dname for multipath devices should point to mpath dev

Bug #1805673 reported by Ryan Harper on 2018-11-28
This bug affects 1 person
Affects Status Importance Assigned to Milestone
curtin (Ubuntu)

Bug Description

dname for disks creates a symlink based on disk properties, like serial or wwn. In the case that we have disks that are part of a multipath scenario, then the dname will point to one of many kernel block devices (sda, sdb, etc) which actually are the same disk.

The dname for disks that are part of a multipath configuration should instead use the mpath name:

/dev/disk/by-dname/os-root-disk ../../mpath-3333fffff333333

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