From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark H Weaver <mhw@netris.org>
Subject: bug#33378: offload: Avoid hosts with little or no free disk space
Date: Sun, 23 Dec 2018 12:20:17 -0500
Message-ID: <8736qoi2hf.fsf@netris.org>
References: <87ftw3hio6.fsf@gnu.org> <87r2ealci0.fsf@gnu.org>
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In-Reply-To: <87r2ealci0.fsf@gnu.org> ("Ludovic
	\=\?utf-8\?Q\?Court\=C3\=A8s\=22'\?\=
	\=\?utf-8\?Q\?s\?\= message of "Fri, 21 Dec 2018 23:51:35 +0100")
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To: 33378@debbugs.gnu.org

Hi Ludovic,

Ludovic Court=C3=A8s <ludo@gnu.org> writes:

> ludo@gnu.org (Ludovic Court=C3=A8s) skribis:
>
>> =E2=80=98choose-build-machine=E2=80=99 in (guix scripts offload) could/s=
hould exclude
>> build machines that don=E2=80=99t have at least, say, 100=C2=A0MiB avail=
able in their
>> store.  That would avoid ENOSPC build failures such as
>> <https://berlin.guixsd.org/log/0hvhrfdjwnmdm2rdf58knshbbikm4ryv-r-bsgeno=
me-hsapiens-ucsc-hg19-masked-1.3.99>.
>
> Done in commit 63b0c3eaccdf1816b419632cd7fe721934d2eb27.

Many builds require more free space than 100 MB, so this is only a
partial solution.  Also, if multiple builds are happening on the same
machine, the amount of free space available for each build will be less
than 100 MB.

Finally, the other related commit that attempts to detect build failures
caused by ENOSPC by checking if there's at least 10 MB free after the
failure won't often work in practice, I suspect.  The problem is, by the
time you perform that check, the build directory has already been
deleted.

       Mark