Ben Pfaff aacea8ba43 daemon: Avoid races on pidfile creation. ...

Until now, if two copies of one OVS daemon started up at the same time,
then due to races in pidfile creation it was possible for both of them to
start successfully, instead of just one.  This was made worse when a
previous copy of the daemon had died abruptly, leaving a stale pidfile.

This commit implements a new pidfile creation and removal protocol that I
believe closes these races.  Now, a pidfile is asserted with "link" instead
of "rename", which prevents the race on creation, and a stale pidfile may
only be deleted by a process after it has taken a lock on it.

This may solve mysterious problems seen occasionally on vswitch restart.
I'm still puzzled by these problems, however, because I don't see anything
in our tests cases that would actually cause two copies of a daemon to
start at the same time, which as far as I can see is a necessary
precondition for the problem.

2011-04-04 10:59:19 -07:00

..

db

ovsdb: Force strong references to non-root tables to be persistent.

2011-03-31 16:43:43 -07:00

__init__.py

Implement initial Python bindings for Open vSwitch database.

2010-08-25 14:55:48 -07:00

automake.mk

Make installation directories overridable at runtime.

2010-11-29 16:29:11 -08:00

daemon.py

daemon: Avoid races on pidfile creation.

2011-04-04 10:59:19 -07:00

dirs.py

Make installation directories overridable at runtime.

2010-11-29 16:29:11 -08:00

fatal_signal.py

Implement initial Python bindings for Open vSwitch database.

2010-08-25 14:55:48 -07:00

json.py

Implement initial Python bindings for Open vSwitch database.

2010-08-25 14:55:48 -07:00

jsonrpc.py

jsonrpc.py: Import "ovs.json".

2011-02-21 23:56:07 -08:00

ovsuuid.py

python/ovs/ovsuuid: Fix behavior of UUID.from_json() with no symbol table.

2011-03-10 11:23:58 -08:00

poller.py

python: timer_wait_until calculated current time incorrectly

2010-09-17 18:05:06 -07:00

process.py

Implement initial Python bindings for Open vSwitch database.

2010-08-25 14:55:48 -07:00

reconnect.py

reconnect.py: Fix Python 2.4 compatibility break.

2011-03-15 14:42:49 -07:00

socket_util.py

Implement initial Python bindings for Open vSwitch database.

2010-08-25 14:55:48 -07:00

stream.py

Implement initial Python bindings for Open vSwitch database.

2010-08-25 14:55:48 -07:00

timeval.py

Implement initial Python bindings for Open vSwitch database.

2010-08-25 14:55:48 -07:00

util.py

python: Use os.path.basename instead of open-coding it.

2011-01-12 13:51:42 -08:00