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

Questrion:

A running vm cannot dynamically scale cpu and memory.It's done when stopped

log detail

2022-11-02 14:44:13,311 INFO  [c.c.c.ClusterManagerImpl] (Cluster-Heartbeat-1:ctx-57dd945c) (logid:00501acf) Management node 1 is detected inactive by timestamp but is pingable
2022-11-02 14:44:13,629 DEBUG [c.c.a.ApiServlet] (qtp1462044018-848:ctx-5aeed521) (logid:1b967db1) ===START===  10.10.130.13 -- GET  virtualmachineid=beb97c61-bf41-4b38-ad74-1c65f6c5b125&keyword=&page=1&pageSize=10&details=min&response=json&command=listServiceOfferings
2022-11-02 14:44:13,649 DEBUG [c.c.a.ApiServer] (qtp1462044018-848:ctx-5aeed521 ctx-f8220033) (logid:1b967db1) CIDRs from which account 'Acct[2135826d-4dcd-11ed-89f1-02e685806f48-admin] -- Account {"id": 2, "name": "admin", "uuid": "2135826d-4dcd-11ed-89f1-02e685806f48"}' is allowed to perform API calls: 0.0.0.0/0,::/0
2022-11-02 14:44:13,663 WARN  [c.c.a.d.ParamGenericValidationWorker] (qtp1462044018-848:ctx-5aeed521 ctx-f8220033) (logid:1b967db1) Received unknown parameters for command listServiceOfferings. Unknown parameters : details

@1450793561

yes @1450793561 , this is a known limitation. I thought we had made sure the button was greyed or even omitted when the VM is running. What version did you encounter this with?

@DaanHoogland

@DaanHoogland

CloudStack 4.17.1.0,Is there a repair plan?

@1450793561

@1450793561 I don´t know if it is on someones schedule, so i'm afraid not.

yeh,ok

@1450793561

@1450793561
as @DaanHoogland mentioned, this is a known limitation, introduced by #4878
the UI change was introduced in #5923

        if (vmHypervisorType.equals(HypervisorType.KVM) && !currentServiceOffering.isDynamic()) {
            String message = String.format("Unable to live scale VM on KVM when current service offering is a \"Fixed Offering\". KVM needs the tag \"maxMemory\" to live scale and it is only configured when VM is deployed with a custom service offering and \"Dynamic Scalable\" is enabled.");
            s_logger.info(message);
            throw new InvalidParameterValueException(message);

maybe @GutoVeronezi can have a look to see if it is possible to improve it in the future.
for example, scale a running vm on kvm from a fixed offering to another fixed offering

@bernardodemarco

@bernardodemarco any updates on this? (as in will it make any of the upcoming releases 20.2 or 22?) ((happy to move it to 23 if nobody has time to implement))

@DaanHoogland

Hello, @DaanHoogland

@bernardodemarco any updates on this?

Yes, I've started implementing it in the past few days. I'm not sure it'll be ready for the 4.22.0 release, but I'll try

@bernardodemarco

@bernardodemarco
any update on this ?

@weizhouapache

Hello, @weizhouapache

Sorry for the delay, I was on vacation. I'll try to open the PR, along with the feature's specification, until the end of this month.

Hello, all

I have just published the feature specification in #12908. Please feel free to review it and share your thoughts.

I will aim to open the PR at the beginning of next week.

Best regards,
Bernardo De Marco Gonçalves

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

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

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DaanHoogland commented on Nov 7, 2022

1450793561 commented on Nov 8, 2022

DaanHoogland commented on Nov 8, 2022

1450793561 commented on Nov 9, 2022

weizhouapache commented on Jan 17, 2023

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DaanHoogland commented on Sep 18, 2025

bernardodemarco commented on Sep 18, 2025

weizhouapache commented on Dec 18, 2025

bernardodemarco commented on Jan 8, 2026

bernardodemarco commented on Mar 27, 2026

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