modprobe cannot find the zfs module on Debian 13

[aukthewolf]

System Information:
OS: Debian 13 Trixie
Kernel Version: Linux 6.12.43+deb13-amd64
Architecture: x86_64

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So I'm trying to install zfs on Debian 13, and while the packages install, modprobe cannot find the zfs module. The exact error I'm getting is:

modprobe: FATAL: Module zfs not found in directory /lib/modules/6.12.41+deb13-amd64

I've tried installing linux-headers-6.12.41+deb13-amd64 and zfs-initramfs, but neither of them work. Does anyone else know what's going on?

[robn]

Kernel Version: Linux 6.12.43+deb13-amd64

/lib/modules/6.12.41+deb13-amd64

These are not the same version.

uname -r will tell you what version of the kernel is running; that's the version modprobe will use to find the module dir.

If you've upgraded your kernel since, you'll need to reboot. Or, you'll need to rebuild OpenZFS for the older kernel.

[aukthewolf]

It spat out the same error after rebooting
(modprobe: FATAL: Module zfs not found in directory /lib/modules/6.12.43+deb13-amd64)

[robn]

Are you sure you have the module built then? Does find /lib/modules/$(uname -r) -name 'zfs.ko*' see it.

[aukthewolf]

So I tried replicating the error on a fresh install and it went smoothly. I suppose on the other install, it wasn't built for some reason. Tysm!