fR] [\fB\-lo\fR] [\fB\-v\fR] [\fB\-e\fR] [\fB\-nor\fR] [\fB\-co\fR\ <\fIconfig\ directory\fR>] [\fB\-h\fR] .SH "DESCRIPTION" .IX Header "DESCRIPTION" The \fBvos shadow\fR command creates a shadow copy of a volume on a different partition or server. .PP A shadow volume is a copy of a volume that does not normally appear in the volume location database (\s-1VLDB\s0). It is a primitive operation that is meant to be used in backup or disaster recovery situations. .SH "CAUTIONS" .IX Header "CAUTIONS" This command is not used during normal OpenAFS administration and may have adverse effects on the \s-1VLDB\s0 if not used properly! This command should only be used by an expert. .PP Using this command on a volume when the source volume is not the same as parent volume used to create the shadow will leave the destination volume in a unknown state. .PP Running \fBvos syncserv\fR or \fBvos syncvldb\fR on a fileserver containing shadow volumes will not update the \s-1VLDB\s0 with the shadowed Read/Write volumes as long as the entries for the source volumes still exist. In a disaster recovery situation the \s-1VLDB\s0 entries for the corresponding source volumes need hence to be deleted first. .PP 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 \fIfs_listquota\fR\|(1). .SH "OPTIONS" .IX Header "OPTIONS" .IP "\fB\-id\fR <\fIvolume name or \s-1ID\s0\fR>" 4 .IX Item "-id " Specifies either the complete name or volume \s-1ID\s0 number of a read/write volume. .IP "\fB\-fromserver\fR <\fImachine name for source\fR>" 4 .IX Item "-fromserver " Identifies the file server machine where the source volume resides. Provide the machine's \s-1IP\s0 address or its host name (either fully qualified or using an unambiguous abbreviation). For details, see \fIvos\fR\|(1). .IP "\fB\-frompartition\fR <\fIpartition name for source\fR>" 4 .IX Item "-frompartition " Names the partition where the source volume resides. Provide the full partition name (for, example, \fB/vicepa\fR) or one of the abbreviated forms described in \fIvos\fR\|(1). .IP "\fB\-toserver\fR <\fImachine name for destination\fR>" 4 .IX Item "-toserver " Identifies the file server machine to which to copy the volume. Provide the machine's \s-1IP\s0 address or its host name (either fully qualified or using an unambiguous abbreviation). For details, see \fIvos\fR\|(1). .IP "\fB\-topartition\fR <\fIpartition name for destination\fR>" 4 .IX Item "-topartition " Names the partition to which to copy the volume. Provide the full partition name (for, example, \fB/vicepa\fR) or one of the abbreviated forms described in \&\fIvos\fR\|(1). .IP "\fB\-toname\fR <\fIvolume name for new copy\fR>" 4 .IX Item "-toname " The complete name of the new volume to create. .IP "\fB\-toid\fR <\fIvolume \s-1ID\s0 for new copy\fR>" 4 .IX Item "-toid " The volume \s-1ID\s0 number to use for the new volume. .IP "\fB\-offline\fR" 4 .IX Item "-offline" Leaves the new volume flagged as off-line in the volume database. .IP "\fB\-readonly\fR" 4 .IX Item "-readonly" Flags the new volume as read-only in the volume database. .IP "\fB\-live\fR" 4 .IX Item "-live" Copies the live volume without cloning. This is normally not necessary and causes the volume to be kept locked for longer than the normal copy mechanism. .IP "\fB\-incremental\fR" 4 .IX Item "-incremental" Copy the changes from the source volume to a previously created shadow volume. .IP "\fB\-cell\fR <\fIcell name\fR>" 4 .IX Item "-cell " Names the cell in which to run the command. Do not combine this argument with the \fB\-localauth\fR flag. For more details, see \fIvos\fR\|(1). .IP "\fB\-noauth\fR" 4 .IX Item "-noauth" Assigns the unprivileged identity \f(CW\*(C`anonymous\*(C'\fR to the issuer. Do not combine this flag with the \fB\-localauth\fR flag. For more details, see \&\fIvos\fR\|(1). .IP "\fB\-localauth\fR" 4 .IX Item "-localauth" Constructs a server ticket using a key from the local \&\fI/usr/afs/etc/KeyFile\fR file. The \fBvos\fR command interpreter presents it to the Volume Server and Volume Location Server during mutual authentication. Do not combine this flag with the \fB\-cell\fR argument or \&\fB\-noauth\fR flag. For more details, see \fIvos\fR\|(1). .IP "\fB\-verbose\fR" 4 .IX Item "-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. .IP "\fB\-encrypt\fR" 4 .IX Item "-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. .IP "\fB\-noresolve\fR" 4 .IX Item "-noresolve" Shows all servers as \s-1IP\s0 addresses instead of the \s-1DNS\s0 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. .IP "\fB\-config\fR <\fIconfiguration directory\fR>" 4 .IX Item "-config " Set the location of the configuration directory to be used. This defaults to \&\fI/usr/vice/etc\fR, except if \fB\-localauth\fR is specified, in which case the default is \fI/usr/afs/etc\fR. This option allows the use of alternative configuration locations for testing purposes. .IP "\fB\-help\fR" 4 .IX Item "-help" Prints the online help for this command. All other valid options are ignored. .SH "OUTPUT" .IX Header "OUTPUT" This command has no output unless \f(CW\*(C`\-verbose\*(C'\fR is specified or there is an error. .SH "PRIVILEGE REQUIRED" .IX Header "PRIVILEGE REQUIRED" The issuer must be listed in the \fI/usr/afs/etc/UserList\fR file on the machines specified with the \fB\-toserver\fR and \fB\-fromserver\fR arguments and on each database server machine. If the \fB\-localauth\fR flag is included, the issuer must instead be logged on to a server machine as the local superuser \f(CW\*(C`root\*(C'\fR. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fIvos\fR\|(1), \&\fIvos_backup\fR\|(1), \&\fIvos_copy\fR\|(1), \&\fIvos_move\fR\|(1) .PP http://www.openafs.org/pipermail/openafs\-info/2005\-July/018469.html discusses motivation for the creation of this command. .PP discusses one possible use for it. .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2008 Jason Edgecombe .PP This documentation is covered by the \s-1BSD\s0 License as written in the doc/LICENSE file. This man page was written by Jason Edgecombe for OpenAFS.