175 Commits

Author SHA1 Message Date
pjd
8a7b72b9d3 We only want to know if descriptors are ready for reading.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-30 23:19:21 +00:00
pjd
95ca781a2e When someone gives NULL as data, assume this is because he want to declare
connection side only.

MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-30 23:16:45 +00:00
pjd
107a540b8b Use pjdlog_exit() before fork().
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-30 22:28:04 +00:00
pjd
f116a70c0d Constify arguments we can constify.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-30 22:26:42 +00:00
pjd
e14a354a91 Execute hook when connection between the nodes is established or lost.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-30 00:31:30 +00:00
pjd
2357642204 Execute hook when split-brain is detected.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-30 00:12:10 +00:00
pjd
72d737839c Use sigtimedwait(2) for signals handling in primary process.
This fixes various races and eliminates use of pthread* API in signal handler.

Pointed out by:	kib
With help from:	jilles
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-30 00:06:05 +00:00
pjd
4ad9896077 - Move functionality responsible for checking one connection to separate
function to make code more readable.
- Be sure not to reconnect too often in case of signal delivery, etc.

MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-29 22:55:21 +00:00
pjd
39e5544fc3 Disconnect after logging errors.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-29 22:17:53 +00:00
pjd
1d4a51dd2d - Call hook on role change.
- Document new event.

MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-29 21:42:45 +00:00
pjd
70a52f0307 Allow to run hooks from the main hastd process.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-29 21:41:53 +00:00
pjd
9a66bc9a30 - Add hook_fini() which should be called after fork() from the main hastd
process, once it start to use hooks.
- Add hook_check_one() in case the caller expects different child processes
  and once it can recognize it, it will pass pid and status to hook_check_one().

MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-29 21:39:49 +00:00
pjd
4a3477caff Implement mtx_destroy() and rw_destroy().
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-29 21:37:21 +00:00
pjd
98dd369bdd When SIGTERM or SIGINT is received, terminate worker processes.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-27 21:28:02 +00:00
pjd
db793cba89 When logging to stdout/stderr, flush after each log.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-27 21:26:55 +00:00
pjd
ae9ec59c50 Correct when we log interrupted synchronization.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-27 21:20:32 +00:00
pjd
e55034b622 Check if no signals were delivered just before going to sleep.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-27 20:49:06 +00:00
pjd
bd949b7dfc Add hooks execution.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-27 20:48:12 +00:00
pjd
4b6cfc055c Document new 'exec' parameter.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-27 15:20:31 +00:00
pjd
74741a8c60 Allow to execute specified program on various HAST events.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-27 15:16:52 +00:00
pjd
aeab5efe07 - Run hooks in background - don't block waiting for them to finish.
- Keep all hooks we're running in a global list, so we can report when
  they finish and also report when they are running for too long.

MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-27 14:38:12 +00:00
pjd
dd3961e615 When logging to stdout/stderr don't close those descriptors after fork().
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-27 14:35:39 +00:00
pjd
ac5c9c9216 Reduce indent where possible.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-27 14:28:39 +00:00
pjd
ead19aaef1 Implement keepalive mechanism inside HAST protocol so we can detect secondary
node failures quickly for HAST resources that are rarely modified.

Remove XXX from a comment now that the guard thread never sleeps infinitely.

MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-27 14:26:37 +00:00
pjd
8729a28322 - Remove redundant and incorrect 'old' word from debug message.
- Log disconnects as warnings.

MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-27 14:12:53 +00:00
pjd
0a7a46d1e3 Don't increase number synchronized bytes in case of an error.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-27 14:10:25 +00:00
pjd
a3721f8d1b Log that synchronization was interrupted in a proper place.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-27 14:08:10 +00:00
pjd
b51d684000 We have sync_start() function to start synchronization, introduce sync_stop()
function to stop it.

MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-27 14:06:00 +00:00
pjd
79f0171a3e Add QUEUE_INSERT() and QUEUE_TAKE() macros that simplify the code a bit.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-27 14:01:28 +00:00
pjd
ef9c1a15b4 Add mtx_owned() implementation.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-27 13:58:38 +00:00
pjd
29f3bd82d2 Make comment more readable.
MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-27 13:54:17 +00:00
pjd
395a43623f For some setups sending data in 128kB chunks makes communication very slow. No
idea why. 32kB on the other hand seems to work properly everywhere.

Reported by:	Thomas Steen Rasmussen <thomas@gibfest.dk>
MFC after:	3 weeks
2010-08-18 12:09:27 +00:00
pjd
46021d25fa The 'size' variable is there to limit how many bytes we want to copy from
'addr'. It is very likely that size of 'addr' is larger than 'size', so checking
strlcpy() return value is bogus.

MFC after:	3 weeks
2010-08-16 21:59:56 +00:00
joel
dd1fff9bcb Fix typos, spelling, formatting and mdoc mistakes found by Nobuyuki while
translating these manual pages.  Minor corrections by me.

Submitted by:	Nobuyuki Koganemaru <n-kogane@syd.odn.ne.jp>
2010-08-16 15:18:30 +00:00
pjd
d71ba1ed02 Document 'none' value for remote.
Reviewed by:	dougb
MFC after:	1 month
2010-08-05 19:54:57 +00:00
pjd
7a18b662f1 Implement configuration reload on SIGHUP. This includes:
- Load added resources.
- Stop and forget removed resources.
- Update modified resources in least intrusive way, ie. don't touch
  /dev/hast/<name> unless path to local component or provider name were
  modified.

Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
MFC after:	1 month
2010-08-05 19:16:31 +00:00
pjd
7bbad9d8f8 Prepare configuration parsing code to be called multiple times:
- Don't exit on errors if not requested.
- Don't keep configuration in global variable, but allocate memory for
  configuration.
- Call yyrestart() before yyparse() so that on error in configuration file
  we will start from the begining next time and not from the place we left of.

MFC after:	1 month
2010-08-05 19:08:54 +00:00
pjd
31021ec9f1 Make control_set_role() more public. We will need it soon.
MFC after:	1 month
2010-08-05 19:04:29 +00:00
pjd
64f20fee87 Allow to use 'none' keywork as remote address in case second cluster node
is not setup yet.

MFC after:	1 month
2010-08-05 19:01:57 +00:00
pjd
25464151ef Reset signal handlers after fork().
MFC after:	1 month
2010-08-05 18:58:00 +00:00
pjd
ed23731ef1 - Use pjdlog_exitx() to log errors and exit instead of errx().
- Use 'unable to' (instead of 'cannot') consistently.

MFC after:	1 month
2010-08-05 18:56:24 +00:00
pjd
8f25a1f569 Assert that various buffers we are large enough.
MFC after:	1 month
2010-08-05 18:27:41 +00:00
pjd
ca14b5deab Problem with assertion is that it logs on stderr. Add two macros:
PJDLOG_ASSERT() and PJDLOG_VERIFY() that will check the given condition
and log the problem where appropriate. The difference between those
two is that PJDLOG_VERIFY() always work and PJDLOG_ASSERT() can be
turned off by defining NDEBUG.

MFC after:	1 month
2010-08-05 18:26:38 +00:00
pjd
dd50434feb Keep $FreeBSD$ in __FBSDID() only for C files.
MFC after:	1 month
2010-08-05 18:23:43 +00:00
pjd
5df4a855e5 Mark two more places that we won't reach.
MFC after:	1 month
2010-08-05 18:21:45 +00:00
pjd
d222eba6ff Now that TCP will be checked last we don't need any knowledge about other
protocols.

MFC after:	1 month
2010-08-05 17:57:59 +00:00
pjd
d808f64f39 Add an argument to the proto_register() function which allows protocol to
declare it is the default and be placed at the end of the queue so it is
checked last.

MFC after:	1 month
2010-08-05 17:56:41 +00:00
joel
be2c32910f Spelling fixes. 2010-07-31 21:09:49 +00:00
pjd
3f34a9652f Actually, only the fullsync mode is implemented, not memsync mode.
Correct manual page.

MFC after:	3 days
2010-07-22 08:30:14 +00:00
pjd
30cb3140ef Correct various log messages.
Submitted by:	Mikolaj Golub <to.my.trociny@gmail.com>
MFC after:	3 days
2010-06-14 21:46:48 +00:00