canonical/multipass

Support zsync for image downloads

Closed

#271 opened on Jun 8, 2018

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enhancementhelp wantedlow

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Description

This is so far down the wishlist it went through the floor... ;)

zsync is being used across the various Ubuntu image repositories, it would be really cool to support it to reduce the bandwidth used even more.

Contributor guide

Research direction
Investigate the current image download implementation in Multipass, likely in the 'src' directory. Study the zsync tool's API and protocol. Propose a design for integrating zsync for image downloads, considering fallback mechanisms. Engage with maintainers to clarify if this feature is still desired and to discuss implementation approach.
Tech stack
cpp
Domain
infrastructureperformance
Issue type
Feature
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.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Needs investigation
Prerequisites
Understanding of Multipass image download flowC++ build environment
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20