func (d *idm) Mount(
ctx types.Context,
volumeID, volumeName string,
opts *types.VolumeMountOpts) (string, *types.Volume, error) {
opts.Preempt = d.preempt()
fields := log.Fields{
"volumeName": volumeName,
"volumeID": volumeID,
"opts": opts}
ctx.WithFields(fields).Debug("mounting volume")
mp, vol, err := d.IntegrationDriver.Mount(
ctx.Join(d.ctx), volumeID, volumeName, opts)
if err != nil {
return "", nil, err
}
// if the volume has attachments assign the new mount point to the
// MountPoint field of the first attachment element
if len(vol.Attachments) > 0 {
vol.Attachments[0].MountPoint = mp
}
d.incCount(volumeName)
return mp, vol, err
}
// Mount will return a mount point path when specifying either a volumeName
// or volumeID. If a overwriteFs boolean is specified it will overwrite
// the FS based on newFsType if it is detected that there is no FS present.
func (d *driver) Mount(
ctx types.Context,
volumeID, volumeName string,
opts *types.VolumeMountOpts) (string, *types.Volume, error) {
ctx.WithFields(log.Fields{
"volumeName": volumeName,
"volumeID": volumeID,
"opts": opts}).Info("mounting volume")
vol, err := d.volumeInspectByIDOrName(
ctx, volumeID, volumeName,
types.VolAttReqWithDevMapOnlyVolsAttachedToInstanceOrUnattachedVols,
opts.Opts)
if isErrNotFound(err) && d.volumeCreateImplicit() {
var err error
if vol, err = d.Create(ctx, volumeName, &types.VolumeCreateOpts{
Opts: utils.NewStore(),
}); err != nil {
return "", nil, goof.WithError(
"problem creating volume implicitly", err)
}
} else if err != nil {
return "", nil, err
}
if vol == nil {
return "", nil, goof.New("no volume returned or created")
}
client := context.MustClient(ctx)
if len(vol.Attachments) == 0 || opts.Preempt {
mp, err := d.getVolumeMountPath(vol.Name)
if err != nil {
return "", nil, err
}
ctx.Debug("performing precautionary unmount")
_ = client.OS().Unmount(ctx, mp, opts.Opts)
var token string
vol, token, err = client.Storage().VolumeAttach(
ctx, vol.ID, &types.VolumeAttachOpts{
Force: opts.Preempt,
Opts: utils.NewStore(),
})
if err != nil {
return "", nil, err
}
if token != "" {
opts := &types.WaitForDeviceOpts{
LocalDevicesOpts: types.LocalDevicesOpts{
ScanType: apiconfig.DeviceScanType(d.config),
Opts: opts.Opts,
},
Token: token,
Timeout: apiconfig.DeviceAttachTimeout(d.config),
}
_, _, err = client.Executor().WaitForDevice(ctx, opts)
if err != nil {
return "", nil, goof.WithError(
"problem with device discovery", err)
}
}
vol, err = d.volumeInspectByIDOrName(
ctx, vol.ID, "", types.VolAttReqTrue, opts.Opts)
if err != nil {
return "", nil, err
}
}
if len(vol.Attachments) == 0 {
return "", nil, goof.New("volume did not attach")
}
inst, err := client.Storage().InstanceInspect(ctx, utils.NewStore())
if err != nil {
return "", nil, goof.New("problem getting instance ID")
}
var ma *types.VolumeAttachment
for _, att := range vol.Attachments {
if att.InstanceID.ID == inst.InstanceID.ID {
ma = att
break
}
}
if ma == nil {
return "", nil, goof.New("no local attachment found")
}
if ma.DeviceName == "" {
return "", nil, goof.New("no device name returned")
}
mounts, err := client.OS().Mounts(
ctx, ma.DeviceName, "", opts.Opts)
if err != nil {
return "", nil, err
}
if len(mounts) > 0 {
return d.volumeMountPath(mounts[0].MountPoint), vol, nil
}
if opts.NewFSType == "" {
opts.NewFSType = d.fsType()
}
if err := client.OS().Format(
ctx,
ma.DeviceName,
&types.DeviceFormatOpts{
NewFSType: opts.NewFSType,
OverwriteFS: opts.OverwriteFS,
}); err != nil {
return "", nil, err
}
mountPath, err := d.getVolumeMountPath(vol.Name)
if err != nil {
return "", nil, err
}
if err := os.MkdirAll(mountPath, 0755); err != nil {
return "", nil, err
}
if err := client.OS().Mount(
ctx,
ma.DeviceName,
mountPath,
&types.DeviceMountOpts{}); err != nil {
return "", nil, err
}
mntPath := d.volumeMountPath(mountPath)
fields := log.Fields{
"vol": vol,
"mntPath": mntPath,
}
ctx.WithFields(fields).Info("volume mounted")
return mntPath, vol, nil
}