On the storage node: root@storage-01:~ # fdisk -l /dev/mapper/cinder--std-volume--542d4bfc--7b64--479e--8eda--5bb929f1c8ed Disk /dev/mapper/cinder--std-volume--542d4bfc--7b64--479e--8eda--5bb929f1c8ed: 20 GiB, 21474836480 bytes, 41943040 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0xe534536a Device Boot Start End Sectors Size Id Type /dev/mapper/cinder--std-volume--542d4bfc--7b64--479e--8eda--5bb929f1c8ed-part1 * 2048 41943006 41940959 20G 83 Linux root@storage-01:~ # lvdisplay --- Logical volume --- LV Path /dev/cinder-std/volume-542d4bfc-7b64-479e-8eda-5bb929f1c8ed LV Name volume-542d4bfc-7b64-479e-8eda-5bb929f1c8ed VG Name cinder-std LV UUID 9mjEIH-RjHt-Xu9r-apch-Ncf1-iAow-voPBGX LV Write Access read/write LV Creation host, time storage-01, 2017-04-25 15:33:37 -0600 LV Status available # open 1 LV Size 20.00 GiB Current LE 5120 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:0 In the instance: gentoo-base ~ # fdisk -l /dev/vda Disk /dev/vda: 20 GiB, 21474836480 bytes, 41943040 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0xe534536a Device Boot Start End Sectors Size Id Type /dev/vda1 * 2048 41943006 41940959 20G 83 Linux gentoo-base ~ # df -h Filesystem Size Used Avail Use% Mounted on udev 10M 4.0K 10M 1% /dev /dev/vda1 2.8G 839M 1.8G 32% / tmpfs 395M 264K 395M 1% /run shm 2.0G 0 2.0G 0% /dev/shm cgroup_root 10M 0 10M 0% /sys/fs/cgroup /dev/sr0 482K 482K 0 100% /mnt/config