Fixes for Fedora; support Rocky Linux Live ISO

Signed-off-by: Maurice Zhou <jasper@apvc.uk>

docs/Getting Started/Arch Linux/Root on ZFS/1-preparation.rst

@@ -104,6 +104,24 @@ Preparation
 
     INST_VDEV=
 
+   This will create a single vdev with the topology of your choice.
+   It is also possible to manually create a pool with multiple vdevs, such as::
+
+    zpool create --options \
+          poolName \
+          mirror sda sdb \
+          raidz2 sdc ... \
+          raidz3 sde ... \
+          spare  sdf ...
+
+   Notice the cost of parity when using RAID-Z. See
+   `here <https://www.delphix.com/blog/delphix-engineering/zfs-raidz-stripe-width-or-how-i-learned-stop-worrying-and-love-raidz>`__
+   and `here <https://docs.google.com/spreadsheets/d/1tf4qx1aMJp8Lo_R6gpT689wTjHv6CGVElrPqTA0w_ZY/>`__.
+
+   Refer to `zpoolconcepts <https://openzfs.github.io/openzfs-docs/man/7/zpoolconcepts.7.html>`__
+   and `zpool-create <https://openzfs.github.io/openzfs-docs/man/8/zpool-create.8.html>`__
+   man pages for details.
+
 #. Set partition size:
 
    Set ESP size. ESP contains Live ISO for recovery,

docs/Getting Started/Arch Linux/Root on ZFS/3-system-configuration.rst

@@ -92,6 +92,10 @@ System Configuration
 
     arch-chroot /mnt passwd
 
+#. Generate host id::
+
+    zgenhostid -f -o /mnt/etc/hostid
+
 #. Ignore kernel updates::
 
     sed -i 's/#IgnorePkg/IgnorePkg/' /mnt/etc/pacman.conf

docs/Getting Started/Arch Linux/Root on ZFS/5-bootloader.rst

@@ -50,9 +50,6 @@ Install GRUB
 
     mkinitcpio -P
 
-#. When in doubt, install both legacy boot
-   and EFI.
-
 #. Create GRUB boot directory, in ESP and boot pool::
 
     mkdir -p /boot/efi/EFI/arch
@@ -61,6 +58,9 @@ Install GRUB
    Boot environment-specific configuration (kernel, etc)
    is stored in ``/boot/grub/grub.cfg``, enabling rollback.
 
+#. When in doubt, install both legacy boot
+   and EFI.
+
 #. If using legacy booting, install GRUB to every disk::
 
     for i in ${DISK[@]}; do

docs/Getting Started/Fedora/Root on ZFS/1-preparation.rst

@@ -43,7 +43,7 @@ Preparation
 
 #. Install helper script and partition tool::
 
-    dnf install -y arch-install-scripts gdisk
+    dnf install -y arch-install-scripts gdisk dosfstools
 
 #. Target Fedora version::
 
@@ -94,6 +94,24 @@ Preparation
 
     INST_VDEV=
 
+   This will create a single vdev with the topology of your choice.
+   It is also possible to manually create a pool with multiple vdevs, such as::
+
+    zpool create --options \
+          poolName \
+          mirror sda sdb \
+          raidz2 sdc ... \
+          raidz3 sde ... \
+          spare  sdf ...
+
+   Notice the cost of parity when using RAID-Z. See
+   `here <https://www.delphix.com/blog/delphix-engineering/zfs-raidz-stripe-width-or-how-i-learned-stop-worrying-and-love-raidz>`__
+   and `here <https://docs.google.com/spreadsheets/d/1tf4qx1aMJp8Lo_R6gpT689wTjHv6CGVElrPqTA0w_ZY/>`__.
+
+   Refer to `zpoolconcepts <https://openzfs.github.io/openzfs-docs/man/7/zpoolconcepts.7.html>`__
+   and `zpool-create <https://openzfs.github.io/openzfs-docs/man/8/zpool-create.8.html>`__
+   man pages for details.
+
 #. Set partition size:
 
    Set ESP size::

docs/Getting Started/Fedora/Root on ZFS/3-system-configuration.rst

@@ -81,6 +81,10 @@ System Configuration
 
    ``systemd-firstboot`` have bugs, root password is set below.
 
+#. Generate host id::
+
+    zgenhostid -f -o /mnt/etc/hostid
+
 #. Install locale package, example for English locale::
 
     dnf --installroot=/mnt install -y glibc-minimal-langpack glibc-langpack-en
@@ -95,6 +99,7 @@ System Configuration
    disable SSH server::
 
     systemctl disable sshd --root=/mnt
+    systemctl enable firewalld --root=/mnt
 
 #. Chroot::
 
@@ -102,16 +107,16 @@ System Configuration
     INST_LINVAR=$INST_LINVAR
     INST_UUID=$INST_UUID
     INST_ID=$INST_ID
+    unalias -a
     INST_VDEV=$INST_VDEV" > /mnt/root/chroot
     echo DISK=\($(for i in ${DISK[@]}; do printf "$i "; done)\) >> /mnt/root/chroot
     arch-chroot /mnt bash --login
-    unalias -a
 
 #. Source variables::
 
     source /root/chroot
 
-#. Relabel filesystem on next boot::
+#. For SELinux, relabel filesystem on next boot::
 
     fixfiles -F onboot
 

docs/Getting Started/Fedora/Root on ZFS/5-bootloader.rst

@@ -54,9 +54,6 @@ Install GRUB
       dracut --force --kver $kernel_version
       done
 
-#. When in doubt, install both legacy boot
-   and EFI.
-
 #. Disable BLS::
 
     echo "GRUB_ENABLE_BLSCFG=false" >> /etc/default/grub
@@ -70,6 +67,9 @@ Install GRUB
    Boot environment-specific configuration (kernel, etc)
    is stored in ``/boot/grub2/grub.cfg``, enabling rollback.
 
+#. When in doubt, install both legacy boot
+   and EFI.
+
 #. If using legacy booting, install GRUB to every disk::
 
     for i in ${DISK[@]}; do
@@ -93,6 +93,7 @@ Install GRUB
 #. For both legacy and EFI booting: mirror ESP content::
 
     ESP_MIRROR=$(mktemp -d)
+    unalias -a
     cp -r /boot/efi/EFI $ESP_MIRROR
     for i in /boot/efis/*; do
      cp -r $ESP_MIRROR/EFI $i

docs/Getting Started/Fedora/Root on ZFS/6-recovery.rst

@@ -21,13 +21,14 @@ This section is also applicable if you are in
 #. On another computer, generate rescue image with::
 
      pacman -S --needed mtools libisoburn grub
+     grub-install
      grub-mkrescue -o grub-rescue.img
      dd if=grub-rescue.img of=/dev/your-usb-stick
 
    Boot computer from the rescue media.
    Both legacy and EFI mode are supported.
 
-   Skip this step if you are in GRUB rescue.
+   Or `download generated GRUB rescue image <https://gitlab.com/m_zhou/bieaz/uploads/4a1b7cefb42723de6eb04f9dc485be3b/grub-rescue.img.7z>`__.
 
 #. List available disks with ``ls`` command::
 
@@ -36,20 +37,6 @@ This section is also applicable if you are in
 
      hd0 hd1 hd2 hd3
 
-   If you are dropped to GRUB rescue instead of
-   booting from GRUB rescue image, boot disk can be found
-   out with::
-
-    echo $root
-    # cryto0
-    # hd0,gpt2
-
-   GRUB configuration is loaded from::
-
-    echo $prefix
-    # (crypto0)/sys/BOOT/default@/grub
-    # (hd0,gpt2)/sys/BOOT/default@/grub
-
 #. List partitions by pressing tab key:
 
    .. code-block:: text
@@ -94,12 +81,10 @@ This section is also applicable if you are in
      grub> ls (crypto0)/sys/BOOT
      @/ default/ be0/
 
-#. Instruct GRUB to load configuration from ``be0`` boot environment
+#. Instruct GRUB to load configuration from ``be0`` boot environment::
-   then enter normal mode::
 
      grub> prefix=(crypto0)/sys/BOOT/be0/@/grub
-     grub> insmod normal
+     grub> configfile $prefix/grub.cfg
-     grub> normal
 
 #. GRUB menu should now appear.
 
@@ -188,7 +173,7 @@ Access system in chroot
 
 #. chroot into the system::
 
-     fedora-chroot /mnt /bin/bash --login
+     arch-chroot /mnt /bin/bash --login
      zfs mount -a
      mount -a
 
@@ -202,21 +187,21 @@ it is relatively easy to perform a system backup and migration.
 
 #. Create a snapshot of root file system::
 
-    zfs snapshot -r rpool/fedora@backup
+    zfs snapshot -r rpool/arch@backup
-    zfs snapshot -r bpool/fedora@backup
+    zfs snapshot -r bpool/arch@backup
 
 #. Save snapshot to a file or pipe to SSH::
 
-    zfs send --options rpool/fedora@backup > /backup/fedora-rpool
+    zfs send --options rpool/arch@backup > /backup/arch-rpool
-    zfs send --options bpool/fedora@backup > /backup/fedora-bpool
+    zfs send --options bpool/arch@backup > /backup/arch-bpool
 
 #. Re-create partitions and root/boot
    pool on target system.
 
 #. Restore backup::
 
-    zfs recv rpool_new/fedora < /backup/fedora-rpool
+    zfs recv rpool_new/arch < /backup/arch-rpool
-    zfs recv bpool_new/fedora < /backup/fedora-bpool
+    zfs recv bpool_new/arch < /backup/arch-bpool
 
 #. Chroot and reinstall bootloader.
 

docs/Getting Started/Fedora/index.rst

@@ -34,9 +34,18 @@ see below.
 
     dnf copr enable -y kwizart/kernel-longterm-5.4
     dnf install -y kernel-longterm kernel-longterm-devel
-    # reboot to new LTS kernel
+
+   Reboot to new LTS kernel, then load kernel module::
+
     modprobe zfs
 
+   It might be necessary to rebuild module::
+
+    ls -1 /lib/modules \
+    | while read kernel_version; do
+      dkms autoinstall -k $kernel_version
+    done
+
 #. By default ZFS kernel modules are loaded upon detecting a pool.
    To always load the modules at boot::
 

docs/Getting Started/RHEL-based distro/RHEL 8-based distro Root on ZFS.rst

@@ -1,4 +1,4 @@
-RHEL 8-based distro Root on ZFS
+Rocky Linux 8 Root on ZFS
 =======================================
 `Start here <RHEL%208-based%20distro%20Root%20on%20ZFS/0-overview.html>`__.
 

docs/Getting Started/RHEL-based distro/RHEL 8-based distro Root on ZFS/1-preparation.rst

@@ -6,15 +6,15 @@ Preparation
 .. contents:: Table of Contents
    :local:
 
-#. Download a variant of Fedora 34 live image
+#. Download a variant of `Rocky Linux 8.4 Live
-   such as LXDE spin and boot from it.
+   ISO <https://dl.rockylinux.org/pub/rocky/8.4/Live/x86_64/>`__ and boot from it.
 
 #. Disable Secure Boot. ZFS modules can not be loaded of Secure Boot is enabled.
 #. Set root password or ``/root/authorized_keys``.
 #. Start SSH server::
 
     echo PermitRootLogin yes >> /etc/ssh/sshd_config
-    systemctl start sshd
+    systemctl restart sshd
 
 #. Connect from another computer::
 
@@ -24,17 +24,17 @@ Preparation
 
     setenforce 0
 
-#. Install ``kernel-devel``::
-
-    source /etc/os-release
-    dnf install -y https://dl.fedoraproject.org/pub/fedora/linux/releases/${VERSION_ID}/Everything/x86_64/os/Packages/k/kernel-devel-$(uname -r).rpm
-
 #. Add ZFS repo::
 
-    dnf install -y https://zfsonlinux.org/fedora/zfs-release.fc${VERSION_ID}.noarch.rpm
+    source /etc/os-release
+    RHEL_ZFS_REPO=https://zfsonlinux.org/epel/zfs-release.el${VERSION_ID/./_}.noarch.rpm
+    dnf install -y $RHEL_ZFS_REPO
 
 #. Install ZFS packages::
 
+    dnf config-manager --disable zfs
+    dnf config-manager --enable zfs-kmod
+    dnf install -y epel-release
     dnf install -y zfs
 
 #. Load kernel modules::
@@ -43,24 +43,13 @@ Preparation
 
 #. Install helper script and partition tool::
 
-    dnf install -y arch-install-scripts gdisk
+    rpm -ivh --nodeps https://dl.fedoraproject.org/pub/fedora/linux/releases/34/Everything/x86_64/os/Packages/a/arch-install-scripts-23-3.fc34.noarch.rpm
+    dnf install -y gdisk dosfstools
 
 #. Set RHEL version::
 
     INST_RHEL_VER=8
 
-#. Remove Fedora repo and install target distro repo, zfs repo::
-
-    rpm -qa | grep -E ^fedora | xargs -i{} rpm -e --nodeps {}
-    rpm -e zfs-release
-    ROCKY_REPO=https://dl.rockylinux.org/pub/rocky/8.4/BaseOS/x86_64/os/Packages/
-    rpm -ivh \
-      ${ROCKY_REPO}rocky-gpg-keys-8.4-26.el8.noarch.rpm \
-      ${ROCKY_REPO}rocky-release-8.4-26.el8.noarch.rpm \
-      ${ROCKY_REPO}rocky-repos-8.4-26.el8.noarch.rpm
-    RHEL_ZFS_REPO=https://zfsonlinux.org/epel/zfs-release.el8_4.noarch.rpm
-    dnf install -y ${RHEL_ZFS_REPO} epel-release
-
 #. Unique pool suffix. ZFS expects pool names to be
    unique, therefore it's recommended to create
    pools with a unique suffix::
@@ -89,7 +78,7 @@ Preparation
     DISK=(/dev/disk/by-id/disk1)
 
 #. Choose a primary disk. This disk will be used
-   for primary EFI partition and hibernation, default to
+   for primary EFI partition, default to
    first disk in the array::
 
     INST_PRIMARY_DISK=${DISK[0]}
@@ -106,6 +95,24 @@ Preparation
 
     INST_VDEV=
 
+   This will create a single vdev with the topology of your choice.
+   It is also possible to manually create a pool with multiple vdevs, such as::
+
+    zpool create --options \
+          poolName \
+          mirror sda sdb \
+          raidz2 sdc ... \
+          raidz3 sde ... \
+          spare  sdf ...
+
+   Notice the cost of parity when using RAID-Z. See
+   `here <https://www.delphix.com/blog/delphix-engineering/zfs-raidz-stripe-width-or-how-i-learned-stop-worrying-and-love-raidz>`__
+   and `here <https://docs.google.com/spreadsheets/d/1tf4qx1aMJp8Lo_R6gpT689wTjHv6CGVElrPqTA0w_ZY/>`__.
+
+   Refer to `zpoolconcepts <https://openzfs.github.io/openzfs-docs/man/7/zpoolconcepts.7.html>`__
+   and `zpool-create <https://openzfs.github.io/openzfs-docs/man/8/zpool-create.8.html>`__
+   man pages for details.
+
 #. Set partition size:
 
    Set ESP size::

docs/Getting Started/RHEL-based distro/RHEL 8-based distro Root on ZFS/2-system-installation.rst

@@ -70,25 +70,12 @@ System Installation
 #. Create root pool::
 
        zpool create \
-           -d \
-           -o feature@empty_bpobj=enabled \
-           -o feature@lz4_compress=enabled \
-           -o feature@spacemap_histogram=enabled \
-           -o feature@enabled_txg=enabled \
-           -o feature@hole_birth=enabled \
-           -o feature@extensible_dataset=enabled \
-           -o feature@embedded_data=enabled \
-           -o feature@large_dnode=enabled \
-           -o feature@userobj_accounting=enabled \
-           -o feature@encryption=enabled \
-           -o feature@project_quota=enabled \
-           -o feature@spacemap_v2=enabled \
            -o ashift=12 \
            -o autotrim=on \
            -R /mnt \
            -O acltype=posixacl \
            -O canmount=off \
-           -O compression=lz4 \
+           -O compression=zstd \
            -O dnodesize=auto \
            -O normalization=formD \
            -O relatime=on \
@@ -232,15 +219,16 @@ System Installation
 
 #. Install base packages::
 
-    dnf --installroot=/mnt --releasever=${INST_RHEL_VER} -y install dnf
+    dnf --installroot=/mnt --releasever=${INST_RHEL_VER} -y install \
+    ${RHEL_ZFS_REPO} @core epel-release grub2-efi-x64 grub2-pc-modules grub2-efi-x64-modules shim-x64 efibootmgr
+    dnf config-manager --installroot=/mnt --disable zfs
+    dnf config-manager --installroot=/mnt --enable zfs-kmod
+    dnf install --installroot=/mnt -y zfs zfs-dracut
 
-#. Install bootloader, kernel and ZFS::
+   If speed is slow, you can manually pick a fixed mirror
+   from `mirrorlist <https://mirrors.rockylinux.org/mirrormanager/mirrors>`__
+   and apply it::
 
-    cp /etc/resolv.conf /mnt/etc
+    sed -i 's|^mirrorlist=|#mirrorlist=|g' /etc/yum.repos.d/*
-    arch-chroot /mnt bash --login <<EOF
+    sed -i 's|^#baseurl=|baseurl=|g' /etc/yum.repos.d/*
-    dnf --releasever=${INST_RHEL_VER} -y install ${RHEL_ZFS_REPO} \
+    sed -i 's|dl.rockylinux.org/$contentdir|mirrors.sjtug.sjtu.edu.cn/rocky|g' /etc/yum.repos.d/*
-    @core epel-release \
-    grub2-efi-x64 grub2-pc-modules grub2-efi-x64-modules shim-x64 efibootmgr \
-    kernel kernel-devel
-    dnf --releasever=${INST_RHEL_VER} -y install zfs zfs-dracut
-    EOF

docs/Getting Started/RHEL-based distro/RHEL 8-based distro Root on ZFS/3-system-configuration.rst

@@ -46,18 +46,22 @@ System Configuration
 #. Interactively set locale, keymap, timezone, hostname and root password::
 
     rm -f /mnt/etc/localtime
-    systemd-firstboot --root=/mnt --force --prompt --root-password=PASSWORD
+    systemd-firstboot --root=/mnt --prompt --root-password=PASSWORD
 
    This can be non-interactive, see man page for details::
 
     rm -f /mnt/etc/localtime
-    systemd-firstboot --root=/mnt --force \
+    systemd-firstboot --root=/mnt \
      --locale="en_US.UTF-8" --locale-messages="en_US.UTF-8" \
      --keymap=us --timezone="Europe/Berlin" --hostname=myHost \
-     --root-password=PASSWORD --root-shell=/bin/bash
+     --root-password=PASSWORD
 
    ``systemd-firstboot`` have bugs, root password is set below.
 
+#. Generate host id::
+
+    zgenhostid -f -o /mnt/etc/hostid
+
 #. Install locale package, example for English locale::
 
     dnf --installroot=/mnt install -y glibc-minimal-langpack glibc-langpack-en
@@ -72,6 +76,7 @@ System Configuration
    disable SSH server::
 
     systemctl disable sshd --root=/mnt
+    systemctl enable firewalld --root=/mnt
 
 #. Chroot::
 
@@ -79,27 +84,20 @@ System Configuration
     INST_LINVAR=$INST_LINVAR
     INST_UUID=$INST_UUID
     INST_ID=$INST_ID
+    unalias -a
     INST_VDEV=$INST_VDEV
     TERM=xterm" > /mnt/root/chroot
     echo DISK=\($(for i in ${DISK[@]}; do printf "$i "; done)\) >> /mnt/root/chroot
     arch-chroot /mnt bash --login
-    unalias -a
 
 #. Source variables::
 
     source /root/chroot
 
-#. Relabel filesystem on reboot::
+#. For SELinux, relabel filesystem on reboot::
 
     fixfiles -F onboot
 
 #. Set root password::
 
     passwd
-
-#. Build modules::
-
-    ls -1 /lib/modules \
-    | while read kernel_version; do
-      dkms autoinstall -k $kernel_version
-      done

docs/Getting Started/RHEL-based distro/RHEL 8-based distro Root on ZFS/5-bootloader.rst

@@ -54,9 +54,6 @@ Install GRUB
       dracut --force --kver $kernel_version
       done
 
-#. When in doubt, install both legacy boot
-   and EFI.
-
 #. Load ZFS modules and disable BLS::
 
     echo 'GRUB_ENABLE_BLSCFG=false' >> /etc/default/grub
@@ -70,6 +67,9 @@ Install GRUB
    Boot environment-specific configuration (kernel, etc)
    is stored in ``/boot/grub2/grub.cfg``, enabling rollback.
 
+#. When in doubt, install both legacy boot
+   and EFI.
+
 #. If using legacy booting, install GRUB to every disk::
 
     for i in ${DISK[@]}; do
@@ -104,6 +104,7 @@ Install GRUB
 #. For both legacy and EFI booting: mirror ESP content::
 
     ESP_MIRROR=$(mktemp -d)
+    unalias -a
     cp -r /boot/efi/EFI $ESP_MIRROR
     for i in /boot/efis/*; do
      cp -r $ESP_MIRROR/EFI $i

docs/Getting Started/RHEL-based distro/RHEL 8-based distro Root on ZFS/6-recovery.rst

@@ -21,13 +21,14 @@ This section is also applicable if you are in
 #. On another computer, generate rescue image with::
 
      pacman -S --needed mtools libisoburn grub
+     grub-install
      grub-mkrescue -o grub-rescue.img
      dd if=grub-rescue.img of=/dev/your-usb-stick
 
    Boot computer from the rescue media.
    Both legacy and EFI mode are supported.
 
-   Skip this step if you are in GRUB rescue.
+   Or `download generated GRUB rescue image <https://gitlab.com/m_zhou/bieaz/uploads/4a1b7cefb42723de6eb04f9dc485be3b/grub-rescue.img.7z>`__.
 
 #. List available disks with ``ls`` command::
 
@@ -36,20 +37,6 @@ This section is also applicable if you are in
 
      hd0 hd1 hd2 hd3
 
-   If you are dropped to GRUB rescue instead of
-   booting from GRUB rescue image, boot disk can be found
-   out with::
-
-    echo $root
-    # cryto0
-    # hd0,gpt2
-
-   GRUB configuration is loaded from::
-
-    echo $prefix
-    # (crypto0)/sys/BOOT/default@/grub
-    # (hd0,gpt2)/sys/BOOT/default@/grub
-
 #. List partitions by pressing tab key:
 
    .. code-block:: text
@@ -94,12 +81,10 @@ This section is also applicable if you are in
      grub> ls (crypto0)/sys/BOOT
      @/ default/ be0/
 
-#. Instruct GRUB to load configuration from ``be0`` boot environment
+#. Instruct GRUB to load configuration from ``be0`` boot environment::
-   then enter normal mode::
 
      grub> prefix=(crypto0)/sys/BOOT/be0/@/grub
-     grub> insmod normal
+     grub> configfile $prefix/grub.cfg
-     grub> normal
 
 #. GRUB menu should now appear.
 
@@ -188,7 +173,7 @@ Access system in chroot
 
 #. chroot into the system::
 
-     rhel-chroot /mnt /bin/bash --login
+     arch-chroot /mnt /bin/bash --login
      zfs mount -a
      mount -a
 
@@ -202,21 +187,21 @@ it is relatively easy to perform a system backup and migration.
 
 #. Create a snapshot of root file system::
 
-    zfs snapshot -r rpool/rhel@backup
+    zfs snapshot -r rpool/arch@backup
-    zfs snapshot -r bpool/rhel@backup
+    zfs snapshot -r bpool/arch@backup
 
 #. Save snapshot to a file or pipe to SSH::
 
-    zfs send --options rpool/rhel@backup > /backup/rhel-rpool
+    zfs send --options rpool/arch@backup > /backup/arch-rpool
-    zfs send --options bpool/rhel@backup > /backup/rhel-bpool
+    zfs send --options bpool/arch@backup > /backup/arch-bpool
 
 #. Re-create partitions and root/boot
    pool on target system.
 
 #. Restore backup::
 
-    zfs recv rpool_new/rhel < /backup/rhel-rpool
+    zfs recv rpool_new/arch < /backup/arch-rpool
-    zfs recv bpool_new/rhel < /backup/rhel-bpool
+    zfs recv bpool_new/arch < /backup/arch-bpool
 
 #. Chroot and reinstall bootloader.
 

docs/Getting Started/RHEL-based distro/index.rst

@@ -42,7 +42,8 @@ For RHEL/CentOS versions 6 and 7 run::
 
 And for RHEL/CentOS 8 and newer::
 
- dnf install https://zfsonlinux.org/epel/zfs-release$(rpm -E %distro).noarch.rpm
+ source /etc/os-release
+ dnf install https://zfsonlinux.org/epel/zfs-release.el${VERSION_ID/./_}.noarch.rpm
  rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-zfsonlinux
 
 After installing the *zfs-release* package and verifying the public key