Purpose
Moves allocated
physical partitions from one physical volume to one or more other
physical volumes.
Syntax
migratepv [ -i ] [ -l LogicalVolume ]
SourcePhysicalVolume DestinationPhysicalVolume...
Description
The
migratepv command
moves allocated physical partitions and the data they contain from
the
SourcePhysicalVolume to one or more other physical volumes.
To limit the transfer to specific physical volumes, use the names
of one or more physical volumes in the
DestinationPhysicalVolume parameter;
otherwise, all the physical volumes in the volume group are available
for the transfer. All physical volumes must be within the same volume
group. The specified source physical volume cannot be included in
the list of
DestinationPhysicalVolume parameters.
Note: - To use this command, you must either have root user
authority or be a member of the system group.
- The migratepv command is not allowed on a snapshot volume
group or a volume group that has a snapshot volume group.
- Running this command on a physical volume that has an active,
firmware-assisted, dump logical volume temporarily changes the location
of the dump device to /dev/sysdumpnull. After you have successfully
migrated the logical volume, this command calls the following command
to set the firmware-assisted, dump logical volume to the original
logical volume.
sysdumpdev -P
The allocation of the new physical partitions
follows the policies defined for the logical volumes that contain
the physical partitions being moved.
When you migrate a physical
volume, the boot logical volume must remain intact. Two contiguous
physical partitions and the new boot image must be built on the new
boot logical volume.
If you specify a logical
volume that contains the boot image, the
migratepv -l command
attempts to find enough contiguous partitions on one of the target
physical volumes. If the migration is successful, the
migratepv command
prints a message that recommends the user run the
bosboot command
to indicate a change in the boot device. The attempted migration fails
if the
migratepv -l command is unable to find enough contiguous
space to satisfy the request.
Note: All Logical Volume Manager migrate
functions work by creating a mirror of the logical volumes involved,
then resynchronizing the logical volumes. The original logical volume
is then removed. If the
migratepv command is used to move a
logical volume containing the primary dump device, the system will
not have an accessible primary dump device during the execution of
the command. Therefore, a dump taken during this execution may fail.
To avoid this, reassign the primary dump device using the
sysdumpdev command
or ensure there is a secondary dump device defined before using
migratepv.
You
can use the
Volumes application
in
Web-based System Manager (wsm) to change
volume characteristics. You could also use the System Management Interface
Tool (SMIT)
smit migratepv fast path to run this command.
Note: For
concurrent mode volume groups migratepv can only be used while
active in enhanced concurrent mode or active in concurrent mode on
SSA disks.
Flags
| Item |
Description |
|---|
| -i |
Reads the DestinationPhysicalVolume parameter from
standard input. |
| -l LogicalVolume |
Moves only the physical partitions allocated to the specified
logical volume and located on the specified source physical volume. |
Examples
- To move physical partitions from hdisk1 to hdisk6 and hdisk7,
enter:
migratepv hdisk1 hdisk6 hdisk7
Physical
partitions are moved from one physical volume to two others within
the same volume group.
- To move physical partitions in logical volume lv02 from hdisk1 to hdisk6,
enter:
migratepv -l lv02 hdisk1 hdisk6
Only
those physical partitions contained in lv02 are moved from
one physical volume to another.
Files
| Item |
Description |
|---|
| /usr/sbin |
Directory where the migratepv command resides. |
| /tmp |
Directory where the temporary files are stored while the
command is running. |