Pacman

Historical bug tracker for the Pacman package manager.

The pacman bug tracker has moved to gitlab:
https://gitlab.archlinux.org/pacman/pacman/-/issues

This tracker remains open for interaction with historical bugs during the transition period. Any new bugs reports will be closed without further action.
Tasklist

FS#31165 - Pacman Incremental updates

Attached to Project: Pacman
Opened by ZRDO (ZRDO) - Thursday, 16 August 2012, 22:06 GMT
Last edited by Allan McRae (Allan) - Thursday, 16 August 2012, 23:54 GMT
Task Type Feature Request
Category General
Status Closed
Assigned To No-one
Architecture All
Severity Medium
Priority Normal
Reported Version 4.0.3
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Summary and Info:
After being annoyed with two updates for LibreOffice in just two days and none of them are actually the latest upgrade (seriously, downloading 60MiB with a connection ranging from 1 to 2.8 Mb/s in a home shared by 5 people is not fun. Specially for the other people) I finally came to think about this: instead of whatever download library pacman currently uses, it could implement zsync or something similar. The point: it's supposed to be software that downloads only the necessary parts of a file with no load on the server (apart of the .zsync metafile). As an advantage, it wouldn't require more than a single file per package, and the bandwidth of both client and server would be reduced. Disadvantages: it requires the client to mantain the latest package in their cache, and it would be necessary to implement XZ compression compatibility to the zsync program (right now, it just works with gz).
This task depends upon

Closed by  Allan McRae (Allan)
Thursday, 16 August 2012, 23:54 GMT
Reason for closing:  Not a bug
Additional comments about closing:  Pacman already implements using package deltas to perform updated. Arch Linux does not support it.
Comment by Dave Reisner (falconindy) - Thursday, 16 August 2012, 22:19 GMT
You're referring to deltas, which pacman already supports. The repos, however, do not currently store deltas.

- If you don't want to deal with the bandwidth of updating every day, then don't update every day.
- Use a local package cache, rather than duplicating packages across 5 installs. There's no shortage of solutions for this very problem on the wiki, the forums, the AUR....
Comment by ZRDO (ZRDO) - Friday, 17 August 2012, 09:25 GMT
Actually It's a single install. I tried to push my brother into arch, so I investigated about the local repositories. Now I finally know about what deltas are (having the option there for so long without even knowing what was it related to), I found a page in the wiki with a repo which offers deltas (https://wiki.archlinux.org/index.php/Deltup). A 72MiB update was reduced to just 18MiB, so I'm sticking to it for now. Thanks for the info!

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