[PATCH 1/2] virdevmapper: Don't error on kernels without DM support

[Michal Privoznik]

On 8/18/20 10:10 AM, Pino Toscano wrote:

> 
> What about stat()ing /dev/mapper/control? That should give you the
> major/minor of that special character device.
> 

That won't help. We need to get the major of devmapper targets. For 
instance, if there is /dev/dm-0 node, it's going to be a block device 
with major of devmapper targets. All devmapper targets will have the 
same major number. And this number can be defined when loading the 
module. Then, /dev/mapper/control is a character device with completely 
different major:minor numbers.

Michal