[Bug 1867366] Re: hostnqn fails to automatically generate after installing nvme-cli

[Rafael David Tinoco]

Okay, I'm taking Groovy as an example first.. after installing.. I had:

/etc/nvme/hostid and /etc/nvme/hostnqn correctly generated. After
removing nvme package, I had:

dpkg: warning: while removing nvme-cli, directory '/usr/lib/systemd/system' not empty so not removed
dpkg: warning: while removing nvme-cli, directory '/etc/nvme' not empty so not removed

which is a good sign, it kept my local uuid and nqn:

[rafaeldtinoco at groovy ~]$ cat /etc/nvme/host*
5e430ded-0dae-4dd1-8dc5-b3f490658e3a
nqn.2014-08.org.nvmexpress:uuid:a1e6adf3-9213-4929-833a-ce44226e74e4

Installing package again and contents are the same... remove it and wipe
those files.. I got new files:

[rafaeldtinoco at groovy ~]$ cat /etc/nvme/host*
d76c6ba9-5a5d-4dc9-9dde-698c166af622
nqn.2014-08.org.nvmexpress:uuid:5d6e5dc5-1799-4cc5-b116-c710dca399c7

So I believe this is the correct behavior and it is fine not to worry
about existing hostid uuids in Groovy as it is our -devel release.

Going to Focal now...

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https://bugs.launchpad.net/bugs/1867366

Title:
  hostnqn fails to automatically generate after installing nvme-cli

Status in nvme-cli package in Ubuntu:
  Fix Released
Status in nvme-cli source package in Bionic:
  In Progress
Status in nvme-cli source package in Focal:
  Incomplete
Status in nvme-cli source package in Groovy:
  Fix Released
Status in nvme-cli package in Debian:
  Unknown

Bug description:
  [impact]

  "nvme gen-hostnqn" does not work, leading to no content in
  /etc/nvme/hostnqn

  [test case]

  ddstreet at thorin:~$ cat /etc/nvme/hostnqn

  ddstreet at thorin:~$ nvme gen-hostnqn
  "gen-hostnqn" not supported. Install lib uuid and rebuild.

  [regression potential]

  any regression would likely involve a failure of nvme to interact with
  nvmeof devices, or for other systems connecting to this nvme fabric
  target to encounter errors

  also, the upload for Focal includes a postinst check for the hardcoded
  hostid value (from the 1.9-1 package), and if it's found, it
  regenerates it (so the host has a unique generated value). Anyone
  using the old hardcoded hostid will be affected by this

  [scope]

  xenial does not include the gen-hostnqn command, so this is needed
  only for bionic and later.

  note that in bionic, the 'gen-hostnqn' command exists, but the
  /etc/nvme/hostnqn file is not provided by the package.

  [other info]

  to fix this in debian:
  https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=969183
  https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=969340

  [original description]

  hostnqn fails to automatically generate after installing nvme-cli

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: nvme-cli 1.9-1
  ProcVersionSignature: Ubuntu 5.4.0-9.12-generic 5.4.3
  Uname: Linux 5.4.0-9-generic x86_64
  ApportVersion: 2.20.11-0ubuntu18
  Architecture: amd64
  Date: Fri Mar  6 14:09:20 2020
  Dependencies:
   gcc-9-base 9.2.1-21ubuntu1
   libc6 2.30-0ubuntu3
   libgcc1 1:9.2.1-21ubuntu1
   libidn2-0 2.2.0-2
   libunistring2 0.9.10-2
  InstallationDate: Installed on 2020-03-05 (0 days ago)
  InstallationMedia: Ubuntu-Server 20.04 LTS "Focal Fossa" - Alpha amd64 (20200124)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: nvme-cli
  UpgradeStatus: No upgrade log present (probably fresh install)
  modified.conffile..etc.nvme.hostnqn: [modified]
  mtime.conffile..etc.nvme.hostnqn: 2020-03-06T11:27:08.674276

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