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ceph-csi/internal/cephfs/driver.go

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/*
Copyright 2018 The Ceph-CSI Authors.
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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"
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)
// Driver contains the default identity,node and controller struct.
type Driver struct {
cd *csicommon.CSIDriver
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is *IdentityServer
ns *NodeServer
cs *ControllerServer
// cas is the CSIAddonsServer where CSI-Addons services are handled
cas *csiaddons.CSIAddonsServer
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}
// NewDriver returns new ceph driver.
func NewDriver() *Driver {
return &Driver{}
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}
// NewIdentityServer initialize a identity server for ceph CSI driver.
func NewIdentityServer(d *csicommon.CSIDriver) *IdentityServer {
return &IdentityServer{
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DefaultIdentityServer: csicommon.NewDefaultIdentityServer(d),
}
}
// NewControllerServer initialize a controller server for ceph CSI driver.
func NewControllerServer(d *csicommon.CSIDriver) *ControllerServer {
return &ControllerServer{
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DefaultControllerServer: csicommon.NewDefaultControllerServer(d),
VolumeLocks: util.NewVolumeLocks(),
SnapshotLocks: util.NewVolumeLocks(),
VolumeGroupLocks: util.NewVolumeLocks(),
OperationLocks: util.NewOperationLock(),
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}
}
// 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(),
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}
return ns
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}
// 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 radosNamespace, if provided for storing CSI specific objects and keys.
if conf.RadosNamespaceCephFS != "" {
fsutil.RadosNamespace = conf.RadosNamespaceCephFS
}
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(conf.InstanceID, fsutil.RadosNamespace)
Make CephFS plugin stateless reusing RADOS based journal scheme This is a part of the stateless set of commits for CephCSI. This commit removes the dependency on config maps to store cephFS provisioned volumes, and instead relies on RADOS based objects and keys, and required CSI VolumeID encoding to detect the provisioned volumes. Changes: - Provide backward compatibility to provisioned volumes by older plugin versions (1.0.0 or older) - Remove Create/Delete support for statically provisioned volumes (fixes #382) - Added namespace support to RADOS OMaps and used the same to store RADOS CSI objects and keys in the CephFS metadata pool - Added support to mention fsname for CephFS provisioning (fixes #359) - Changed field name in CSI Identifier to 'location', to denote a pool or fscid - Updated mounter cache to use new scheme - Required Helm manifests are updated - Required documentation and other manifests are updated - Made driver option 'metadatastorage' as optional, as fresh installs do not need to specify the same Testing done: - Create/Mount/Delete PVC - Create/Delete 5 PVCs - Mount version 1.0.0 PVC - Delete version 1.0.0 PV - Mount Statically defined PV/PVC/Pod - Mount Statically defined version 1.0.0 PV/PVC/Pod - Delete Statically defined version 1.0.0 PV/PVC/Pod - Node restart when mounted to test mountcache - Use InstanceID other than 'default' - RBD basic round of tests, as namespace is added to OMaps - csitest against ceph-fs plugin - NOTE: CephFS plugin still does not detect and address already created volumes but of a different size - Test not providing any value to the metadata storage parameter Signed-off-by: ShyamsundarR <srangana@redhat.com>
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store.SnapJournal = journal.NewCSISnapshotJournalWithNamespace(conf.InstanceID, fsutil.RadosNamespace)
store.VolumeGroupJournal = journal.NewCSIVolumeGroupJournalWithNamespace(
conf.InstanceID,
fsutil.RadosNamespace)
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// Initialize default library driver
fs.cd = csicommon.NewCSIDriver(conf.DriverName, util.DriverVersion, conf.NodeID, conf.InstanceID)
if fs.cd == nil {
log.FatalLogMsg("failed to initialize CSI driver")
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}
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,
})
}
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// Create gRPC servers
fs.is = NewIdentityServer(fs.cd)
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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)
}
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// configure CSI-Addons server and components
err = fs.setupCSIAddonsServer(conf)
if err != nil {
log.FatalLogMsg(err.Error())
}
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server := csicommon.NewNonBlockingGRPCServer()
srv := csicommon.Servers{
IS: fs.is,
CS: fs.cs,
NS: fs.ns,
GS: fs.cs,
}
server.Start(conf.Endpoint, srv, csicommon.MiddlewareServerOptionConfig{
LogSlowOpInterval: conf.LogSlowOpInterval,
})
if conf.EnableProfiling {
go util.StartMetricsServer(conf)
log.DebugLogMsg("Registering profiling handler")
go util.EnableProfiling()
}
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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(csicommon.MiddlewareServerOptionConfig{
LogSlowOpInterval: conf.LogSlowOpInterval,
})
if err != nil {
return fmt.Errorf("failed to start CSI-Addons server: %w", err)
}
return nil
}