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[Kubelet] Do not use custom mounter script for bind mounts, ext* and tmpfs mounts

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Signed-off-by: Vishnu Kannan <vishnuk@google.com>
This commit is contained in:
Vishnu Kannan
2016-10-28 13:26:14 -07:00
committed by Vishnu kannan
parent d28f7031a1
commit 1ecc12f724
3 changed files with 15 additions and 8 deletions
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18
pkg/util/mount/mount_linux.go
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@@ -25,13 +25,13 @@ import (
"io"
"os"
"os/exec"
"path"
"strconv"
"strings"
"syscall"
"github.com/golang/glog"
utilExec "k8s.io/kubernetes/pkg/util/exec"
"k8s.io/kubernetes/pkg/util/sets"
)
const (
@@ -63,18 +63,24 @@ type Mounter struct {
// type, where kernel handles fs type for you. The mount 'options' is a list of options,
// currently come from mount(8), e.g. "ro", "remount", "bind", etc. If no more option is
// required, call Mount with an empty string list or nil.
// Update source path to include a root filesystem override to make a containerized mounter (specified via `mounterPath`) work.
func (mounter *Mounter) Mount(source string, target string, fstype string, options []string) error {
// Path to mounter binary. Set to mount accessible via $PATH by default.
// All Linux distros are expected to be shipped with a mount utility that an support bind mounts.
mounterPath := defaultMountCommand
bind, bindRemountOpts := isBind(options)
if bind {
err := doMount(mounter.mounterPath, path.Join(mounter.mounterRootfsPath, source), path.Join(mounter.mounterRootfsPath, target), fstype, []string{"bind"})
err := doMount(mounterPath, source, target, fstype, []string{"bind"})
if err != nil {
return err
}
return doMount(mounter.mounterPath, path.Join(mounter.mounterRootfsPath, source), path.Join(mounter.mounterRootfsPath, target), fstype, bindRemountOpts)
} else {
return doMount(mounter.mounterPath, source, path.Join(mounter.mounterRootfsPath, target), fstype, options)
return doMount(mounterPath, source, target, fstype, bindRemountOpts)
}
// These filesystem types are expected to be supported by the mount utility on the host across all Linux distros.
var defaultMounterFsTypes = sets.NewString("tmpfs", "ext4", "ext3", "ext2")
if !defaultMounterFsTypes.Has(fstype) {
mounterPath = mounter.mounterPath
}
return doMount(mounterPath, source, target, fstype, options)
}
// isBind detects whether a bind mount is being requested and makes the remount options to