Matt W.

System Information Distribution: Debian (armbian) Kernel Version: 6.1.115-vendor-rk35xx OpenZFS Version: 2.3.5 The kernel module does load. # zfs -V zfs-2.3.5-2~bpo13+1 zfs-kmod-2.3.5-2~bpo13+1 # zfs version Failed to initialize the libzfs library. Note: To keep this post short, I only pasted the errors from the trace below. # strace zfs version prctl(PR_CAPBSET_READ, 0x30 /* CAP_??? */) = -1 EINVAL (Invalid argument) prctl(PR_CAPBSET_READ, CAP_CHECKPOINT_RESTORE) = 1 prctl(PR_CAPBSET_READ, 0x2c /* CAP_??? */) = -1 EINVAL (Invalid argument) prctl(PR_CAPBSET_READ, 0x2a /* CAP_??? */) = -1 EINVAL (Invalid argument) prctl(PR_CAPBSET_READ, 0x29 /* CAP_??? */) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "/dev/zfs", O_RDWR|O_EXCL|O_CLOEXEC) = -1 ENODEV (No such device) openat(AT_FDCWD, "/usr/share/locale/en_US.UTF-8/LC_MESSAGES/zfs-linux-user.mo", O_RDONLY) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/usr/share/locale/en_US.utf8/LC_MESSAGES/zfs-linux-user.mo", O_RDONLY) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/usr/share/locale/en_US/LC_MESSAGES/zfs-linux-user.mo", O_RDONLY) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/usr/share/locale/en.UTF-8/LC_MESSAGES/zfs-linux-user.mo", O_RDONLY) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/usr/share/locale/en.utf8/LC_MESSAGES/zfs-linux-user.mo", O_RDONLY) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/usr/share/locale/en/LC_MESSAGES/zfs-linux-user.mo", O_RDONLY) = -1 ENOENT (No such file or directory) write(2, "Failed to initialize the libzfs "..., 41Failed to initialize the libzfs library. ) = 41 exit_group(1) = ? +++ exited with 1 +++ The /dev/zfs file does exist # ll /dev/zfs crw-rw-rw- 1 root root 10, 249 Jan 9 16:48 /dev/zfs In addition the trace also contains the following, confirming the existence of the file faccessat(AT_FDCWD, "/dev/zfs", F_OK) = 0 zpool also has the same issue.