[dm-devel] recursive table definition ?

[Heinzmann, Robert]

Hello,

is it possible or will it be possible to use dev-mapper devices within
devmapper tables (recursion) ?

(for software raid 1+0, 5+0 or 5+1 etc.)

Example: 
A stripe over mirrored disks (raid 1+0) as:

m = size of physical disk 
n = size of LV

table_mirr_1:
0-m mirror /dev/sda1 0 /dev/sdb1 0

table_mirr_2: 
0-m mirror /dev/sdc1 0 /dev/sdd1 0

table_stripe:
0-n/2 linear /dev/device-mapper/mirr_1
n/2+1-n linear /dev/device-mapper/mirr_2

Thanks, 

Robert Heinzmann