Verify whether the logical volumes are properly defined

Logical volumes must be properly configured to map between the NSD and the underlying disks.

To verify the logical volume configuration, issue the following command:

mmlsnsd -m

The system displays any underlying physical device present on this node, which is backing the NSD. If the underlying device is a logical volume, issue the following command to map from the logical volume to the volume group.

lsvg -o | lsvg -i -l

The system displays a list of logical volumes and corresponding volume groups. Now, issue the lsvg command for the volume group that contains the logical volume. For example:

lsvg gpfs1vg

The system displays information similar to the following example:

VOLUME GROUP:   gpfs1vg                  VG IDENTIFIER:  000195600004c00000000ee60c66352
VG STATE:       active                   PP SIZE:        16 megabyte(s)
VG PERMISSION:  read/write               TOTAL PPs:      542 (8672 megabytes)
MAX LVs:        256                      FREE PPs:       0 (0 megabytes)
LVs:            1                        USED PPs:       542 (8672 megabytes)
OPEN LVs:       1                        QUORUM:         2
TOTAL PVs:      1                        VG DESCRIPTORS: 2
STALE PVs:      0                        STALE PPs:      0
ACTIVE PVs:     1                        AUTO ON:        no
MAX PPs per PV: 1016                     MAX PVs:        32
LTG size:       128 kilobyte(s)          AUTO SYNC:      no
HOT SPARE:      no