volmirror - Mirror volumes on a disk or control default mirroring
/usr/sbin/volmirror [-g diskgroup] [-d yes|no] medianame [new_medianame...]
/usr/sbin/volmirror [-g diskgroup] [-d yes|no] -a [new_medianame...]
/usr/sbin/volmirror [-g diskgroup] [-d yes|no]
/usr/sbin/volmirror [-g diskgroup] -D
The volmirror command supports the following options: Limit 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, then rootdg is presumed. Change the default for subsequent volume creation, depending on the option argument. If the option argument is yes, then all subsequent volumes created using the volassist command will automatically be created as mirrored volumes. If the option argument supplied is no, then mirroring will be turned off by default. Mirror all existing volumes for the specified disk group.
The volmirror command provides a mechanism to mirror all the contents of a specified disk, to mirror all currently un-mirrored 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.
volmirror 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 mirrored.
In the first and second listed forms of the command, the
parameter identifies a new disk media
name or set of names. The mirroring operation being performed will use the
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.
The following are examples of the use of the volmirror command. This invocation will cause the disk named disk01 to have its contents mirrored to any available space on any available disk. Subsequent calls to volassist will cause created volumes to be mirrored by default:
The defaults file for