Make proper names for developing boot enties.

2 files changed, 14 insertions, 5 deletions

diff --git a/builder/dnbd3-rootfs/hooks/prepare-root-partition.sh b/builder/dnbd3-rootfs/hooks/prepare-root-partition.sh
index ffa7fbcf..70da2064 100755
--- a/builder/dnbd3-rootfs/hooks/prepare-root-partition.sh
+++ b/builder/dnbd3-rootfs/hooks/prepare-root-partition.sh
@@ -41,14 +41,23 @@ else
     if [ "$ramdisk_size" = "" ]; then
         ramdisk_size="$(cat /proc/meminfo | awk '/MemTotal/ {print $2}')"
     fi
-    ! rmmod brd 2>/dev/null
-    modprobe brd max_part=1 rd_size="$ramdisk_size"
-    writable_device='/dev/ram0'
+    # NOTE: If the kernel modul "brd" is compiled into current kernel we can't
+    # configure ram disk size dynamically. In this case it have to be
+    # configured via kernel command line: "brd.rd_size=SITE_IN_KILOBYTE"
+    # statically:
+    #! rmmod brd 2>/dev/null
+    #modprobe brd max_part=1 rd_size="$ramdisk_size"
+    #writable_device='/dev/ram0'
+    ramdisk_location="$(mktemp)"
+    dd of="$ramdisk_location" seek="$ramdisk_size" count=0
+    writable_device="$(losetup --find)"
+    losetup "$writable_device" "$ramdisk_location"
+    #
     persistent='N'
 fi
 
 # persistent storage on a filesystem (e.g. usb stick)
-# writable_device="$(losetup -f)"
+# writable_device="$(losetup --find)"
 #dd if=/dev/zero of=persistent_storage.img bs=1k count=1000
 #losetup "$writable_device" persistent_storage.img
 #persistent='P'
diff --git a/builder/dnbd3-rootfs/module-setup.sh b/builder/dnbd3-rootfs/module-setup.sh
index dcc96766..9b931c44 100755
--- a/builder/dnbd3-rootfs/module-setup.sh
+++ b/builder/dnbd3-rootfs/module-setup.sh
@@ -198,7 +198,7 @@ install() {
     # Production:
     # inst_multiple insmod blockdev partx dmsetup sed cat cut awk tr touch \
     #     losetup grep basename dirname mktemp diff sleep wget mount sort \
-    #     qemu-nbd bash genfstab mountpoint
+    #     qemu-nbd bash genfstab mountpoint dd
 }
 
 # region vim modline