Veritas Volume Manager 5.1 SP1 Administrator"s Guide (5900-1506, April 2011)

If vxunreloc cannot replace the subdisks back to the same original offsets, a force
option is available that allows you to move the subdisks to a specified disk without
using the original offsets.
See the vxunreloc(1M) manual page.
The examples in the following sections demonstrate the use of vxunreloc.
Moving hot-relocated subdisks back to their original disk
Assume that mydg01 failed and all the subdisks were relocated. After mydg01 is
replaced, vxunreloc can be used to move all the hot-relocated subdisks back to
mydg01.
# vxunreloc -g mydg mydg01
Moving hot-relocated subdisks back to a different disk
The vxunreloc utility provides the -n option to move the subdisks to a different
disk from where they were originally relocated.
Assume that mydg01 failed, and that all of the subdisks that resided on it were
hot-relocated to other disks. vxunreloc provides an option to move the subdisks
to a different disk from where they were originally relocated. After the disk is
repaired, it is added back to the disk group using a different name, for example,
mydg05. If you want to move all the hot-relocated subdisks back to the new disk,
the following command can be used:
# vxunreloc -g mydg -n mydg05 mydg01
The destination disk should have at least as much storage capacity as was in use
on the original disk. If there is not enough space, the unrelocate operation will
fail and none of the subdisks will be moved.
Forcing hot-relocated subdisks to accept different offsets
By default, vxunreloc attempts to move hot-relocated subdisks to their original
offsets. However, vxunreloc fails if any subdisks already occupy part or all of the
area on the destination disk. In such a case, you have two choices:
■ Move the existing subdisks somewhere else, and then re-run vxunreloc.
■ Use the -f option provided by vxunreloc to move the subdisks to the
destination disk, but leave it to vxunreloc to find the space on the disk. As
long as the destination disk is large enough so that the region of the disk for
storing subdisks can accommodate all subdisks, all the hot-relocated subdisks
will be unrelocated without using the original offsets.
Administering hot-relocation
Moving relocated subdisks
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