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| tbarron | bswartz: vponomaryov I'd be interested in your thoughts on the following (async reply with | 14:18 |
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| tbarron | bswartz: vponomaryov thoughts is fine, I'll likely be afk mostly todays anyways) | 14:18 |
| tbarron | We're building an NFS frontend onto the CephFS driver and | 14:18 |
| tbarron | are considering the relative merits, for the DHSS=False case, | 14:18 |
| tbarron | of following (1) the lvm driver model, and (2) the generic | 14:18 |
| tbarron | driver model. | 14:18 |
| tbarron | With #1 export locations use a configured address in the backend, | 14:18 |
| tbarron | e.g. lvm_share_export_ip and the exporting is done from the | 14:18 |
| tbarron | host itself. | 14:18 |
| tbarron | With #2 export locations use address from (typically at least) | 14:18 |
| tbarron | a floating-IP assigned to a service VM. The service VM must | 14:18 |
| tbarron | be started up externally to manila services themselves - | 14:18 |
| tbarron | e.g. by devstack plugin, tripleo, juju, whatever - prior to | 14:18 |
| tbarron | configuring the backend in manila.conf. | 14:18 |
| tbarron | I lean towards #1 because of its relative simplicity, and | 14:18 |
| tbarron | because of its smaller resource footprint in devstack gate, but want | 14:18 |
| tbarron | to make sure that I'm not missing some critical limitations. | 14:19 |
| tbarron | The main limitation that occurs to me is that multiple backends | 14:19 |
| tbarron | of the same type, both DHSS=False - so think of London and Paris | 14:19 |
| tbarron | with the lvm jobs in gate - will typically have the same export | 14:19 |
| tbarron | location IP. They'll effectively have the same share server | 14:19 |
| tbarron | as long as they run from a manila-share service on a single | 14:19 |
| tbarron | host. Offhand, that doesn't seem a show-stopper. | 14:19 |
| tbarron | Am I missing something important about that limitation, and are | 14:19 |
| tbarron | there other issues that I should think about? | 14:19 |
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