;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2020 Maxim Cournoyer <maxim.cournoyer@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (tests services linux)
  #:use-module (ice-9 match)
  #:use-module (gnu packages linux)
  #:use-module (gnu services linux)
  #:use-module (guix gexp)
  #:use-module (srfi srfi-64))

;;; Tests for the (gnu services linux) module.

(test-begin "linux-services")


;;;
;;; Early OOM daemon.
;;;

(define earlyoom-configuration->command-line-args
  (@@ (gnu services linux) earlyoom-configuration->command-line-args))

(define %earlyoom-configuration-sample
  (earlyoom-configuration
   (minimum-available-memory 10)
   (minimum-free-swap 20)
   (prefer-regexp "icecat")
   (avoid-regexp "guix-daemon")
   (memory-report-interval 60)
   (ignore-positive-oom-score-adj? #f)
   (run-with-higher-priority? #t)
   (show-debug-messages? #f)
   (send-notification-command "python \"/some/path/notify-all-users.py\"")))

(test-equal "earlyoom-configuration->command-line-args"
  (list (file-append earlyoom "/bin/earlyoom")
        "-m" "10" "-s" "20" "--prefer" "icecat"
        "--avoid" "guix-daemon" "-r" "60" "-p"
        "-N" "python \"/some/path/notify-all-users.py\"")
  (earlyoom-configuration->command-line-args %earlyoom-configuration-sample))

(test-end "linux-services")
4a294480cafd5c7cc79e700a86263659b70c'>root</a>/<a href='/guix/log/ROADMAP?id=e97a4a294480cafd5c7cc79e700a86263659b70c'>ROADMAP</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/ROADMAP?id=e97a4a294480cafd5c7cc79e700a86263659b70c&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2016-01-29 20:21:54 +0300'>2016-01-29</span></td><td><a href='/guix/commit/ROADMAP?id=171a0a13a4350ac9bbed0f2ed8e9c9777cc57b22'>Rename 'dmd' to 'shepherd' in comments and strings.</a><span class='msg-avail'>...<span class='msg-tooltip'>* build-aux/hydra/demo-os.scm (operating-system)[issue]: Point to
  shepherd instead of dmd.
* ROADMAP: Likewise.
* gnu/build/install.scm (directives): Adjust comment.
</span></span></td><td>Alex Kost</td></tr>
<tr><td><span title='2015-01-22 22:52:11 +0100'>2015-01-22</span></td><td><a href='/guix/commit/ROADMAP?id=5bf6b86f1b5b12a55305b0dc8030a6f8f2005f01'>doc: Update 'ROADMAP'.</a><span class='msg-avail'>...<span class='msg-tooltip'>Suggested by Omar Radwan &lt;toxemicsquire4@gmail.com&gt;.

* ROADMAP: Rewrite.
</span></span></td><td>Ludovic Courtès</td></tr>
/commit/nix/libstore/gc.cc?id=bb0beaecdee1a2315a1269b1746d238c8ab0e699'>nix: Guard against removing temporary roots of living processes.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;https://issues.guix.gnu.org/25018&gt;.

* nix/libstore/gc.cc (readTempRoots): Add a check to guard against removing
the temporary roots of a living process.

Signed-off-by: Maxim Cournoyer &lt;maxim.cournoyer@gmail.com&gt;
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-11-16 14:34:28 +0100'>2021-11-16</span></td><td><a href='/guix/commit/nix/libstore/gc.cc?id=472a0e82a52a3d5d841e1dfad6b13e26082a5750'>daemon: Do not deduplicate files smaller than 8 KiB.</a><span class='msg-avail'>...<span class='msg-tooltip'>Files smaller than 8 KiB typically represent ~70% of the entries in
/gnu/store/.links but only contribute to ~4% of the space savings
afforded by deduplication.

Not considering these files for deduplication speeds up file insertion
in the store and, more importantly, leaves 'removeUnusedLinks' with
fewer entries to traverse, thereby speeding it up proportionally.

Partly fixes &lt;https://issues.guix.gnu.org/24937&gt;.

* config-daemon.ac: Remove symlink hard link check and CAN_LINK_SYMLINK
definition.
* guix/store/deduplication.scm (%deduplication-minimum-size): New
variable.
(deduplicate)[loop]: Do not recurse when FILE's size is below
%DEDUPLICATION-MINIMUM-SIZE.
(dump-port): New procedure.
(dump-file/deduplicate)[hash]: Turn into...
[dump-and-compute-hash]: ... this thunk.
Call 'deduplicate' only when SIZE is greater than
%DEDUPLICATION-MINIMUM-SIZE; otherwise call 'dump-port'.
* nix/libstore/gc.cc (LocalStore::removeUnusedLinks): Drop files where
st.st_size &lt; deduplicationMinSize.
* nix/libstore/local-store.hh (deduplicationMinSize): New declaration.
* nix/libstore/optimise-store.cc (deduplicationMinSize): New variable.
(LocalStore::optimisePath_): Return when PATH is a symlink or smaller
than 'deduplicationMinSize'.
* tests/derivations.scm ("identical files are deduplicated"): Produce
files bigger than %DEDUPLICATION-MINIMUM-SIZE.
* tests/nar.scm ("restore-file-set with directories (signed, valid)"):
Likewise.
* tests/store-deduplication.scm ("deduplicate, below %deduplication-minimum-size"):
New test.
("deduplicate", "deduplicate, ENOSPC"): Produce files bigger than
%DEDUPLICATION-MINIMUM-SIZE.
* tests/store.scm ("substitute, deduplication"): Likewise.
</span></span></td><td>Ludovic Courtès</td></tr>