On 02/26/2010 03:44 PM, Joey Boggs wrote:
Adds the readonly_overlay karg for cases where the dm snapshot should be set to readonly. Use case would be a livecd that is configured to have a readonly root where filling up the dm snapshot would cause a problem.--- modules.d/90dmsquash-live/dmsquash-live-root | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/modules.d/90dmsquash-live/dmsquash-live-root b/modules.d/90dmsquash-live/dmsquash-live-root index acec91d..f40e048 100755 --- a/modules.d/90dmsquash-live/dmsquash-live-root +++ b/modules.d/90dmsquash-live/dmsquash-live-root @@ -20,6 +20,7 @@ live_dir=$(getarg live_dir) [ -z "$live_dir" ]&& live_dir="LiveOS" getarg live_ram&& live_ram="yes" getarg reset_overlay&& reset_overlay="yes" +getarg readonly_overlay&& readonly_overlay="--readonly" || readonly_overlay="" overlay=$(getarg overlay) # FIXME: we need to be able to hide the plymouth splash for the check really @@ -95,7 +96,7 @@ do_live_overlay() { fi # set up the snapshot - echo 0 `blockdev --getsize $BASE_LOOPDEV` snapshot $BASE_LOOPDEV $OVERLAY_LOOPDEV p 8 | dmsetup create live-rw + echo 0 `blockdev --getsize $BASE_LOOPDEV` snapshot $BASE_LOOPDEV $OVERLAY_LOOPDEV p 8 | dmsetup create $readonly_overlay live-rw } # live cd helper function
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