 | ||
| Splitting disk groups | ||
|---|---|---|
| Prev | Reorganizing the contents of disk groups | Next |
To remove a self-contained set of VxVM objects from an imported source disk group to a new target disk group, use the following command:
# vxdg [-o expand] [-o override|verify] split sourcedg targetdg \ object ...
The following output from vxprint shows the contents of disk group rootdg.
The output includes two utility fields, TUTIL0 and PUTIL0.. VxVM creates these fields to manage objects and communications between different commands and Symantec products. The TUTIL0 values are temporary; they are not maintained on reboot. The PUTIL0 values are persistent; they are maintained on reboot.
# vxprint Disk group: rootdg TY NAME ASSOC KSTATE LENGTH PLOFFS STATE TUTIL0 PUTIL0 dg rootdg rootdg - - - - - - dm rootdg01 c0t1d0 - 17678493 - - - - dm rootdg02 c1t97d0 - 17678493 - - - - dm rootdg03 c1t112d0 - 17678493 - - - - dm rootdg04 c1t114d0 - 17678493 - - - - dm rootdg05 c1t96d0 - 17678493 - - - - dm rootdg06 c1t98d0 - 17678493 - - - - dm rootdg07 c1t99d0 - 17678493 - - - - dm rootdg08 c1t100d0 - 17678493 - - - - v vol1 fsgen ENABLED 2048 - ACTIVE - - pl vol1-01 vol1 ENABLED 3591 - ACTIVE - - sd rootdg01-01 vol1-01 ENABLED 3591 0 - - - pl vol1-02 vol1 ENABLED 3591 - ACTIVE - - sd rootdg05-01 vol1-02 ENABLED 3591 0 - - -
The following command removes disks rootdg07 and rootdg08 from rootdg to form a new disk group, mydg:
# vxdg -o expand split rootdg mydg rootdg07 rootdg08
By default, VxVM automatically recovers and starts the volumes following a disk group split. If you have turned off the automatic recovery feature, volumes are disabled after a split. Use the following commands to recover and restart the volumes in the target disk group:
# vxrecover -g targetdg -m [volume ...] # vxvol -g targetdg startall
The output from vxprint after the split shows the new disk group, mydg:
# vxprint Disk group: rootdg TY NAME ASSOC KSTATE LENGTH PLOFFS STATE TUTIL0 PUTIL0 dg rootdg rootdg - - - - - - dm rootdg01 c0t1d0 - 17678493 - - - - dm rootdg02 c1t97d0 - 17678493 - - - - dm rootdg03 c1t112d0 - 17678493 - - - - dm rootdg04 c1t114d0 - 17678493 - - - - dm rootdg05 c1t96d0 - 17678493 - - - - dm rootdg06 c1t98d0 - 17678493 - - - - v vol1 fsgen ENABLED 2048 - ACTIVE - - pl vol1-01 vol1 ENABLED 3591 - ACTIVE - - sd rootdg01-01 vol1-01 ENABLED 3591 0 - - - pl vol1-02 vol1 ENABLED 3591 - ACTIVE - - sd rootdg05-01 vol1-02 ENABLED 3591 0 - - - Disk group: mydg TY NAME ASSOC KSTATE LENGTH PLOFFS STATE TUTIL0 PUTIL0 dg mydg mydg - - - - - - dm rootdg07 c1t99d0 - 17678493 - - - - dm rootdg08 c1t100d0 - 17678493 - - - -