Novell LINUX ENTERPRISE SERVER 11 - STORAGE ADMINISTRATION GUIDE 2-23-2010, Administration Manual, Page: 33 / 140

LVM Configuration 33
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To extend the size of a logical volume:
1 Open a terminal console, log in as the
root
user.
2 If the logical volume contains file systems that are hosted for a virtual machine (such as a Xen
VM), shut down the VM.
3
Dismount the file systems on the logical volume.
4 At the terminal console prompt, enter the following command to grow the size of the logical
volume:
lvextend -L + size /dev/vgname/lvname
For size , specify the amount of space you want to add to the logical volume, such as 10GB.
Replace
/dev/vgname/lvname
with the Linux path to the logical volume, such as
/dev/vg1/
v1
. For example:
lvextend -L +10GB /dev/vg1/v1
For example, to extend an LV with a (mounted and active) ReiserFS on it by 10GB:
lvextend − L +10G /dev/vgname/lvname
resize_reiserfs − s +10GB − f /dev/vg − name/lv − name
For example, to shrink an LV with a ReiserFS on it by 5GB:
umount /mountpoint − of − LV
resize_reiserfs − s − 5GB /dev/vgname/lvname
lvreduce /dev/vgname/lvname
mount /dev/vgname/lvname /mountpoint − of − LV