func (glusterfsVolume *glusterfs) execMount(hosts *api.Endpoints, path string, mountpoint string, readonly bool) error {
var errs error
var command exec.Cmd
var mountArgs []string
var opt []string
// build option array
if readonly == true {
opt = []string{"-o", "ro"}
} else {
opt = []string{"-o", "rw"}
}
l := len(hosts.Subsets)
// avoid mount storm, pick a host randomly
start := rand.Int() % l
// iterate all hosts until mount succeeds.
for i := start; i < start+l; i++ {
arg := []string{"-t", "glusterfs", hosts.Subsets[i%l].Addresses[0].IP + ":" + path, mountpoint}
mountArgs = append(arg, opt...)
glog.V(1).Infof("Glusterfs: mount cmd: mount %v", strings.Join(mountArgs, " "))
command = glusterfsVolume.exe.Command("mount", mountArgs...)
_, errs = command.CombinedOutput()
if errs == nil {
return nil
}
}
glog.Errorf("Glusterfs: mount failed: %v", errs)
return errs
}
func (pr execProber) Probe(e exec.Cmd) (probe.Result, string, error) {
data, err := e.CombinedOutput()
glog.V(4).Infof("Exec probe response: %q", string(data))
if err != nil {
exit, ok := err.(exec.ExitError)
if ok {
if exit.ExitStatus() == 0 {
return probe.Success, string(data), nil
} else {
return probe.Failure, string(data), nil
}
}
return probe.Unknown, "", err
}
return probe.Success, string(data), nil
}