Debian Bug report logs - #511542
rsync should ignore -z when not copying over the network

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Message #3 received at [email protected] (full text, mbox, reply):

From: Josh Triplett <[email protected]>

To: Debian Bug Tracking System <[email protected]>

Subject: rsync should ignore -z when not copying over the network

Date: Sun, 11 Jan 2009 15:45:05 -0800

Package: rsync
Version: 3.0.4-3
Severity: normal

rsync's -z option, to compress data, makes sense for copying over the
network.  However, when copying locally it serves no useful purpose, and
just slows down the copy.  rsync should ignore -z when not copying
over the network.  Optionally, rsync should warn about ignoring it.

- Josh Triplett

-- System Information:
Debian Release: 5.0
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.27-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages rsync depends on:
ii  base-files                    5          Debian base system miscellaneous f
ii  libacl1                       2.2.47-2   Access control list shared library
ii  libc6                         2.7-18     GNU C Library: Shared libraries
ii  libpopt0                      1.14-4     lib for parsing cmdline parameters
ii  lsb-base                      3.2-20     Linux Standard Base 3.2 init scrip

rsync recommends no packages.

Versions of packages rsync suggests:
ii  openssh-client                1:5.1p1-4  secure shell client, an rlogin/rsh
pn  openssh-server                <none>     (no description available)

-- no debconf information

Message #10 received at [email protected] (full text, mbox, reply):

From: Dominik George <[email protected]>

To: [email protected]

Subject: Nonsense

Date: Tue, 1 May 2012 11:56:59 +0200 (CEST)

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This is complete nonsense.

Although compression does not make much sense when copying local files, it 
is a programs duty to do as the user desires. Simply ignoring a flag - 
even with warning - despite the user explicitly providing it - is the 
worst thing a developer can do.

Do you want to force developers and "power users" to do their testing of 
rsync internals over the network just because it overrides their will?

rsync is a powerful tool and as such users should learn about it when 
using it. Options that make sense in their current use case is one element 
of this learning.

Besides, the idea that compression does only make sense in trade-off 
situations for network performance is basic knowledge that is not so much 
subject to rsync.

I propose closing this bug report as wontfix.

- -- 
Cheers,
Nik

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Message #15 received at [email protected] (full text, mbox, reply):

From: Paul Slootman <[email protected]>

To: Dominik George <[email protected]>, [email protected]

Subject: Re: Bug#511542: Nonsense

Date: Thu, 10 Jul 2014 13:27:53 +0200

severity 511542 wishlist
tags 511542 wontfix
thanks

On Tue 01 May 2012, Dominik George wrote:
> 
> This is complete nonsense.
> 
> Although compression does not make much sense when copying local files, it 
> is a programs duty to do as the user desires. Simply ignoring a flag - 
> even with warning - despite the user explicitly providing it - is the 
> worst thing a developer can do.

> I propose closing this bug report as wontfix.

Agreed. Well, not closing, but marking as wontfix.


Paul

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