Longterm fedora kernel depends on different kernel-devel package

[niclimcy]

System information

Type	Version/Name
Distribution Name	Fedora
Distribution Version	40
Kernel Version	6.6.59-200.fc40.x86_64
Architecture	x86_64
OpenZFS Version	2.2.6

Describe the problem you're observing

rpm spec.in defines kernel-devel as required package: https://github.com/openzfs/zfs/blob/master/rpm/generic/zfs-dkms.spec.in#L33

However, relying on a longterm kernel package, the kernel-devel package name has a different name, kernel-longterm-devel.

Describe how to reproduce the problem

1. Install kernel-longterm as per https://copr.fedorainfracloud.org/coprs/kwizart/kernel-longterm-6.6/
2. Remove kernel-devel (as this tracks rolling release unsupported kernel)
3. zfs and zfs-dkms are forced to uninstall

Include any warning/errors/backtraces from the system logs

niclim@fedora ~$ sudo dnf remove kernel-devel
Dependencies resolved.
===============================================================================================================================================================================
 Package                                   Architecture                        Version                                        Repository                                  Size
===============================================================================================================================================================================
Removing:
 kernel-devel                              x86_64                              6.10.3-200.fc40                                @@commandline                               71 M
 kernel-devel                              x86_64                              6.11.6-200.fc40                                @updates                                    75 M
Removing dependent packages:
 zfs                                       x86_64                              2.2.6-1.fc40                                   @@System                                   1.8 M
 zfs-dkms                                  noarch                              2.2.6-1.fc40                                   @@System                                    57 M

Transaction Summary
===============================================================================================================================================================================
Remove  4 Packages

Freed space: 206 M
Is this ok [y/N]:

[JMOdero]

Different circumstances but similar issue reported HERE.

I'm using Fedora Linux Asahi Remix 40 (Server Edition) with kernel Linux 6.12.1-404.asahi.fc40.aarch64+16k bare metal on an M1 mac mini.

Apple silicon macs use 16k pages so they use kernel-16k-devel instead of kernel-devel. A work around for ZFS 2.2.7-1 is posted HERE.

There needs to be a way for the the distro type to be recognized and the appropriate kernel-devel nomenclature to be selected. Or maybe it can be user selected somehow... other than a manual find/replace in various files.

[AllKind]

I'm no fedora user, but reading this: https://rpm-software-management.github.io/rpm/manual/boolean_dependencies.html

Something like this using boolean operators should in theory work:

Requires:      ((kernel-devel >= @ZFS_META_KVER_MIN@, kernel-devel <= @[email protected]) or (kernel-longerm-devel >= @ZFS_META_KVER_MIN@, kernel-longterm-devel <= @[email protected]))
Requires(post): ((kernel-devel >= @ZFS_META_KVER_MIN@, kernel-devel <= @[email protected]) or (kernel-longerm-devel >= @ZFS_META_KVER_MIN@, kernel-longterm-devel <= @[email protected]))
Conflicts:      ((kernel-devel < @ZFS_META_KVER_MIN@, kernel-devel > @[email protected]) or (kernel-longterm-devel < @ZFS_META_KVER_MIN@, kernel-longterm-devel > @[email protected]))

[JMOdero]

I'm no fedora user, but reading this: https://rpm-software-management.github.io/rpm/manual/boolean_dependencies.html

Something like this using boolean operators should in theory work:

Requires:      ((kernel-devel >= @ZFS_META_KVER_MIN@, kernel-devel <= @[email protected]) or (kernel-longerm-devel >= @ZFS_META_KVER_MIN@, kernel-longterm-devel <= @[email protected]))
Requires(post): ((kernel-devel >= @ZFS_META_KVER_MIN@, kernel-devel <= @[email protected]) or (kernel-longerm-devel >= @ZFS_META_KVER_MIN@, kernel-longterm-devel <= @[email protected]))
Conflicts:      ((kernel-devel < @ZFS_META_KVER_MIN@, kernel-devel > @[email protected]) or (kernel-longterm-devel < @ZFS_META_KVER_MIN@, kernel-longterm-devel > @[email protected]))

I don't think all those parenthesis will work...
error: line 33: Unknown rich dependency op 'kernel-devel': Requires: ((kernel-devel >= 4.18, kernel-devel <= 6.12.999) or (kernel-16k-devel >= 4.18, kernel-16k-devel <= 6.12.999))

I went with this...
kernel-devel >= @ZFS_META_KVER_MIN@, kernel-devel <= @[email protected] or kernel-16k-devel >= @ZFS_META_KVER_MIN@, kernel-16k-devel <= @[email protected]

The compiler was happier...

Processing files: zfs-dkms-2.2.7-1.fc40.noarch
Provides: zfs-dkms = 2.2.7-1.fc40 zfs-kmod = 2.2.7
Requires(interp): /bin/sh /bin/sh /bin/sh
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires(pre): /bin/sh dkms >= 2.2.0.3
Requires(post): /bin/sh diffutils dkms >= 2.2.0.3 gcc kernel-16k-devel >= 4.18 kernel-16k-devel <= 6.12.999 kernel-devel >= 4.18 kernel-devel <= 6.12.999 make or perl
Requires(preun): /bin/sh dkms >= 2.2.0.3
Obsoletes: spl-dkms <= 2.2.7

Unfortunately I already have 2.2.7 installed and I don't think you can run Asahi Linux in a vm, so I will have to wait for the next zfs release to test this out fully. Thanks for the nudge in what I hope is the right direction.

[JMOdero]

Unfortunately I tested the two boolean instructions that were discussed, and I couldn't install either. The only thing that worked was changing kernel-devel to kernel-16k-devel in all the spec files. Everything worked once I did that. I didn't have to do anything else.

I don't know. There seems like there is something there with the boolean operation. I just need to figure out the right syntax.

niclimcy have you tried going into the "rpm" directory and replacing "kernel-devel" with "kernel-longterm-devel" in all the .spec files? It's clumsy, but I think you may like the result. Try it and let us know.

Download the tarball. Open/expand it, and edit the .spec files. Then .configure. Then compile and install. It worked for my 16k page file issue.

[niclimcy]

Unfortunately I tested the two boolean instructions that were discussed, and I couldn't install either. The only thing that worked was changing kernel-devel to kernel-16k-devel in all the spec files. Everything worked once I did that. I didn't have to do anything else.

I don't know. There seems like there is something there with the boolean operation. I just need to figure out the right syntax.

niclimcy have you tried going into the "rpm" directory and replacing "kernel-devel" with "kernel-longterm-devel" in all the .spec files? It's clumsy, but I think you may like the result. Try it and let us know.

Download the tarball. Open/expand it, and edit the .spec files. Then .configure. Then compile and install. It worked for my 16k page file issue.

This is not a solution. It will definitely work but not a solution for all red hat systems.