[Bug 1850003] [NEW] /etc/grub.d/10_linux_zfs doesn't skip non-linux zpools

Benjamin Gentil 1850003 at bugs.launchpad.net
Sat Oct 26 22:48:38 UTC 2019 

Public bug reported:

# 1. Symptoms: `update-grub` fails when trying to access an os-release
file

    root at x250:/home/benjamin# update-grub
    Sourcing file `/etc/default/grub'
    Sourcing file `/etc/default/grub.d/init-select.cfg'
    Generating grub configuration file ...
    /etc/grub.d/10_linux_zfs: 338: .: Can't open /tmp/zfsmnt.Ejuktn/etc/os-release
    done

# 2. Cause: 10_linux_zfs is trying to access /etc/os-release in all zpool, even when the system is not Linux based
    + machine_id=rpool/ROOT/openindiana
    + . /tmp/zfsmnt.AC9sAy/etc/os-release
    /etc/grub.d/10_linux_zfs: 339: .: Can't open /tmp/zfsmnt.AC9sAy/etc/os-release
    + pretty_name=
    + boot_list=\n
    + boot_list=
    + on_exit
    + zpool export rpool
    + mountpoint -q /tmp/zfsmnt.AC9sAy
    + true
    + rmdir /tmp/zfsmnt.AC9sAy
    + rm -rf /tmp/zfstmp.lEMWy3
    + exit 0
    done

# 3. Quick fix (for /etc/os-release)

    in /etc/grub.d/10_linux_zfs:321, replace:
        if [ -z  "${etc_dir}" ]; then
    by:
        if [ -z  "${etc_dir}" ] || [ ! -f "${etc_dir}/os-release" ]; then

    then when the file is not found, the zpool is skipped
        root at x250:/home/benjamin# update-grub
        Sourcing file `/etc/default/grub'
        Sourcing file `/etc/default/grub.d/init-select.cfg'
        Generating grub configuration file ...
        Warning: Ignoring rpool/ROOT/openindiana
        Warning: Ignoring rpool/ROOT/openindiana-1
        Warning: Ignoring rpool/ROOT/openindiana-1 at install
        Warning: Ignoring rpool/ROOT/openindiana-1 at 2018-08-24-23:15:22
        Found linux image: vmlinuz-5.0.0-32-generic in x250/ROOT/ubuntu
        Found initrd image: initrd.img-5.0.0-32-generic in x250/ROOT/ubuntu
        Found linux image: vmlinuz-5.3.0-19-generic in x250/ROOT/ubuntu
        Found initrd image: initrd.img-5.3.0-19-generic in x250/ROOT/ubuntu
        Found linux image: vmlinuz-5.0.0-32-generic in x250/ROOT/ubuntu at install
        Found initrd image: initrd.img-5.0.0-32-generic in x250/ROOT/ubuntu at install
        Found linux image: vmlinuz-5.3.0-19-generic in x250/ROOT/ubuntu at install
        Found initrd image: initrd.img-5.3.0-19-generic in x250/ROOT/ubuntu at install
        done

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: grub-common 2.04-1ubuntu12
ProcVersionSignature: Ubuntu 5.3.0-19.20-generic 5.3.1
Uname: Linux 5.3.0-19-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu8
Architecture: amd64
CurrentDesktop: XFCE
Date: Sun Oct 27 00:30:31 2019
SourcePackage: grub2
UpgradeStatus: Upgraded to eoan on 2019-10-26 (0 days ago)
modified.conffile..etc.grub.d.10_linux_zfs: [modified]
mtime.conffile..etc.grub.d.10_linux_zfs: 2019-10-27T00:09:53.228144

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug eoan

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https://bugs.launchpad.net/bugs/1850003

Title:
  /etc/grub.d/10_linux_zfs doesn't skip non-linux zpools

Status in grub2 package in Ubuntu:
  New

Bug description:
  # 1. Symptoms: `update-grub` fails when trying to access an os-release
  file

      root at x250:/home/benjamin# update-grub
      Sourcing file `/etc/default/grub'
      Sourcing file `/etc/default/grub.d/init-select.cfg'
      Generating grub configuration file ...
      /etc/grub.d/10_linux_zfs: 338: .: Can't open /tmp/zfsmnt.Ejuktn/etc/os-release
      done

  # 2. Cause: 10_linux_zfs is trying to access /etc/os-release in all zpool, even when the system is not Linux based
      + machine_id=rpool/ROOT/openindiana
      + . /tmp/zfsmnt.AC9sAy/etc/os-release
      /etc/grub.d/10_linux_zfs: 339: .: Can't open /tmp/zfsmnt.AC9sAy/etc/os-release
      + pretty_name=
      + boot_list=\n
      + boot_list=
      + on_exit
      + zpool export rpool
      + mountpoint -q /tmp/zfsmnt.AC9sAy
      + true
      + rmdir /tmp/zfsmnt.AC9sAy
      + rm -rf /tmp/zfstmp.lEMWy3
      + exit 0
      done

  # 3. Quick fix (for /etc/os-release)

      in /etc/grub.d/10_linux_zfs:321, replace:
          if [ -z  "${etc_dir}" ]; then
      by:
          if [ -z  "${etc_dir}" ] || [ ! -f "${etc_dir}/os-release" ]; then

      then when the file is not found, the zpool is skipped
          root at x250:/home/benjamin# update-grub
          Sourcing file `/etc/default/grub'
          Sourcing file `/etc/default/grub.d/init-select.cfg'
          Generating grub configuration file ...
          Warning: Ignoring rpool/ROOT/openindiana
          Warning: Ignoring rpool/ROOT/openindiana-1
          Warning: Ignoring rpool/ROOT/openindiana-1 at install
          Warning: Ignoring rpool/ROOT/openindiana-1 at 2018-08-24-23:15:22
          Found linux image: vmlinuz-5.0.0-32-generic in x250/ROOT/ubuntu
          Found initrd image: initrd.img-5.0.0-32-generic in x250/ROOT/ubuntu
          Found linux image: vmlinuz-5.3.0-19-generic in x250/ROOT/ubuntu
          Found initrd image: initrd.img-5.3.0-19-generic in x250/ROOT/ubuntu
          Found linux image: vmlinuz-5.0.0-32-generic in x250/ROOT/ubuntu at install
          Found initrd image: initrd.img-5.0.0-32-generic in x250/ROOT/ubuntu at install
          Found linux image: vmlinuz-5.3.0-19-generic in x250/ROOT/ubuntu at install
          Found initrd image: initrd.img-5.3.0-19-generic in x250/ROOT/ubuntu at install
          done

  ProblemType: Bug
  DistroRelease: Ubuntu 19.10
  Package: grub-common 2.04-1ubuntu12
  ProcVersionSignature: Ubuntu 5.3.0-19.20-generic 5.3.1
  Uname: Linux 5.3.0-19-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu8
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Sun Oct 27 00:30:31 2019
  SourcePackage: grub2
  UpgradeStatus: Upgraded to eoan on 2019-10-26 (0 days ago)
  modified.conffile..etc.grub.d.10_linux_zfs: [modified]
  mtime.conffile..etc.grub.d.10_linux_zfs: 2019-10-27T00:09:53.228144

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