Files
cloudpods/pkg/util/fuseutils/fuseutils.go
2020-07-19 12:35:04 +08:00

87 lines
2.5 KiB
Go

// Copyright 2019 Yunion
//
// 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 fuseutils
import (
"fmt"
"os"
"path"
"strings"
"time"
"yunion.io/x/log"
"yunion.io/x/pkg/errors"
"yunion.io/x/onecloud/pkg/util/fileutils2"
"yunion.io/x/onecloud/pkg/util/procutils"
)
const DEFAULT_BLOCKSIZE = 8
func MountFusefs(fetcherfsPath, url, tmpdir, token, mntpath string, blocksize int) error {
var metaPath = path.Join(mntpath, "meta")
if f, err := os.OpenFile(metaPath, os.O_RDONLY, 0644); err == nil {
f.Close()
log.Infof("Already mounted: %s, skip...", mntpath)
return nil
}
// is mounted
if err := procutils.NewCommand("mountpoint", mntpath).Run(); err == nil {
out, err := procutils.NewCommand("umount", mntpath).Output()
if err != nil {
return errors.Wrapf(err, "umount %s failed: %s", mntpath, out)
}
}
if !fileutils2.Exists(tmpdir) {
if out, err := procutils.NewCommand("mkdir", "-p", tmpdir).Output(); err != nil {
return errors.Wrapf(err, "mkdir %s failed: %s", tmpdir, out)
}
}
if !fileutils2.Exists(mntpath) {
if out, err := procutils.NewCommand("mkdir", "-p", mntpath).Output(); err != nil {
return errors.Wrapf(err, "mkdir %s failed: %s", mntpath, out)
}
}
var opts = fmt.Sprintf("url=%s", url)
opts += fmt.Sprintf(",tmpdir=%s", tmpdir)
opts += fmt.Sprintf(",token=%s", token)
opts += fmt.Sprintf(",blocksize=%d", blocksize)
var cmd = []string{fetcherfsPath, "-s", "-o", opts, mntpath}
log.Infof("%s", strings.Join(cmd, " "))
out, err := procutils.NewRemoteCommandAsFarAsPossible(cmd[0], cmd[1:]...).Output()
if err != nil {
log.Errorf("%v Mount fetcherfs filed: %s %s", cmd, err, out)
out2, err2 := procutils.NewCommand("umount", mntpath).Output()
if err2 != nil {
log.Errorf("umount fetcherfs failed %s %s", err2, out2)
}
return errors.Wrapf(err, "mount fetcherfs failed: %s", out)
}
time.Sleep(200 * time.Millisecond)
if f, err := os.OpenFile(metaPath, os.O_RDONLY, 0644); err == nil {
f.Close()
return nil
} else {
log.Errorln(err)
return errors.Wrap(err, "failed open metaPath")
}
}