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Date: Fri, 21 Oct 2005 21:14:44 +0900
From: Craig Hagerman <craighagerman@gmail.com>
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Subject: [linux-lvm] Correct way to add disc to LVM
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To: LVM general discussion and development <linux-lvm@redhat.com>

Hi all,

I want to make sure I understand the correct way to add more disc
space under LVM. If you have LVM set up on one single HD, and then
want to extend that to cover a second HD what is the correct way to
proceed?

>From reading the HOWTO I think this is how it is done. Am I missing
anything essential here?

---------------------------------------------------------------------
Add physical volumes to a volume group:
---------------------------------------------------------------------
Use 'vgextend' to add an initialized physical volume to an existing
volume group.
# vgextend my_volume_group /dev/hdc1
                                    ^^^^^^^^^ new physical volume

---------------------------------------------------------------------
Extend logical volume:
---------------------------------------------------------------------

# lvextend -L12G /dev/myvg/homevol

         will extend /dev/myvg/homevol to 12 Gigabytes.

-----------------------------------------------------------------------------------------------------------
Increase size of file system to match the logical volume (assuming ext2 / 3):
-----------------------------------------------------------------------------------------------------------
   # umount /dev/myvg/homevol/dev/myvg/homevol
   # resize2fs /dev/myvg/homevol
   # mount /dev/myvg/homevol /home


Is this correct? Is this all you have to do?

Craig