From: Chun Feng Wu <wucf@xxxxxxxxxxxxx>
* Refactor "diskIoTune" to extract common schema "iotune"
* Add new elements '<throttlegroups>'
* <ThrottleGroups> contains <ThrottleGroup> defintion, which references
"iotune"
Signed-off-by: Chun Feng Wu <wucf@xxxxxxxxxxxxx>
---
docs/formatdomain.rst | 26 +++
src/conf/schemas/domaincommon.rng | 274 ++++++++++++++++--------------
2 files changed, 174 insertions(+), 126 deletions(-)
diff --git a/docs/formatdomain.rst b/docs/formatdomain.rst
index 00f861e385..b7e1f9cc83 100644
--- a/docs/formatdomain.rst
+++ b/docs/formatdomain.rst
@@ -1957,6 +1957,32 @@ advertisements to the guest OS. (NB: Only qemu driver support)
the guest OS itself can choose to circumvent the unavailability of the sleep
states (e.g. S4 by turning off completely).
+Disk Throttle Group Management
+------------------------------
+
+:since:`Since 10.5.0` it is possible to create multiple named throttle groups
+and then reference them within ``throttlefilters`` to form filter chain in QEMU for
+specific disk. The limits(throttlegroups) are shared within domain, hence the same group
+can be referenced by different filters.
+
+::
+
+ <domain>
+ ...
+ <throttlegroups>
+ <throttlegroup>
+ <group_name>limit0</group_name>
+ <total_bytes_sec>10000000</total_bytes_sec>
+ <read_iops_sec>400000</read_iops_sec>
+ <write_iops_sec>100000</write_iops_sec>
+ </throttlegroup>
+ </throttlegroups>
+ ...
+ </domain>
+
+``throttlegroup``
+ It has the same sub-elements as ``iotune`` (See `Hard drives, floppy disks, CDROMs`_),
+ The difference is that <group_name> is required.
Hypervisor features
-------------------
diff --git a/src/conf/schemas/domaincommon.rng b/src/conf/schemas/domaincommon.rng
index a46a824f88..08c520e222 100644
--- a/src/conf/schemas/domaincommon.rng
+++ b/src/conf/schemas/domaincommon.rng
@@ -51,6 +51,7 @@
</zeroOrMore>
<ref name="os"/>
<ref name="clock"/>
+ <ref name="throttlegroups"/>
<ref name="resources"/>
<ref name="features"/>
<ref name="events"/>
@@ -6653,6 +6654,23 @@
</interleave>
</element>
</define>
+ <define name="throttlegroup">
+ <element name="throttlegroup">
+ <ref name="iotune"/>
+ </element>
+ </define>
+ <!--
+ A set of optional throttlegroups
+ -->
+ <define name="throttlegroups">
+ <optional>
+ <element name="throttlegroups">
+ <zeroOrMore>
+ <ref name="throttlegroup"/>
+ </zeroOrMore>
+ </element>
+ </optional>
+ </define>
<!--
A set of optional features: PAE, APIC, ACPI, GIC, TCG,
HyperV Enlightenment, KVM features, paravirtual spinlocks and HAP support
@@ -7615,134 +7633,138 @@
</element>
</define>
+ <define name="iotune">
+ <interleave>
+ <choice>
+ <element name="total_bytes_sec">
+ <data type="unsignedLong"/>
+ </element>
+ <group>
+ <interleave>
+ <optional>
+ <element name="read_bytes_sec">
+ <data type="unsignedLong"/>
+ </element>
+ </optional>
+ <optional>
+ <element name="write_bytes_sec">
+ <data type="unsignedLong"/>
+ </element>
+ </optional>
+ </interleave>
+ </group>
+ </choice>
+ <choice>
+ <element name="total_iops_sec">
+ <data type="unsignedLong"/>
+ </element>
+ <group>
+ <interleave>
+ <optional>
+ <element name="read_iops_sec">
+ <data type="unsignedLong"/>
+ </element>
+ </optional>
+ <optional>
+ <element name="write_iops_sec">
+ <data type="unsignedLong"/>
+ </element>
+ </optional>
+ </interleave>
+ </group>
+ </choice>
+ <choice>
+ <element name="total_bytes_sec_max">
+ <data type="unsignedLong"/>
+ </element>
+ <group>
+ <interleave>
+ <optional>
+ <element name="read_bytes_sec_max">
+ <data type="unsignedLong"/>
+ </element>
+ </optional>
+ <optional>
+ <element name="write_bytes_sec_max">
+ <data type="unsignedLong"/>
+ </element>
+ </optional>
+ </interleave>
+ </group>
+ </choice>
+ <choice>
+ <element name="total_iops_sec_max">
+ <data type="unsignedLong"/>
+ </element>
+ <group>
+ <interleave>
+ <optional>
+ <element name="read_iops_sec_max">
+ <data type="unsignedLong"/>
+ </element>
+ </optional>
+ <optional>
+ <element name="write_iops_sec_max">
+ <data type="unsignedLong"/>
+ </element>
+ </optional>
+ </interleave>
+ </group>
+ </choice>
+ <optional>
+ <element name="size_iops_sec">
+ <data type="unsignedLong"/>
+ </element>
+ </optional>
+ <optional>
+ <element name="group_name">
+ <text/>
+ </element>
+ </optional>
+ <choice>
+ <element name="total_bytes_sec_max_length">
+ <data type="unsignedLong"/>
+ </element>
+ <group>
+ <interleave>
+ <optional>
+ <element name="read_bytes_sec_max_length">
+ <data type="unsignedLong"/>
+ </element>
+ </optional>
+ <optional>
+ <element name="write_bytes_sec_max_length">
+ <data type="unsignedLong"/>
+ </element>
+ </optional>
+ </interleave>
+ </group>
+ </choice>
+ <choice>
+ <element name="total_iops_sec_max_length">
+ <data type="unsignedLong"/>
+ </element>
+ <group>
+ <interleave>
+ <optional>
+ <element name="read_iops_sec_max_length">
+ <data type="unsignedLong"/>
+ </element>
+ </optional>
+ <optional>
+ <element name="write_iops_sec_max_length">
+ <data type="unsignedLong"/>
+ </element>
+ </optional>
+ </interleave>
+ </group>
+ </choice>
+ </interleave>
+ </define>
+
<define name="diskIoTune">
<element name="iotune">
- <interleave>
- <choice>
- <element name="total_bytes_sec">
- <data type="unsignedLong"/>
- </element>
- <group>
- <interleave>
- <optional>
- <element name="read_bytes_sec">
- <data type="unsignedLong"/>
- </element>
- </optional>
- <optional>
- <element name="write_bytes_sec">
- <data type="unsignedLong"/>
- </element>
- </optional>
- </interleave>
- </group>
- </choice>
- <choice>
- <element name="total_iops_sec">
- <data type="unsignedLong"/>
- </element>
- <group>
- <interleave>
- <optional>
- <element name="read_iops_sec">
- <data type="unsignedLong"/>
- </element>
- </optional>
- <optional>
- <element name="write_iops_sec">
- <data type="unsignedLong"/>
- </element>
- </optional>
- </interleave>
- </group>
- </choice>
- <choice>
- <element name="total_bytes_sec_max">
- <data type="unsignedLong"/>
- </element>
- <group>
- <interleave>
- <optional>
- <element name="read_bytes_sec_max">
- <data type="unsignedLong"/>
- </element>
- </optional>
- <optional>
- <element name="write_bytes_sec_max">
- <data type="unsignedLong"/>
- </element>
- </optional>
- </interleave>
- </group>
- </choice>
- <choice>
- <element name="total_iops_sec_max">
- <data type="unsignedLong"/>
- </element>
- <group>
- <interleave>
- <optional>
- <element name="read_iops_sec_max">
- <data type="unsignedLong"/>
- </element>
- </optional>
- <optional>
- <element name="write_iops_sec_max">
- <data type="unsignedLong"/>
- </element>
- </optional>
- </interleave>
- </group>
- </choice>
- <optional>
- <element name="size_iops_sec">
- <data type="unsignedLong"/>
- </element>
- </optional>
- <optional>
- <element name="group_name">
- <text/>
- </element>
- </optional>
- <choice>
- <element name="total_bytes_sec_max_length">
- <data type="unsignedLong"/>
- </element>
- <group>
- <interleave>
- <optional>
- <element name="read_bytes_sec_max_length">
- <data type="unsignedLong"/>
- </element>
- </optional>
- <optional>
- <element name="write_bytes_sec_max_length">
- <data type="unsignedLong"/>
- </element>
- </optional>
- </interleave>
- </group>
- </choice>
- <choice>
- <element name="total_iops_sec_max_length">
- <data type="unsignedLong"/>
- </element>
- <group>
- <interleave>
- <optional>
- <element name="read_iops_sec_max_length">
- <data type="unsignedLong"/>
- </element>
- </optional>
- <optional>
- <element name="write_iops_sec_max_length">
- <data type="unsignedLong"/>
- </element>
- </optional>
- </interleave>
- </group>
- </choice>
- </interleave>
+ <ref name="iotune"/>
</element>
</define>
--
2.34.1
