1 files changed, 25 insertions, 0 deletions
diff --git a/mdadm_udev_install b/mdadm_udev_install
new file mode 100644
index 000000000000..64a0862c1d69
--- /dev/null
+++ b/mdadm_udev_install
@@ -0,0 +1,25 @@
+#!/bin/bash
+
+build() {
+    add_checked_modules -f 'dm-' 'drivers/md/*'
+
+    # check if a custom mdadm.conf exists
+    if grep -qw ^ARRAY "$BASEDIR/etc/mdadm.conf"; then
+        echo "Custom /etc/mdadm.conf file will be used in initramfs for assembling arrays."
+        add_file "/etc/mdadm.conf"
+    fi
+
+    map add_udev_rule \
+        '63-md-raid-arrays.rules' \
+        '64-md-raid-assembly.rules'
+}
+
+help() {
+  cat <<HELPEOF
+This hook loads the necessary modules for a RAID array and uses incremental
+assembly via udev at runtime to create the devices. This hook will NOT work
+without the udev hook included on the image.
+HELPEOF
+}
+
+# vim: set ft=sh ts=4 sw=4 et: