mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-18 04:10:22 +00:00
ab87045afb
By reading the contents of /proc/filesystems, and checking if "ceph" is included there, running "modprobe ceph" can be skipped. Fixes: #4376 Signed-off-by: Niels de Vos <ndevos@ibm.com>
140 lines
3.5 KiB
Go
140 lines
3.5 KiB
Go
/*
|
|
Copyright 2021 The Ceph-CSI 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.
|
|
*/
|
|
|
|
package mounter
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"os"
|
|
"strings"
|
|
|
|
"github.com/ceph/ceph-csi/internal/cephfs/store"
|
|
"github.com/ceph/ceph-csi/internal/util"
|
|
)
|
|
|
|
const (
|
|
volumeMounterKernel = "kernel"
|
|
netDev = "_netdev"
|
|
kernelModule = "ceph"
|
|
)
|
|
|
|
// testErrorf can be set by unit test for enhanced error reporting.
|
|
var testErrorf = func(fmt string, args ...any) { /* do nothing */ }
|
|
|
|
type KernelMounter interface {
|
|
Mount(
|
|
ctx context.Context,
|
|
mountPoint string,
|
|
cr *util.Credentials,
|
|
volOptions *store.VolumeOptions,
|
|
) error
|
|
|
|
Name() string
|
|
}
|
|
|
|
type kernelMounter struct {
|
|
// needsModprobe indicates that the ceph kernel module is not loaded in
|
|
// the kernel yet (or compiled into it)
|
|
needsModprobe bool
|
|
}
|
|
|
|
func NewKernelMounter() KernelMounter {
|
|
return &kernelMounter{
|
|
needsModprobe: !filesystemSupported(kernelModule),
|
|
}
|
|
}
|
|
|
|
func (m *kernelMounter) mountKernel(
|
|
ctx context.Context,
|
|
mountPoint string,
|
|
cr *util.Credentials,
|
|
volOptions *store.VolumeOptions,
|
|
) error {
|
|
if m.needsModprobe {
|
|
if err := execCommandErr(ctx, "modprobe", kernelModule); err != nil {
|
|
return err
|
|
}
|
|
|
|
m.needsModprobe = false
|
|
}
|
|
|
|
args := []string{
|
|
"-t", "ceph",
|
|
fmt.Sprintf("%s:%s", volOptions.Monitors, volOptions.RootPath),
|
|
mountPoint,
|
|
}
|
|
|
|
optionsStr := fmt.Sprintf("name=%s,secretfile=%s", cr.ID, cr.KeyFile)
|
|
mdsNamespace := ""
|
|
if volOptions.FsName != "" {
|
|
mdsNamespace = fmt.Sprintf("mds_namespace=%s", volOptions.FsName)
|
|
}
|
|
optionsStr = util.MountOptionsAdd(optionsStr, mdsNamespace, volOptions.KernelMountOptions, netDev)
|
|
|
|
args = append(args, "-o", optionsStr)
|
|
|
|
var (
|
|
stderr string
|
|
err error
|
|
)
|
|
|
|
if volOptions.NetNamespaceFilePath != "" {
|
|
_, stderr, err = util.ExecuteCommandWithNSEnter(ctx, volOptions.NetNamespaceFilePath, "mount", args[:]...)
|
|
} else {
|
|
_, stderr, err = util.ExecCommand(ctx, "mount", args[:]...)
|
|
}
|
|
if err != nil {
|
|
return fmt.Errorf("%w stderr: %s", err, stderr)
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
func (m *kernelMounter) Mount(
|
|
ctx context.Context,
|
|
mountPoint string,
|
|
cr *util.Credentials,
|
|
volOptions *store.VolumeOptions,
|
|
) error {
|
|
if err := util.CreateMountPoint(mountPoint); err != nil {
|
|
return err
|
|
}
|
|
|
|
return m.mountKernel(ctx, mountPoint, cr, volOptions)
|
|
}
|
|
|
|
func (m *kernelMounter) Name() string { return "Ceph kernel client" }
|
|
|
|
// filesystemSupported checks if the passed name of the filesystem is included
|
|
// in /proc/filesystems.
|
|
func filesystemSupported(fs string) bool {
|
|
// /proc/filesystems contains a list of all supported filesystems,
|
|
// either compiled into the kernel, or as loadable module.
|
|
data, err := os.ReadFile("/proc/filesystems")
|
|
if err != nil {
|
|
testErrorf("failed to read /proc/filesystems: %v", err)
|
|
|
|
return false
|
|
}
|
|
|
|
// The format of /proc/filesystems is one filesystem per line, an
|
|
// optional keyword ("nodev") followed by a tab and the name of the
|
|
// filesystem. Matching <tab>ceph<eol> for the ceph kernel module that
|
|
// supports CephFS.
|
|
return strings.Contains(string(data), "\t"+fs+"\n")
|
|
}
|