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vxmirror - mirror volumes on a disk or control default mirroring
/etc/vx/bin/vxmirror
[-g diskgroup ]
[-d yes|no ]
[-t tasktag ]
medianame
[new_medianame...]
/etc/vx/bin/vxmirror
[-g diskgroup ]
[-d yes|no ]
[-t tasktag ]
-a [new_medianame...]
/etc/vx/bin/vxmirror
[-g diskgroup ]
[-d yes|no]
/etc/vx/bin/vxmirror
[-g diskgroup] -D
The vxmirror command provides a mechanism to mirror all
non-mirrored volumes that are located
on a specified disk, to mirror all currently non-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), are
mirrored by adding an additional plex.
Volumes containing subdisks that reside on more than one disk are not
mirrored by vxmirror.
vxmirror is generally called from the vxdiskadm menus. It is
not an interactive command, and after it is called, continues until completion
of the operation or until a failure is detected.
Note:
Generating mirror copies of volumes can take a considerable
time to complete.
In the first listed form of this command, the disk media name is supplied on
the command line to vxmirror. That name is assumed to be the only
disk from which volumes are 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,
new_medianame...
identifies a new disk media name (or set of names). The mirroring
operation uses these names as targets on which to allocate
the mirrors. An error results if the same disk is specified for both
the source and target disk and if no other viable targets are supplied.
Some environments provide guidelines to optimize the VxVM's interaction
with intelligent storage systems. If these guidelines are present, VxVM
follows the guidelines when creating volumes or allocating space for
volumes. By default, vxmirror only creates mirror volumes that
conform with these guidelines. The following options change the
behavior of vxmirror:
-
-o override
-
Creates a mirror of the specified volume and ignores any
storage-specific guidelines. Overriding the guidelines is not
recommended as it can result in incompatible objects, or objects that
cannot be administered by VxVM.
-
-o verify
-
Verifies that the specified mirror can be created without violating any
storage-specific guidelines, but does not create the plex. If any
guidelines are violated, vxmirror exits with an error message.
Note: These options need a specific license. Without the license,
vxmirror ignores the specified option.
-
-a
-
Mirrors all existing volumes for the specified disk group.
-
-d yes | no
-
Changes the default for subsequent volume creation, depending on the option
argument. If yes, then all subsequent
volumes created automatically become
mirrored volumes. If no, then
mirroring is turned off for future volumes created.
-
-D
-
Displays current default status for mirroring.
-
-g diskgroup
-
Limits operation of the command to the given disk group, as specified
by disk group ID or disk group name.
The medianame operands are evaluated relative to the given disk group.
If this option is not specified,
the default disk group is determined using the rules given in
the vxdg(1M) manual page.
-
-t tasktag
-
Specifies using a tasktag as the tag for any tasks created
to perform the mirror operations.
The following command
mirrors all non-mirrored volumes on disk disk01
to the available space on any other available disk.
Subsequent calls to vxassist mirror created volumes by default.
/etc/vx/bin/vxmirror -d yes disk01
This command displays the current status of default mirroring. It
outputs the string yes if mirroring is currently enabled, or no
if mirroring is not enabled.
/etc/vx/bin/vxmirror -D
This command mirrors any volumes on disk02 to disk03.
/etc/vx/bin/vxmirror disk02 disk03
-
/etc/default/vxassist
-
The defaults file for vxassist parameters.
Volumes on the root disk cannot be mirrored to an EFI disk.
vxassist(1M),
vxdiskadm(1M),
vxintro(1M),
vxtask(1M)
Last updated: 17 Jul 2008
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