Step-by-step manual to partition HD with LVM

[Alexander Skwar]

Gabriel M Dragffy <dragffy at yandex.ru>:

> Without wanting to detract from help that the OP of this thread is
> seeking, I am hoping someone (alex? :P) would be able to point me at the
> command to increase the size of a logical volume.

lvresize -L$wanted_size /dev/$vgname/$lvname
lvresize -L+$increase_size /dev/$vgname/$lvname
lvresize -L-$decrease_size /dev/$vgname/$lvname
lvextend
lvreduce

As you can see, lvresize is a "combined" lvextend and lvreduce.

> My VG has about 54g 
> allocated to it, but the logical volumes only use about 44g of that
> space. Soon my root logical volume will require additional space, so I
> need to grow that fs to perhaps use the remaining 10g of space in the
> volume group.

Ah, so you also want to resize your file system.
To do so, you'll need the tool which fits to your filesystem.
Those are:

- JFS: mount -o resize,remount
- Reiserfs3: resize_reiserfs
- XFS: xfs_growfs
- ext3: there's something. I don't know the command
- Reiser4: Not possible.

Check out the excellent LVM Howto at tldp.org. It has examples for
all filesystems, as far as I remember.

Alexander Skwar
-- 
It takes less time to do a thing right than it does to explain why you
did it wrong.
                -- H.W. Longfellow