Veritas Storage Foundation Portable Data Containers: Cross-Platform Data Sharing 5.0.1 Administrators Guide, HP-UX 11i v3, First Edition, November 2009

# vxcdsconvert -g diskgroup [-A] [-d defaults_file] \

[-o novolstop] alignment [attribute=value] ...

# vxcdsconvert -g diskgroup [-A] [-d defaults_file] \

[-o novolstop] group [attribute=value] ...

The alignment and group keywords have the following effect:

Specifies alignment conversion where disks are not converted,

and an object relayout is performed on the disk group. A

successful completion results in an 8K-aligned disk group. You

might consider this option, rather than converting the entire

disk group, if you want to reduce the amount of work to be done

for a later full conversion to CDS disk group.

alignment

Specifies group conversion of all non-CDS disks in the disk

groupbefore realying out objects in the disk group.

group

The conversion involves evacuating objects from the disk, reinitializing the

disk, and relocating objects back to disk. You can specify the -o novolstop

option to perform the conversion on-line (that is, while access to the disk

group continues). If the -o novolstop option is not specified, stop any

applications that are accessing the disks, and perform the conversion off-line.

Warning: Specifying the -o novolstop option can greatly increase the amount

of time that is required to perform conversion.

Conversion has the following side effects:

■ Non-CDS disk group 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.

Setting up your system

Converting a non-CDS disk group to a CDS disk group