[linux-lvm] -l 100%FREE doesn't work with RAID1

[Fran Garcia]

On 20 January 2016 at 13:19, Bryan Larsen <bryan at larsen.st> wrote:
> I'm setting up some provisioning scripts, so I don't know the actual sizes
> of the hard drives
>
> $ sudo lvcreate --type raid1 -m 1 -l 100%FREE -n backups hdd_vg
>   Insufficient free space: 781320 extents needed, but only 390658 available
> $ sudo lvcreate --type raid1 -m 1 -l 50%FREE -n backups hdd_vg
>   Insufficient free space: 390662 extents needed, but only 390658 available

the quick and dirty solution... :

EXTENTS=$(sudo vgs -o vg_all --noheadings hdd_vg | awk '{print $12/2}')
lvcreate --type raid1 -m 1 -l $EXTENTS -n backups hdd_vg

:-)