From: zimoun <zimon.toutoune@gmail.com>
To: "Christopher Baines" <mail@cbaines.net>,
"Ludovic Courtès" <ludo@gnu.org>
Cc: 42162@debbugs.gnu.org, "Maurice Brémond" <Maurice.Bremond@inria.fr>
Subject: bug#42162: Recovering source tarballs
Date: Mon, 20 Jul 2020 23:27:32 +0200 [thread overview]
Message-ID: <865zahev23.fsf@gmail.com> (raw)
In-Reply-To: <87a703jk78.fsf@cbaines.net>
Hi Chris,
On Mon, 13 Jul 2020 at 20:20, Christopher Baines <mail@cbaines.net> wrote:
> Going forward, being methodical as a project about storing the tarballs
> and source material for the packages is probalby the way to ensure it's
> available for the future. I'm not sure the data storage cost is
> significant, the cost of doing this is probably in working out what to
> store, doing so in a redundant manor, and making the data available.
A really rough estimate is 120KB on average* per raw tarball. So if we
consider 14000 packages and 70% of them are url-fetch, then it leads to
14k*0.7*120K= 1.2GB; which is not significant. Moreover, if we
extrapolate the numbers, between v1.0.0 and now it is 23 commits per day
modifying gnu/packages/ so 0.7*23*120K*365= 700MB per year. However,
the 120KB of metadata to re-assemble the tarball have to be compared to
the 712KB of raw compressed tarball; both about the hello package.
*based on the hello package. And it depends on the number of files in
the tarball. File stored not compressed: plain sexp.
Therefore, in addition to what to store, redundancy and availability,
one question is how to store? Git-repo? SQL database? etc.
> The Guix Data Service knows about fixed output derivations, so it might
> be possible to backfill such a store by just attempting to build those
> derivations. It might also be possible to use the Guix Data Service to
> work out what's available, and what tarballs are missing.
Missing from where? The substitutes farm or SWH?
Cheers,
simon
next prev parent reply other threads:[~2020-07-20 21:28 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-02 7:29 bug#42162: gforge.inria.fr to be taken off-line in Dec. 2020 Ludovic Courtès
2020-07-02 8:50 ` zimoun
2020-07-02 10:03 ` Ludovic Courtès
2020-07-11 15:50 ` bug#42162: Recovering source tarballs Ludovic Courtès
2020-07-13 19:20 ` Christopher Baines
2020-07-20 21:27 ` zimoun [this message]
2020-07-15 16:55 ` zimoun
2020-07-20 8:39 ` Ludovic Courtès
2020-07-20 15:52 ` zimoun
2020-07-20 17:05 ` Dr. Arne Babenhauserheide
2020-07-20 19:59 ` zimoun
2020-07-21 21:22 ` Ludovic Courtès
2020-07-22 0:27 ` zimoun
2020-07-22 10:28 ` Ludovic Courtès
2020-08-03 21:10 ` Ricardo Wurmus
2020-07-30 17:36 ` Timothy Sample
2020-07-31 14:41 ` Ludovic Courtès
2020-08-03 16:59 ` Timothy Sample
2020-08-05 17:14 ` Ludovic Courtès
2020-08-05 18:57 ` Timothy Sample
2020-08-23 16:21 ` Ludovic Courtès
2020-11-03 14:26 ` Ludovic Courtès
2020-11-03 16:37 ` zimoun
2020-11-03 19:20 ` Timothy Sample
2020-11-04 16:49 ` Ludovic Courtès
2022-09-29 0:32 ` bug#42162: gforge.inria.fr to be taken off-line in Dec. 2020 Maxim Cournoyer
2022-09-29 10:56 ` zimoun
2022-09-29 15:00 ` Ludovic Courtès
2022-09-30 3:10 ` Maxim Cournoyer
2022-09-30 12:13 ` zimoun
2022-10-01 22:04 ` Ludovic Courtès
2022-10-03 15:20 ` Maxim Cournoyer
2022-10-04 21:26 ` Ludovic Courtès
2022-09-30 18:17 ` Maxime Devos
2020-08-26 10:04 ` bug#42162: Recovering source tarballs zimoun
2020-08-26 21:11 ` Timothy Sample
2020-08-27 9:41 ` zimoun
2020-08-27 12:49 ` Ludovic Courtès
2020-08-27 18:06 ` Bengt Richter
2021-01-10 19:32 ` bug#42162: gforge.inria.fr to be taken off-line in Dec. 2020 Maxim Cournoyer
2021-01-13 10:39 ` Ludovic Courtès
2021-01-13 12:27 ` Andreas Enge
2021-01-13 15:07 ` Andreas Enge
[not found] ` <handler.42162.D42162.16105343699609.notifdone@debbugs.gnu.org>
2021-01-13 14:28 ` Ludovic Courtès
2021-01-14 14:21 ` Maxim Cournoyer
2021-10-04 15:59 ` bug#42162: gforge.inria.fr is off-line Ludovic Courtès
2021-10-04 17:50 ` bug#42162: gforge.inria.fr to be taken off-line in Dec. 2020 zimoun
2021-10-07 16:07 ` Ludovic Courtès
2021-10-09 17:29 ` raingloom
2021-10-11 8:41 ` zimoun
2021-10-12 9:24 ` Ludovic Courtès
2021-10-12 10:50 ` zimoun
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