From: Mark Kampe <mark.kampe@inktank.com>
To: Adam Nielsen <a.nielsen@shikadi.net>
Cc: ceph-devel@vger.kernel.org
Subject: Re: Newbie questions
Date: Sat, 06 Oct 2012 17:34:53 -0700 [thread overview]
Message-ID: <5070CE2D.7060008@inktank.com> (raw)
In-Reply-To: <k4qh5i$l2a$1@ger.gmane.org>
In your original question, I assumed you were talking about the
partitioning of a single cluster. Now you are talking about
Geographic Disaster Recovery: the replication of data across
multiple (relatively) independent clusters. This is not yet
supported, but it is most definitely on the road-map.
On 10/6/2012 5:08 PM, Adam Nielsen wrote:
>> The problem you are describing is called split-brain. Ceph has an odd
>> number of monitors and quorum is required before objects can be served.
>> The partition with the smaller number of monitors will wait harmlessly
>> until connectivity is reestablished .
>
> Ah right, that makes sense. Is this set in stone or can it be
> configured? I'm just thinking that in this scenario it could be
> beneficial to allow read-only access from the partition with the smaller
> number of monitors, if there are also clients that can only see those
> hosts. (For example, a business with two sites, and the link between
> them goes down, so client PCs can only see their site-local servers.)
next prev parent reply other threads:[~2012-10-07 0:34 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-06 15:31 Newbie questions Mark Kampe
2012-10-07 0:08 ` Adam Nielsen
2012-10-07 0:34 ` Mark Kampe [this message]
-- strict thread matches above, loose matches on Subject: below --
2021-06-18 16:31 Ethy H. Brito
2021-06-18 17:40 ` Jesper Dangaard Brouer
2021-06-18 20:37 ` Ethy H. Brito
2021-06-22 1:28 ` Ethy H. Brito
2021-06-22 9:18 ` Jesper Dangaard Brouer
2015-08-31 0:30 newbie questions Pierre-Louis Bossart
2015-08-31 7:43 ` Johannes Berg
2015-08-31 12:50 ` Pierre-Louis Bossart
2015-08-31 12:54 ` Johannes Berg
2015-08-31 13:21 ` Pierre-Louis Bossart
2015-08-31 13:33 ` Johannes Berg
2015-08-31 14:26 ` Pierre-Louis Bossart
2015-08-31 14:38 ` Johannes Berg
2012-10-01 12:30 Newbie questions Adam Nielsen
2012-10-01 13:20 ` Joao Eduardo Luis
2012-10-01 16:13 ` Sage Weil
2012-10-06 15:05 ` Adam Nielsen
2005-11-01 17:33 Larry Alkoff
2005-11-02 5:41 ` Justin Zygmont
2005-11-03 0:55 ` Ralph Alvy
2005-11-03 4:12 ` Larry Alkoff
2005-11-03 6:17 ` Ralph Alvy
2005-11-03 7:32 ` John R. Sowden
2005-11-03 19:02 ` Larry Alkoff
2005-11-03 21:26 ` John R. Sowden
2005-11-04 3:45 ` Justin Zygmont
2005-11-05 17:06 ` Ralph Alvy
2005-11-05 19:25 ` Larry Alkoff
2005-11-06 0:42 ` Ralph Alvy
[not found] ` <436F5554.2030304@pobox.com>
[not found] ` <200511070723.31259.ralvy@warpmail.net>
2005-11-07 16:36 ` Alain
2005-11-09 7:46 ` Ralph Alvy
2005-10-06 18:17 Gaurav Poothia
2005-10-06 21:04 ` Ivan Gyurdiev
2005-10-06 22:05 ` Luke Kenneth Casson Leighton
2005-10-06 18:12 Gaurav Poothia
2005-01-19 15:07 Scott Miller
2005-01-19 15:10 ` Geert Uytterhoeven
2005-01-19 20:53 ` Scott Miller
2004-12-15 19:49 Newbie Questions Joseph Swaminathan
2004-12-15 20:23 ` Marco Gerards
2004-12-15 20:51 ` Joseph Swaminathan
2004-12-15 20:56 ` Marco Gerards
2004-03-25 21:32 Newbie questions Jan Rychter
2004-03-26 2:26 ` Steven Hand
2004-04-07 21:08 ` Jan Rychter
2004-03-26 2:35 ` Ian Pratt
2002-08-03 4:10 Gustavo Sverzut Barbieri
[not found] ` <20020803041040.10310.qmail-L8+/D2FWflyA/QwVtaZbd3CJp6faPEW9@public.gmane.org>
2002-08-03 12:49 ` Axel Siebenwirth
[not found] <200204070157.g371vDs24544@superglide.netfx-2000.net>
2002-04-25 8:10 ` Newbie Questions Daniel
2002-04-09 21:39 Gyzmobro
2002-04-09 22:14 ` Glynn Clements
2001-12-11 23:44 Slightly confuzed Charles Steinkuehler
2001-12-12 14:59 ` Newbie questions Charles Steinkuehler
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