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Chapter 5. Logical partition migrations 115
On the client partition
On the client logical partition first capture details of the resources that are going
to migrate. These may include the details of the root volume group (rootvg), any
data volume groups, and the details of the Fibre Channel card if you are going to
migrate the Fibre Channel card from the client partition to the Virtual I/O Server:
1. List the physical hard disks available using the lspv command:
# lspv
hdisk3 000fe411201305c3 None
hdisk4 000fe4117e88efc0 rootvg active
hdisk5 000fe41181e1734c datasrcvg active
The output from the lspv command shows that there are three disks installed
and the physical volume identifiers (PVIDs), as well as the disks volume group
membership. For this migration, both the rootvg and datasrcvg will be
migrated.
2. At this stage, identify which disk the system is using as a boot disk using
either of two AIX commands, bootlist or getconf:
# bootlist -m normal -o
hdisk4 blv=hd5
or
# getconf BOOT_DEVICE
hdisk4
The previous output confirms that hdisk4 in rootvg is the boot disk.
3. Now capture information about where the disk is sourced from, which could
be local SCSI, virtual SCSI, or SAN-attached disks.
a. List the physical volume information using the AIX lsdev command with
the list disk subtype option. This provides us with:
# lsdev -Cc disk
hdisk3 Available Virtual SCSI Disk Drive
hdisk4 Available 00-08-02 MPIO Other DS4K Array Disk
hdisk5 Available 00-08-02 MPIO Other DS4K Array Disk
The previous output shows that there are three disks, of which hdisk3 is
presented from a virtual SCSI mapping, and disks hdisk4 and hdisk5 are
presented from a multi path IO driver (MPIO).
b. In addition, the MPIO type from the above output is from a DS4000 device
which allows us to query the MPIO characteristics using the AIX
mpio_get_config command:
# mpio_get_config -A
Storage Subsystem worldwide name: 60ab800114632000048ed17e
Storage Subsystem Name = 'ITSO_DS4800'