From 364474beda365e5bdcb4a100e68f1b3dee241766 Mon Sep 17 00:00:00 2001 From: tushargite96 Date: Thu, 3 Sep 2020 15:02:59 +0530 Subject: [PATCH] Capacity based QoS doc The Cinder Capacity based quality of service documentation does not provide enough information to understand difference between options to control capacity based quality of service. These option can categorized into dynamic and minimum IOPS per volume and dynamic and minimum bandwidth per volume. Change-Id: If45b7a13ffc4311df43dbd241c305b74675a408d Closes-Bug: #1894072 --- doc/source/admin/blockstorage-capacity-based-qos.rst | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/doc/source/admin/blockstorage-capacity-based-qos.rst b/doc/source/admin/blockstorage-capacity-based-qos.rst index 4bd948951d3..b88fccd2e98 100644 --- a/doc/source/admin/blockstorage-capacity-based-qos.rst +++ b/doc/source/admin/blockstorage-capacity-based-qos.rst @@ -24,9 +24,14 @@ the quality of service. There are currently 6 options to control capacity based quality of service which values should be fairly self explanatory: +For dynamic IOPS per volume. + * `read_iops_sec_per_gb` * `write_iops_sec_per_gb` * `total_iops_sec_per_gb` + +For dynamic bandwidth per volume. + * `read_bytes_sec_per_gb` * `write_bytes_sec_per_gb` * `total_bytes_sec_per_gb` @@ -35,9 +40,14 @@ In addition, there are 6 more options which allow you to control the minimum possible value. This can be useful in cases where a user creates a volume that is very small and ends up with an unusable volume because of performance. +For minimum IOPS per volume. + * `read_iops_sec_per_gb_min` * `write_iops_sec_per_gb_min` * `total_iops_sec_per_gb_min` + +For minimum bandwidth per volume. + * `read_bytes_sec_per_gb_min` * `write_bytes_sec_per_gb_min` * `total_bytes_sec_per_gb_min`