librbd: open parent as read-only during clone

We never write to the parent, and don't need to watch it during this process. Signed-off-by: Josh Durgin <[email protected]>
zmc · Dec 30, 2012 · 47bf519 · 47bf519
1 parent c67c789
commit 47bf519
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/librbd/internal.cc b/src/librbd/internal.cc
@@ -897,7 +897,7 @@ namespace librbd {
     librbd::NoOpProgressContext no_op;
     ImageCtx *c_imctx = NULL;
     // make sure parent snapshot exists
-    ImageCtx *p_imctx = new ImageCtx(p_name, "", p_snap_name, p_ioctx, false);
+    ImageCtx *p_imctx = new ImageCtx(p_name, "", p_snap_name, p_ioctx, true);
     r = open_image(p_imctx);
     if (r < 0) {
       lderr(cct) << "error opening parent image: "