fix(dmsquash-live): use the overlay size with thin provisioning

Using the overlay size in the device mapper table allows the filesystem
in the base image to be extended if the overlay is larger than the
base image (e.g. `resize2fs /dev/mapper/live-rw`).

diff --git a/modules.d/90dmsquash-live/dmsquash-live-root.sh b/modules.d/90dmsquash-live/dmsquash-live-root.sh
index 7bafa018d522aa61d01c7d497339984fa65d1254..1237b82d793aa64db78e82eba0551b2847a1d4a9 100755 (executable)
--- a/modules.d/90dmsquash-live/dmsquash-live-root.sh
+++ b/modules.d/90dmsquash-live/dmsquash-live-root.sh
@@ -298,7 +298,7 @@ do_live_overlay() {
         dmsetup message /dev/mapper/live-overlay-pool 0 "create_thin 0"
 
         # Create a snapshot of the base image
-        echo 0 "$sz" thin /dev/mapper/live-overlay-pool 0 "$base" | dmsetup create live-rw
+        echo 0 "$thin_data_sz" thin /dev/mapper/live-overlay-pool 0 "$base" | dmsetup create live-rw
     elif [ -z "$overlayfs" ]; then
         echo 0 "$sz" snapshot "$base" "$over" PO 8 | dmsetup create live-rw
     fi