Move long code pieces to separate files

Formatting fixes
separate files

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

docs/Getting Started/Arch Linux/3-live.rst

@@ -0,0 +1,49 @@
+.. highlight:: sh
+
+Live image
+============
+
+Latest live image might contain a kernel incompatible with
+ZFS. Check the compatibility with the following procedure.
+
+#. Choose a mirror::
+
+    https://archlinux.org/mirrorlist/all/
+    https://gitea.artixlinux.org/packagesA/artix-mirrorlist/src/branch/master/trunk/mirrorlist
+
+#. Check the build date of the
+   latest Arch Linux live image::
+
+    https://mirrors.dotsrc.org/archlinux/iso/latest/
+    https://mirrors.dotsrc.org/artix-linux/iso/
+    # archlinux-2021.01.01-x86_64.iso
+
+#. Check the kernel version of the live image::
+
+    https://archive.archlinux.org/repos/2021/01/01/core/os/x86_64
+    https://archive.artixlinux.org/repos/2021/01/01/system/os/x86_64
+    # linux-5.10.3.arch1-1-x86_64.pkg.tar.zst
+
+#. Check latest zfs-dkms package version::
+
+    https://archzfs.com/archzfs/x86_64/
+    # zfs-dkms-2.0.1-1-x86_64.pkg.tar.zst
+    # zfs-linux-2.0.1_5.10.10.arch1.1-1-x86_64.pkg.tar.zst
+
+#. Visit OpenZFS release page::
+
+    curl -L https://github.com/openzfs/zfs/raw/zfs-2.0.1/META \
+    | grep Linux
+    # Linux-Maximum: 5.10
+    # Linux-Minimum: 3.10
+
+   - If compatible, download the latest live image::
+
+      https://mirrors.dotsrc.org/archlinux/iso/latest/archlinux-2021.01.01-x86_64.iso
+      https://mirrors.dotsrc.org/artix-linux/iso/artix-base-openrc-20210101-x86_64.iso
+
+   - If not compatible, use an older live image and verify that it contains
+     a supported kernel using the above method::
+
+      https://mirrors.dotsrc.org/archlinux/iso/
+      https://iso.artixlinux.org/archived-isos.php