uutils/coreutils

count reflink disk usage only once in du

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#3,906 opened on Sep 5, 2022

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 (13 comments) (0 reactions) (0 assignees)Rust (23,246 stars) (1,852 forks)batch import
U - dugood first issue

Description

uu-du reports little to no disk usage for hard links, but double (triple or more) counts disk used by reflinks. Would be nice if reflinks were counted only once.

Contributor guide

Tech stack
rust
Domain
cli
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Rustfilesystem conceptsreflinks
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Investigate how `uu du` currently counts disk usage for regular files and hard links. Determine how to detect reflinks (e.g., using `ioctl` or file attributes) and modify the counting logic to count each reflinked extent only once. Consult the comments in the issue for any existing suggestions or code pointers.
count reflink disk usage only once in du · uutils/coreutils#3906 | Good First Issue