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

[1450793561]

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

[DaanHoogland]

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?

[1450793561]

@DaanHoogland

CloudStack 4.17.1.0,Is there a repair plan?

[DaanHoogland]

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

[1450793561]

yeh,ok

[weizhouapache]

@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