[Bug 2025176] Re: External hard disk fails to automount in /etc/fstab with message FEATURE_C12

[Pablo]

I had built a 23.04 server just to explore the stuff that will be coming
with the next LTS. Shortly afterwards, I had hard drive failures on 2
22.04 LTS systems (both raid1). I decided to use the 23.04 server (also
raid1) for recovery. I created LV's with ext4 fs and copied over the
data from the degraded arrays. I tried to change the 23.04 network to
bridge using the exact procedure that worked flawlessly with 22.04. It
killed networking each time. So I installed 22.04 using the "keep
existing disk layout" method. I did not allow formatting of  the LV's
with data recovered from the degraded raid arrays. Things were looking
good after reboot until I added those volumes to /etc/fstab (with fsck
2nd pass option). On next reboot I discovered this bug. I think it could
be a showstopper for some folks. I now have all that data on volumes
that were reformatted with 22.04 LTS. When 23.10 is released I will
explore it on a VM carefully. I definitely will stick to LTS for backup
storage, nfs, etc. in the future. I think this bug should be assigned an
appropriate importance. I worked around the problem carefully but I can
see how it might cause panic and/or confusion for others and result in
loss of data.

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https://bugs.launchpad.net/bugs/2025176

Title:
  External hard disk fails to automount in /etc/fstab with message
  FEATURE_C12

Status in e2fsprogs package in Ubuntu:
  Confirmed

Bug description:
  I am having a problem with auto mounting an external 14TB 3.5" hard
  disk on Ubuntu 22.04 (arm64) (arm board). The drive is formatted using
  ext4 however this was done on a amd64 based Ubuntu 23.04 install
  (laptop).

  I tried to automount on the 22.04 install by using /etc/fstab, however
  the system would then fail to boot, entering emergency mode.

  Terminal output:
  [FAILED]: Failed to start File System Check on /dev/disk/by-uuuid/xx-xx-xx-xx-xx
  See 'systemctl status "systemd-fsck at dev-disk-by\\xx\\xx\\xx\\xx\\xx'
  [DEPEND] Dependency failed for /mnt/share/external_14tb_drive

  The particular error is:
  /dev/xxx has unsupported feature(s): FEATURE_C12

  /etc/fstab
  UUID=xx-xx-xx-xx-xx /mnt/share/external_14tb_drive ext4 defaults,noatime,nofail  0       2

  arm board description:	Ubuntu 22.04.2 LTS
  Release:	22.04

  apt-cache policy e2fsprogs
  e2fsprogs:
    Installed: 1.46.5-2ubuntu1.1
    Candidate: 1.46.5-2ubuntu1.1
    Version table:
   *** 1.46.5-2ubuntu1.1 500
          500 http://ports.ubuntu.com/ubuntu-ports jammy-updates/main arm64 Packages
          500 http://ports.ubuntu.com/ubuntu-ports jammy-security/main arm64 Packages
          100 /var/lib/dpkg/status
       1.46.5-2ubuntu1 500
          500 http://ports.ubuntu.com/ubuntu-ports jammy/main arm64 Packages

  apt-cache policy util-linux
  util-linux:
    Installed: 2.37.2-4ubuntu3
    Candidate: 2.37.2-4ubuntu3
    Version table:
   *** 2.37.2-4ubuntu3 500
          500 http://ports.ubuntu.com/ubuntu-ports jammy/main arm64 Packages
          100 /var/lib/dpkg/status

  Laptop description:	Ubuntu 23.04
  Release:	23.04

  apt-cache policy e2fsprogs
  e2fsprogs:
    Installed: 1.47.0-1ubuntu1
    Candidate: 1.47.0-1ubuntu1
    Version table:
   *** 1.47.0-1ubuntu1 500
          500 http://gb.archive.ubuntu.com/ubuntu lunar/main amd64 Packages
          100 /var/lib/dpkg/status

  util-linux:
    Installed: 2.38.1-4ubuntu1
    Candidate: 2.38.1-4ubuntu1
    Version table:
   *** 2.38.1-4ubuntu1 500
          500 http://gb.archive.ubuntu.com/ubuntu lunar/main amd64 Packages
          100 /var/lib/dpkg/status

  The only option I have is to manually mount it after boot which is not
  convenient as it a server board.

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: util-linux 2.37.2-4ubuntu3
  Uname: Linux 5.10.110-rockchip-rk3588 aarch64
  ApportVersion: 2.20.11-0ubuntu82.5
  Architecture: arm64
  CasperMD5CheckResult: unknown
  Date: Tue Jun 27 19:38:40 2023
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: util-linux
  UpgradeStatus: No upgrade log present (probably fresh install)

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