Hi all
I will suggest you guys to pin kernel to version 5.9 rather than upgrading to 5.10 when using ZFS
Debian team didn't decide to upgrade ZFS 2.0.x which support kernel 5.10.
For now, ZFS 0.8.6 only support up to kernel 5.9
And zfs-dkms 0.8.6 will not work at all with 5.10. (compilation fail)
Pin version until Debian upgrade or port to kernel 5.10