[dm-devel] Where to read the WWID of a multipath device

[Sahid Orentino Ferdjaoui]

Hi,

The question is as indicated on title, what would be the best way to
get the WWID of a multipath device, something which would work on any
systems or storages.

My idea was to read /sys/block/dm-X/name but someone indicated to me
that may not be correct in some situation, like it seems that
/lib/udev/scsi_id would not be correct either.

To give a bit of context it's for an OpenStack library in Python.

Thanks,
s.