Debian has no prebuilt ZFS kmod (unlike Ubuntu's linux-modules or
RHEL's zfsonlinux kmod), so zfs-dkms compiles against the running
kernel. Using linux-headers-$(uname -r) pinned the compile to ONE
kernel: after a kernel upgrade the module was missing and needed a
manual dkms rebuild.
Install the version-less meta package linux-headers-amd64 instead: it
tracks the installed kernel, so /etc/kernel/postinst.d/dkms has the
matching headers at upgrade time and rebuilds the module automatically
before the next boot. The modprobe check stays: if the module is ever
absent for the running kernel (e.g. headers were missing during the
upgrade), 00-check rebuilds it on the spot instead of failing later at
pool creation.
Co-authored-by: CommandCodeBot <noreply@commandcode.ai>
