Date: Sat, 20 Feb 2010 18:11:38 -0300 From: Renato Botelho <rbgarga@gmail.com> To: Pawel Jakub Dawidek <pjd@freebsd.org> Cc: freebsd-fs@freebsd.org, freebsd-current@freebsd.org Subject: Re: HAST (Highly Available Storage) now in HEAD. Message-ID: <747dc8f31002201311k2131a74ake3de75ab1aec9e43@mail.gmail.com> In-Reply-To: <20100219200725.GA1617@garage.freebsd.pl> References: <20100219200725.GA1617@garage.freebsd.pl>
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On Fri, Feb 19, 2010 at 5:07 PM, Pawel Jakub Dawidek <pjd@freebsd.org> wrot= e: > Hi. > > Yesterday I committed HAST to the HEAD branch. > > 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: > > =A0 =A0 =A0 =A0http://wiki.FreeBSD.org/HAST > > On the wiki page above you should find instructions how to initialize > hast and integrate it with ucarp. > > Let me know (using freebsd-fs@FreeBSD.org mailing list) if you have and > questions or comments. > > And last, but not least, I'd like to thank sponsorswho made this > projects possible: > > =A0 =A0 =A0 =A0The FreeBSD Foundation, http://www.freebsdfoundation.org > =A0 =A0 =A0 =A0OMCnet Internet Service GmbH, http://www.omc.net > =A0 =A0 =A0 =A0TransIP BV, http://www.transip.nl It's great news, thank you for your hard work!!! --=20 Renato Botelho
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