> [Regression Potential]
> None.

This is a vast underestimate -- touching udev rules can lead to an
unbootable system in the worst case :-)  I'll adjust the description.

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

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

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

** Also affects: systemd (Ubuntu Zesty)
   Importance: Wishlist
       Status: New

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

** Description changed:

  [Impact]
  
  NVMe drives can't be identified/accessed via /dev/disk/by-id/nvme-SERIAL
  symlinks.
  
  [Test Case]
  
  On a system with an NVMe drive, check the /dev/disk/by-id/ directory;
  with the patch, it will contain link(s) named by the drive serial
- number.
+ number. This should be the *only* change in `ls -l /dev/disk/*/*`.
+ 
+ On a system without NVMe, verify that `ls -l /dev/disk/*/*` is identical
+ (aside from dates, of course) before and after the upgrade to the
+ -proposed version.
  
  [Regression Potential]
  
- None.
+ Errors in udev rules can lead to an unbootable or otherwise completely
+ broken system if they unintentionally break or  clobber existing
+ /dev/disks/ symlinks.
  
  [Other Info]
  
  This patch is already included upstream and in zesty systemd.

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https://bugs.launchpad.net/bugs/1642903

Title:
  introduce disk/by-id (model_serial) symlinks for NVMe drives

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