qemurunner.py: add try/except for pid handling race

In some instances, attempts to remove the qemu pidfile within the
stop() method fail despite the os.path.exists() call immediately
before implying that the file is present. Add a try/except block
to log a warning if this occurs, rather than failing outright,
since the process simply appears to be exiting at an inconvenient
time.

[YOCTO #13675]

Signed-off-by: Trevor Gamblin <trevor.gamblin@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/lib/oeqa/utils/qemurunner.py b/meta/lib/oeqa/utils/qemurunner.py
index 2cada35d4800df8cbfa274c86518265e7e09cae3..47044222112add107cbd4f8a5a3b5ae22b79fadf 100644 (file)
--- a/meta/lib/oeqa/utils/qemurunner.py
+++ b/meta/lib/oeqa/utils/qemurunner.py
@@ -406,7 +406,10 @@ class QemuRunner:
         self.qemupid = None
         self.ip = None
         if os.path.exists(self.qemu_pidfile):
-            os.remove(self.qemu_pidfile)
+            try:
+                os.remove(self.qemu_pidfile)
+            except FileNotFoundError as e:
+                self.logger.warning('qemu pidfile is no longer present')
         if self.monitorpipe:
             self.monitorpipe.close()