MS coreutils: cp --reflink=always file1 file1_reflink1 returns "Not supported"
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P - Windows
U - cp
- Dominant language
- Rust
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Description
Microsoft coreutils:
cp --reflink=always file1 file1_reflink1 returns "Not supported", on ReFS, WinBTRFS and msnfs41client
Steps to reproduce
$ cp --reflink=always file1 file1_reflink1
cp: failed to clone 'file1_reflink1' from 'xxx': Not supported
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating the cp implementation and its --reflink handling, then reproduce the command on ReFS, WinBTRFS, or msnfs41client. Trace how unsupported clone operations are handled and use the existing cp tests to define the expected behavior; the issue is complete when the reported Windows-filesystem case is correctly covered and tested.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- cli, operating-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 38/100