Support vm dynamic scaling with kvm by GutoVeronezi · Pull Request #4878 · apache/cloudstack · GitHub

Description

ACS has an API to scale VMs scaleVirtualMachine, however dynamic scale of VMs is limited to XenServer and VMWare.

This PR intends suport live scale for VMs on KVM.

When we are using a custom service offerings, KVM's XML only receives the boot memory, but with this changes it will receive the max values defined in the service offerings. If it is a unconstrainced service offering, max values will be the vm.serviceoffering.cpu.cores.max and vm.serviceoffering.ram.size.max values . If they are 0, max values will be host or last host capacities.

Types of changes

Breaking change (fix or feature that would cause existing functionality to change)
New feature (non-breaking change which adds functionality)
Bug fix (non-breaking change which fixes an issue)
Enhancement (improves an existing feature and functionality)
Cleanup (Code refactoring and cleanup, that may add test cases)

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

Major
Minor

How Has This Been Tested?

I created unit tests for the code that is being introduced here. Moreover, it has been tested locally in a test lab. I created multiples VMs with multiples definitions and tested API with they:

VM STATE	INIT CPU CORES	UP TO	INIT RAM SIZE	UP TO	SERVICE OFFERING	RAM SERVICE OFFERING	CPU SERVICE OFFERING	MAX RAM CONFIG	MAX CPU CONFIG	EXPECTED RESULT
RUNNING	1	3	64	128	CONSTRAINED	256	2	512	4	FAIL
RUNNING	1	2	64	257	CONSTRAINED	256	2	512	4	FAIL
RUNNING	1	2	128	64	CONSTRAINED	256	2	512	4	FAIL
RUNNING	2	1	64	64	CONSTRAINED	256	2	512	4	FAIL
STOPPED	1	3	64	128	CONSTRAINED	256	2	512	4	FAIL
STOPPED	1	2	64	257	CONSTRAINED	256	2	512	4	FAIL
RUNNING	1	2	64	128	CONSTRAINED	256	2	512	4	SUCCESS
RUNNING	1	1	64	128	CONSTRAINED	256	2	512	4	SUCCESS
RUNNING	1	2	64	64	CONSTRAINED	256	2	512	4	SUCCESS
STOPPED	1	2	128	64	CONSTRAINED	256	2	512	4	SUCCESS
STOPPED	2	1	64	64	CONSTRAINED	256	2	512	4	SUCCESS
STOPPED	1	1	64	128	CONSTRAINED	256	2	512	4	SUCCESS
STOPPED	1	1	128	64	CONSTRAINED	256	2	512	4	SUCCESS
RUNNING	1	2	128	64	UNCONSTRAINED			512	4	FAIL
RUNNING	2	1	64	64	UNCONSTRAINED			512	4	FAIL
STOPPED	1	2	128	64	UNCONSTRAINED			512	4	SUCCESS
STOPPED	2	1	64	64	UNCONSTRAINED			512	4	SUCCESS
RUNNING	1	3	64	128	UNCONSTRAINED			512	4	FAIL
STOPPED	1	1	64	4000	UNCONSTRAINED			512	4	FAIL
RUNNING	1	2	64	128	UNCONSTRAINED			512	4	SUCCESS
RUNNING	1	1	64	128	UNCONSTRAINED			512	4	SUCCESS
RUNNING	1	2	64	64	UNCONSTRAINED			512	4	SUCCESS
RUNNING	1	2	64	257	UNCONSTRAINED			512	4	SUCCESS
RUNNING	1	1	64	700	UNCONSTRAINED			0	0	SUCCESS
STOPPED	1	2	64	128	UNCONSTRAINED			512	4	SUCCESS
STOPPED	1	1	64	128	UNCONSTRAINED			512	4	SUCCESS
STOPPED	1	2	64	64	UNCONSTRAINED			512	4	SUCCESS
STOPPED	1	2	64	257	UNCONSTRAINED			512	4	SUCCESS
STOPPED	1	1	64	700	UNCONSTRAINED			512	4	FAIL

¿@wido @weizhouapache @ravening @GabrielBrascher , can you guys look at this please?

In this PR: #4341

The functionality was added that the rootDiskSize can be configured in an Offering.

When we scale the VM we should also scale the rootdisk's size if that is bigger in the new offering.

This PR does not seem to do that. We probably want that added as well.

I really like this PR though. Very much welcome!

@wido We already have the API resizeVolume, which is designed to scale the root disk as well as data disks, and it works with VMs in stopped or running states.

This API scaleVirtualMachine was first designed to scale computing resources (memory, cpuNumber and cpuSpeed). I think we should not mix these two concepts here.

@wido We already have the API resizeVolume, which is designed to scale the root disk as well as data disks, and it works with VMs in stopped or running states.

This API scaleVirtualMachine was first designed to scale computing resources (memory, cpuNumber and cpuSpeed). I think we should not mix these two concepts here.

After reading the code and comments from @GabrielBrascher I understand this code only works with custom service offerings, correct?

If so, please disregard my comments.

Otherwise, with PR #4341 merged we now have the option to make the root disk size a condition of the service offering. Thus when changing the offering one needs to make sure that the root disk is also resized according to the new offering.

Can anyone review this?

As every variable declared in interfaces are already final, this moving will be needed to mock tests in nexts commits

The values are according to service offering or global configs

Improve libvirt def

@DaanHoogland a Jenkins job has been kicked to build packages. I'll keep you posted as I make progress.

Packaging result: ✔️ el7 ✔️ el8 ✔️ debian. SL-JID 838

@blueorangutan test

@DaanHoogland a Trillian-Jenkins test job (centos7 mgmt + kvm-centos7) has been kicked to run smoke tests

Trillian test result (tid-1601)
Environment: kvm-centos7 (x2), Advanced Networking with Mgmt server 7
Total time taken: 48404 seconds
Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr4878-t1601-kvm-centos7.zip
Intermittent failure detected: /marvin/tests/smoke/test_diagnostics.py
Intermittent failure detected: /marvin/tests/smoke/test_domain_service_offerings.py
Intermittent failure detected: /marvin/tests/smoke/test_internal_lb.py
Intermittent failure detected: /marvin/tests/smoke/test_kubernetes_clusters.py
Intermittent failure detected: /marvin/tests/smoke/test_primary_storage.py
Intermittent failure detected: /marvin/tests/smoke/test_service_offerings.py
Intermittent failure detected: /marvin/tests/smoke/test_snapshots.py
Intermittent failure detected: /marvin/tests/smoke/test_usage.py
Intermittent failure detected: /marvin/tests/smoke/test_vm_deployment_planner.py
Intermittent failure detected: /marvin/tests/smoke/test_vm_life_cycle.py
Intermittent failure detected: /marvin/tests/smoke/test_volumes.py
Smoke tests completed. 80 look OK, 8 have error(s)
Only failed tests results shown below:

Test	Result	Time (s)	Test File
test_01_add_primary_storage_disabled_host	Error	0.14	test_primary_storage.py
test_03_migration_options_storage_tags	Error	0.01	test_primary_storage.py
test_01_internallb_roundrobin_1VPC_3VM_HTTP_port80	Failure	448.37	test_internal_lb.py
test_02_internallb_roundrobin_1RVPC_3VM_HTTP_port80	Failure	542.12	test_internal_lb.py
test_01_invalid_upgrade_kubernetes_cluster	Failure	670.76	test_kubernetes_clusters.py
test_02_deploy_and_upgrade_kubernetes_cluster	Failure	78.29	test_kubernetes_clusters.py
test_03_deploy_and_scale_kubernetes_cluster	Failure	66.51	test_kubernetes_clusters.py
test_04_basic_lifecycle_kubernetes_cluster	Failure	59.36	test_kubernetes_clusters.py
test_05_delete_kubernetes_cluster	Failure	76.61	test_kubernetes_clusters.py
test_07_deploy_kubernetes_ha_cluster	Failure	0.21	test_kubernetes_clusters.py
test_08_deploy_and_upgrade_kubernetes_ha_cluster	Failure	3.22	test_kubernetes_clusters.py
test_09_delete_kubernetes_ha_cluster	Failure	0.24	test_kubernetes_clusters.py
ContextSuite context=TestKubernetesCluster>:teardown	Error	173.56	test_kubernetes_clusters.py
ContextSuite context=TestCpuCapServiceOfferings>:setup	Error	0.00	test_service_offerings.py
test_02_list_snapshots_with_removed_data_store	Error	0.27	test_snapshots.py
ContextSuite context=TestSnapshotUsage>:setup	Error	150.40	test_usage.py
test_01_deploy_vm_on_specific_host	Error	1.13	test_vm_deployment_planner.py
test_04_deploy_vm_on_host_override_pod_and_cluster	Error	1.65	test_vm_deployment_planner.py
test_01_secure_vm_migration	Error	85.92	test_vm_life_cycle.py
test_02_unsecure_vm_migration	Error	225.57	test_vm_life_cycle.py
test_04_nonsecured_to_secured_vm_migration	Error	148.24	test_vm_life_cycle.py
test_08_migrate_vm	Error	0.05	test_vm_life_cycle.py

@GutoVeronezi overall it looks good. I've raised a few points to change in regards to the Source code header to meet the Apache license for Apache's projects.

Please check the Copyright

Please check the Copyright

@GutoVeronezi I think that these source code headers need to be updated removing Copyright as we discussed in another PR (sorry but I forgot which one xD)

Manual tests LGTM.
I will "officially" approve when the license headers are updated 👍 .

@GabrielBrascher done, thanks.

Thanks for the PR, @GutoVeronezi.
LGTM, based on manual tests and code review.

@blueorangutan package

@DaanHoogland a Jenkins job has been kicked to build packages. I'll keep you posted as I make progress.

Packaging result: ✔️ el7 ✔️ el8 ✔️ debian ✔️ suse15. SL-JID 952

@blueorangutan test

@DaanHoogland a Trillian-Jenkins test job (centos7 mgmt + kvm-centos7) has been kicked to run smoke tests

Trillian test result (tid-1736)
Environment: kvm-centos7 (x2), Advanced Networking with Mgmt server 7
Total time taken: 33654 seconds
Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr4878-t1736-kvm-centos7.zip
Intermittent failure detected: /marvin/tests/smoke/test_snapshots.py
Smoke tests completed. 89 look OK, 0 have error(s)
Only failed tests results shown below:

Test	Result	Time (s)	Test File

DaanHoogland added this to the 4.16.0.0 milestone Mar 29, 2021

GutoVeronezi marked this pull request as draft April 1, 2021 13:07

GutoVeronezi changed the title Support vm dynamic scalling with kvm Support vm dynamic scaling with kvm Apr 7, 2021

GutoVeronezi closed this Apr 7, 2021

GutoVeronezi deleted the support-vm-dynamic-scalling-with-kvm branch April 7, 2021 13:45

GutoVeronezi restored the support-vm-dynamic-scalling-with-kvm branch April 7, 2021 13:46

GutoVeronezi reopened this Apr 7, 2021

GutoVeronezi marked this pull request as ready for review April 7, 2021 15:24

wido requested a review from GabrielBrascher April 7, 2021 15:43

GabrielBrascher reviewed Apr 9, 2021

View reviewed changes

Comment thread server/src/main/java/com/cloud/hypervisor/KVMGuru.java Resolved

fdalsotto reviewed Apr 12, 2021

View reviewed changes

Comment thread utils/src/main/java/org/apache/cloudstack/utils/bytescale/ByteScaleUtils.java Resolved

GutoVeronezi force-pushed the support-vm-dynamic-scalling-with-kvm branch from 3006d61 to a087de9 Compare April 19, 2021 22:48

GutoVeronezi requested a review from GabrielBrascher April 19, 2021 22:50

GutoVeronezi force-pushed the support-vm-dynamic-scalling-with-kvm branch from a087de9 to 3ac82ba Compare April 27, 2021 18:31

Daniel Augusto Veronezi Salvador added 11 commits May 31, 2021 13:02

Create utility to centralize byte convertions

cbdf98f

Add/change toString definitions

425ccde

Create Libvirt handler to ScaleVmCommand

a6bd180

Enable dynamic scalling VM with KVM

cc29fd2

Move config from interface to class and rename it

125fbc0

As every variable declared in interfaces are already final, this moving will be needed to mock tests in nexts commits

Configure VM max memory and cpu cores

3290905

The values are according to service offering or global configs

Extract dpdk configuration to a method and test it

8e5632d

Extract OS desc config to a method and test it

e970e33

Extract guest resource def to a method and test it

95d7e91

Improve libvirt def

Refactor LibvirtVMDef.GuestResourceDef

b4587c9

Refactor ScaleVmCommand

e9e2149

Add RuntimeException check

4cde5e3

GutoVeronezi force-pushed the support-vm-dynamic-scalling-with-kvm branch from e5ab57c to 4cde5e3 Compare August 17, 2021 12:17

Merge branch 'main' into support-vm-dynamic-scalling-with-kvm

c970aa5

GabrielBrascher reviewed Aug 19, 2021

View reviewed changes

GutoVeronezi added 6 commits August 19, 2021 16:36

Remove copyright from header

ac1f2f8

Remove copyright from header

267ebab

Remove copyright from header

40bb25a

Remove copyright from header

9ab2036

Remove copyright from header

b3c65f0

Update ByteScaleUtilsTest.java

a7ad61b

GutoVeronezi requested a review from GabrielBrascher August 19, 2021 19:39

GabrielBrascher approved these changes Aug 19, 2021

View reviewed changes

DaanHoogland merged commit 8a16729 into apache:main Aug 21, 2021

DaanHoogland mentioned this pull request Oct 8, 2021

Support for KVM dynamic scaling #3594

Closed

harikrishna-patnala mentioned this pull request Nov 22, 2021

UI: show button for dynamic Scaling for VM in case of KVM hypervisor #5703

Merged

2 of 12 tasks

weizhouapache mentioned this pull request Jan 17, 2023

A running vm cannot dynamically scale cpu and memory. It can be expanded when stopped #6865

Closed

DaanHoogland removed the status:needs-testing label Jan 28, 2026

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		/*
		* Copyright 2021 The Apache Software Foundation.

		@@ -0,0 +1,246 @@
		/*
		* Copyright 2021 The Apache Software Foundation.

		@@ -0,0 +1,105 @@
		/*
		* Copyright 2021 The Apache Software Foundation.

		@@ -0,0 +1,45 @@
		/*
		* Copyright 2021 The Apache Software Foundation.

Support vm dynamic scaling with kvm by GutoVeronezi · Pull Request #4878 · apache/cloudstack · GitHub

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Support vm dynamic scaling with kvm - #4878

Support vm dynamic scaling with kvm#4878DaanHoogland merged 42 commits intoapache:mainapache/cloudstack:mainfrom GutoVeronezi:support-vm-dynamic-scalling-with-kvmGutoVeronezi/cloudstack:support-vm-dynamic-scalling-with-kvmCopy head branch name to clipboard

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GutoVeronezi commented Mar 26, 2021

Description

Types of changes

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

How Has This Been Tested?

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Support vm dynamic scaling with kvm#4878
DaanHoogland merged 42 commits into
apache:mainfrom
GutoVeronezi:support-vm-dynamic-scalling-with-kvm

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