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  man pages->Tru64 Unix man pages -> volmirror (8)              



NAME    [Toc]    [Back]

       volmirror  -  Mirrors volumes on a disk or control default

SYNOPSIS    [Toc]    [Back]

       /usr/sbin/volmirror [-g diskgroup] [-d  yes|no]  medianame

       /usr/sbin/volmirror   [-g   diskgroup]   [-d   yes|no]  -a

       /usr/sbin/volmirror [-g diskgroup] [-d yes|no]

       /usr/sbin/volmirror [-g diskgroup] -D

OPTIONS    [Toc]    [Back]

       The volmirror command supports the following options: Limits
  operation  of the command to the given disk group, as
       specified by disk group ID or disk group name.  The  medianame
  operands  will  be  evaluated relative to the given
       disk group.  If no disk group is supplied to the volmirror
       command, rootdg is presumed.  Changes the default for subsequent
 volume creation, depending on the option argument.
       If the option argument is yes, all subsequent volumes created
 using the volassist  command  will  automatically  be
       created  as  mirrored volumes. If the option argument supplied
 is no, mirroring will be turned off for future  volumes
 by default.  Displays current default status for mirroring.
  Mirrors all existing volumes  for  the  specified
       disk group.

DESCRIPTION    [Toc]    [Back]

       The  volmirror  command provides a mechanism to mirror all
       the contents of a specified disk, to mirror all  currently
       unmirrored  volumes  in  the  specified  disk group, or to
       change or display the current defaults for mirroring.  All
       volumes  that  have only a single plex (mirror copy), will
       be mirrored by adding an additional plex.

       Volumes containing subdisks that reside on more  than  one
       disk will not be mirrored by volmirror.

       The  volmirror  command is generally called from the voldiskadm
 menus. It is not an interactive  command  and  once
       called, will continue until completion of the operation or
       until a failure is detected.


       Due to the nature of generating mirror copies of  volumes,
       this command may take a considerable time to complete.

       In  the  first  listed form of the command, the disk media
       name is supplied on the command line  to  volmirror.  That
       name  is  taken  to  be  the  only disk from which volumes
       should be mirrored. In the case of mirroring volumes  from
       a  specified  disk, only simple single-subdisk volumes are

       In the first and second listed forms of the  command,  the
       new_medianame  ...   parameter identifies a new disk media
       name (or set of names). The mirroring operation being performed
  will  use these names as targets on which to allocate
 the mirrors. An error will result if the same disk is
       specified  for  both  the source and target disk and if no
       other viable targets are supplied.

EXAMPLES    [Toc]    [Back]

       The following are examples of the  use  of  the  volmirror
       command.   The  following  command mirrors the contents of
       the disk named disk01 to any available space on any available
  disk.  Subsequent calls to volassist will cause created
 volumes to be mirrored by default.  volmirror -d  yes
       disk01  The  following command displays the current status
       of default mirroring. It prints the string yes if  mirroring
  is currently enabled or no, if not.  volmirror -D The
       following command  mirrors  any  volumes  on  disk02  onto
       disk03.  volmirror disk02 disk03

FILES    [Toc]    [Back]

       The defaults file for volassist parameters.

SEE ALSO    [Toc]    [Back]

       volintro(8), volassist(8), volrootmir(8)

[ Back ]
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