src/append_reader.c: print more info when it reads bad data

When append_reader gets bad data, print the actual and expected values.
This was helpful to me when hunting a failure in generic/069 on ceph
recently.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>

diff --git a/src/append_reader.c b/src/append_reader.c
index 6b9e4f68e572d4e7d986b7fd23de19058639c072..4660268f2f52f14332e804ec749e248cb45f9cab 100644 (file)
--- a/src/append_reader.c
+++ b/src/append_reader.c
@@ -34,7 +34,7 @@ int main(int argc, char **argv)
                }
 
                if (d != i) {
-                       fprintf(stderr, "bad data, offset = %u", i * 4);
+                       fprintf(stderr, "bad data, offset = %u, got %d wanted %d\n", i * 4, d, i);
                        exit(1);
                }
        }