Linux Volume Expansion

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First determine how your Volumes are partitioned

[adam.craft ~]$ ls -l /dev/mapper/
total 0
crw——- 1 root root  10, 63 Nov  3 12:42 control
brw-rw—- 1 root disk 253,  2 Nov  3 12:43 ds4000-1
brw-rw—- 1 root disk 253,  4 Jan 21 12:26 ds4000-1p1
brw-rw—- 1 root disk 253,  3 Nov  3 12:43 ds4000-2
brw-rw—- 1 root disk 253,  5 Jan 31 12:48 ds4000-2p1
brw——- 1 root root 253,  0 Nov  3 12:43 VolGroup00-LogVol00
brw——- 1 root root 253,  1 Nov  3 12:42 VolGroup00-LogVol01
brw——- 1 root root 253,  6 Nov  3 12:43 VolGroup01-backups
brw——- 1 root root 253,  7 Nov  3 12:43 VolGroup01-journals
brw——- 1 root root 253, 10 Nov  3 12:43 VolGroup02-images
brw——- 1 root root 253,  8 Nov  3 12:43 VolGroup02-mirth
brw——- 1 root root 253, 11 Nov  3 12:43 VolGroup02-mysql
brw——- 1 root root 253,  9 Nov  3 12:43 VolGroup02-openvista

Now determine how much each Volume group has free

[adam.craft~]$ sudo vgdisplay
Password:
— Volume group —
VG Name               VolGroup01
System ID
Format                lvm2
Metadata Areas        1
Metadata Sequence No  6
VG Access             read/write
VG Status             resizable
MAX LV                256
Cur LV                2
Open LV               2
Max PV                256
Cur PV                1
Act PV                1
VG Size               278.89 GB
PE Size               4.00 MB
Total PE              71396
Alloc PE / Size       69632 / 272.00 GB
Free  PE / Size       1764 / 6.89 GB
VG UUID               Ukfnc3-kHnH-vNOA-NfjV-5dvi-bp7W-iCzOy6

— Volume group —
VG Name               VolGroup02
System ID
Format                lvm2
Metadata Areas        1
Metadata Sequence No  27
VG Access             read/write
VG Status             resizable
MAX LV                256
Cur LV                4
Open LV               4
Max PV                256
Cur PV                1
Act PV                1
VG Size               836.69 GB
PE Size               4.00 MB
Total PE              214192
Alloc PE / Size       167424 / 654.00 GB
Free  PE / Size       46768 / 182.69 GB
VG UUID               xdYRWX-degE-z5RD-oZV0-Fz5B-Vvw0-k0tLVO

— Volume group —
VG Name               VolGroup00
System ID
Format                lvm2
Metadata Areas        1
Metadata Sequence No  3
VG Access             read/write
VG Status             resizable
MAX LV                0
Cur LV                2
Open LV               2
Max PV                0
Cur PV                1
Act PV                1
VG Size               278.34 GB
PE Size               32.00 MB
Total PE              8907
Alloc PE / Size       8907 / 278.34 GB
Free  PE / Size       0 / 0
VG UUID               54O6oP-ookA-4aed-GUwV-4vVL-aSnR-WvwYnF

Now resize the Logical Volume (adding 30G in this case)

[adam.craft ~]$ sudo lvresize -L +30G /dev/mapper/VolGroup02-mysql
Password:
Extending logical volume mysql to 126.00 GB
Logical volume mysql successfully resized

Then resize the File System

[adam.craft ~]$ sudo resize2fs -p /dev/mapper/VolGroup02-mysql
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/mapper/VolGroup02-mysql is mounted on /var/lib/mysql; on-line resizing required
Performing an on-line resize of /dev/mapper/VolGroup02-mysql to 33030144 (4k) blocks.
The filesystem on /dev/mapper/VolGroup02-mysql is now 33030144 blocks long.

Check the space after resizing

[adam.craft ~]$ df -k -lh
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
257G  102G  142G  42% /
/dev/sda1              99M   30M   64M  32% /boot
tmpfs                 5.9G     0  5.9G   0% /dev/shm
/dev/mapper/VolGroup02-mirth
16G  2.0G   14G  13% /opt/mirth
/dev/mapper/VolGroup01-backups
176G   66G  101G  40% /backups
/dev/mapper/VolGroup02-mysql
125G   77G   42G  66% /var/lib/mysql
/dev/mapper/VolGroup01-journals
93G   28G   61G  32% /journals
/dev/mapper/VolGroup02-openvista
184G  117G   58G  68% /opt/openvista
/dev/mapper/VolGroup02-images
351G  224G  109G  68% /var/www/html/webdav