[curvefs]client:The deleted dentry still exists

[Cyber-SiKu]

Describe the bug (描述bug)

First mount a curvefs client.
Then run a quay.io/siku/curve:fstransh container and map the curvefs client directory to the container (/mnt/mnt-1).
in container
Copy dbench.sh to /mnt/mnt-1.
Running the script will cause the container to crash.
Delete the directory created by the script (dbench-master dbench-master.zip) on the host machine.
Restart the container.
Failed to execute the script into the container. Show the error:

errors in log:

To Reproduce (复现方法)

Expected behavior (期望行为)

Versions (各种版本)
OS:
Compiler:
branch: v2.7.0-beta2_6639d26
commit id:

Additional context/screenshots (更多上下文/截图)

[Cyber-SiKu]

Related to the following two configuration items

fs.lookupCache.negativeTimeoutSec: 1
fs.lookupCache.minUses: 5

This configuration item means that if you continuously return to the server and cannot find it 5 times within 1 second, it will cache the not found for 1 second, and will not return to the source within this 1 second, but will directly return to not found~
Many caching systems have this configuration item, such as NFS and Nginx. Users need to configure it according to the actual scenario to suit their own scenario.