[Bug]: When a file is modified, its mtime attribute is not updated

[xiaochunhe]

Contact Details

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Is there an existing issue for this?

• I have searched all the existing issues

Priority

high

Environment

- CubeFS version: all 
- Deployment mode(docker or standalone or cluster): all 
- Dependent components: 
- OS kernel version(Ubuntu or CentOS): 
- CPU/Memory:
- Others:

Current Behavior

When a file is modified, its mtime attribute is not updated. This is not compatible with standard POSIX semantics and will cause confusion for users.

Expected Behavior

When a file is modified (not appended), its mtime attribute is updated. This feature can be configured to enable

Steps To Reproduce

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CubeFS Log

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Anything else? (Additional Context)

No response

[morphes1995]

i want to resolve this , please describe how to reproduce it