Public bug reported:
On Ubuntu 24.04.4 LTS with all updates applied I see a serious ZFS
warning at boot time with kernel 6.17.0-35-generic:
root@zoo:~# journalctl -b-0 | grep -i zfs
Jun 10 10:14:00 zoo udevadm[504]: systemd-udev-settle.service is deprecated.
Please fix zfs-load-module.service,
zfs-import-cache.service not to pull it in.
Jun 10 10:14:01 zoo systemd[1]: Starting zfs-load-module.service - Install ZFS
kernel module...
Jun 10 10:14:01 zoo kernel: zfs: module license 'CDDL' taints kernel.
Jun 10 10:14:01 zoo kernel: zfs: module license taints kernel.
Jun 10 10:14:02 zoo kernel: ZFS: Loaded module v2.3.4-1ubuntu2, ZFS pool
version 5000, ZFS filesystem version 5
Jun 10 10:14:02 zoo kernel: ZFS: Using ZFS with kernel 6.17.0-35-generic is
EXPERIMENTAL and SERIOUS DATA LOSS may occur!
root@zoo:~# uname -a
Linux zoo 6.17.0-35-generic #35~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue May 26
19:30:42 UTC 2 x86_64 x86_64 x86_64 GNU/Linux
root@zoo:~# dpkg -l | grep zfs
ii libzfs4linux 2.2.2-0ubuntu9.4 amd64 OpenZFS filesystem library for
Linux - general support
ii zfs-zed 2.2.2-0ubuntu9.4 amd64 OpenZFS Event Daemon
ii zfsutils-linux 2.2.2-0ubuntu9.4 amd64 command-line tools to manage
OpenZFS filesystems
root@zoo:~# zfs version
zfs-2.2.2-0ubuntu9.4
zfs-kmod-2.3.4-1ubuntu2
root@zoo:~# lsb_release -rd
No LSB modules are available.
Description: Ubuntu 24.04.4 LTS
Release: 24.04
root@zoo:~# apt-cache policy linux-image-generic-hwe-24.04
linux-image-generic-hwe-24.04:
Installed: 6.17.0-35.35~24.04.1
Candidate: 6.17.0-35.35~24.04.1
Version table:
*** 6.17.0-35.35~24.04.1 500
500 http://de.archive.ubuntu.com/ubuntu noble-updates/main amd64
Packages
500 http://security.ubuntu.com/ubuntu noble-security/main amd64 Packages
100 /var/lib/dpkg/status
6.8.0-31.31 500
500 http://de.archive.ubuntu.com/ubuntu noble/main amd64 Packages
The warning "Using ZFS with kernel 6.17.0-35-generic is EXPERIMENTAL and
SERIOUS DATA LOSS may occur!" is not there when booting kernel 6.8.0
(linux-image-generic)
linux-image-generic-hwe-24.04 should support ZFS, too?!
** Affects: linux-meta-hwe-6.17 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2156336
Title:
serious ZFS kernel warning at boot time
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