dracut.sh/dracut-functions.sh: handle root on non-block device

dracut-functions.sh

@@ -421,7 +421,9 @@ find_mp_fstype() {
 find_dev_fstype() {
     local _find_dev _fs
     _find_dev="$1"
-    [[ "$_find_dev" = /dev* ]] || _find_dev="/dev/block/$_find_dev"
+    if ! [[ "$_find_dev" = /dev* ]]; then
+        [[ -b "/dev/block/$_find_dev" ]] && _find_dev="/dev/block/$_find_dev"
+    fi
 
     if [[ $use_fstab != yes ]]; then
         findmnt -e -v -n -o 'FSTYPE' --source "$_find_dev" | { \

dracut.sh

@@ -871,7 +871,10 @@ if [[ $hostonly ]]; then
     do
         mp=$(readlink -f "$mp")
         mountpoint "$mp" >/dev/null 2>&1 || continue
-        _dev="$(readlink -f "/dev/block/$(find_block_device "$mp")")"
+        _dev=$(find_block_device "$mp")
+        _bdev=$(readlink -f "/dev/block/$dev")
+        [[ -b $_bdev ]] && _dev=$_bdev
+        push host_devs $_dev
         [[ "$_mp" == "/" ]] && root_dev="$_dev"
         push host_devs "$_dev"
     done