Adding a LVM volume

Our fileserver needed some room for VMWare images. So I needed to add an LVM volume. Martijn came to the rescue and because there was a lot of free space on the server we only needed to add a volume and didn't need to resize another volume.

lvdisplay

nuil@xenon:~$ sudo lvdisplay 
  --- Logical volume ---
  LV Name                /dev/xenon/boot
  VG Name                xenon
  LV UUID                0OMrgo-F6C1-JfKq-yH9d-8zi2-z3jz-6A8ErA
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                100.00 MB
  Current LE             25
  Segments               1
  Allocation             inherit
  Read ahead sectors     0
  Block device           254:0
[---SNIP----]

pvdisplay

nuil@xenon:~$ sudo pvdisplay 
  --- Physical volume ---
  PV Name               /dev/sda5
  VG Name               xenon
  PV Size               696.51 GB / not usable 1.65 MB
  Allocatable           yes 
  PE Size (KByte)       4096
  Total PE              178305
  Free PE               113768
  Allocated PE          64537
  PV UUID               p3Ofku-028q-g0ut-w1Ll-gXlF-Sn9c-9pTws9

lvcreate --name images --size 100G xenon

nuil@xenon:~$ sudo lvcreate --name images --size 100G xenon
  Logical volume "images" created

mkfs.ext3 /dev/mapper/xenon-images

nuil@xenon:~$ sudo mkfs.ext3 /dev/mapper/xenon-images 
mke2fs 1.40.2 (12-Jul-2007)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
13107200 inodes, 26214400 blocks
1310720 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=0
800 block groups
32768 blocks per group, 32768 fragments per group
16384 inodes per group
Superblock backups stored on blocks: 
	32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 
	4096000, 7962624, 11239424, 20480000, 23887872

Writing inode tables: done                            
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 22 mounts or
180 days, whichever comes first.  Use tune2fs -c or -i to override.

vi /etc/fstab

nuil@xenon:~$ sudo vi /etc/fstab 

# /etc/fstab: static file system information.
#
#                
proc            /proc           proc    defaults        0       0
# /dev/mapper/xenon-root
UUID=9c2e4925-a941-4769-ad2d-80d8d54f3906 /               ext3    defaults,errors=remount-ro 0       1
# /dev/mapper/xenon-boot
UUID=1ed62d16-6dfd-4a78-bacb-1746f84e0e15 /boot           ext3    defaults        0       2
# /dev/mapper/xenon-klanten
UUID=73843cd4-c121-4fa7-8128-911b8ee54d76 /media/lvm/klanten ext3    defaults        0       2
# /dev/mapper/xenon-svn
UUID=b1d57aaa-411c-4350-83d3-39cfa1af3b41 /media/lvm/svn  ext3    defaults        0       2
# /dev/sda1
UUID=07D8-0109  /media/sda1     vfat    defaults,utf8,umask=007,gid=46 0       1
# /dev/mapper/xenon-swap
UUID=a38f32cf-e8ef-4b98-8a7c-1f0c9e515e44 none            swap    sw              0       0
/dev/scd0       /media/cdrom0   udf,iso9660 user,noauto,exec 0       0

/dev/mapper/xenon-images /media/lvm/images ext3    defaults        0       2