ceph-csi/internal/cephfs/driver.go
Madhu Rajanna f17ea38736 cephfs: advertise group snapshot capability
Advertise VOLUME_GROUP_SNAPSHOT capability
from the cephfs driver.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2024-03-21 06:16:42 +00:00

238 lines
7.3 KiB
Go

/*
Copyright 2018 The Ceph-CSI 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.
*/
package cephfs
import (
"fmt"
"github.com/ceph/ceph-csi/internal/cephfs/mounter"
"github.com/ceph/ceph-csi/internal/cephfs/store"
fsutil "github.com/ceph/ceph-csi/internal/cephfs/util"
casceph "github.com/ceph/ceph-csi/internal/csi-addons/cephfs"
csiaddons "github.com/ceph/ceph-csi/internal/csi-addons/server"
csicommon "github.com/ceph/ceph-csi/internal/csi-common"
hc "github.com/ceph/ceph-csi/internal/health-checker"
"github.com/ceph/ceph-csi/internal/journal"
"github.com/ceph/ceph-csi/internal/util"
"github.com/ceph/ceph-csi/internal/util/k8s"
"github.com/ceph/ceph-csi/internal/util/log"
"github.com/container-storage-interface/spec/lib/go/csi"
)
// Driver contains the default identity,node and controller struct.
type Driver struct {
cd *csicommon.CSIDriver
is *IdentityServer
ns *NodeServer
cs *ControllerServer
// cas is the CSIAddonsServer where CSI-Addons services are handled
cas *csiaddons.CSIAddonsServer
}
// CSIInstanceID is the instance ID that is unique to an instance of CSI, used when sharing
// ceph clusters across CSI instances, to differentiate omap names per CSI instance.
var CSIInstanceID = "default"
// NewDriver returns new ceph driver.
func NewDriver() *Driver {
return &Driver{}
}
// NewIdentityServer initialize a identity server for ceph CSI driver.
func NewIdentityServer(d *csicommon.CSIDriver) *IdentityServer {
return &IdentityServer{
DefaultIdentityServer: csicommon.NewDefaultIdentityServer(d),
}
}
// NewControllerServer initialize a controller server for ceph CSI driver.
func NewControllerServer(d *csicommon.CSIDriver) *ControllerServer {
return &ControllerServer{
DefaultControllerServer: csicommon.NewDefaultControllerServer(d),
VolumeLocks: util.NewVolumeLocks(),
SnapshotLocks: util.NewVolumeLocks(),
OperationLocks: util.NewOperationLock(),
}
}
// NewNodeServer initialize a node server for ceph CSI driver.
func NewNodeServer(
d *csicommon.CSIDriver,
t string,
kernelMountOptions string,
fuseMountOptions string,
nodeLabels, topology, crushLocationMap map[string]string,
) *NodeServer {
cliReadAffinityMapOptions := util.ConstructReadAffinityMapOption(crushLocationMap)
ns := &NodeServer{
DefaultNodeServer: csicommon.NewDefaultNodeServer(d, t, cliReadAffinityMapOptions, topology, nodeLabels),
VolumeLocks: util.NewVolumeLocks(),
kernelMountOptions: kernelMountOptions,
fuseMountOptions: fuseMountOptions,
healthChecker: hc.NewHealthCheckManager(),
}
return ns
}
// Run start a non-blocking grpc controller,node and identityserver for
// ceph CSI driver which can serve multiple parallel requests.
func (fs *Driver) Run(conf *util.Config) {
var (
err error
nodeLabels, topology, crushLocationMap map[string]string
)
// Configuration
if err = mounter.LoadAvailableMounters(conf); err != nil {
log.FatalLogMsg("cephfs: failed to load ceph mounters: %v", err)
}
// Use passed in instance ID, if provided for omap suffix naming
if conf.InstanceID != "" {
CSIInstanceID = conf.InstanceID
}
if conf.IsNodeServer && k8s.RunsOnKubernetes() {
nodeLabels, err = k8s.GetNodeLabels(conf.NodeID)
if err != nil {
log.FatalLogMsg(err.Error())
}
}
if conf.EnableReadAffinity {
crushLocationMap = util.GetCrushLocationMap(conf.CrushLocationLabels, nodeLabels)
}
// Create an instance of the volume journal
store.VolJournal = journal.NewCSIVolumeJournalWithNamespace(CSIInstanceID, fsutil.RadosNamespace)
store.SnapJournal = journal.NewCSISnapshotJournalWithNamespace(CSIInstanceID, fsutil.RadosNamespace)
// Initialize default library driver
fs.cd = csicommon.NewCSIDriver(conf.DriverName, util.DriverVersion, conf.NodeID)
if fs.cd == nil {
log.FatalLogMsg("failed to initialize CSI driver")
}
if conf.IsControllerServer || !conf.IsNodeServer {
fs.cd.AddControllerServiceCapabilities([]csi.ControllerServiceCapability_RPC_Type{
csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME,
csi.ControllerServiceCapability_RPC_CREATE_DELETE_SNAPSHOT,
csi.ControllerServiceCapability_RPC_EXPAND_VOLUME,
csi.ControllerServiceCapability_RPC_CLONE_VOLUME,
csi.ControllerServiceCapability_RPC_SINGLE_NODE_MULTI_WRITER,
})
fs.cd.AddVolumeCapabilityAccessModes([]csi.VolumeCapability_AccessMode_Mode{
csi.VolumeCapability_AccessMode_MULTI_NODE_MULTI_WRITER,
csi.VolumeCapability_AccessMode_SINGLE_NODE_WRITER,
csi.VolumeCapability_AccessMode_SINGLE_NODE_MULTI_WRITER,
csi.VolumeCapability_AccessMode_SINGLE_NODE_SINGLE_WRITER,
})
fs.cd.AddGroupControllerServiceCapabilities([]csi.GroupControllerServiceCapability_RPC_Type{
csi.GroupControllerServiceCapability_RPC_CREATE_DELETE_GET_VOLUME_GROUP_SNAPSHOT,
})
}
// Create gRPC servers
fs.is = NewIdentityServer(fs.cd)
if conf.IsNodeServer {
topology, err = util.GetTopologyFromDomainLabels(conf.DomainLabels, conf.NodeID, conf.DriverName)
if err != nil {
log.FatalLogMsg(err.Error())
}
fs.ns = NewNodeServer(
fs.cd, conf.Vtype,
conf.KernelMountOptions, conf.FuseMountOptions,
nodeLabels, topology, crushLocationMap,
)
}
if conf.IsControllerServer {
fs.cs = NewControllerServer(fs.cd)
fs.cs.ClusterName = conf.ClusterName
fs.cs.SetMetadata = conf.SetMetadata
}
if !conf.IsControllerServer && !conf.IsNodeServer {
topology, err = util.GetTopologyFromDomainLabels(conf.DomainLabels, conf.NodeID, conf.DriverName)
if err != nil {
log.FatalLogMsg(err.Error())
}
fs.ns = NewNodeServer(
fs.cd, conf.Vtype,
conf.KernelMountOptions, conf.FuseMountOptions,
nodeLabels, topology, crushLocationMap,
)
fs.cs = NewControllerServer(fs.cd)
}
// configure CSI-Addons server and components
err = fs.setupCSIAddonsServer(conf)
if err != nil {
log.FatalLogMsg(err.Error())
}
server := csicommon.NewNonBlockingGRPCServer()
srv := csicommon.Servers{
IS: fs.is,
CS: fs.cs,
NS: fs.ns,
}
server.Start(conf.Endpoint, srv)
if conf.EnableProfiling {
go util.StartMetricsServer(conf)
log.DebugLogMsg("Registering profiling handler")
go util.EnableProfiling()
}
server.Wait()
}
// setupCSIAddonsServer creates a new CSI-Addons Server on the given (URL)
// endpoint. The supported CSI-Addons operations get registered as their own
// services.
func (fs *Driver) setupCSIAddonsServer(conf *util.Config) error {
var err error
fs.cas, err = csiaddons.NewCSIAddonsServer(conf.CSIAddonsEndpoint)
if err != nil {
return fmt.Errorf("failed to create CSI-Addons server: %w", err)
}
// register services
is := casceph.NewIdentityServer(conf)
fs.cas.RegisterService(is)
if conf.IsControllerServer {
fcs := casceph.NewFenceControllerServer()
fs.cas.RegisterService(fcs)
}
// start the server, this does not block, it runs a new go-routine
err = fs.cas.Start()
if err != nil {
return fmt.Errorf("failed to start CSI-Addons server: %w", err)
}
return nil
}