Erick, You can use erasure coding but it has to be fronted by a replicated cache tier, or so states the documentation, I have never set up this configuration, and always opt to use RBD directly on replicated pools.
https://access.redhat.com/documentation/en/red-hat-ceph-storage/1.3/paged/storage-strategies/chapter-31-erasure-coded-pools-and-cache-tiering On Fri, Sep 16, 2016 at 1:15 AM, Josh Durgin <jdur...@redhat.com> wrote: > On 09/16/2016 09:46 AM, Erick Perez - Quadrian Enterprises wrote: > >> Can someone point me to a thread or site that uses ceph+erasure coding >> to serve block storage for Virtual Machines running with Openstack+KVM? >> All references that I found are using erasure coding for cold data or >> *not* VM block access. >> > > Erasure coding is not supported by RBD currently, since EC pools only > support append operations. There's work in progress to make it > possible, by allowing overwrites for EC pools, but it won't be usable > until at earliest Luminous [0]. > > Josh > > [0] http://tracker.ceph.com/issues/14031 > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > -- Respectfully, Wes Dillingham wes_dilling...@harvard.edu Research Computing | Infrastructure Engineer Harvard University | 38 Oxford Street, Cambridge, Ma 02138 | Room 210
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