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vmm: Add a 'resize-zone' action to the API actions

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Implement a new VM action called 'resize-zone' allowing the user to
resize one specific memory zone at a time. This relies on all the
preliminary work from the previous commits to resize each virtio-mem
device independently from each others.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf
2020-09-10 17:34:15 +02:00
parent 141df701dd
commit 015c78411e
9 changed files with 194 additions and 5 deletions
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24
vmm/src/api/mod.rs
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@@ -109,6 +109,9 @@ pub enum ApiError {
/// The VM could not be resized
VmResize(VmError),
/// The memory zone could not be resized.
VmResizeZone(VmError),
/// The device could not be added to the VM.
VmAddDevice(VmError),
@@ -156,6 +159,12 @@ pub struct VmResizeData {
pub desired_ram_w_balloon: Option<u64>,
}
#[derive(Clone, Deserialize, Serialize, Default)]
pub struct VmResizeZoneData {
pub id: String,
pub desired_ram: u64,
}
#[derive(Clone, Deserialize, Serialize, Default)]
pub struct VmRemoveDeviceData {
pub id: String,
@@ -236,6 +245,9 @@ pub enum ApiRequest {
/// Resize the VM.
VmResize(Arc<VmResizeData>, Sender<ApiResponse>),
/// Resize the memory zone.
VmResizeZone(Arc<VmResizeZoneData>, Sender<ApiResponse>),
/// Add a device to the VM.
VmAddDevice(Arc<DeviceConfig>, Sender<ApiResponse>),
@@ -331,6 +343,9 @@ pub enum VmAction {
/// Resize VM
Resize(Arc<VmResizeData>),
/// Resize memory zone
ResizeZone(Arc<VmResizeZoneData>),
/// Restore VM
Restore(Arc<RestoreConfig>),
@@ -362,6 +377,7 @@ fn vm_action(
AddVsock(v) => ApiRequest::VmAddVsock(v, response_sender),
RemoveDevice(v) => ApiRequest::VmRemoveDevice(v, response_sender),
Resize(v) => ApiRequest::VmResize(v, response_sender),
ResizeZone(v) => ApiRequest::VmResizeZone(v, response_sender),
Restore(v) => ApiRequest::VmRestore(v, response_sender),
Snapshot(v) => ApiRequest::VmSnapshot(v, response_sender),
};
@@ -478,6 +494,14 @@ pub fn vm_resize(
vm_action(api_evt, api_sender, VmAction::Resize(data))
}
pub fn vm_resize_zone(
api_evt: EventFd,
api_sender: Sender<ApiRequest>,
data: Arc<VmResizeZoneData>,
) -> ApiResult<Option<Body>> {
vm_action(api_evt, api_sender, VmAction::ResizeZone(data))
}
pub fn vm_add_device(
api_evt: EventFd,
api_sender: Sender<ApiRequest>,