You can simply add the /dev/sda5 partition to your existing volume group on /dev/sda7.
You can do this as root:
At this point the command pvs
should show a single physical volume on partition /dev/sda7
Get to know you LVM structure with the commands vgs
and lvs
. You should see a single volume group and some logical volumes
First you make the partition /dev/sda5 into a LVM physical volume. Make sure that this is the correct partition and it does not have any data on it and it is not mounted anywhere. Any data on /dev/sda5 will be lost after this command:
pvcreate /dev/sda5
Since the partition is not empty, you might have to --force it: pvcreate --force /dev/sda5
Now you can check that pvs
shows two physical volumes, one with a volume groupe on it and one without an associated volume group (/dev/sda5)
Take a note of the volume group name shown by pvs
Now you just add the new physical volume to the existing volume group:
vgextend NAME /dev/sda5
Now use the commands pvs
, vgs
and lvs
to see how the situation has changed.
Now you can extend you existing logical volumes and the file systems on them using these instructions