From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wido den Hollander Subject: Re: Rack Awareness Date: Tue, 15 Jan 2013 11:24:12 +0100 Message-ID: <50F52E4C.4000704@widodh.nl> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from smtp02.mail.pcextreme.nl ([109.72.87.138]:53912 "EHLO smtp02.mail.pcextreme.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755667Ab3AOKYO (ORCPT ); Tue, 15 Jan 2013 05:24:14 -0500 In-Reply-To: Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Gandalf Corvotempesta Cc: ceph-devel@vger.kernel.org Hi, On 01/15/2013 11:17 AM, Gandalf Corvotempesta wrote: > Hi all, > is ceph able to distribute datas across multiple racks like MooseFS > does with Rack Awareness features? > > For example, let's imagine a ceph cluster made with multiple OSDs > distributed in multiple server on multiple racks. > Is possible to tell ceph to distribute replicas across multiple racks > avoiding to have 3 copies of the same chunk on a single rack? > > For example: > > rack1.server1.osd1 > rack2.server5.osd9 > rack3.server9.osd11 Yes, no problem at all! That's where the crushmap is for. This way you can tell Ceph exactly how to distribute your data. You might want to take a look at these docs: http://ceph.com/docs/master/rados/operations/crush-map/ Wido > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >