From 86fff83927ad194def97c60c2eef80099ebb1238 Mon Sep 17 00:00:00 2001

From: "Brian C. Lane" <bcl@redhat.com>

Date: Tue, 8 Oct 2013 15:13:44 +0200

Subject: [PATCH] dmsquash-live: add /dev/mapper/live-base

This is similar to the reason for adding the

/run/initramfs/live-baseloop symlink -- access to the original live

image without overlays.

livemedia-creator does not create a osmin.img, so there is no mountable

device for it to use when rsyncing the live image to the target. It

needs a device that points to the original live image without overlays.

Note that lmc won't be creating osmin.img, since really isn't needed any

longer. Its purpose was to provide a minimal image that could be dd'd to

the target. Now that we use rsync this is no longer necessary.

The included patch adds a /dev/mapper/live-base device that Anaconda can

use whether or not there is an osmin present.

---

 modules.d/90dmsquash-live/dmsquash-live-root.sh | 6 +++---

 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/modules.d/90dmsquash-live/dmsquash-live-root.sh b/modules.d/90dmsquash-live/dmsquash-live-root.sh

index 8951f80..5705e8d 100755

--- a/modules.d/90dmsquash-live/dmsquash-live-root.sh

+++ b/modules.d/90dmsquash-live/dmsquash-live-root.sh

@@ -144,6 +144,9 @@ do_live_overlay() {

         over=$OVERLAY_LOOPDEV

     fi

     echo 0 $sz snapshot $base $over p 8 | dmsetup create live-rw

+

+    # Create a device that always points to a ro base image

+    echo 0 $sz linear $base 0 | dmsetup create --readonly live-base

 }

 # live cd helper function

@@ -225,9 +228,6 @@ if [ -n "$ROOTFLAGS" ]; then

     ROOTFLAGS="-o $ROOTFLAGS"

 fi

-if [ -b "$BASE_LOOPDEV" ]; then

-    ln -s $BASE_LOOPDEV /run/initramfs/live-baseloop

-fi

 ln -s /dev/mapper/live-rw /dev/root

 printf 'mount %s /dev/mapper/live-rw %s\n' "$ROOTFLAGS" "$NEWROOT" > $hookdir/mount/01-$$-live.sh