I'd like to use zfs with my Fedora 20 system.

I've installed the ZFS on Linux Fedora repository and subsequently the kernel-devel and zfs package. As far as I can tell, everything was installed successfully and I also rebooted the system. Nonetheless, sudo zpool create outputs errors:

Failed to load ZFS module stack.
Load the module manually by running 'insmod <location>/zfs.ko' as root.

Modprobe will also not load the module:

$ sudo modprobe zfs
modprobe: ERROR: could not insert 'zfs': Required key not available.

insmod with either of the two locations of zfs.ko I found on my system yields the same error:

$ sudo insmod /usr/lib/modules/3.16.3-200.fc20.x86_64/extra/zfs.ko
insmod: ERROR: could not insert module /usr/lib/modules/3.16.3-200.fc20.x86_64/extra/zfs.ko: Required key not available
$ sudo insmod /var/lib/dkms/zfs/0.6.3/3.16.3-200.fc20.x86_64/x86_64/module/zfs.ko
insmod: ERROR: could not insert module /var/lib/dkms/zfs/0.6.3/3.16.3-200.fc20.x86_64/x86_64/module/zfs.ko: Required key not available

I'm booting with UEFI, having SecureBoot enabled.

I guess the kernel will only load modules that are signed with some trusted keys, probably those of the Fedora kernel team. For example usb-storage apparently has such a signature:

$ modinfo usb-storage | grep '^sig'
signer:         Fedora kernel signing key
sig_key:        55:46:C1:1D:28:CF:EC:0B:46:B1:C1:F1:93:0D:6B:F3:EC:63:B0:67
sig_hashalgo:   sha256 

What can I do to get ZFS running?

Edit: I've tried to disable Secure Boot and I could in fact load the module without a problem. I don't like it as a solution, as Secure Boot does provides some additional protection and my BIOS/UEFI delays my boot process to tell me it was booting insecurely.

  • 2
    Your on the right track your module need to be signed, but this will probably never happens, so the only solution I see is to disable secureboot Oct 8, 2014 at 6:08
  • Can you check output of following command ? - cat /proc/keys (This will list the keys registered in your system) - dmesg | grep -i "Loaded x.509" It might be the case that probably the module signing verification failed for zfs. I think that your dmesg or syslogs will be having errors like : "Request for unknown module key"
    – shubham
    Dec 15, 2015 at 8:33

1 Answer 1


Turn off secure boot, or sign the ZFS and SPL modules.


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