[OE-core] [zeus][PATCH 03/22] qemurunner.py: add try/except for pid handling race

[Anuj Mittal]

From: Trevor Gamblin <trevor.gamblin at windriver.com>

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 at windriver.com>
Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
(cherry picked from commit eadb899e23b18eb9eaff145c3bf5b20fb417c3e8)
Signed-off-by: Armin Kuster <akuster808 at gmail.com>
---
 meta/lib/oeqa/utils/qemurunner.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/meta/lib/oeqa/utils/qemurunner.py b/meta/lib/oeqa/utils/qemurunner.py
index fe8b77d..0d63e44 100644
--- a/meta/lib/oeqa/utils/qemurunner.py
+++ b/meta/lib/oeqa/utils/qemurunner.py
@@ -396,7 +396,10 @@ 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()
 
-- 
2.7.4