On Wed, Jan 20, 2016 at 12:19:13PM +0000, Bryan Larsen 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 Works for me here. Perhaps you're using an old version? When run with -vvvv, the key line for me is this one metadata/lv_manip.c:3036 Found fewer allocatable extents for logical volume lvol1 than requested: using 48 extents (reduced by 142). Alasdair _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/