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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