Assuming you are asking about RBD-back VMs, it is not possible to localize the all reads to the VM image. You can, however, enable localization of the parent image since that is a read-only data set. To enable that feature, set "rbd localize parent reads = true" and populate the "crush location = host=X rack=Y etc=Z" in your ceph.conf. On Fri, Mar 31, 2017 at 9:00 AM, Alejandro Comisario <alejandro@xxxxxxxxxxx> wrote: > any experiences ? > > On Wed, Mar 29, 2017 at 2:02 PM, Alejandro Comisario > <alejandro@xxxxxxxxxxx> wrote: >> Guys hi. >> I have a Jewel Cluster divided into two racks which is configured on >> the crush map. >> I have clients (openstack compute nodes) that are closer from one rack >> than to another. >> >> I would love to (if is possible) to specify in some way the clients to >> read first from the nodes on a specific rack then try the other one if >> is not possible. >> >> Is that doable ? can somebody explain me how to do it ? >> best. >> >> -- >> Alejandrito > > > > -- > Alejandro Comisario > CTO | NUBELIU > E-mail: alejandro@nubeliu.comCell: +54 9 11 3770 1857 > _ > www.nubeliu.com > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com -- Jason _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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