First, moving populated disks between diskgroups.
Get a list of disks in the diskgroup that you intend to move the populated disks out of.
# vxdisk list | grep rootdg
Get the configuration of the diskgroup.
# vxprint -ht -g rootdg
Determine which disks contain the volumes that are to be moved.
Save the configuration of the desired volumes in a format that can be used later by vxmake to recreate the volumes. Specify all volumes on the disks in question, plus any unassociated plexes and their child subdisks, plus any unassociated subdisks.
# vxprint -hmQq -g rootdg vol01 vol02 vol03 > /tmp/volinfo
Unmount the appropriate filesystems, and/or stop any processes holding the volumes open.
Stop all the volumes.
# vxvol -g rootdg stop vol01 vol02 vol03
Remove from the configuration database the definitions of the structures ( (volumes, plexes, subdisks) to be moved. NOTE that this does not affect your data.
# vxedit -g rootdg -r rm vol01 vol02 vol03
Remove the disks from the original diskgroup.
# vxdg -g roodg rmdisk rootdg01 rootdg02 rootdg03 rootdg04
If you are moving the disks to a preexisting diskgroup, SKIP THIS STEP. If not, initialize the diskgroup using one of your disks. It is simplest to keep the old disk names until a later step.
# vxdg init newdg rootdg01=c1t2d0s2
Add the disks to their new disk group. It is simplest to keep the old disk names until a later step.
# vxdg -g newdg adddisk rootdg02 rootdg03 rootdg04
Verify that the disks are in their new diskgroup.
# vxdisk list | grep newdg
Reload the object configuration into the new diskgroup.
# vxmake -g newdg -d /tmp/volinfo
Verify the configuration of the new diskgroup.
# vxprint -ht -g newdg
Test your data.
Second, moving rootdg between systems.
Get the diskgroup ID (dgid) of rootdg from the old host.
# vxdisk -s list
(example)
Disk: c1t5d0s2type: slicedflags: online ready private autoconfig autoimport importeddiskid: 824180434.4523.csclust2dgname: rootdgdgid: 824180442.4528.csclust2hostid: csclust1 Disk: c1t9d0s2type: slicedflags: online ready private autoconfig autoimport importeddiskid: 824180440.4525.csclust2dgname: rootdgdgid: 824180442.4528.csclust2hostid: csclust1 Disk: c1t13d0s2type: slicedflags: online ready private autoconfig autoimport importeddiskid: 830532975.3418.csclust1dgname: rootdgdgid: 824180442.4528.csclust2hostid: csclust1
Shutdown the old host, remove the disks, and connect the disks to the new host.
Import the diskgroup with its new name, assigning ownership of the diskgroup to the new host, using the dgid for the diskgroup name.
# vxdg -C -n newdg import 824180442.4528.csclust2
Perform the necessary steps to make the new host and VxVM recognize the new disks. I.e. perform the steps necessary to make the OS see the disks, and then perform a ‘vxdctl enable’ to restart vxconfigd so that VxVM also recognizes the disks.
Start all volumes in the diskgroup.
# vxrecover -g newdg -sb