Specifying Units - Red Hat ENTERPRISE LINUX 5.1 - LVM ADMINISTRATION Manual

Chapter 4. LVM Administration with CLI Commands
/dev/sdc1 17.14G 17.09G

4.9.4. Specifying Units

To specify the unit for the LVM report display, use the --units argument of the report command. You
can specify (b)ytes, (k)ilobytes, (m)egabytes, (g)igabytes, (t)erabytes, (e)xabytes, (p)etabytes, and
(h)uman-readable. The default display is human-readable. You can override the default by setting the
units parameter in the global section of the lvm.conf file.
The following example specifies the output of the pvs command in megabytes rather than the default
gigabytes.
# pvs --units m
PV VG
/dev/sda1
/dev/sdb1 new_vg lvm2 a-
/dev/sdc1 new_vg lvm2 a-
/dev/sdd1 new_vg lvm2 a-
By default, units are displayed in powers of 2 (multiples of 1024). You can specify that units be
displayed in multiples of 1000 by capitalizing the unit specification (B, K, M, G, T, H).
The following command displays the output as a multiple of 1024, the default behavior.
# 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 the output as a multiple of 1000.
# pvs --units G
PV VG
/dev/sdb1 new_vg lvm2 a-
/dev/sdc1 new_vg lvm2 a-
/dev/sdd1 new_vg lvm2 a-
You can also specify (s)ectors (defined as 512 bytes) or custom units.
The following example displays the output of the pvs command as a number of sectors.
# pvs --units s
PV VG
/dev/sdb1 new_vg lvm2 a-
/dev/sdc1 new_vg lvm2 a-
48
Fmt Attr PSize
lvm2 -- 17555.40M 17555.40M
17552.00M 17552.00M
17552.00M 17500.00M
17552.00M 17552.00M
Fmt Attr PSize
17.14G 17.14G
17.14G 17.09G
17.14G 17.14G
Fmt Attr PSize
18.40G 18.40G
18.40G 18.35G
18.40G 18.40G
Fmt Attr PSize
35946496S 35946496S
35946496S 35840000S
PFree
PFree
PFree
PFree