add module btrfs

modules.d/90btrfs/40-btrfs.rules

@@ -0,0 +1,7 @@
+SUBSYSTEM!="block", GOTO="btrfs_end"
+ACTION!="add|change", GOTO="btrfs_end"
+
+ENV{ID_FS_TYPE}=="btrfs", RUN+="/sbin/btrfs device scan $env{DEVNAME}"
+
+LABEL="btrfs_end"
+

modules.d/90btrfs/check

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+# We depend on udev-rules being loaded
+[ "$1" = "-d" ] && exit 0
+
+# if we don't have dmraid installed on the host system, no point
+# in trying to support it in the initramfs.
+which btrfs >/dev/null 2>&1 || exit 1
+
+exit 0

modules.d/90btrfs/install

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+inst_rules "$moddir/40-btrfs.rules"
+dracut_install btrfs

modules.d/95udev-rules/install

@@ -24,7 +24,7 @@ else
     inst_rules "$moddir/59-persistent-storage-volid.rules"
 fi
 inst_rules "$moddir/61-persistent-storage.rules"
-    
+
 for i in \
 ata_id \
 cdrom_id \