cinder/releasenotes/notes/powermax-auto-migration-5cc57773c23fef02.yaml
Helen Walsh 197e024747 PowerMax Driver - Legacy volumes fail to live migrate
The fix moves the legacy shared volume from the masking view
structure in Ocata and sooner (when SMI-S was supported) to staging
masking view(s) in Pike and later releases (U4P REST).
In Ocata, the live migration process shared the storage group,
containing the volume, among the different compute Nodes. In PIke,
we changed the masking view structure to facilitate a cleaner live
migration process where only the volume is migrated and not all the
other volumes in the storage group. The staging storage group and
masking views facilitate a seamless live migration operation in
upgraded releases.

Change-Id: I4d28d8ed2375f68eed511de5c25898362eac1def
Closes-Bug: #1867163
2020-08-05 10:52:46 +01:00

14 lines
689 B
YAML

---
features:
- |
This PowerMax driver moves the legacy shared volume from the masking
view structure in Ocata and prior releases (when SMI-S was supported) to
staging masking view(s) in Pike and later releases (U4P REST).
In Ocata, the live migration process shared the storage group,
containing the volume, among the different compute nodes. In Pike,
we changed the masking view structure to facilitate a cleaner live
migration process where only the intended volume is migrated without
exposing other volumes in the storage group. The staging storage group
and masking views facilitate a seamless live migration operation in
upgraded releases.