Commit Graph

25 Commits

Author SHA1 Message Date
Pawel Jakub Dawidek
347bde360a Log the fact of launching and include protocol version number.
MFC after:	3 days
2010-12-16 07:28:40 +00:00
Pawel Jakub Dawidek
2964aeb34a Load geom_gate.ko module after parsing arguments.
MFC after:	3 days
2010-10-24 15:38:58 +00:00
Pawel Jakub Dawidek
3f562cce40 Log correct connection when canceling half-open connection.
Submitted by:	Mikolaj Golub <to.my.trociny@gmail.com>
MFC after:	3 days
2010-10-17 15:47:27 +00:00
Pawel Jakub Dawidek
428ad0a9c4 Decrease report interval to 5 seconds, as this also means we will check for
signals every 5 seconds and not every 10 seconds as before.

MFC after:	3 days
2010-10-04 21:44:26 +00:00
Pawel Jakub Dawidek
5f24b330df hook_check() is now only used to report about long-running hooks, so the
argument is redundant, remove it.

MFC after:	3 days
2010-10-04 21:43:06 +00:00
Pawel Jakub Dawidek
41013c0b21 We can't mask ignored signal, so install dummy signal hander for SIGCHLD before
masking it.

This fixes bogus reports about hooks running for too long and other problems
related to garbage-collecting child processes.

Reported by:	Mikolaj Golub <to.my.trociny@gmail.com>
MFC after:	3 days
2010-10-04 21:41:18 +00:00
Pawel Jakub Dawidek
9dd5a6cb0f Switch to sigprocmask(2) API also in the main process and secondary process.
This way the primary process inherits signal mask from the main process,
which fixes a race where signal is delivered to the primary process before
configuring signal mask.

Reported by:	Mikolaj Golub <to.my.trociny@gmail.com>
MFC after:	3 days
2010-09-22 19:08:11 +00:00
Pawel Jakub Dawidek
196abd3518 Assert that descriptor numbers are sane.
MFC after:	3 days
2010-09-22 19:05:54 +00:00
Pawel Jakub Dawidek
0c24d8e2a1 Fix descriptor leaks: when child exits, we have to close control and event
socket pairs. We did that only in one case out of three.

MFC after:	3 days
2010-09-22 18:57:06 +00:00
Pawel Jakub Dawidek
5bdff860e7 Because it is very hard to make fork(2) from threaded process safe (we are
limited to async-signal safe functions in the child process), move all hooks
execution to the main (non-threaded) process.

Do it by maintaining connection (socketpair) between child and parent
and sending events from the child to parent, so it can execute the hook.

This is step in right direction for others reasons too. For example there is
one less problem to drop privs in worker processes.

MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
2010-08-30 23:26:10 +00:00
Pawel Jakub Dawidek
6b276294af 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
Pawel Jakub Dawidek
ecc99c890e 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
Pawel Jakub Dawidek
5da2320932 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
Pawel Jakub Dawidek
0becad39a7 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
Pawel Jakub Dawidek
0989854d45 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
Pawel Jakub Dawidek
bbbb114cda 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
Pawel Jakub Dawidek
005f438bf5 - 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
Pawel Jakub Dawidek
f3bd74124a 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
Pawel Jakub Dawidek
9fab3c1b94 Remove macros that are not really needed. The idea was to have them in case
we grow more descriptors, but I'll reconsider readding them once we get there.

Passing (a = b) expression to FD_ISSET() is bad idea, as FD_ISSET() evaluates
its argument twice.

Found by:	Coverity Prevent
CID:		5243
MFC after:	3 days
2010-06-14 21:18:58 +00:00
Pawel Jakub Dawidek
c6ddcbe009 - Check if the worker process was killed by signal and restart it.
- Improve logging.

Pointed out by:	Garrett Cooper <yanefbsd@gmail.com>
MFC after:	3 days
2010-04-29 15:42:24 +00:00
Pawel Jakub Dawidek
5571414ca8 Fix a problem where hastd will stuck in recv(2) after sending request to
secondary, which died between send(2) and recv(2). Do it by adding timeout
to recv(2) for primary incoming and outgoing sockets and secondary outgoing
socket.

Reported by:	Mikolaj Golub <to.my.trociny@gmail.com>
Tested by:	Mikolaj Golub <to.my.trociny@gmail.com>
MFC after:	3 days
2010-04-29 15:36:32 +00:00
Pawel Jakub Dawidek
83a5671405 Restart worker thread only if the problem was temporary.
In case of persistent problem we don't want to loop forever.

MFC after:	3 days
2010-04-28 22:41:06 +00:00
Pawel Jakub Dawidek
06c117d1d1 Use WEXITSTATUS() to obtain real exit code.
MFC after:	3 days
2010-04-28 22:26:30 +00:00
Pawel Jakub Dawidek
09398e9bd4 Fix control socket leak when worker process exits.
Submitted by:	Mikolaj Golub <to.my.trociny@gmail.com>
MFC after:	3 days
2010-04-16 06:47:29 +00:00
Pawel Jakub Dawidek
32115b105a Please welcome HAST - Highly Avalable Storage.
HAST allows to transparently store data on two physically separated machines
connected over the TCP/IP network. HAST works in Primary-Secondary
(Master-Backup, Master-Slave) configuration, which means that only one of the
cluster nodes can be active at any given time. Only Primary node is able to
handle I/O requests to HAST-managed devices. Currently HAST is limited to two
cluster nodes in total.

HAST operates on block level - it provides disk-like devices in /dev/hast/
directory for use by file systems and/or applications. Working on block level
makes it transparent for file systems and applications. There in no difference
between using HAST-provided device and raw disk, partition, etc. All of them
are just regular GEOM providers in FreeBSD.

For more information please consult hastd(8), hastctl(8) and hast.conf(5)
manual pages, as well as http://wiki.FreeBSD.org/HAST.

Sponsored by:	FreeBSD Foundation
Sponsored by:	OMCnet Internet Service GmbH
Sponsored by:	TransIP BV
2010-02-18 23:16:19 +00:00