Stuck at yum install some package for lcfs storage driver

[xzy256]

Hi,
When i use lcfs as docker storage driver, yum install some package will be stuck. I change devicemapper, start same image, install same package, it can install successfully. Why? I am not sure lcfs is available and feasible?

# yum install unzip
Loaded plugins: fastestmirror, ovl
Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast
Resolving Dependencies
--> Running transaction check
---> Package unzip.x86_64 0:6.0-19.el7 will be installed

# lsb_release
LSB Version:	:core-4.1-amd64:core-4.1-noarch
Distributor ID:	CentOS
Description:	CentOS Linux release 7.4.1708 (Core) 
Release:	7.4.1708
Codename:	Core

# docker info
Containers: 5
 Running: 1
 Paused: 0
 Stopped: 4
Images: 5
Server Version: 18.06.1-ce
Storage Driver: portworx/lcfs
 Build Version: 1.0
 Library Version: 1.0
Logging Driver: json-file
Cgroup Driver: systemd

[xzy256]

I test docker commit, first it can commit successfully. Once commit again, lcfs crash. As if lcfs is not stable.

[@rsync.gpu009.clouddev.gd.ted ~]# time docker commit 4eb83e096571 xzy-test/smallfile:lcfs-3.0
sha256:91abd5dbbfa5d398e93f71f74a629a15c8e2da05957729d2df9dbe84d0eaf4d7

real	0m5.045s
user	0m0.131s
sys	0m0.029s
[@rsync.gpu009.clouddev.gd.ted ~]# time docker commit 4eb83e096571 xzy-test/smallfile:lcfs-4.0
Error response from daemon: failed to write digest data: open /lcfs/docker-storage/image/portworx/lcfs/imagedb/content/sha256/.tmp-218f0970c816d513d59e72fd1fa7e754c80204667a890052281eafd94bb16b39697688369: no such file or directory

real	0m4.972s
user	0m0.122s
sys	0m0.011s