Red Hat CLUSTER SUITE 4.7 - CLUSTER LVM ADMINISTRATORS, Manual, Page: 30 / 108

Chapter 4. LVM Administration with CLI Commands
18
/dev/ram5 [ 16.00 MB]
/dev/ram6 [ 16.00 MB]
/dev/ram7 [ 16.00 MB]
/dev/ram8 [ 16.00 MB]
/dev/ram9 [ 16.00 MB]
/dev/ram10 [ 16.00 MB]
/dev/ram11 [ 16.00 MB]
/dev/ram12 [ 16.00 MB]
/dev/ram13 [ 16.00 MB]
/dev/ram14 [ 16.00 MB]
/dev/ram15 [ 16.00 MB]
/dev/sdb [ 17.15 GB]
/dev/sdb1 [ 17.14 GB] LVM physical volume
/dev/sdc [ 17.15 GB]
/dev/sdc1 [ 17.14 GB] LVM physical volume
/dev/sdd [ 17.15 GB]
/dev/sdd1 [ 17.14 GB] LVM physical volume
7 disks
17 partitions
0 LVM physical volume whole disks
4 LVM physical volumes
4.2.2. Displaying Physical Volumes
There are three commands you can use to display properties of LVM physical volumes:
pvs
,
pvdisplay
, and
pvscan
.
The
pvs
command provides physical volume information in a configurable form, displaying one line
per physical volume. The
pvs
command provides a great deal of format control, and is useful for
scripting. For information on using the
pvs
command to customize your output, see
Section 4.9,
“Customized Reporting for LVM”
.
The
pvdisplay
command provides a verbose multi-line output for each physical volume. It displays
physical properties (size, extents, volume group, etc.) in a fixed format.
The following example shows the output of the
pvdisplay
command for a single physical volume.
# pvdisplay
--- Physical volume ---
PV Name /dev/sdc1
VG Name new_vg
PV Size 17.14 GB / not usable 3.40 MB
Allocatable yes
PE Size (KByte) 4096
Total PE 4388
Free PE 4375
Allocated PE 13
PV UUID Joqlch-yWSj-kuEn-IdwM-01S9-XO8M-mcpsVe
The
pvscan
command scans all supported LVM block devices in the system for physical volumes.