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nfs: add nodeserver within cephcsi

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This commit adds nfs nodeserver capable of
mounting nfs volumes, even with pod networking
using NSenter design similar to rbd and cephfs.
NodePublish, NodeUnpublish, NodeGetVolumeStats
and NodeGetCapabilities have been implemented.

The nodeserver implementation has been inspired
from https://github.com/kubernetes-csi/csi-driver-nfs,
which was previously used for mounted cephcsi exported
nfs volumes. The current implementation is also
backward compatible for the previously created
PVCs.

Signed-off-by: Rakshith R <rar@redhat.com>
This commit is contained in:
Rakshith R
2022-07-26 15:34:57 +05:30
committed by mergify[bot]
parent c2280011d1
commit 3d3c029471
6 changed files with 576 additions and 15 deletions
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43
internal/nfs/driver/driver.go
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@ -20,6 +20,7 @@ import (
csicommon "github.com/ceph/ceph-csi/internal/csi-common"
"github.com/ceph/ceph-csi/internal/nfs/controller"
"github.com/ceph/ceph-csi/internal/nfs/identity"
"github.com/ceph/ceph-csi/internal/nfs/nodeserver"
"github.com/ceph/ceph-csi/internal/util"
"github.com/ceph/ceph-csi/internal/util/log"
@ -43,27 +44,39 @@ func (fs *Driver) Run(conf *util.Config) {
log.FatalLogMsg("failed to initialize CSI driver")
}
cd.AddControllerServiceCapabilities([]csi.ControllerServiceCapability_RPC_Type{
csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME,
csi.ControllerServiceCapability_RPC_SINGLE_NODE_MULTI_WRITER,
csi.ControllerServiceCapability_RPC_EXPAND_VOLUME,
csi.ControllerServiceCapability_RPC_CREATE_DELETE_SNAPSHOT,
csi.ControllerServiceCapability_RPC_CLONE_VOLUME,
})
// VolumeCapabilities are validated by the CephFS Controller
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,
})
if conf.IsControllerServer || !conf.IsNodeServer {
cd.AddControllerServiceCapabilities([]csi.ControllerServiceCapability_RPC_Type{
csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME,
csi.ControllerServiceCapability_RPC_SINGLE_NODE_MULTI_WRITER,
csi.ControllerServiceCapability_RPC_EXPAND_VOLUME,
csi.ControllerServiceCapability_RPC_CREATE_DELETE_SNAPSHOT,
csi.ControllerServiceCapability_RPC_CLONE_VOLUME,
})
// VolumeCapabilities are validated by the CephFS Controller
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,
})
}
// Create gRPC servers
server := csicommon.NewNonBlockingGRPCServer()
srv := csicommon.Servers{
IS: identity.NewIdentityServer(cd),
CS: controller.NewControllerServer(cd),
}
switch {
case conf.IsNodeServer:
srv.NS = nodeserver.NewNodeServer(cd, conf.Vtype)
case conf.IsControllerServer:
srv.CS = controller.NewControllerServer(cd)
default:
srv.NS = nodeserver.NewNodeServer(cd, conf.Vtype)
srv.CS = controller.NewControllerServer(cd)
}
server.Start(conf.Endpoint, conf.HistogramOption, srv, conf.EnableGRPCMetrics)
if conf.EnableGRPCMetrics {
log.WarningLogMsg("EnableGRPCMetrics is deprecated")