Verified successfully on both xenial-proposed and yakkety-proposed.
The test result can refer the link , and I refer the link  to set
up the test env.
Before applying the patch we can see:
Feb 16 08:52:45 juju-zhhuabj-machine-9 systemd: dev-disk-by
\x2did-scsi\x2d360000000000000000e00000000010001.device: Dev dev-disk-by
\x2did-scsi\x2d360000000000000000e00000000010001.device appeared twice
with different sysfs paths
After applying the patch we can see:
Feb 16 09:06:10 juju-zhhuabj-machine-9 systemd-udevd: conflicting
device node '/dev/mapper/360000000000000000e00000000010001' found, link
to '/dev/dm-0' will not be created
** Tags removed: verification-needed
** Tags added: verification-done
** Tags added: verification-xenial-done verification-yakkety-done
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[SRU]'multipath -r' causes /dev/mapper/<wwid> being removed
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