Table of Contents
Advertisement
Chapter 4. LVM Administration with CLI Commands
Logical volume "testlv" successfully removed
You could explicitly deactivate the logical volume before removing it with the lvchange -an
command, in which case you would not see the prompt verifying whether you want to remove an
active logical volume.
4.4.7. Displaying Logical Volumes
There are three commands you can use to display properties of LVM logical volumes: lvs,
lvdisplay, and lvscan.
The lvs command provides logical volume information in a configurable form, displaying one line per
logical volume. The lvs command provides a great deal of format control, and is useful for scripting.
For information on using the lvs command to customize your output, see
Reporting for
LVM".
The lvdisplay command displays logical volume properties (such as size, layout, and mapping) in a
fixed format.
The following command shows the attributes of lvol2 in vg00. If snapshot logical volumes have been
created for this original logical volume, this command shows a list of all snapshot logical volumes and
their status (active or inactive) as well.
lvdisplay -v /dev/vg00/lvol2
The lvscan command scans for all logical volumes in the system and lists them, as in the following
example.
# lvscan
ACTIVE
4.4.8. Growing Logical Volumes
To increase the size of a logical volume, use the lvextend command.
After extending the logical volume, you will need to increase the size of the associated file system to
match.
When you extend the logical volume, you can indicate how much you want to extend the volume, or
how large you want it to be after you extend it.
The following command extends the logical volumne /dev/myvg/homevol to 12 gigabytes.
# lvextend -L12G /dev/myvg/homevol
lvextend -- extending logical volume "/dev/myvg/homevol" to 12 GB
lvextend -- doing automatic backup of volume group "myvg"
lvextend -- logical volume "/dev/myvg/homevol" successfully extended
32
'/dev/vg0/gfslv' [1.46 GB] inherit
Section 4.9, "Customized
Advertisement
Table of Contents
