HSG80 ACS Solution Software V8.6 for IBM AIM Installation and Configuration Guide

C–6 HSG80 ACS Solution Software Version 8.6 for IBM AIX Installation and Configuration Guide
8. Change the new hdisks PVIDs.
In the example in Step 7, hdisk1 and hdisk2 are part of an active volume group,
however, AIX does not allow hdisk3 and hdisk4 to be imported because the PVIDs are
already known by the system in hdisk1 and hdisk2. Changing the PVIDs for each new
hdisks resolves this issue when using the following command for each new hdisk copy:
chdev –l <New hdisk> -a pv=clear; chdev –l <New hdisk> -a pv=yes
9. Use the recreatevg AIX command to import and activate the new hdisks into a volume
group.
Although Step 9 solves the PVID problem in importing the new hdisks as a volume
group, there are still conflicts with the logical volume found on the new hdisk and
those from the original. recreatevg is an undocumented AIX command, available only
in version 4.3.3, that solves this logical volume issue. It also imports and activates the
volume group. Use the following command:
recreatevg –y <New Volume Group Name> <One of the new hdisks set>
recreatevg also creates a mount point, /fs, under which all mount points from the
original volume group are created, i.e., if the original mount is /disk1, for example,
then the path for the new volume group path will be /fs/disk1. recreatevg also renames
the volume group and logical volume names in the new hdisks by prefixing the original
names with “fs”. As an example, the volume group name “datavg” becomes
“fsdatavg” in the copy.
10. Mount the new volume group’s logical volumes, after which the new logical volumes
should be ready for use. Assuming /disk1 as the original mount point and lv00 as the
original logical volume, the following is an example:
mount /dev/fslv00 /fs/disk1