NAME                         MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda                            8:0    0 465.8G  0 disk 
├─sda1                         8:1    0   243M  0 part 
├─sda2                         8:2    0     1K  0 part 
└─sda5                         8:5    0 465.5G  0 part 
  ├─ubuntu--vg-root (dm-0)   252:0    0 461.6G  0 lvm  
  └─ubuntu--vg-swap_1 (dm-1) 252:1    0   3.9G  0 lvm  
sdb                            8:16   1    30G  0 disk 
└─sdb1                         8:17   1    30G  0 part /cdrom
sr0                           11:0    1     2K  0 rom  
loop0                          7:0    0 975.9M  1 loop /rofs