[root@ceph-node1 ceph]# lsblk
NAME                           MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sr0                             11:0    1 1024M  0 rom
sda                              8:0    0   10G  0 disk
├─sda1                           8:1    0  500M  0 part /boot
└─sda2                           8:2    0  9.5G  0 part
  ├─vg_cephnode-lv_root (dm-0) 253:0    0  8.5G  0 lvm  /
  └─vg_cephnode-lv_swap (dm-1) 253:1    0    1G  0 lvm  [SWAP]
sdb                              8:16   0   10G  0 disk
├─sdb1                           8:17   0    5G  0 part /var/lib/ceph/osd/ceph-0
└─sdb2                           8:18   0    5G  0 part
sdc                              8:32   0   10G  0 disk
├─sdc1                           8:33   0    5G  0 part /var/lib/ceph/osd/ceph-1
└─sdc2                           8:34   0    5G  0 part
sdd                              8:48   0   10G  0 disk
├─sdd1                           8:49   0    5G  0 part /var/lib/ceph/osd/ceph-2
└─sdd2                           8:50   0    5G  0 part