Support setting upperdir tmpfs size with overlay-size boot parameter

[live-boot-grml.git] / components / 9990-overlay.sh

diff --git a/components/9990-overlay.sh b/components/9990-overlay.sh
index 8fd0cfd..db6a44e 100755 (executable)
--- a/components/9990-overlay.sh
+++ b/components/9990-overlay.sh
@@ -240,12 +240,12 @@ setup_unionfs ()
        then
                cowdevice="tmpfs"
                cow_fstype="tmpfs"
-               cow_mountopt="rw,noatime,mode=755"
+               cow_mountopt="rw,noatime,mode=755,size=${OVERLAY_SIZE:-50%}"
        fi
 
        if [ -n "${PERSISTENCE_READONLY}" ] && [ "${cowdevice}" != "tmpfs" ]
        then
-               mount -t tmpfs -o rw,noatime,mode=755 tmpfs "/live/overlay"
+               mount -t tmpfs -o rw,noatime,mode=755,size=${OVERLAY_SIZE:-50%} tmpfs "/live/overlay"
                root_backing="/live/persistence/$(basename ${cowdevice})-root"
                mkdir -p ${root_backing}
        else