Format Control - Red Hat ENTERPRISE LINUX 4 - LVM ADMINISTRATOR Manual

• Instructions for specifying the units of the report output.

4.9.1. Format Control

Whether you use the pvs, lvs, or vgs command determines the default set of fields displayed and
the sort order. You can control the output of these commands with the following arguments:
• You can change what fields are displayed to something other than the default by using the -o
argument. For example, the following output is the default display for the pvs command (which
displays information about physcial volumes).
# pvs
PV VG
/dev/sdb1 new_vg lvm2 a-
/dev/sdc1 new_vg lvm2 a-
/dev/sdd1 new_vg lvm2 a-
The following command displays only the physical volume name and size.
# pvs -o pv_name,pv_size
PV PSize
/dev/sdb1 17.14G
/dev/sdc1 17.14G
/dev/sdd1 17.14G
• You can append a field to the output with the plus sign (+), which is used in combination with the -o
argument.
The following example displays the UUID of the physical volume in addition to the default fields.
# pvs -o +pv_uuid
PV VG
/dev/sdb1 new_vg lvm2 a-
M7iv-6XqA-dqGeXY
/dev/sdc1 new_vg lvm2 a-
XO8M-mcpsVe
/dev/sdd1 new_vg lvm2 a-
dECm-0RZ3-0dGW-tUqkCS
• Adding the -v argument to a command includes some extra fields. For example, the pvs -v
command will display the DevSize and PV UUID fields in addition to the default fields.
# pvs -v
Scanning for physical volume names
PV VG
/dev/sdb1 new_vg lvm2 a-
D9eB-M7iv-6XqA-dqGeXY
Fmt Attr PSize
17.14G 17.14G
17.14G 17.09G
17.14G 17.14G
Fmt Attr PSize
17.14G 17.14G onFF2w-1fLC-ughJ-D9eB-
17.14G 17.09G Joqlch-yWSj-kuEn-IdwM-01S9-
17.14G 17.14G yvfvZK-Cf31-j75k-
Fmt Attr PSize
17.14G 17.14G
PFree
PFree PV UUID
PFree DevSize PV UUID
17.14G onFF2w-1fLC-ughJ-
Format Control
41