2016-08-08 10:52 GMT+02:00 Timofei Durakov <[email protected]>: > Hi, > > so for this moment we have 2 options: > - somehow check every time that nodes are on shared storage(now it's done > over ssh) > - define that shared storage explicitly() > The possible workaround for the first option is to use RPC for checking that > temporarily created test file exists(more RPC calls).
This sounds like a sane idea as well. > For the second option(I think the most preferable) there is a bp [1] that > introduce abstraction that allows set up such shared storages. Please note that "shared storage" is a relation between two compute nodes: "do we share the same storage?". In a complex enough cloud you might have nodes with shared storage and "standalone" nodes, so you cannot use a global config option. The linked blueprint seems to go in the right direction (although I could only make sense of it after reading the related spec page: http://specs.openstack.org/openstack/nova-specs/specs/newton/approved/generic-resource-pools.html) Alternatively we could use an host aggregate property, like "shared_storage=<label>". All nodes with the same label also share the same storage. But I personally like the resource-pool idea better. my 2 cents. .a. -- [email protected] [email protected] +41 (0)44 635 42 22 S3IT: Service and Support for Science IT http://www.s3it.uzh.ch/ University of Zurich Winterthurerstrasse 190 CH-8057 Zurich Switzerland _______________________________________________ OpenStack-operators mailing list [email protected] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
