I was just checking my storage/volume on my nodes of OpenShift Origin 1.2.0.
DOCKER_STORAGE_OPTIONS="--storage-driver devicemapper --storage-opt dm.fs=xfs --storage-opt dm.thinpooldev=/dev/mapper/vg1-docker--pool --storage-opt dm.use_deferred_removal=true --storage-opt dm.use_deferred_deletion=true "
Is it normal I see --storage-driver devicemapper? I try to use a volume pool which is also described in the output (vg1-docker-pool).
$lvs showes me:
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
root centos -wi-ao---- xxg
swap centos -wi-ao---- xxg
docker-pool vg1 twi-aot--- xxg
While df -h shows me:
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 14G 8.9G 5.1G 64% /
Is this normal? It seems to me it isn't using my pool or am I wrong? On another cluster of me df-h showes me: /dev/xvda1 which is the disk on which I created my volume group etc. This seems not be like that now because my path should be something like /dev/sdb/ instead of /dev/mapper/centos-root?
But the sieze of /dev/mapper/centos-root is too small to contain all the images which are on that node. So I'm pretty confused. I don't know where my images are saved.