openstack/cinder
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cinder/releasenotes/notes/vmax-oversubscription-d61d0e3b1df2487a.yaml

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EMC VMAX - Oversubscription support When max_over_subscription_ratio is 2.0 the pool are oversubscribed by a factor of 2, or 200% over subscribed. The reserved_percentage is the high water mark where by the physical remaining space cannot be exceeded. For example, if there is only 4% of physical space left and the reserve percentage is 5, user would not be permitted to provision a volume. This is a safety mechanism to prevent a scenario that a provisioning request failing due to insufficient raw space. Change-Id: I55614d05701d461d4b0b85f6f57c49d98b014641 Implements: blueprint vmax-oversubscription
2016-04-18 22:56:23 +01:00
---
features:
- Added oversubscription support in the VMAX driver
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