From 33d1a2fc8809cc8aec42cd4c5330c9a27f0f32f8 Mon Sep 17 00:00:00 2001
From: Josh Durgin <josh.durgin@inktank.com>
Date: Sat, 30 Mar 2013 17:28:35 -0700
Subject: [PATCH] librbd: return -ENOENT from diff_iterate when the snap
 doesn't exist

This is a bit more helpful than -EINVAL.

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
---
 src/librbd/internal.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/librbd/internal.cc b/src/librbd/internal.cc
index 49573966f8ba3..939a485587bb1 100644
--- a/src/librbd/internal.cc
+++ b/src/librbd/internal.cc
@@ -2315,7 +2315,7 @@ reprotect_and_return_err:
     ictx->snap_lock.put_read();
     ictx->md_lock.put_read();
     if (from_snap_id == CEPH_NOSNAP) {
-      return -EINVAL;
+      return -ENOENT;
     }
     if (from_snap_id == end_snap_id) {
       // no diff.
-- 
2.39.5