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runtime-rs: add support resize_vcpu for cloud-hypervisor
This commit add support of resize_vcpu for cloud-hypervisor using the it's vm resize api. It can support bothof vcpu hotplug and hot unplug. Signed-off-by: Fupan Li <fupan.lfp@antgroup.com>
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@ -681,8 +681,50 @@ impl CloudHypervisorInner {
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Ok(())
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}
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pub(crate) async fn resize_vcpu(&self, old_vcpu: u32, new_vcpu: u32) -> Result<(u32, u32)> {
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Ok((old_vcpu, new_vcpu))
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pub(crate) async fn resize_vcpu(
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&self,
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old_vcpus: u32,
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mut new_vcpus: u32,
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) -> Result<(u32, u32)> {
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info!(
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sl!(),
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"cloud hypervisor resize_vcpu(): {} -> {}", old_vcpus, new_vcpus
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);
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if new_vcpus == 0 {
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return Err(anyhow!("resize to 0 vcpus requested"));
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}
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if new_vcpus > self.config.cpu_info.default_maxvcpus {
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warn!(
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sl!(),
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"Cannot allocate more vcpus than the max allowed number of vcpus. The maximum allowed amount of vcpus will be used instead.");
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new_vcpus = self.config.cpu_info.default_maxvcpus;
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}
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if new_vcpus == old_vcpus {
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return Ok((old_vcpus, new_vcpus));
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}
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let socket = self
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.api_socket
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.as_ref()
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.ok_or("missing socket")
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.map_err(|e| anyhow!(e))?;
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let vmresize = VmResize {
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desired_vcpus: Some(new_vcpus as u8),
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..Default::default()
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};
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cloud_hypervisor_vm_resize(
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socket.try_clone().context("failed to clone socket")?,
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vmresize,
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)
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.await
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.context("resize vcpus")?;
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Ok((old_vcpus, new_vcpus))
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}
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pub(crate) async fn get_pids(&self) -> Result<Vec<u32>> {
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