Administering hot-relocation 393

Moving and unrelocating subdisks

without using the original offsets. Refer to the vxunreloc(1M) manual page for more information.

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 mydg01Moving hot-relocated subdisks back to a different disk

The vxunreloc utility provides the -noption 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 -foption 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.

Assume that mydg01 failed and the subdisks were relocated and that you want to move the hot-relocated subdisks to mydg05 where some subdisks already reside. You can use the force option to move the hot-relocated subdisks to mydg05, but not to the exact offsets:

# vxunreloc -g mydg -f -n mydg05 mydg01