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Roesch" Date: Wed, 13 Dec 2023 10:17:12 +0000 Message-ID: Subject: Re: guix on nfs based systems To: "Etienne B. Roesch" , Felix Lechner , guix-science@gnu.org Cc: help-guix@gnu.org Received-SPF: pass client-ip=2607:f8b0:4864:20::c31; envelope-from=etienne.roesch@gmail.com; helo=mail-oo1-xc31.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: help-guix@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-guix-bounces+larch=yhetil.org@gnu.org Sender: help-guix-bounces+larch=yhetil.org@gnu.org X-Migadu-Flow: FLOW_IN X-Migadu-Country: US X-Migadu-Spam-Score: -3.59 X-Spam-Score: -3.59 X-Migadu-Queue-Id: 260B510C49 X-Migadu-Scanner: mx12.migadu.com X-TUID: F9v+BhkyEj+o Hi! A quick follow up on that, as I have had some discussions with a few of you, and also my IT department. *Context*: at the University of Reading, we have that facility that allows the deployment of vms on-demand to the campus. I work primarily on reproducibility in science, and managed to convince our IT dept to provide guix as default to all users. *Hiccups*: we provide home dirs as nfs drives through the network. Using guix, we are thinking of creating one nfs drive, shared by all users, to contain /var/guix and /gnu/store, symlinked from /. As I understand, that should work, until a user decides to run "guix gc" (which would clear wrongly assumed unused profiles) or maybe until a user decides to launch several vms (which is theoretically possible, but doesn't happen often). Efraim suggested using a shared daemon ssh-ing GUIX_DAEMON_SOCKET. We would probably run this on a separate vm. We are however unsure how it would behave when /var/guix/daemon-socket/socket is itself on an nfs. In theory, it should work, right? Are we missing something? Thanks a ton! Etienne On Sun, Nov 26, 2023 at 7:36=E2=80=AFAM Efraim Flashner wrote: > On Fri, Nov 24, 2023 at 06:08:30PM +0000, Etienne B. Roesch wrote: > > Hahaha! Yes, that's what I was getting at! > > > > I suppose one could run gc periodically, in a monthly cron. No? > > > > Etienne > > > > On Thu, Nov 23, 2023 at 1:03=E2=80=AFPM Felix Lechner < > felix.lechner@lease-up.com> > > wrote: > > > > > Hi Efraim, > > > > > > On Thu, Nov 23 2023, Efraim Flashner wrote: > > > > > > > One thing we do on the small cluster at UTenn is /gnu and /var/guix > (in > > > > addition to the home directories) are exported across NFS > > > > > > That's fascinating! Do you ever run 'guix gc', or do you just buy new > > > disks when space runs low? > > > > > > Kind regards (and perhaps, happy Thanksgiving) > > > Felix > > We generally run it as necessary, but luckily not too often. With > everyone trained to use profiles we rarely have problems with necessary > packages disappearing. I've generally been the biggest offender with > building and rebuilding packages while packaging new software. > > -- > Efraim Flashner =D7=A8=D7=A0=D7=A9=D7=9C=D7= =A4 =D7=9D=D7=99=D7=A8=D7=A4=D7=90 > GPG key =3D A28B F40C 3E55 1372 662D 14F7 41AA E7DC CA3D 8351 > Confidentiality cannot be guaranteed on emails sent or received unencrypt= ed >