resize lvm root volume - ubuntu

Resize your existing disk in VMware Client (using an GParted ISO), and then reboot the virtual host. Then login and check new partition size:

• parted /dev/sda print

Disk /dev/sda: 64.4GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number Start End Size Type File system Flags

1 32.3kB 255MB 255MB primary ext3 boot
2 255MB 2147MB 1892MB extended
5 255MB 2147MB 1892MB logical lvm

Information: Don’t forget to update /etc/fstab, if necessary.

Create new partition from available space. Start with the last end size (2147MB) and end with the total disk size (64.4GB).

• parted /dev/sda "mkpart primary 2147MB 64.4G"

Check newly created partition:

• parted /dev/sda print

Disk /dev/sda: 64.4GB Sector size (logical/physical): 512B/512B Partition Table: msdos

Number Start End Size Type File system Flags

1 32.3kB 255MB 255MB primary ext3 boot
2 255MB 2147MB 1892MB extended
5 255MB 2147MB 1892MB logical lvm
3 2147MB 64.4GB 62.3GB primary

Information: Don’t forget to update /etc/fstab, if necessary.

Create the physical volume from your new parition:

• pvcreate /dev/sda3

Physical volume “/dev/sda3″ successfully created

Check newly created physical volume:

• pvdisplay /dev/sda3

— NEW Physical volume --
PV Name /dev/sda3
VG Name
PV Size 58.00 GB
Allocatable NO
PE Size (KByte) 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID 7gsSxU-Vsf7-QpJp-ZPlR-a3BG-x1b8-tz4pyV

• pvs

PV VG Fmt Attr PSize PFree
/dev/sda3 lvm2 — 58.00G 58.00G
/dev/sda5 ubuntu lvm2 a- 1.76G 0

Extend your existing volume group with the newly created physical volume

• vgextend ubuntu /dev/sda3

Volume group “ubuntu” successfully extended

Check it:

• pvs

PV VG Fmt Attr PSize PFree
/dev/sda3 ubuntu lvm2 a- 58.00G 58.00G
/dev/sda5 ubuntu lvm2 a- 1.76G 0

• vgdisplay

— Volume group --
VG Name ubuntu
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 2
Act PV 2
VG Size 59.75 GB
PE Size 4.00 MB
Total PE 15297
Alloc PE / Size 450 / 1.76 GB
Free PE / Size 14847 / 58.00 GB
VG UUID 5hZbAz-0AgU-I0ui-WNvs-2IgD-IjKi-5sHKi4

Now extend your logical volume with the free PE space (14547):

• lvextend -l +100%FREE /dev/ubuntu/root

Extending logical volume root to 59.62 GB
Logical volume root successfully resized

Resize your root volume (can be done on a live sysyem):

• resize2fs /dev/ubuntu/root

resize2fs 1.40.8 (13-Mar-2008)
Filesystem at /dev/ubuntu/root is mounted on /; on-line resizing required
old desc_blocks = 1, new_desc_blocks = 4

Performing an on-line resize of /dev/ubuntu/root to 15628288 (4k) blocks.

Perform a e2fsck on your root system, if needed. Or just reboot your server, which is safer as it will check the filesystem while it’s not mounted.