Run the nbd_scenario tests under valgrind

tests/flexnbd.rb

@@ -16,11 +16,12 @@ class FlexNBD
   def serve(ip, port, file, *acl)
     File.unlink(ctrl) if File.exists?(ctrl)
     @pid = fork do
-      cmd ="#{@bin} serve "\
+      cmd ="valgrind #{@bin} serve "\
            "--addr #{ip} "\
            "--port #{port} "\
            "--file #{file} "\
            "--sock #{ctrl} "\
+           "--debug "\
            "#{acl.join(' ')}"
       exec(cmd)
     end
@@ -33,10 +34,11 @@ class FlexNBD
   end
 
   def read(offset, length)
-    IO.popen("#{@bin} read "\
+    IO.popen("valgrind #{@bin} read "\
              "--addr #{ip} "\
              "--port #{port} "\
              "--from #{offset} "\
+           "--debug "\
              "--size #{length}","r") do |fh|
       return fh.read
     end
@@ -44,10 +46,11 @@ class FlexNBD
   end
 
   def write(offset, data)
-    IO.popen("#{@bin} write "\
+    IO.popen("valgrind #{@bin} write "\
              "--addr #{ip} "\
              "--port #{port} "\
              "--from #{offset} "\
+           "--debug "\
              "--size #{data.length}","w") do |fh|
       fh.write(data)
     end