[root@aserver tmp]# for d in $(ls /sys/block/dm-*/dev); do echo -n “$d “;cat $d ; done
/sys/block/dm-0/dev 253:0
/sys/block/dm-10/dev 253:10
/sys/block/dm-11/dev 253:11
/sys/block/dm-1/dev 253:1
/sys/block/dm-2/dev 253:2
/sys/block/dm-3/dev 253:3
/sys/block/dm-4/dev 253:4
/sys/block/dm-5/dev 253:5
/sys/block/dm-6/dev 253:6
/sys/block/dm-7/dev 253:7
/sys/block/dm-8/dev 253:8
/sys/block/dm-9/dev 253:9
[root@aserver tmp]# ls -la /dev/mapper/
total 0
drwxr-xr-x 2 root root 300 Sep 9 00:38 .
drwxr-xr-x 17 root root 31840 Sep 24 17:37 ..
crw——- 1 root root 10, 63 Sep 9 00:37 control
brw-rw—- 1 root disk 253, 11 Sep 9 00:38 oradg-ora_backups_vol
brw-rw—- 1 root disk 253, 9 Sep 9 00:38 oradg-ora_log_vol
brw-rw—- 1 root disk 253, 8 Sep 9 00:38 oradg-ora_opt_vol
brw-rw—- 1 root disk 253, 10 Sep 9 00:38 oradg-ora_vendor_vol
brw-rw—- 1 root disk 253, 5 Sep 9 00:37 sysvg-home
brw-rw—- 1 root disk 253, 1 Sep 9 00:37 sysvg-opt
brw-rw—- 1 root disk 253, 7 Sep 9 00:37 sysvg-optCA
brw-rw—- 1 root disk 253, 0 Sep 9 00:37 sysvg-root
brw-rw—- 1 root disk 253, 6 Sep 9 00:37 sysvg-swap
brw-rw—- 1 root disk 253, 4 Sep 9 00:37 sysvg-tmp
brw-rw—- 1 root disk 253, 2 Sep 9 00:37 sysvg-usr
brw-rw—- 1 root disk 253, 3 Sep 9 00:37 sysvg-var