kpartx verbose info: what does it mean?

loop0p1: device mapper name
(252:2): major:minor of the device
0: starting block of the map (I've never seen anything else than 0)
131072: size of the device in blocks
/dev/loop0: parent device
2048: starting block (block 0 of loop0p1 is block 2048 of loop0)

Question

When mounting images with the wonderful kpartx in verbose mode it displays some, likely very useful, information:

# kpartx -av wheezy_cln.img 
add map loop0p1 (252:2): 0 131072 linear /dev/loop0 2048
add map loop0p2 (252:3): 0 7825408 linear /dev/loop0 133120

I can guess, but does anyone know exactly what these numbers are?

score 2 · Accepted Answer · answered Jan 16 '13 at 18:36

Also see dmsetup table DEVICE

1 Answers1