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Added forcecephkernelclient as startup parameter to force enabling ceph

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Signed-off-by: Stefan Haas <shaas@suse.com>
(cherry picked from commit 6a2717ce20)
This commit is contained in:
Stefan Haas 2019-10-10 12:15:44 +02:00 committed by mergify[bot]
parent 2d16bc3ee9
commit 953c2e166c
5 changed files with 31 additions and 20 deletions
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1
cmd/cephcsi.go
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@ -63,6 +63,7 @@ func init() {
// cephfs related flags
flag.StringVar(&conf.MountCacheDir, "mountcachedir", "", "mount info cache save dir")
flag.BoolVar(&conf.ForceKernelCephFS, "forcecephkernelclient", false, "enable Ceph Kernel clients on kernel < 4.17 which support quotas")
// liveness/grpc metrics related flags
flag.IntVar(&conf.MetricsPort, "metricsport", 8080, "TCP port for liveness/grpc metrics requests")

7
docs/deploy-cephfs.md
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@ -44,7 +44,7 @@ that should be resolved in v14.2.3.
**Available command line arguments:**
| Option | Default value | Description |
| --------------------- | --------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| -------------------------------- | --------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `--endpoint` | `unix://tmp/csi.sock` | CSI endpoint, must be a UNIX socket |
| `--drivername` | `cephfs.csi.ceph.com` | Name of the driver (Kubernetes: `provisioner` field in StorageClass must correspond to this value) |
| `--nodeid` | _empty_ | This node's ID |
@ -60,6 +60,11 @@ that should be resolved in v14.2.3.
| `--polltime` | `60s` | Time interval in between each poll |
| `--timeout` | `3s` | Probe timeout in seconds |
| `--histogramoption` | `0.5,2,6` | Histogram option for grpc metrics, should be comma separated value (ex:= "0.5,2,6" where start=0.5 factor=2, count=6) |
| `--forcecephkernelclient` | `false` | Force enabling Ceph Kernel clients for mounting on kernels < 4.17 |
**NOTE:** The parameter `-forcecephkernelclient` enables the Kernel
CephFS mounter on kernels < 4.17.
**This is not recommended/supported if the kernel does not support quota.**
**Available environmental variables:**

2
pkg/cephfs/driver.go
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@ -95,7 +95,7 @@ func (fs *Driver) Run(conf *util.Config, cachePersister util.CachePersister) {
// Configuration
PluginFolder = conf.PluginPath
if err := loadAvailableMounters(); err != nil {
if err := loadAvailableMounters(conf); err != nil {
klog.Fatalf("cephfs: failed to load ceph mounters: %v", err)
}

5
pkg/cephfs/volumemounter.go
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@ -49,7 +49,7 @@ var (
// Load available ceph mounters installed on system into availableMounters
// Called from driver.go's Run()
func loadAvailableMounters() error {
func loadAvailableMounters(conf *util.Config) error {
// #nosec
fuseMounterProbe := exec.Command("ceph-fuse", "--version")
// #nosec
@ -70,7 +70,8 @@ func loadAvailableMounters() error {
if err != nil {
return err
}
if majorVers > 4 || (majorVers >= 4 && minorVers >= 17) {
if conf.ForceKernelCephFS || majorVers > 4 || (majorVers >= 4 && minorVers >= 17) {
klog.Infof("loaded mounter: %s", volumeMounterKernel)
availableMounters = append(availableMounters, volumeMounterKernel)
} else {

4
pkg/util/util.go
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@ -97,9 +97,13 @@ type Config struct {
IsControllerServer bool // if set to true start provisoner server
IsNodeServer bool // if set to true start node server
// rbd related flag
Containerized bool // whether run as containerized
// cephfs related flags
ForceKernelCephFS bool // force to use the ceph kernel client even if the kernel is < 4.17
}
// CreatePersistanceStorage creates storage path and initializes new cache