From: Uladzimir Bely <ubely@ilbers.de>
To: Michael Adler <michael.adler@siemens.com>
Cc: isar-users@googlegroups.com
Subject: Re: [PATCH v2 00/24] Sbuild/Schroot migration
Date: Fri, 26 Nov 2021 15:57:17 +0300 [thread overview]
Message-ID: <18620765.fSG56mABFh@hp> (raw)
In-Reply-To: <20211126120921.vjpxnzbdfk4e6rr3@kratos>
In mail from Friday, 26 Nov 2021. 15:09:21 +03 user Michael Adler wrote:
> Hi Uladzimir,
>
> > It seems there is no way to say gitlab using external volume via the
> > configuration file `.gitlab-ci.yml`
> yes, because it is not universally applicable: there are various runner
> implementations [1] and the "volumes" feature is not supported by every
> runner (e.g. SSH-based).
>
> For CIP, we use custom Kubernetes runners. Although it is possible to setup
> custom volumes [2], that's only half of the story: the other half is to
> ensure that these directories actually exist on the host, which in the case
> of gitlab-cloud-ci [3] (used by CIP and Siemens) are ephemeral, i.e. they
> are dynamically created and destroyed based on on the CI workload. It
> should be possible to support such volumes but it's definitely extra
> engineering/maintenance effort.
>
> > So, gitlab will use external ("/m/ws-10/schroot-10a/union") directory on
> > host.
> What happens if I choose not to provide such a volume? Is it mandatory for
> the build? Do I also need this for local containerized builds?
>
As I wrote, the problem that docker uses overlayfs to produce a working
chroot. So, /var/lib/schroot/union/ happens to be on overlayfs. Sbuild also
uses overlayfs - it mounts rootfs to /var/lib/schroot/union/underlay (as a
lower, read-only layer) and uses /var/lib/schroot/union/overlay/ handle rw
layer.
But, it is not supported by overlayfs (owerdir=/lower,upperdir=/
upper,workdir=/work) when upperdir is on overlayfs (from docker).
>
> Kind regards,
> Michael
>
> [1] https://docs.gitlab.com/runner/executors/
> [2] https://docs.gitlab.com/runner/executors/kubernetes.html#using-volumes
> [3] https://gitlab.com/cip-project/cip-testing/gitlab-cloud-ci
--
Uladzimir Bely
Promwad Ltd.
External service provider of ilbers GmbH
Maria-Merian-Str. 8
85521 Ottobrunn, Germany
+49 (89) 122 67 24-0
Commercial register Munich, HRB 214197
General Manager: Baurzhan Ismagulov
next prev parent reply other threads:[~2021-11-26 12:57 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-19 12:13 Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 01/24] dpkg: Install raw package files to source root Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 02/24] dpkg-gbp: Use separate command to export tarball Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 03/24] isar-bootstrap: Export bootstrap to schroot config Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 04/24] linux-module: Do not use shell environment Uladzimir Bely
2021-11-19 12:44 ` Jan Kiszka
2021-11-19 12:45 ` Jan Kiszka
2021-11-23 12:24 ` Uladzimir Bely
2021-11-24 6:13 ` Jan Kiszka
2021-11-25 5:47 ` Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 05/24] u-boot: " Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 06/24] trusted-firmware: " Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 07/24] optee-os: " Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 08/24] kselftest: " Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 09/24] dpkg: Build packages with sbuild Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 10/24] sbuild: Introduce environment variables export API Uladzimir Bely
2021-11-21 9:07 ` Jan Kiszka
2021-11-19 12:13 ` [PATCH v2 11/24] dpkg-gbp: Migrate to schroot Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 12/24] linux-mainline: Move cfg fragment test to debian/rules Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 13/24] linux-custom: Prepare kernel config inside sbuild Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 14/24] sbuild: Add recipes for host and target rootfs to run sbuild Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 15/24] sbuild: Mount base-apt in schroot Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 16/24] sbuild: Add sbuildshell task Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 17/24] dpkg-gbp: Preinstall gbp utils in schroot Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 18/24] dpkg: Remove builddeps install task Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 19/24] dpkg-base: Switch devshell to use schroot Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 20/24] dpkg-base: Switch apt_fetch and apt_unpack " Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 21/24] dpkg-base: Cleanup from buildchroot parts Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 22/24] dpkg-gbp: Use host tools for dsc preparation Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 23/24] doc: Add sbuild-related documentation Uladzimir Bely
2021-11-19 12:13 ` [PATCH v2 24/24] sbuild: Replace isar-apt mounting with copying Uladzimir Bely
2021-11-19 21:48 ` [PATCH v2 00/24] Sbuild/Schroot migration Henning Schild
2021-11-21 9:07 ` Jan Kiszka
2021-11-23 13:05 ` Uladzimir Bely
2021-11-26 6:43 ` Jan Kiszka
2021-11-26 8:03 ` Uladzimir Bely
2021-11-26 8:50 ` Jan Kiszka
2021-12-01 12:11 ` Jan Kiszka
2021-11-26 12:09 ` Michael Adler
2021-11-26 12:57 ` Uladzimir Bely [this message]
2021-11-26 14:58 ` Jan Kiszka
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