VERITAS Storage Foundation 4.1 Cross-Platform Data Sharing Administrator's Guide

Converting a Non-CDS Disk to a CDS Disk
14 VERITAS Storage Foundation CDS Administrator’s Guide
Converting a Non-CDS Disk to a CDS Disk
Use the CDS conversion utility (vxcdsconvert) to convert non-CDS disks to CDS disks, to
make them portable between different operating systems that are running VxVM with the CDS
feature.
# vxcdsconvert -g diskgroup [-A] [-d defaults_file] \
[-o novolstop] disk name [attribute=value] ...
# vxcdsconvert -g diskgroup [-A] [-d defaults_file] \
[-o novolstop] alldisks [attribute=value] ...
Note The existing DA record needs to have a type of auto in order to be re-initialized as a CDS
disk.
You can use vxcdsconvert to convert CDS disks either singly, or by disk group:
◆ Use the disk keyword to specify a single disk for conversion. You might consider this option,
rather than converting the entire disk group, if you do not want a CDS disk group. For
example:
◆ Where a disk in the non-CDS disk group has cross-platform exposure, and you want other
VxVM nodes to recognize the disk and not assume it is available for initialization.
◆ LVM on HP-UX and AIX, and Windows VxVM nodes need to recognize CDS disks, but
not attempt to initialize or manage them.
◆ The intention is to move the disk into an existing CDS disk group.
◆ Use the alldisks keyword to convert all the non-CDS disks in a disk group.
In addition, you can use use the -o novolstop option to perform the conversion on-line (that is,
while use of the disk continues). However, this may greatly increase the amount of time (and work)
required for disk conversion as it may involve evacuating objects from the disk, reinitializing the
disk, and relocating objects back to disk.
Alternatively, stop the application, and perform the conversion off-line. This requires minimal
offline time.
Note Disk conversion may take significantly longer if the -o novolstop option is
specified, depending on the subdisk layout of the disk.
Refer to the vxcdsconvert(1M) manual page for further information on options, attributes, and
keywords.