Commit Graph

22 Commits

Author SHA1 Message Date
Glen Barber
7b1d17a1bc General mdoc(7) and typo fixes.
PR:		167804
Submitted by:	Nobuyuki Koganemaru (kogane!jp.freebsd.org)
MFC after:	3 days
2012-05-12 15:08:22 +00:00
Pawel Jakub Dawidek
f17b67e14b - Fix documentation to note that /etc/hast.conf is the default configuration
file for hastd(8) and hastctl(8) and not hast.conf.
- In copyright statement correct that this file is documentation, not software.
- Bump date.

MFC after:	3 days
2012-01-24 23:43:13 +00:00
Pawel Jakub Dawidek
07ebc3626e Implement 'async' mode for HAST.
MFC after:	3 days
2011-10-27 20:32:57 +00:00
Pawel Jakub Dawidek
bd738d630c Allow to specify pidfile in HAST configuration file.
MFC after:	1 week
2011-10-17 12:22:09 +00:00
Pawel Jakub Dawidek
518dd4c0d9 After every activemap change flush disk's write cache, so that write
reordering won't make the actual write to be committed before marking
the coresponding extent as dirty.

It can be disabled in configuration file.

If BIO_FLUSH is not supported by the underlying file system we log a warning
and never send BIO_FLUSH again to that GEOM provider.

MFC after:	3 days
2011-09-28 13:08:51 +00:00
Pawel Jakub Dawidek
588e8623d0 Document IPv6 support.
MFC after:	3 weeks
2011-05-20 11:21:39 +00:00
Pawel Jakub Dawidek
d4cb6369e6 In preparation for IPv6 support allow to specify multiple addresses to
listen on.

MFC after:	3 weeks
2011-05-19 23:18:42 +00:00
Pawel Jakub Dawidek
39526f7fb6 Increase default timeout from 5 seconds to 20 seconds. 5 seconds is definitely
to short under heavy load and I was experiencing those timeouts in my recent
tests.

MFC after:	1 week
2011-04-02 09:34:33 +00:00
Pawel Jakub Dawidek
0b626a289e In hast.conf we define the other node's address in 'remote' variable.
This way we know how to connect to secondary node when we are primary.
The same variable is used by the secondary node - it only accepts
connections from the address stored in 'remote' variable.
In cluster configurations it is common that each node has its individual
IP address and there is one addtional shared IP address which is assigned
to primary node. It seems it is possible that if the shared IP address is
from the same network as the individual IP address it might be choosen by
the kernel as a source address for connection with the secondary node.
Such connection will be rejected by secondary, as it doesn't come from
primary node individual IP.

Add 'source' variable that allows to specify source IP address we want to
bind to before connecting to the secondary node.

MFC after:	1 week
2011-03-21 08:54:59 +00:00
Pawel Jakub Dawidek
8cd3d45ad9 Allow to compress on-the-wire data using two algorithms:
- HOLE - it simply turns all-zero blocks into few bytes header;
	it is extremely fast, so it is turned on by default;
	it is mostly intended to speed up initial synchronization
	where we expect many zeros;
- LZF - very fast algorithm by Marc Alexander Lehmann, which shows
	very decent compression ratio and has BSD license.

MFC after:	2 weeks
2011-03-06 23:09:33 +00:00
Pawel Jakub Dawidek
1fee97b01f Allow to checksum on-the-wire data using either CRC32 or SHA256.
MFC after:	2 weeks
2011-03-06 22:56:14 +00:00
Pawel Jakub Dawidek
5b41e64486 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
Pawel Jakub Dawidek
2be8fd75ff 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
Pawel Jakub Dawidek
a870e771b9 - 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
Pawel Jakub Dawidek
ac59403c39 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
Joel Dahl
c2025a7660 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
Pawel Jakub Dawidek
44d63cff2e Document 'none' value for remote.
Reviewed by:	dougb
MFC after:	1 month
2010-08-05 19:54:57 +00:00
Joel Dahl
a53bb70bda Spelling fixes. 2010-07-31 21:09:49 +00:00
Pawel Jakub Dawidek
1a517c3ec5 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
Ulrich Spörlein
0b31f1f731 mdoc: move remaining sections into consistent order
This pertains mostly to FILES, HISTORY, EXIT STATUS and AUTHORS sections.

Found by:	mdocml lint run
Reviewed by:	ru
2010-05-13 12:08:11 +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
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