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Add mount options support in CephFS CSI driver

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Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
This commit is contained in:
Humble Chirammal 2019-06-06 17:48:11 +05:30
parent dc04362ac5
commit 4be3943713
4 changed files with 36 additions and 5 deletions
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2
examples/cephfs/storageclass.yaml
View File

@ -40,3 +40,5 @@ parameters:
# --volumemounter command-line argument.
# mounter: kernel
reclaimPolicy: Delete
mountOptions:
- noexec

4
pkg/cephfs/mountcache.go
View File

@ -137,9 +137,11 @@ func mountOneCacheEntry(ce *controllerCacheEntry, me *volumeMountCacheEntry) err
return err
}
}
mountOptions := []string{"bind"}
for targetPath, readOnly := range me.TargetPaths {
if err := cleanupMountPoint(targetPath); err == nil {
if err := bindMount(me.StagingPath, targetPath, readOnly); err != nil {
if err := bindMount(me.StagingPath, targetPath, readOnly, mountOptions); err != nil {
klog.Errorf("mount-cache: failed to bind-mount volume %s: %s %s %v %v",
volID, me.StagingPath, targetPath, readOnly, err)
} else {

26
pkg/cephfs/nodeserver.go
View File

@ -163,6 +163,8 @@ func (*NodeServer) mount(volOptions *volumeOptions, req *csi.NodeStageVolumeRequ
// NodePublishVolume mounts the volume mounted to the staging path to the target
// path
func (ns *NodeServer) NodePublishVolume(ctx context.Context, req *csi.NodePublishVolumeRequest) (*csi.NodePublishVolumeResponse, error) {
mountOptions := []string{"bind"}
if err := validateNodePublishVolumeRequest(req); err != nil {
return nil, status.Error(codes.InvalidArgument, err.Error())
}
@ -177,6 +179,28 @@ func (ns *NodeServer) NodePublishVolume(ctx context.Context, req *csi.NodePublis
return nil, status.Error(codes.Internal, err.Error())
}
volCap := req.GetVolumeCapability()
if req.GetReadonly() {
mountOptions = append(mountOptions, "ro")
}
if m := volCap.GetMount(); m != nil {
hasOption := func(options []string, opt string) bool {
for _, o := range options {
if o == opt {
return true
}
}
return false
}
for _, f := range m.MountFlags {
if !hasOption(mountOptions, f) {
mountOptions = append(mountOptions, f)
}
}
}
// Check if the volume is already mounted
isMnt, err := isMountPoint(targetPath)
@ -193,7 +217,7 @@ func (ns *NodeServer) NodePublishVolume(ctx context.Context, req *csi.NodePublis
// It's not, mount now
if err = bindMount(req.GetStagingTargetPath(), req.GetTargetPath(), req.GetReadonly()); err != nil {
if err = bindMount(req.GetStagingTargetPath(), req.GetTargetPath(), req.GetReadonly(), mountOptions); err != nil {
klog.Errorf("failed to bind-mount volume %s: %v", volID, err)
return nil, status.Error(codes.Internal, err.Error())
}

9
pkg/cephfs/volumemounter.go
View File

@ -23,6 +23,7 @@ import (
"os/exec"
"regexp"
"strconv"
"strings"
"sync"
"github.com/ceph/ceph-csi/pkg/util"
@ -184,13 +185,15 @@ func (m *kernelMounter) mount(mountPoint string, cr *credentials, volOptions *vo
func (m *kernelMounter) name() string { return "Ceph kernel client" }
func bindMount(from, to string, readOnly bool) error {
if err := execCommandErr("mount", "--bind", from, to); err != nil {
func bindMount(from, to string, readOnly bool, mntOptions []string) error {
mntOptionSli := strings.Join(mntOptions, ",")
if err := execCommandErr("mount", "-o", mntOptionSli, from, to); err != nil {
return fmt.Errorf("failed to bind-mount %s to %s: %v", from, to, err)
}
if readOnly {
if err := execCommandErr("mount", "-o", "remount,ro,bind", to); err != nil {
mntOptionSli = mntOptionSli + ",remount"
if err := execCommandErr("mount", "-o", mntOptionSli, to); err != nil {
return fmt.Errorf("failed read-only remount of %s: %v", to, err)
}
}