From d04114c4a8e6cf27440d32b449e4e0421778d6ea Mon Sep 17 00:00:00 2001
From: Mykola Golub <mgolub@suse.com>
Date: Wed, 21 Nov 2018 13:20:48 +0200
Subject: [PATCH] doc: describe RBD QoS settings

Signed-off-by: Mykola Golub <mgolub@suse.com>
---
 doc/rbd/rbd-config-ref.rst | 110 +++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)

diff --git a/doc/rbd/rbd-config-ref.rst b/doc/rbd/rbd-config-ref.rst
index 5809e3e071f..e408c0d5c5a 100644
--- a/doc/rbd/rbd-config-ref.rst
+++ b/doc/rbd/rbd-config-ref.rst
@@ -185,3 +185,113 @@ RBD supports advanced features which can be specified via the command line when
 :Description: Journaling support depends on exclusive lock support. Journaling records all modifications to an image in the order they occur. RBD mirroring utilizes the journal to replicate a crash consistent image to a remote cluster.
 :Internal value: 64
 :CLI value: journaling
+
+
+RBD QOS Settings
+================
+
+RBD supports limiting per image IO, controlled by the following
+settings.
+
+``rbd qos iops limit``
+
+:Description: The desired limit of IO operations per second.
+:Type: Unsigned Integer
+:Required: No
+:Default: ``0``
+
+
+``rbd qos bps limit``
+
+:Description: The desired limit of IO bytes per second.
+:Type: Unsigned Integer
+:Required: No
+:Default: ``0``
+
+
+``rbd qos read iops limit``
+
+:Description: The desired limit of read operations per second.
+:Type: Unsigned Integer
+:Required: No
+:Default: ``0``
+
+
+``rbd qos write iops limit``
+
+:Description: The desired limit of write operations per second.
+:Type: Unsigned Integer
+:Required: No
+:Default: ``0``
+
+
+``rbd qos read bps limit``
+
+:Description: The desired limit of read bytes per second.
+:Type: Unsigned Integer
+:Required: No
+:Default: ``0``
+
+
+``rbd qos write bps limit``
+
+:Description: The desired limit of write bytes per second.
+:Type: Unsigned Integer
+:Required: No
+:Default: ``0``
+
+
+``rbd qos iops burst``
+
+:Description: The desired burst limit of IO operations.
+:Type: Unsigned Integer
+:Required: No
+:Default: ``0``
+
+
+``rbd qos bps burst``
+
+:Description: The desired burst limit of IO bytes.
+:Type: Unsigned Integer
+:Required: No
+:Default: ``0``
+
+
+``rbd qos read iops burst``
+
+:Description: The desired burst limit of read operations.
+:Type: Unsigned Integer
+:Required: No
+:Default: ``0``
+
+
+``rbd qos write iops burst``
+
+:Description: The desired burst limit of write operations.
+:Type: Unsigned Integer
+:Required: No
+:Default: ``0``
+
+
+``rbd qos read bps burst``
+
+:Description: The desired burst limit of read bytes.
+:Type: Unsigned Integer
+:Required: No
+:Default: ``0``
+
+
+``rbd qos write bps burst``
+
+:Description: The desired burst limit of write bytes.
+:Type: Unsigned Integer
+:Required: No
+:Default: ``0``
+
+
+``rbd qos schedule tick min``
+
+:Description: The minimum schedule tick (in milliseconds) for QoS.
+:Type: Unsigned Integer
+:Required: No
+:Default: ``50``
-- 
2.39.5