On Wed, 20 Jan 2016 at 13:29 Fran Garcia <franchu.garcia@gmail.com> wrote:
On 20 January 2016 at 13:19, Bryan Larsen <bryan@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
:-)
Two problems with that.
1: I had to replace $12 with $9 to get things to work with my version. So probably best to use -o vg_free_count instead of -o vg_all
2: but more importantly, it has the same problem as -l 50%FREE:
Insufficient free space: 390662 extents needed, but only 390658 available
This works for me:
EXTENTS=$((`sudo vgs -o vg_free_count --noheading hdd_vg`/2 - 2))
sudo lvcreate --type raid1 -m 1 -l $EXTENTS -n backups hdd_vg
Bryan
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