Disk Group Operations - VxVM

Points to remember :
a. You cannot add a disk to more than a disk group
b. Disk (device) names must be unique within a disk group
c. A DG can not be named as  bootdg, defaultdg and nodg. These are system-wide reserved disk group
names:
d. A DG name can contain upto 31 characters.

Commands:

1. To create a disk group :
# vxdg init datadg datadg-01=c2t1d0s2

2. To add a disk into an existing disk group :
# vxdg -g datadg adddisk datadg-01=c2t1d0s2

3. To remove a disk from a disk group :
# vxdg –g datadg rmdisk datadg-02

Note: You can not remove the last disk from a dg.

4. To deport a disk group:
# vxdg deport datadg

5. To deport a disk group and rename it :
# vxdg -n newdatadg deport datadg

6. To deport a disk group and specify a new host :
# vxdg -h server2 deport datadg

Note:
a. You need to unmount the filesystems and then stop all the volumes (in datadg) before deporting it.
b. A deported disk group can not be accessed until its imported in the system.

7. To import a disk group :
# vxdg import datadg

8. To import and rename a disk group
# vxdg -n newdatadg import datadg

9. To temporarily import a disk group :
# vxdg -t import datadg

10. To import and rename a disk group temporarily :
# vxdg -t -n newdatadg import datadg

11. To clear import logs while importing a disk group :
# vxdg -C import datadg


12. To destroy a disk group:
# vxdg destroy datadg

13. To list all the disk groups along with their state and id :
# vxdg list

14.  To list detailed info about a disk group :
# vxdg list datadg

15. To show free space in a disk group :
# vxdg -g datadg free

16. To show spare space pool in a disk group :
# vxdg -g datadg spare

17. To upgrade a disk group to version 120 :
# vxdg -T 120 upgrade datadg

18. To upgrade a disk group to the latest version :
# vxdg upgrade datadg

18. To list the current bootdg :
# vxdg bootdg

19. To change the bootdg :
# vxdctl bootdg rootdg

19. To list the current defaultdg :
# vxdg defaultdg

20. To change the defaultdg :
# vxdctl defaultdg datadg

21. To create a non-cds disk group :
# vxdg init datadg datadg-01=c2t1d0s2 cds=off

22. To switch off the cds flag on a dg (It should not contain any cds disk) :
# vxdg -g datadg set cds=off