An error occurred when I used the juice sync tool

[wangliangl]

What happened:
Failed to copy data of xxxx not a directory [sync.go:475]
What you expected to happen:

How to reproduce it (as minimally and precisely as possible):
juicefs sync /mnt/cephfs-adas-boschhwy/adas/peng.gao /jfs-public/adas/peng.gao -u=true --perms=true --check-all=true --bwlimit=81920 --dirs=true --threads=30 --debug
Anything else we need to know?
the source path is Ceph mount and the target is juice mount
Environment:

• JuiceFS version (use juicefs --version) or Hadoop Java SDK version: juicefs version 1.0.0-beta3+2022-05-26.7d452cb
• Cloud provider or hardware configuration running JuiceFS:
• OS (e.g cat /etc/os-release):
  NAME="CentOS Linux"
  VERSION="7 (Core)"
  ID="centos"
  ID_LIKE="rhel fedora"
  VERSION_ID="7"
  PRETTY_NAME="CentOS Linux 7 (Core)"
  ANSI_COLOR="0;31"
  CPE_NAME="cpe:/o:centos:centos:7"
  HOME_URL="https://www.centos.org/"
  BUG_REPORT_URL="https://bugs.centos.org/"

CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"

• Kernel (e.g. uname -a): Linux dev-gpu016.hogpu.cc 3.10.0-957.21.3.el7.x86_64 update reader length after write #1 SMP Tue Jun 18 16:35:19 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
• Object storage (cloud provider and region, or self maintained): bos
• Metadata engine info (version, cloud provider managed or self maintained): tikv
• Network connectivity (JuiceFS to metadata engine, JuiceFS to object storage):
• Others: