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Speed up PV provisioning for vsphere driver
Speeds up PV provisioning for vSphere driver by using bulk fetching of hosts and reversing logic that fetches datastores Add warning about fetching hosts individually
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staging/src/k8s.io/legacy-cloud-providers/vsphere/shared_datastore.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,209 @@ | ||
| // +build !providerless | ||
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| /* | ||
| Copyright 2021 The Kubernetes Authors. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
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| package vsphere | ||
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| import ( | ||
| "context" | ||
| "fmt" | ||
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| "github.com/vmware/govmomi/property" | ||
| "github.com/vmware/govmomi/vim25/mo" | ||
| "github.com/vmware/govmomi/vim25/types" | ||
| "k8s.io/klog/v2" | ||
| "k8s.io/legacy-cloud-providers/vsphere/vclib" | ||
| ) | ||
|
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| type sharedDatastore struct { | ||
| nodeManager *NodeManager | ||
| candidateDatastores []*vclib.DatastoreInfo | ||
| } | ||
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| type hostInfo struct { | ||
| hostUUID string | ||
| hostMOID string | ||
| datacenter string | ||
| } | ||
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| const ( | ||
| summary = "summary" | ||
| runtimeHost = "summary.runtime.host" | ||
| hostsProperty = "host" | ||
| nameProperty = "name" | ||
| ) | ||
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| func (shared *sharedDatastore) getSharedDatastore(ctcx context.Context) (*vclib.DatastoreInfo, error) { | ||
| nodes := shared.nodeManager.getNodes() | ||
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| // Segregate nodes according to VC-DC | ||
| dcNodes := make(map[string][]NodeInfo) | ||
| nodeHosts := make(map[string]hostInfo) | ||
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| for nodeName, node := range nodes { | ||
| nodeInfo, err := shared.nodeManager.GetNodeInfoWithNodeObject(node) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("unable to find node %s: %v", nodeName, err) | ||
| } | ||
| vcDC := nodeInfo.vcServer + nodeInfo.dataCenter.String() | ||
| dcNodes[vcDC] = append(dcNodes[vcDC], nodeInfo) | ||
| } | ||
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| for vcDC, nodes := range dcNodes { | ||
| var hostInfos []hostInfo | ||
| var err error | ||
| hostInfos, err = shared.getNodeHosts(ctcx, nodes, vcDC) | ||
| if err != nil { | ||
| if vclib.IsManagedObjectNotFoundError(err) { | ||
| klog.Warningf("SharedHost.getSharedDatastore: batch fetching of hosts failed - switching to fetching them individually.") | ||
| hostInfos, err = shared.getEachNodeHost(ctcx, nodes, vcDC) | ||
| if err != nil { | ||
| klog.Errorf("SharedHost.getSharedDatastore: error fetching node hosts individually: %v", err) | ||
| return nil, err | ||
| } | ||
| } else { | ||
| return nil, err | ||
| } | ||
| } | ||
| for _, host := range hostInfos { | ||
| hostDCName := fmt.Sprintf("%s/%s", host.datacenter, host.hostMOID) | ||
| nodeHosts[hostDCName] = host | ||
| } | ||
| } | ||
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| if len(nodeHosts) < 1 { | ||
| msg := fmt.Sprintf("SharedHost.getSharedDatastore unable to find hosts associated with nodes") | ||
| klog.Error(msg) | ||
| return nil, fmt.Errorf("") | ||
| } | ||
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| for _, datastoreInfo := range shared.candidateDatastores { | ||
| dataStoreHosts, err := shared.getAttachedHosts(ctcx, datastoreInfo.Datastore) | ||
| if err != nil { | ||
| msg := fmt.Sprintf("error finding attached hosts to datastore %s: %v", datastoreInfo.Name(), err) | ||
| klog.Error(msg) | ||
| return nil, fmt.Errorf(msg) | ||
| } | ||
| if shared.isIncluded(dataStoreHosts, nodeHosts) { | ||
| return datastoreInfo, nil | ||
| } | ||
| } | ||
| return nil, fmt.Errorf("SharedHost.getSharedDatastore: unable to find any shared datastores") | ||
| } | ||
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| // check if all of the nodeHosts are included in the dataStoreHosts | ||
| func (shared *sharedDatastore) isIncluded(dataStoreHosts []hostInfo, nodeHosts map[string]hostInfo) bool { | ||
| result := true | ||
| for _, host := range nodeHosts { | ||
| hostFound := false | ||
| for _, targetHost := range dataStoreHosts { | ||
| if host.hostUUID == targetHost.hostUUID && host.hostMOID == targetHost.hostMOID { | ||
| hostFound = true | ||
| } | ||
| } | ||
| if !hostFound { | ||
| result = false | ||
| } | ||
| } | ||
| return result | ||
| } | ||
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| func (shared *sharedDatastore) getEachNodeHost(ctx context.Context, nodes []NodeInfo, dcVC string) ([]hostInfo, error) { | ||
| var hosts []hostInfo | ||
| for _, node := range nodes { | ||
| host, err := node.vm.GetHost(ctx) | ||
| if err != nil { | ||
| klog.Errorf("SharedHost.getEachNodeHost: unable to find host for vm %s: %v", node.vm.InventoryPath, err) | ||
| return nil, err | ||
| } | ||
| hosts = append(hosts, hostInfo{ | ||
| hostUUID: host.Summary.Hardware.Uuid, | ||
| hostMOID: host.Summary.Host.String(), | ||
| datacenter: node.dataCenter.String(), | ||
| }) | ||
| } | ||
| return hosts, nil | ||
| } | ||
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| func (shared *sharedDatastore) getNodeHosts(ctx context.Context, nodes []NodeInfo, dcVC string) ([]hostInfo, error) { | ||
| var vmRefs []types.ManagedObjectReference | ||
| if len(nodes) < 1 { | ||
| return nil, fmt.Errorf("no nodes found for dc-vc: %s", dcVC) | ||
| } | ||
| var nodeInfo NodeInfo | ||
| for _, n := range nodes { | ||
| nodeInfo = n | ||
| vmRefs = append(vmRefs, n.vm.Reference()) | ||
| } | ||
| pc := property.DefaultCollector(nodeInfo.dataCenter.Client()) | ||
| var vmoList []mo.VirtualMachine | ||
| err := pc.Retrieve(ctx, vmRefs, []string{nameProperty, runtimeHost}, &vmoList) | ||
| if err != nil { | ||
| klog.Errorf("SharedHost.getNodeHosts: unable to fetch vms from datacenter %s: %w", nodeInfo.dataCenter.String(), err) | ||
| return nil, err | ||
| } | ||
| var hostMoList []mo.HostSystem | ||
| var hostRefs []types.ManagedObjectReference | ||
| for _, vmo := range vmoList { | ||
| if vmo.Summary.Runtime.Host == nil { | ||
| msg := fmt.Sprintf("SharedHost.getNodeHosts: no host associated with vm %s", vmo.Name) | ||
| klog.Error(msg) | ||
| return nil, fmt.Errorf(msg) | ||
| } | ||
| hostRefs = append(hostRefs, vmo.Summary.Runtime.Host.Reference()) | ||
| } | ||
| pc = property.DefaultCollector(nodeInfo.dataCenter.Client()) | ||
| err = pc.Retrieve(ctx, hostRefs, []string{summary}, &hostMoList) | ||
| if err != nil { | ||
| klog.Errorf("SharedHost.getNodeHosts: unable to fetch hosts from datacenter %s: %w", nodeInfo.dataCenter.String(), err) | ||
| return nil, err | ||
| } | ||
| var hosts []hostInfo | ||
| for _, host := range hostMoList { | ||
| hosts = append(hosts, hostInfo{hostMOID: host.Summary.Host.String(), hostUUID: host.Summary.Hardware.Uuid, datacenter: nodeInfo.dataCenter.String()}) | ||
| } | ||
| return hosts, nil | ||
| } | ||
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| func (shared *sharedDatastore) getAttachedHosts(ctx context.Context, datastore *vclib.Datastore) ([]hostInfo, error) { | ||
| var ds mo.Datastore | ||
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| pc := property.DefaultCollector(datastore.Client()) | ||
| err := pc.RetrieveOne(ctx, datastore.Reference(), []string{hostsProperty}, &ds) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
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| mounts := make(map[types.ManagedObjectReference]types.DatastoreHostMount) | ||
| var refs []types.ManagedObjectReference | ||
| for _, host := range ds.Host { | ||
| refs = append(refs, host.Key) | ||
| mounts[host.Key] = host | ||
| } | ||
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| var hs []mo.HostSystem | ||
| err = pc.Retrieve(ctx, refs, []string{summary}, &hs) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| var hosts []hostInfo | ||
| for _, h := range hs { | ||
| hosts = append(hosts, hostInfo{hostUUID: h.Summary.Hardware.Uuid, hostMOID: h.Summary.Host.String()}) | ||
| } | ||
| return hosts, nil | ||
|
|
||
| } |
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