uutils / uutils/coreutils

mv: Cannot move huge sparse file to another small filesystem

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U - mv
Dominant language
Rust
Stars
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Forks
2k
Avg merge
1d 5h
Merged PRs (30d)
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Description

$ truncate -s 1T huge
$ mv huge /tmp/huge
mv: Permission denied

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the shown truncate and mv commands, then locate the mv command entry point and its filesystem-copy or rename handling. Trace why moving the sparse file to /tmp produces Permission denied; done means the behavior or error handling matches the expected result for a destination filesystem without enough space.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
cli, operating-systems
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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