Hello,

isn't there an official major/minor numbering scheme for virtio disks?

Sometimes I see 251 major or 252 or so... what is the udev assignment logic?

Reading here:

https://www.kernel.org/doc/Documentation/admin-guide/devices.txt

 240-254 block	LOCAL/EXPERIMENTAL USE
		Allocated for local/experimental use.  For devices not
		assigned official numbers, these ranges should be
		used in order to avoid conflicting with future assignments.

it seems they are in the range of experimental ones, while for example Xen /dev/xvdx devices have their own static assignment (202 major)

Thanks,

Gianluca