Can't compile ZFS from sources for Ubuntu Lunar

[Jeffrey Walton]

On Sun, Jun 18, 2023 at 8:05 PM Mario Marietto <marietto2008 at gmail.com> wrote:
>
> I tried to compile ZFS from sources for Ubuntu Lunar,but it failed. This is the tutorial that I've followed :
>
> https://uptrace.dev/blog/ubuntu-install-zfs.html
>
>
> this is the full log:
>
>
> sudo apt install build-essential autoconf automake libtool
> gawk alien fakeroot dkms libblkid-dev uuid-dev libudev-dev
> libssl-dev zlib1g-dev libaio-dev libattr1-dev libelf-dev
> linux-headers-$(uname -r) python3 python3-dev python3-
> setuptools python3-cffi libffi-dev python3-packaging git
>
>
> Compile ZFS:
>
>
> git clone https://github.com/openzfs/zfs
> cd ./zfs
> git checkout master
>
>
> Already on 'master'. Your branch is up to date with 'origin/master'.
>
>
> sh autogen.sh
>
> https://pastebin.ubuntu.com/p/bpcqTg3FRV/
>
>
> # sudo ./configure
>
> https://pastebin.ubuntu.com/p/r5RtFvqxvN/
>
>
> # sudo make -s -j$(nproc)
>
> https://pastebin.ubuntu.com/p/crZyh4xcZW/
>
>
> Unmount existing ZFS datasets and export pools:
>
>
> sudo zfs unmount -a
>
>
> The ZFS modules cannot be auto-loaded.
>
> Try running 'modprobe zfs' as root to manually load them
>
> modprobe: FATAL: Module zfs not found in directory /lib/modules/6.2.0-23-generic
>
>
> sudo zpool export -a
>
>
> The ZFS modules cannot be auto-loaded.
>
> Try running 'modprobe zfs' as root to manually load them.
>
>
> sudo systemctl stop zfs-send
>
>
> Failed to stop zfs-send.service: Unit zfs-send.service not loaded.
>
> Unload existing ZFS modules:
>
>
> sudo ./scripts/zfs.sh -u = OK
>
>
> Install newly compiled ZFS:
>
>
> sudo make install
>
> https://pastebin.ubuntu.com/p/ztYb89g8KQ/
>
> sudo ldconfig = OK
> sudo depmod
>
>
> depmod: ERROR: could not open directory /lib/modules/6.2.0-23-generic: No such file or directory
>
> Load freshly built Linux modules:
>
>
> sudo ./scripts/zfs.sh = OK
>
>
> Failed to load /home/ziomario/Scaricati/zfs/module/zfs.ko
>
> And make sure that ZFS services are enabled:
>
>
> sudo systemctl enable zfs.target zfs-import.target zfs-mount.service zfs-import-cache.service zfs-import-scan.service
>
>
> Synchronizing state of zfs-mount.service with SysV service script with /lib/systemd/systemd-sysv-install.
>
> Executing: /lib/systemd/systemd-sysv-install enable zfs-mount
>
>
> zpool import -f -R /mnt/zroot2 zroot2
>
>
> The ZFS modules cannot be auto-loaded.
>
> Try running 'modprobe zfs' as root to manually load them.
>
>
> # sudo modprobe zfs
>
>
> modprobe: FATAL: Module zfs not found in directory /lib/modules/6.2.0-23-generic
>
>
> how to fix it ? very thanks.

This is not something I have experience with, so take it with a grain
of salt... I would consider the DKMS option so the kernel module gets
updated with each kernel update.

Arch usually has really good documentation. Take a look at
https://wiki.archlinux.org/title/ZFS . It looks like you may need to
perform gyrations for the cache in later versions of OpenZFS. It does
not look like (to me) the Uptrace article talks about it.

Jeff