cephfs: volumes are now created for separate ceph users with limited access to fs

Uses a slightly modified version of https://github.com/kubernetes-incubator/external-storage/blob/master/ceph/cephfs/cephfs_provisioner/cephfs_provisioner.py
This should be rewritten properly in Go, but for it works for now - for demonstration purposes

TODO:
* readOnly is not taken into account
* controllerServer.DeleteVolume does nothing

deploy/cephfs/docker/Dockerfile

@@ -5,9 +5,10 @@ LABEL description="CephFS CSI Plugin"
 ENV CEPH_VERSION "luminous"
 
 RUN apt-get update && \
-    apt-get install -y ceph-fuse attr && \
+    apt-get install -y ceph-common ceph-fuse && \
-     apt-get autoremove
+    rm -rf /var/lib/apt/lists/*
 
 COPY cephfsplugin /cephfsplugin
-RUN chmod +x /cephfsplugin
+COPY cephfs_provisioner.py /cephfs_provisioner.py
+RUN chmod +x /cephfsplugin && chmod +x /cephfs_provisioner.py
 ENTRYPOINT ["/cephfsplugin"]

deploy/cephfs/docker/cephfs_provisioner.py

@@ -0,0 +1,332 @@
+#!/usr/bin/env python
+
+# Copyright 2017 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.
+
+import os
+import rados
+import getopt
+import sys
+import json
+
+"""
+CEPH_CLUSTER_NAME=test CEPH_MON=172.24.0.4 CEPH_AUTH_ID=admin CEPH_AUTH_KEY=AQCMpH9YM4Q1BhAAXGNQyyOne8ZsXqWGon/dIQ== cephfs_provisioner.py -n foo -u bar
+"""
+try:
+    import ceph_volume_client
+    ceph_module_found = True
+except ImportError as e:
+    ceph_volume_client = None
+    ceph_module_found = False
+
+VOlUME_GROUP="kubernetes"
+CONF_PATH="/etc/ceph/"
+
+class CephFSNativeDriver(object):
+    """Driver for the Ceph Filesystem.
+
+    This driver is 'native' in the sense that it exposes a CephFS filesystem
+    for use directly by guests, with no intermediate layer like NFS.
+    """
+
+    def __init__(self, *args, **kwargs):
+        self._volume_client = None
+
+
+    def _create_conf(self, cluster_name, mons):
+        """ Create conf using monitors
+        Create a minimal ceph conf with monitors and cephx
+        """
+        conf_path = CONF_PATH + cluster_name + ".conf"
+        if not os.path.isfile(conf_path) or os.access(conf_path, os.W_OK):
+            conf = open(conf_path, 'w')
+            conf.write("[global]\n")
+            conf.write("mon_host = " + mons + "\n")
+            conf.write("auth_cluster_required = cephx\nauth_service_required = cephx\nauth_client_required = cephx\n")
+            conf.close()
+        return conf_path
+
+    def _create_keyring(self, cluster_name, id, key):
+        """ Create client keyring using id and key
+        """
+        keyring_path = CONF_PATH + cluster_name + "." + "client." + id + ".keyring"
+        if not os.path.isfile(keyring_path) or os.access(keyring_path, os.W_OK):
+            keyring = open(keyring_path, 'w')
+            keyring.write("[client." + id + "]\n")
+            keyring.write("key = " + key  + "\n")
+            keyring.write("caps mds = \"allow *\"\n")
+            keyring.write("caps mon = \"allow *\"\n")
+            keyring.write("caps osd = \"allow *\"\n")
+            keyring.close()
+
+    @property
+    def volume_client(self):
+        if self._volume_client:
+            return self._volume_client
+
+        if not ceph_module_found:
+            raise ValueError("Ceph client libraries not found.")
+
+        try:
+            cluster_name = os.environ["CEPH_CLUSTER_NAME"]
+        except KeyError:
+            cluster_name = "ceph"
+        try:     
+            mons = os.environ["CEPH_MON"]
+        except KeyError:
+            raise ValueError("Missing CEPH_MON env")
+        try:
+            auth_id = os.environ["CEPH_AUTH_ID"]
+        except KeyError:
+            raise ValueError("Missing CEPH_AUTH_ID")
+        try: 
+            auth_key = os.environ["CEPH_AUTH_KEY"]
+        except:
+            raise ValueError("Missing CEPH_AUTH_KEY")
+
+        conf_path = self._create_conf(cluster_name, mons)
+        self._create_keyring(cluster_name, auth_id, auth_key)
+
+        self._volume_client = ceph_volume_client.CephFSVolumeClient(
+            auth_id, conf_path, cluster_name)
+        try:
+            self._volume_client.connect(None)
+        except Exception:
+            self._volume_client = None
+            raise
+
+        return self._volume_client
+
+    def _authorize_ceph(self, volume_path, auth_id, readonly):
+        path = self._volume_client._get_path(volume_path)
+
+        # First I need to work out what the data pool is for this share:
+        # read the layout
+        pool_name = self._volume_client._get_ancestor_xattr(path, "ceph.dir.layout.pool")
+        namespace = self._volume_client.fs.getxattr(path, "ceph.dir.layout.pool_namespace")
+
+        # Now construct auth capabilities that give the guest just enough
+        # permissions to access the share
+        client_entity = "client.{0}".format(auth_id)
+        want_access_level = 'r' if readonly else 'rw'
+        want_mds_cap = 'allow r,allow {0} path={1}'.format(want_access_level, path)
+        want_osd_cap = 'allow {0} pool={1} namespace={2}'.format(
+            want_access_level, pool_name, namespace)
+
+        try:
+            existing = self._volume_client._rados_command(
+                'auth get',
+                {
+                    'entity': client_entity
+                }
+            )
+            # FIXME: rados raising Error instead of ObjectNotFound in auth get failure
+        except rados.Error:
+            caps = self._volume_client._rados_command(
+                'auth get-or-create',
+                {
+                    'entity': client_entity,
+                    'caps': [
+                        'mds', want_mds_cap,
+                        'osd', want_osd_cap,
+                        'mon', 'allow r']
+                })
+        else:
+            # entity exists, update it
+            cap = existing[0]
+
+            # Construct auth caps that if present might conflict with the desired
+            # auth caps.
+            unwanted_access_level = 'r' if want_access_level is 'rw' else 'rw'
+            unwanted_mds_cap = 'allow {0} path={1}'.format(unwanted_access_level, path)
+            unwanted_osd_cap = 'allow {0} pool={1} namespace={2}'.format(
+                unwanted_access_level, pool_name, namespace)
+
+            def cap_update(orig, want, unwanted):
+                # Updates the existing auth caps such that there is a single
+                # occurrence of wanted auth caps and no occurrence of
+                # conflicting auth caps.
+
+                cap_tokens = set(orig.split(","))
+
+                cap_tokens.discard(unwanted)
+                cap_tokens.add(want)
+
+                return ",".join(cap_tokens)
+
+            osd_cap_str = cap_update(cap['caps'].get('osd', ""), want_osd_cap, unwanted_osd_cap)
+            mds_cap_str = cap_update(cap['caps'].get('mds', ""), want_mds_cap, unwanted_mds_cap)
+
+            caps = self._volume_client._rados_command(
+                'auth caps',
+                {
+                    'entity': client_entity,
+                    'caps': [
+                        'mds', mds_cap_str,
+                        'osd', osd_cap_str,
+                        'mon', cap['caps'].get('mon')]
+                })
+            caps = self._volume_client._rados_command(
+                'auth get',
+                {
+                    'entity': client_entity
+                }
+            )
+
+        # Result expected like this:
+        # [
+        #     {
+        #         "entity": "client.foobar",
+        #         "key": "AQBY0\/pViX\/wBBAAUpPs9swy7rey1qPhzmDVGQ==",
+        #         "caps": {
+        #             "mds": "allow *",
+        #             "mon": "allow *"
+        #         }
+        #     }
+        # ]
+        assert len(caps) == 1
+        assert caps[0]['entity'] == client_entity
+        return caps[0]
+
+    def create_share(self, path, user_id, size=None):
+        """Create a CephFS volume.
+        """
+        volume_path = ceph_volume_client.VolumePath(VOlUME_GROUP, path)
+
+        # Create the CephFS volume
+        volume = self.volume_client.create_volume(volume_path, size=size)
+
+        # To mount this you need to know the mon IPs and the path to the volume
+        mon_addrs = self.volume_client.get_mon_addrs()
+
+        export_location = "{addrs}:{path}".format(
+            addrs=",".join(mon_addrs),
+            path=volume['mount_path'])
+
+        """TODO
+        restrict to user_id
+        """
+        auth_result = self._authorize_ceph(volume_path, user_id, False)
+        ret = {
+            'path': volume['mount_path'],
+            'user': auth_result['entity'],
+            'key': auth_result['key']
+        }
+
+        self._create_keyring(self.volume_client.cluster_name, user_id, auth_result['key'])
+
+        return json.dumps(ret)
+
+    def _deauthorize(self, volume_path, auth_id):
+        """
+        The volume must still exist.
+        NOTE: In our `_authorize_ceph` method we give user extra mds `allow r`
+        cap to work around a kernel cephfs issue. So we need a customized
+        `_deauthorize` method to remove caps instead of using
+        `volume_client._deauthorize`.
+        This methid is modified from
+        https://github.com/ceph/ceph/blob/v13.0.0/src/pybind/ceph_volume_client.py#L1181.
+        """
+        client_entity = "client.{0}".format(auth_id)
+        path = self.volume_client._get_path(volume_path)
+        path = self.volume_client._get_path(volume_path)
+        pool_name = self.volume_client._get_ancestor_xattr(path, "ceph.dir.layout.pool")
+        namespace = self.volume_client.fs.getxattr(path, "ceph.dir.layout.pool_namespace")
+
+        # The auth_id might have read-only or read-write mount access for the
+        # volume path.
+        access_levels = ('r', 'rw')
+        want_mds_caps = {'allow {0} path={1}'.format(access_level, path)
+                         for access_level in access_levels}
+        want_osd_caps = {'allow {0} pool={1} namespace={2}'.format(
+                         access_level, pool_name, namespace)
+                         for access_level in access_levels}
+
+        try:
+            existing = self.volume_client._rados_command(
+                'auth get',
+                {
+                    'entity': client_entity
+                }
+            )
+
+            def cap_remove(orig, want):
+                cap_tokens = set(orig.split(","))
+                return ",".join(cap_tokens.difference(want))
+
+            cap = existing[0]
+            osd_cap_str = cap_remove(cap['caps'].get('osd', ""), want_osd_caps)
+            mds_cap_str = cap_remove(cap['caps'].get('mds', ""), want_mds_caps)
+
+            if (not osd_cap_str) and (not osd_cap_str or mds_cap_str == "allow r"):
+                # If osd caps are removed and mds caps are removed or only have "allow r", we can remove entity safely.
+                self.volume_client._rados_command('auth del', {'entity': client_entity}, decode=False)
+            else:
+                self.volume_client._rados_command(
+                    'auth caps',
+                    {
+                        'entity': client_entity,
+                        'caps': [
+                            'mds', mds_cap_str,
+                            'osd', osd_cap_str,
+                            'mon', cap['caps'].get('mon', 'allow r')]
+                    })
+
+        # FIXME: rados raising Error instead of ObjectNotFound in auth get failure
+        except rados.Error:
+            # Already gone, great.
+            return
+
+    def delete_share(self, path, user_id):
+        volume_path = ceph_volume_client.VolumePath(VOlUME_GROUP, path)
+        self._deauthorize(volume_path, user_id)
+        self.volume_client.delete_volume(volume_path)
+        self.volume_client.purge_volume(volume_path)
+
+    def __del__(self):
+        if self._volume_client:
+            self._volume_client.disconnect()
+            self._volume_client = None
+
+def main():
+    create = True
+    share = ""
+    user = ""
+    cephfs = CephFSNativeDriver()
+    try:
+        opts, args = getopt.getopt(sys.argv[1:], "rn:u:", ["remove"])
+    except getopt.GetoptError:
+        print "Usage: " + sys.argv[0] + " --remove -n share_name -u ceph_user_id"
+        sys.exit(1)
+
+    for opt, arg in opts:
+        if opt == '-n':
+            share = arg
+        elif opt == '-u':
+            user = arg
+        elif opt in ("-r", "--remove"):
+            create = False
+
+    if share == "" or user == "":
+        print "Usage: " + sys.argv[0] + " --remove -n share_name -u ceph_user_id"
+        sys.exit(1)
+
+    if create == True:
+        print cephfs.create_share(share, user)    
+    else:
+        cephfs.delete_share(share, user)    
+        
+        
+if __name__ == "__main__":
+    main()

deploy/cephfs/kubernetes/cephfs-storage-class.yaml

@@ -4,5 +4,9 @@ metadata:
   name: cephfs
 provisioner: cephfsplugin
 parameters:
-  provisionRoot: /cephfs
+  adminID: admin
-reclaimPolicy: Delete 
+  adminSecret: AQCdsp9aaowqEhAAHx5EFnTQBnTU7Dr1UzHwmQ==
+  clusterName: ceph
+  pool: cephfs
+  monitor: 192.168.122.11:6789
+reclaimPolicy: Delete

pkg/cephfs/cephfs.go

@@ -39,8 +39,6 @@ type cephfsDriver struct {
 }
 
 var (
-	provisionRoot = "/cephfs"
-
 	driver  *cephfsDriver
 	version = csi.Version{
 		Minor: 1,

pkg/cephfs/controllerserver.go

@@ -18,8 +18,6 @@ package cephfs
 
 import (
 	"fmt"
-	"os"
-	"path"
 
 	"github.com/golang/glog"
 	"golang.org/x/net/context"
@@ -56,8 +54,6 @@ func (cs *controllerServer) CreateVolume(ctx context.Context, req *csi.CreateVol
 		return nil, err
 	}
 
-	// Configuration
-
 	volOptions, err := newVolumeOptions(req.GetParameters())
 	if err != nil {
 		return nil, err
@@ -70,49 +66,19 @@ func (cs *controllerServer) CreateVolume(ctx context.Context, req *csi.CreateVol
 		volSz = int64(req.GetCapacityRange().GetRequiredBytes())
 	}
 
-	if err := createMountPoint(provisionRoot); err != nil {
+	vol, err := newVolume(volId, volOptions)
-		glog.Errorf("failed to create provision root at %s: %v", provisionRoot, err)
-		return nil, status.Error(codes.Internal, err.Error())
-	}
-
-	// Exec ceph-fuse only if cephfs has not been not mounted yet
-
-	isMnt, err := isMountPoint(provisionRoot)
-
 	if err != nil {
-		glog.Errorf("stat failed: %v", err)
+		glog.Errorf("failed to create a volume: %v", err)
 		return nil, status.Error(codes.Internal, err.Error())
 	}
 
-	if !isMnt {
+	glog.V(4).Infof("cephfs: volume created at %s", vol.Root)
-		if err = mountFuse(provisionRoot); err != nil {
-			glog.Error(err)
-			return nil, status.Error(codes.Internal, err.Error())
-		}
-	}
-
-	// Create a new directory inside the provision root for bind-mounting done by NodePublishVolume
-
-	volPath := path.Join(provisionRoot, volId.id)
-	if err := os.Mkdir(volPath, 0750); err != nil {
-		glog.Errorf("failed to create volume %s: %v", volPath, err)
-		return nil, status.Error(codes.Internal, err.Error())
-	}
-
-	// Set attributes & quotas
-
-	if err = setVolAttributes(volPath, volSz); err != nil {
-		glog.Errorf("failed to set attributes for volume %s: %v", volPath, err)
-		return nil, status.Error(codes.Internal, err.Error())
-	}
-
-	glog.V(4).Infof("cephfs: created volume %s", volPath)
 
 	return &csi.CreateVolumeResponse{
 		VolumeInfo: &csi.VolumeInfo{
 			Id:            volId.id,
 			CapacityBytes: uint64(volSz),
-			Attributes:    req.GetParameters(),
+			Attributes:    vol.makeMap(),
 		},
 	}, nil
 }
@@ -123,28 +89,11 @@ func (cs *controllerServer) DeleteVolume(ctx context.Context, req *csi.DeleteVol
 		return nil, err
 	}
 
-	volId := req.GetVolumeId()
+	// TODO
-	volPath := path.Join(provisionRoot, volId)
-
-	glog.V(4).Infof("deleting volume %s", volPath)
-
-	if err := deleteVolumePath(volPath); err != nil {
-		glog.Errorf("failed to delete volume %s: %v", volPath, err)
-		return nil, err
-	}
 
 	return &csi.DeleteVolumeResponse{}, nil
 }
 
 func (cs *controllerServer) ValidateVolumeCapabilities(ctx context.Context, req *csi.ValidateVolumeCapabilitiesRequest) (*csi.ValidateVolumeCapabilitiesResponse, error) {
-	res := &csi.ValidateVolumeCapabilitiesResponse{}
+	return &csi.ValidateVolumeCapabilitiesResponse{Supported: true}, nil
-
-	for _, capability := range req.VolumeCapabilities {
-		if capability.GetAccessMode().GetMode() != csi.VolumeCapability_AccessMode_SINGLE_NODE_WRITER {
-			return res, nil
-		}
-	}
-
-	res.Supported = true
-	return res, nil
 }

pkg/cephfs/nodeserver.go

@@ -18,7 +18,6 @@ package cephfs
 
 import (
 	"context"
-	"path"
 
 	"github.com/golang/glog"
 	"google.golang.org/grpc/codes"
@@ -27,7 +26,6 @@ import (
 	"github.com/container-storage-interface/spec/lib/go/csi"
 	"github.com/kubernetes-csi/drivers/pkg/csi-common"
 	"k8s.io/kubernetes/pkg/util/keymutex"
-	"k8s.io/kubernetes/pkg/util/mount"
 )
 
 type nodeServer struct {
@@ -53,6 +51,16 @@ func validateNodePublishVolumeRequest(req *csi.NodePublishVolumeRequest) error {
 		return status.Error(codes.InvalidArgument, "Target path missing in request")
 	}
 
+	attrs := req.GetVolumeAttributes()
+
+	if _, ok := attrs["path"]; !ok {
+		return status.Error(codes.InvalidArgument, "Missing path attribute")
+	}
+
+	if _, ok := attrs["user"]; !ok {
+		return status.Error(codes.InvalidArgument, "Missing user attribute")
+	}
+
 	return nil
 }
 
@@ -105,20 +113,19 @@ func (ns *nodeServer) NodePublishVolume(ctx context.Context, req *csi.NodePublis
 		return &csi.NodePublishVolumeResponse{}, nil
 	}
 
-	// It's not, do the bind-mount now
+	// It's not, exec ceph-fuse now
 
-	options := []string{"bind"}
+	// TODO honor req.GetReadOnly()
-	if req.GetReadonly() {
-		options = append(options, "ro")
-	}
 
-	volPath := path.Join(provisionRoot, req.GetVolumeId())
+	attrs := req.GetVolumeAttributes()
-	if err := mount.New("").Mount(volPath, targetPath, "", options); err != nil {
+	vol := volume{Root: attrs["path"], User: attrs["user"]}
-		glog.Errorf("bind-mounting %s to %s failed: %v", volPath, targetPath, err)
+
+	if err := vol.mount(targetPath); err != nil {
+		glog.Errorf("mounting volume %s to %s failed: %v", vol.Root, targetPath, err)
 		return nil, status.Error(codes.Internal, err.Error())
 	}
 
-	glog.V(4).Infof("cephfs: volume %s successfuly mounted to %s", volPath, targetPath)
+	glog.V(4).Infof("cephfs: volume %s successfuly mounted to %s", vol.Root, targetPath)
 
 	return &csi.NodePublishVolumeResponse{}, nil
 }
@@ -129,14 +136,13 @@ func (ns *nodeServer) NodeUnpublishVolume(ctx context.Context, req *csi.NodeUnpu
 	}
 
 	volId := req.GetVolumeId()
-	targetPath := req.GetTargetPath()
 
 	if err := tryLock(volId, nsMtx, "NodeServer"); err != nil {
 		return nil, err
 	}
 	defer nsMtx.UnlockKey(volId)
 
-	if err := mount.New("").Unmount(targetPath); err != nil {
+	if err := unmountVolume(req.GetTargetPath()); err != nil {
 		return nil, status.Error(codes.Internal, err.Error())
 	}
 

pkg/cephfs/volume.go

@@ -17,28 +17,74 @@ limitations under the License.
 package cephfs
 
 import (
+	"encoding/json"
 	"fmt"
 	"os"
+	"os/exec"
 )
 
-func createMountPoint(root string) error {
+const (
-	return os.MkdirAll(root, 0750)
+	// from https://github.com/kubernetes-incubator/external-storage/tree/master/ceph/cephfs/cephfs_provisioner
+	provisionerCmd = "/cephfs_provisioner.py"
+	userPrefix     = "user-"
+)
+
+type volume struct {
+	Root string `json:"path"`
+	User string `json:"user"`
+	Key  string `json:"key"`
 }
 
-func deleteVolumePath(volPath string) error {
+func newVolume(volId *volumeIdentifier, volOpts *volumeOptions) (*volume, error) {
-	return os.RemoveAll(volPath)
+	cmd := exec.Command(provisionerCmd, "-n", volId.id, "-u", userPrefix+volId.id)
-}
+	cmd.Env = []string{
+		"CEPH_CLUSTER_NAME=" + volOpts.ClusterName,
+		"CEPH_MON=" + volOpts.Monitor,
+		"CEPH_AUTH_ID=" + volOpts.AdminId,
+		"CEPH_AUTH_KEY=" + volOpts.AdminSecret,
+	}
 
-func mountFuse(root string) error {
+	out, err := cmd.CombinedOutput()
-	out, err := execCommand("ceph-fuse", root)
 	if err != nil {
-		return fmt.Errorf("cephfs: ceph-fuse failed with following error: %v\ncephfs: ceph-fuse output: %s", err, out)
+		return nil, fmt.Errorf("cephfs: an error occurred while creating the volume: %v\ncephfs: %s", err, out)
+	}
+
+	fmt.Printf("\t\tcephfs_provisioner.py: %s\n", out)
+
+	vol := &volume{}
+	if err = json.Unmarshal(out, vol); err != nil {
+		return nil, fmt.Errorf("cephfs: malformed json output: %s", err)
+	}
+
+	return vol, nil
+}
+
+func (vol *volume) mount(mountPoint string) error {
+	out, err := execCommand("ceph-fuse", mountPoint, "-n", vol.User, "-r", vol.Root)
+	if err != nil {
+		return fmt.Errorf("cephfs: ceph-fuse failed with following error: %s\ncephfs: cephf-fuse output: %s", err, out)
 	}
 
 	return nil
 }
 
-func unmountFuse(root string) error {
+func (vol *volume) unmount() error {
+	out, err := execCommand("fusermount", "-u", vol.Root)
+	if err != nil {
+		return fmt.Errorf("cephfs: fusermount failed with following error: %v\ncephfs: fusermount output: %s", err, out)
+	}
+
+	return nil
+}
+
+func (vol *volume) makeMap() map[string]string {
+	return map[string]string{
+		"path": vol.Root,
+		"user": vol.User,
+	}
+}
+
+func unmountVolume(root string) error {
 	out, err := execCommand("fusermount", "-u", root)
 	if err != nil {
 		return fmt.Errorf("cephfs: fusermount failed with following error: %v\ncephfs: fusermount output: %s", err, out)
@@ -47,12 +93,15 @@ func unmountFuse(root string) error {
 	return nil
 }
 
-func setVolAttributes(volPath string /*opts *fsVolumeOptions*/, maxBytes int64) error {
+func deleteVolume(volId, user string) error {
-	out, err := execCommand("setfattr", "-n", "ceph.quota.max_bytes",
+	out, err := execCommand(provisionerCmd, "--remove", "-n", volId, "-u", user)
-		"-v", fmt.Sprintf("%d", maxBytes), volPath)
 	if err != nil {
-		return fmt.Errorf("cephfs: setfattr failed with following error: %v\ncephfs: setfattr output: %s", err, out)
+		return fmt.Errorf("cephfs: failed to delete volume %s following error: %v\ncephfs: output: %s", volId, err, out)
 	}
 
 	return nil
 }
+
+func createMountPoint(root string) error {
+	return os.MkdirAll(root, 0750)
+}

pkg/cephfs/volumeidentifier.go

@@ -31,7 +31,7 @@ func newVolumeIdentifier(volOptions *volumeOptions, req *csi.CreateVolumeRequest
 		uuid: uuid.NewUUID().String(),
 	}
 
-	volId.id = "csi-rbd-" + volId.uuid
+	volId.id = "csi-cephfs-" + volId.uuid
 
 	if volId.name == "" {
 		volId.name = volOptions.Pool + "-dynamic-pvc-" + volId.uuid

pkg/cephfs/volumeoptions.go

@@ -19,9 +19,9 @@ package cephfs
 import "errors"
 
 type volumeOptions struct {
-	VolName     string `json:"volName"`
 	Monitor     string `json:"monitor"`
 	Pool        string `json:"pool"`
+	ClusterName string `json:"clusterName"`
 	AdminId     string `json:"adminID"`
 	AdminSecret string `json:"adminSecret"`
 }
@@ -37,27 +37,26 @@ func extractOption(dest *string, optionLabel string, options map[string]string)
 
 func newVolumeOptions(volOptions map[string]string) (*volumeOptions, error) {
 	var opts volumeOptions
-	// XXX early return - we're not reading credentials from volOptions for now...
+
-	// i'll finish this once ceph-fuse accepts passing credentials through cmd args
+	if err := extractOption(&opts.AdminId, "adminID", volOptions); err != nil {
+		return nil, err
+	}
+
+	if err := extractOption(&opts.AdminSecret, "adminSecret", volOptions); err != nil {
+		return nil, err
+	}
+
+	if err := extractOption(&opts.Monitor, "monitor", volOptions); err != nil {
+		return nil, err
+	}
+
+	if err := extractOption(&opts.Pool, "pool", volOptions); err != nil {
+		return nil, err
+	}
+
+	if err := extractOption(&opts.ClusterName, "clusterName", volOptions); err != nil {
+		return nil, err
+	}
+
 	return &opts, nil
-
-	/*
-		if err := extractOption(&opts.AdminId, "adminID", volOptions); err != nil {
-			return nil, err
-		}
-
-		if err := extractOption(&opts.AdminSecret, "adminSecret", volOptions); err != nil {
-			return nil, err
-		}
-
-		if err := extractOption(&opts.Monitors, "monitors", volOptions); err != nil {
-			return nil, err
-		}
-
-		if err := extractOption(&opts.Pool, "pool", volOptions); err != nil {
-			return nil, err
-		}
-
-		return &opts, nil
-	*/
 }