cinder/hpe-3par-peer-persistence.yaml-91cc84bf89dbb462.yaml at 2a1a0bc3e2d8b75aabcb0402239369b14c4e1093 - cinder - OpenDev: Free Software Needs Free Tools

openstack/cinder

raghavendrat 46a16f1d61 3PAR: Add Peer Persistence support

Background:
Given 3PAR backend configured with replication setup, currently only
Active/Passive replication is supported by 3PAR in OpenStack. When
failover happens, nova does not support volume force-detach (from
dead primary backend) / re-attach to secondary backend. Storage
engineer's manual intervention is required.

Proposed Solution:
Given a system with Peer Persistence configured and replicated volume
is created. When this volume is attached to an instance, vlun would be
created automatically in secondary backend, in addition to primary
backend. So that when a failover happens, it is seamless.

This solution would apply under following conditions:
1] multipath is enabled
2] replication mode is set as "sync"
3] quorum witness is configured

Closes bug: #1839140

Change-Id: I2d0342adace69314bd159d3d6415a87ff29db562

2019-09-12 02:26:30 -07:00

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83 B

YAML

Raw Blame History

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 features:
   - |
     Added Peer Persistence support in HPE 3PAR cinder driver.