Hi Pshem On Thu, Nov 26, 2015 at 12:18 AM, Pshem Kowalczyk <pshe...@gmail.com> wrote:
> Hi, > > In this particular case I just want to make sure that my settings for > CRUSH are used for various pools and be able to define my own pools (see > below). > > I'm trying to create two different pools for both nova-compute and > cinder-ceph (one with SSDs the other with spinning drives). I have managed > to create another 'local storage' (lvm based) cinder instance (and that > works fine with volume-type). But I'm completely unsure as how to keep one > ceph instance with different types of pools for cinder. At this stage > doesn't look like the cinder (or cinder-ceph) charm allows you to specify > the pool to use (it allows for one for volume-group for local LVM). For the > nova-compute I'm basing the setup on is here: > https://ceph.com/planet/openstack-nova-configure-multiple-ceph-backends-on-one-hypervisor/ > (which > requires for a single nova-compute charm to be aware of 2 pools). The > second one is probably less important since I (probably, not tried that > yet) create deploy two nova-compute charms with different rbd-pool settings > and point back to the same ceph charm. > You can deploy the cinder-ceph charm multiple times to support your multiple cinder pool requirement (so long as they both use the same ceph cluster): juju deploy cinder-ceph ceph-ssd-backend juju deploy cinder-ceph ceph-spinning-disk-backend juju add-relation cinder ceph-ssd-backend juju add-relation cinder ceph-spinning-disk-backend This will create two pools in the Ceph cluster ('ceph-ssd-backend' and 'ceph-spinning-disk-backend'); right now you will have to tune the CRUSH map by hand post deployment to target SSD and spinning disks for each pool; however I do know that the storage team at Canonical are working on features on the Ceph charms to make pool management and configuration a-lot easier todo via Juju actions - so although this is a bit painful today, it should get alot easier... That should resolve you challenges with regards to cinder presented volumes; right now the nova-compute libvirt rbd backend is usable in the nova-compute charm, but it won't support Sebastian's two compute daemon configuration as described in the article you linked to. HTH
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