From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sahid Orentino Ferdjaoui <sahid.ferdjaoui@canonical.com>
Subject: Where to read the WWID of a multipath device
Date: Wed, 20 Mar 2019 11:28:05 +0100
Message-ID: <20190320102805.GA30538@canonical>
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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.