diff --git a/daemon/graphdriver/devmapper/deviceset.go b/daemon/graphdriver/devmapper/deviceset.go index 851fa42ac7e9e..ccaea0181e721 100644 --- a/daemon/graphdriver/devmapper/deviceset.go +++ b/daemon/graphdriver/devmapper/deviceset.go @@ -466,7 +466,13 @@ func minor(device uint64) uint64 { func (devices *DeviceSet) ResizePool(size int64) error { dirname := devices.loopbackDir() datafilename := path.Join(dirname, "data") + if len(devices.dataDevice) > 0 { + datafilename = devices.dataDevice + } metadatafilename := path.Join(dirname, "metadata") + if len(devices.metadataDevice) > 0 { + metadatafilename = devices.metadataDevice + } datafile, err := os.OpenFile(datafilename, os.O_RDWR, 0) if datafile == nil {