Updated so fork does not have output when it writes to its pid file and updated util to make this possible.

devstack/runners/fork.py

@@ -145,7 +145,7 @@ class ForkRunner(runner.Runner):
             else:
                 #write out the child pid
                 contents = str(pid) + os.linesep
-                sh.write_file(pid_fn, contents)
+                sh.write_file(pid_fn, contents, quiet=True)
                 #not exit or sys.exit, this is recommended
                 #since it will do the right cleanups that we want
                 #not calling any atexit functions, which would

devstack/shell.py

@@ -187,7 +187,8 @@ def mkdirslist(path):
     return dirs_made
 
 
-def append_file(fn, text, flush=True):
+def append_file(fn, text, flush=True, quiet=False):
+    if(not quiet):
         LOG.debug("Appending to file %s (%d bytes)", fn, len(text))
     with open(fn, "a") as f:
         f.write(text)
@@ -195,7 +196,8 @@ def append_file(fn, text, flush=True):
             f.flush()
 
 
-def write_file(fn, text, flush=True):
+def write_file(fn, text, flush=True, quiet=False):
+    if(not quiet):
         LOG.debug("Writing to file %s (%d bytes)", fn, len(text))
     with open(fn, "w") as f:
         f.write(text)
@@ -203,8 +205,9 @@ def write_file(fn, text, flush=True):
             f.flush()
 
 
-def touch_file(fn, die_if_there=True):
+def touch_file(fn, die_if_there=True, quiet=False):
     if(not isfile(fn)):
+        if(not quiet):
             LOG.debug("Touching and truncating file %s", fn)
         with open(fn, "w") as f:
             f.truncate(0)
@@ -214,11 +217,13 @@ def touch_file(fn, die_if_there=True):
             raise excp.FileException(msg)
 
 
-def load_file(fn):
+def load_file(fn, quiet=False):
+    if(not quiet):
         LOG.debug("Loading data from file %s", fn)
     data = ""
     with open(fn, "r") as f:
         data = f.read()
+    if(not quiet):
         LOG.debug("Loaded (%d) bytes from file %s", len(data), fn)
     return data