Commit Graph

4 Commits

Author SHA1 Message Date
Pawel Jakub Dawidek
eed4e65fdb Add nv_assert() which allows to assert that the given name exists.
MFC after:	1 week
2011-01-22 22:38:18 +00:00
Pawel Jakub Dawidek
b9ffbb0a94 Implement nv_exists() function that returns true if argument of the given
name exists.

MFC after:	3 days
2010-10-24 17:24:08 +00:00
Pawel Jakub Dawidek
3dea75d2a8 Move all NV defines into nv.c, they are not used externally thus there is
no need to make then visible from outside.

MFC after:	3 days
2010-10-24 17:22:34 +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