From: Wido den Hollander <wido@widodh.nl>
To: Gandalf Corvotempesta <gandalf.corvotempesta@gmail.com>
Cc: ceph-devel@vger.kernel.org
Subject: Re: Rack Awareness
Date: Tue, 15 Jan 2013 11:24:12 +0100 [thread overview]
Message-ID: <50F52E4C.4000704@widodh.nl> (raw)
In-Reply-To: <CAJH6TXiCxyqb877HiCpj7uLpiBUPjAL5sPxrMnd1n1fXub85pg@mail.gmail.com>
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
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next prev parent reply other threads:[~2013-01-15 10:24 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-15 10:17 Rack Awareness Gandalf Corvotempesta
2013-01-15 10:24 ` Wido den Hollander [this message]
2013-01-15 10:34 ` Gandalf Corvotempesta
2013-01-15 10:59 ` Wido den Hollander
2013-01-15 11:14 ` Gandalf Corvotempesta
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