====== LVM ======
''df -h'' shows filesystem information

Also helpful: system-config-lvm ((http://www.bross.eu/2007/11/26/how-to-install-lvm-gui-in-ubuntu/))

Remember to look for e.g. samba shares of regarding drives before changing the partition layout. I had a share pointing to a windows drive, which will be vaporized.


===== Commands Overview =====

|                 ^ LVM commands  ^ Szenario A ((#adding_free_disk_space_to_lvm)) ^
^ Information     |''pvscan'' / ''pvs''  |    |
|                 |''pvdisplay''  |    |
|                 |''vgscan'' / ''vgs''  |    |
|                 |''vgdisplay''  |    |
|                 |''lvscan'' / ''lvs''  |    |
|                 |''lvdisplay''  |    |
^ Create          |''pvcreate''  |  3  |
|                 |''vgcreate''  |    |
|                 |''lvcreate''  |    |
^ Modification    |''pvmove''  |  5  |
|                 |''vgextend'' / ''vgreduce''  |  4  |
|                 |''lvextend'' / ''lvreduce''  |    |
^ Other           |''cfdisk''  |  1  |
|                 |''umount''  |  2  |
|                 |''resize2fs''  |    |



===== Adding free disk space to lvm =====

Adding free disc space to lvm:
  - Delete useless windows partition (don't forget to backup data!) in case there is no free disc space
  - use ''cfdisk /dev/hdb'' to create a partition, the type has to be ''8e'' to mark it as LVM controlled
  - ''umount /dev/hdb1'' (assuming you are dealing with hdb1)
  - ''pvcreate /dev/hdb1'' -> now there is a physical volume
  - ''vgextend lvm_vg1 /dev/hdb1'' -> extend volume group named ''lvm_vg1'' to physical device ''/dev/hdb1''
  - ''pvmove /dev/hda4 /dev/hdb1'' -> move contents of ''/dev/hda4'' to ''/dev/hdb1''
  - ''Entferne Datenträger aus Datenträgergruppe'' - using system-config-lvm tool
  - ''pvremove /dev/hda4''


===== Last steps =====
  * create filesystem
  * after resize: resize filesystem ''resize2fs'' (ext2/3)