[Bug 1802525] [NEW] (s)ata disks do not have /dev/disk/by-path links created

[Dan Streetman]

Public bug reported:

[impact]

udev (in trusty) does not create symlinks in /dev/disk/by-path/ for any
disks that are connected via sata.

[test case]

Install trusty onto a system with sata drives, and check /dev/disk/by-
path/ for symlink(s) to those sata drive(s).

[regression potential]

the (s)ata by-path symlinks were removed due to apparent possibility of non-uniqueness:
https://git.kernel.org/pub/scm/linux/hotplug/udev.git/commit/?id=481dcf7c8f

however that was *long* ago and it has been added back in:
https://github.com/systemd/systemd/commit/ba86822db70d9ffd02ad78cd02b237ff8c569c7a

if there is still a possibility for non-uniqueness, then /dev/disk/by-
path/ symlink(s) might be created that are non-deterministic as far as
the actual disk/path they point to.

** Affects: systemd (Ubuntu)
     Importance: Undecided
         Status: Fix Released

** Affects: systemd (Ubuntu Trusty)
     Importance: Low
     Assignee: Dan Streetman (ddstreet)
         Status: In Progress

** Also affects: systemd (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Changed in: systemd (Ubuntu Trusty)
       Status: New => In Progress

** Changed in: systemd (Ubuntu Trusty)
   Importance: Undecided => Low

** Changed in: systemd (Ubuntu Trusty)
     Assignee: (unassigned) => Dan Streetman (ddstreet)

** Changed in: systemd (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1802525

Title:
  (s)ata disks do not have /dev/disk/by-path links created

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Trusty:
  In Progress

Bug description:
  [impact]

  udev (in trusty) does not create symlinks in /dev/disk/by-path/ for
  any disks that are connected via sata.

  [test case]

  Install trusty onto a system with sata drives, and check /dev/disk/by-
  path/ for symlink(s) to those sata drive(s).

  [regression potential]

  the (s)ata by-path symlinks were removed due to apparent possibility of non-uniqueness:
  https://git.kernel.org/pub/scm/linux/hotplug/udev.git/commit/?id=481dcf7c8f

  however that was *long* ago and it has been added back in:
  https://github.com/systemd/systemd/commit/ba86822db70d9ffd02ad78cd02b237ff8c569c7a

  if there is still a possibility for non-uniqueness, then /dev/disk/by-
  path/ symlink(s) might be created that are non-deterministic as far as
  the actual disk/path they point to.

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