[Bug 1861941] Re: bcache by-uuid links disappear after mounting bcache0

[Dan Streetman]

@rbalint @raharper a commit is in the ubuntu-focal git repo for this:
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=3c228b1d9c5d83d7f0f7b7d8f2053a81de57f33c

I was prepping focal for upload, but on reading the last few comments,
should I revert that commit from the focal branch and upload the next
systemd focal version without it? Or should it be included in the focal
upload? Do we need to hold off on updating focal until it's resolved
upstream?

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to systemd in Ubuntu.
https://bugs.launchpad.net/bugs/1861941

Title:
  bcache by-uuid links disappear after mounting bcache0

Status in bcache-tools package in Ubuntu:
  Triaged
Status in linux package in Ubuntu:
  Incomplete
Status in linux-signed package in Ubuntu:
  Confirmed
Status in systemd package in Ubuntu:
  Fix Released
Status in bcache-tools source package in Bionic:
  New
Status in linux source package in Bionic:
  New
Status in linux-signed source package in Bionic:
  New
Status in systemd source package in Bionic:
  New
Status in bcache-tools source package in Focal:
  Confirmed
Status in linux source package in Focal:
  Invalid
Status in linux-signed source package in Focal:
  Confirmed
Status in systemd source package in Focal:
  Confirmed
Status in bcache-tools source package in Groovy:
  Triaged
Status in linux source package in Groovy:
  Incomplete
Status in linux-signed source package in Groovy:
  Confirmed
Status in systemd source package in Groovy:
  Fix Released

Bug description:
  1.
  root at ubuntu:~# lsb_release -rd
  Description:	Ubuntu Focal Fossa (development branch)
  Release:	20.04

  2. 
  root at ubuntu:~# lsb_release -rd
  Description:	Ubuntu Focal Fossa (development branch)
  Release:	20.04
  root at ubuntu:~# apt-cache policy linux-image-virtual 
  linux-image-virtual:
    Installed: 5.4.0.12.15
    Candidate: 5.4.0.12.15
    Version table:
   *** 5.4.0.12.15 500
          500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages
          100 /var/lib/dpkg/status
  root at ubuntu:~# apt-cache policy linux-image-5.4.0-12-generic 
  linux-image-5.4.0-12-generic:
    Installed: 5.4.0-12.15
    Candidate: 5.4.0-12.15
    Version table:
   *** 5.4.0-12.15 500
          500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages
          100 /var/lib/dpkg/status

  3. mount /dev/bcache0 && ls -al /dev/bcache/by-uuid/
  + ls -al /dev/bcache/by-uuid/
  total 0
  drwxr-xr-x 2 root root 60 Feb  4 23:31 .
  drwxr-xr-x 3 root root 60 Feb  4 23:31 ..
  lrwxrwxrwx 1 root root 13 Feb  4 23:31 abdfd1f6-44ce-4266-91db-24667b9ae51a -> ../../bcache0

  4.
  root at ubuntu:~# ls -al /dev/bcache/by-uuid
  ls: cannot access '/dev/bcache/by-uuid': No such file or directory

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: linux-image-5.4.0-12-generic 5.4.0-12.15
  ProcVersionSignature: Ubuntu 5.4.0-12.15-generic 5.4.8
  Uname: Linux 5.4.0-12-generic x86_64
  ApportVersion: 2.20.11-0ubuntu16
  Architecture: amd64
  Date: Tue Feb  4 23:31:52 2020
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=C.UTF-8
   SHELL=/bin/bash
  SourcePackage: linux-signed-5.4
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/bcache-tools/+bug/1861941/+subscriptions