Veritas Storage Foundation 5.1 SP1 Advanced Features Administrator"s Guide (5900-1503, April 2011)

■ Non-CDS disk groups are upgraded by using the vxdg upgrade command.
If the disk group was originally created by the conversion of an LVM
volume group (VG), rolling back to the original LVM VG is not possible. If
you decide to go through with the conversion, the rollback records for the
disk group will be removed, so that an accidental rollback to an LVM VG
cannot be done.
■ Stopped, but startable volumes, are started for the duration of the
conversion .
■ Any volumes or other objects in the disk group that were created with the
layout=diskalign attribute specified can no longer be disk aligned.
■ Encapsulated disks may lose the ability to be unencapsulated.
■ Performance may be degraded because data may have migrated to different
regions of a disk, or to different disks.
In the following example, the disk group, mydg, and all its disks are converted
to CDS while its volumes are still online:
# vxcdsconvert -g mydg -o novolstop group \
move_subdisks_ok=yes evac_subdisks_ok=yes \
evac_disk_list=disk11,disk12,disk13,disk14
The evac_disk_list attribute specifies a list of disks (disk11 through disk14)
to which subdisks can be evacuated if required.
Before you use the vxcdsconvert command, make sure you understand its
options, attributes, and keywords.
See the vxcdsconvert(1M) manual page.
Verifying licensing
The ability to create or import a CDS disk group is controlled by a CDS license.
CDS licenses are included as part of the Veritas Storage Foundation license.
To verify the CDS enabling license
■ Type the following command:
# vxlicrep
Verify the following line in the output:
Cross-platform Data Sharing = Enabled
Migrating data between platforms
Setting up your system
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