permission denied in clone

[zhoucheng361]

What happened:
复现步骤：

root@bench-03:~/juicefs# cat .github/scripts/hypo/command_test.py
    def test_clone_4834(self):
        state = JuicefsCommandMachine()
        folders_0 = state.init_folders()
        state.chmod(entry=folders_0, mode=2427, user='root')
        folders_1 = state.mkdir(mode=2931, parent=folders_0, subdir='vhjp', umask=369, user='root')
        state.chmod(entry=folders_1, mode=1263, user='root')
        state.clone(entry=folders_1, new_entry_name='tbim', parent=folders_0, preserve=False, user='user1')
        state.teardown()
root@bench-03:~/juicefs# ./juicefs format redis://localhost/1 redis --enable-acl --trash-days 0
root@bench-03:~/juicefs# ./juicefs mount redis://localhost/1 /tmp/jfs1 -d
root@bench-03:~/juicefs# ./juicefs format mysql://juicedata:juicedata@(127.0.0.1)/test mysql --enable-acl --trash-days 0
root@bench-03:~/juicefs# ./juicefs mount mysql://juicedata:juicedata@(127.0.0.1)/test /tmp/jfs2 -d
root@bench-03:~/juicefs#  python3 .github/scripts/hypo/command_test.py -k test_clone

2024-05-10 18:10:30,221 - INFO - run_cmd: sudo -u user1 ./juicefs clone /tmp/jfs1/fsrand/vhjp /tmp/jfs1/fsrand/tbim
2024-05-10 18:10:30,552 - INFO - do_clone succeed
2024-05-10 18:10:30,552 - INFO - run_cmd: sudo -u user1 ./juicefs clone /tmp/jfs2/fsrand/vhjp /tmp/jfs2/fsrand/tbim
2024-05-10 18:10:30,882 - INFO - do_clone  {} failed:  clone failed: permission denied

F
======================================================================
FAIL: test_clone2 (__main__.TestCommand)
----------------------------------------------------------------------
Traceback (most recent call last):
  File ".github/scripts/hypo/command_test.py", line 65, in test_clone2
    state.clone(entry=folders_1, new_entry_name='tbim', parent=folders_0, preserve=False, user='user1')
  File "/root/juicefs/.github/scripts/hypo/command.py", line 155, in clone
    entry = Entries.filter(lambda x: x != multiple()),
  File "/usr/local/lib/python3.8/dist-packages/hypothesis/stateful.py", line 734, in rule_wrapper
    return f(*args, **kwargs)
  File "/root/juicefs/.github/scripts/hypo/command.py", line 155, in clone
    entry = Entries.filter(lambda x: x != multiple()),
  File "/usr/local/lib/python3.8/dist-packages/hypothesis/stateful.py", line 855, in precondition_wrapper
    return f(*args, **kwargs)
  File "/root/juicefs/.github/scripts/hypo/command.py", line 165, in clone
    assert self.equal(result1, result2), f'\033[31mclone:\nresult1 is {result1}\nresult2 is {result2}\033[0m'
AssertionError: clone:
result1 is True
result2 is  clone failed: permission denied

What you expected to happen:

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know?

Environment:

• JuiceFS version (use juicefs --version) or Hadoop Java SDK version:
• Cloud provider or hardware configuration running JuiceFS:
• OS (e.g cat /etc/os-release):
• Kernel (e.g. uname -a):
• Object storage (cloud provider and region, or self maintained):
• Metadata engine info (version, cloud provider managed or self maintained):
• Network connectivity (JuiceFS to metadata engine, JuiceFS to object storage):
• Others: