mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-11-07 15:36:20 -05:00
f66344ed81
* gnu/services/linux.scm (%earlyoom-log-rotation): New variable. (earlyoom-service-type): Add service-extension for log rotation.
436 lines
16 KiB
Scheme
436 lines
16 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2020 Maxim Cournoyer <maxim.cournoyer@gmail.com>
|
||
;;; Copyright © 2020 Brice Waegeneire <brice@waegenei.re>
|
||
;;; Copyright © 2020, 2023 Efraim Flashner <efraim@flashner.co.il>
|
||
;;; Copyright © 2021 raid5atemyhomework <raid5atemyhomework@protonmail.com>
|
||
;;; Copyright © 2021 B. Wilson <elaexuotee@wilsonb.com>
|
||
;;; Copyright © 2022 Josselin Poiret <dev@jpoiret.xyz>
|
||
;;; Copyright © 2023 Bruno Victal <mirai@makinata.eu>
|
||
;;;
|
||
;;; 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 (gnu services linux)
|
||
#:use-module (guix diagnostics)
|
||
#:use-module (guix gexp)
|
||
#:use-module (guix records)
|
||
#:use-module (guix modules)
|
||
#:use-module (guix i18n)
|
||
#:use-module (guix ui)
|
||
#:use-module (gnu services)
|
||
#:use-module (gnu services admin)
|
||
#:use-module (gnu services base)
|
||
#:use-module (gnu services configuration)
|
||
#:use-module (gnu services mcron)
|
||
#:use-module (gnu services shepherd)
|
||
#:use-module (gnu packages linux)
|
||
#:use-module (srfi srfi-1)
|
||
#:use-module (srfi srfi-26)
|
||
#:use-module (srfi srfi-34)
|
||
#:use-module (srfi srfi-35)
|
||
#:use-module (ice-9 format)
|
||
#:use-module (ice-9 match)
|
||
#:export (earlyoom-configuration
|
||
earlyoom-configuration?
|
||
earlyoom-configuration-earlyoom
|
||
earlyoom-configuration-minimum-available-memory
|
||
earlyoom-configuration-minimum-free-swap
|
||
earlyoom-configuration-prefer-regexp
|
||
earlyoom-configuration-avoid-regexp
|
||
earlyoom-configuration-memory-report-interval
|
||
earlyoom-configuration-ignore-positive-oom-score-adj?
|
||
earlyoom-configuration-show-debug-messages?
|
||
earlyoom-configuration-send-notification-command
|
||
earlyoom-service-type
|
||
|
||
fstrim-configuration
|
||
fstrim-configuration?
|
||
fstrim-configuration-package
|
||
fstrim-configuration-schedule
|
||
fstrim-configuration-listed-in
|
||
fstrim-configuration-verbose?
|
||
fstrim-configuration-quiet-unsupported?
|
||
fstrim-configuration-extra-arguments
|
||
fstrim-service-type
|
||
|
||
kernel-module-loader-service-type
|
||
|
||
rasdaemon-configuration
|
||
rasdaemon-configuration?
|
||
rasdaemon-configuration-record?
|
||
rasdaemon-service-type
|
||
|
||
zram-device-configuration
|
||
zram-device-configuration?
|
||
zram-device-configuration-size
|
||
zram-device-configuration-compression-algorithm
|
||
zram-device-configuration-memory-limit
|
||
zram-device-configuration-priority
|
||
zram-device-service-type))
|
||
|
||
|
||
;;;
|
||
;;; Early OOM daemon.
|
||
;;;
|
||
|
||
(define-record-type* <earlyoom-configuration>
|
||
earlyoom-configuration make-earlyoom-configuration
|
||
earlyoom-configuration?
|
||
(earlyoom earlyoom-configuration-earlyoom
|
||
(default earlyoom))
|
||
(minimum-available-memory earlyoom-configuration-minimum-available-memory
|
||
(default 10)) ; in percent
|
||
(minimum-free-swap earlyoom-configuration-minimum-free-swap
|
||
(default 10)) ; in percent
|
||
(prefer-regexp earlyoom-configuration-prefer-regexp ; <string>
|
||
(default #f))
|
||
(avoid-regexp earlyoom-configuration-avoid-regexp ; <string>
|
||
(default #f))
|
||
(memory-report-interval earlyoom-configuration-memory-report-interval
|
||
(default 0)) ; in seconds; 0 means disabled
|
||
(ignore-positive-oom-score-adj?
|
||
earlyoom-configuration-ignore-positive-oom-score-adj? (default #f))
|
||
(run-with-higher-priority? earlyoom-configuration-run-with-higher-priority?
|
||
(default #f))
|
||
(show-debug-messages? earlyoom-configuration-show-debug-messages?
|
||
(default #f))
|
||
(send-notification-command
|
||
earlyoom-configuration-send-notification-command ; <string>
|
||
(default #f)))
|
||
|
||
(define (earlyoom-configuration->command-line-args config)
|
||
"Translate a <earlyoom-configuration> object to its command line arguments
|
||
representation."
|
||
(match config
|
||
(($ <earlyoom-configuration> earlyoom minimum-available-memory
|
||
minimum-free-swap prefer-regexp avoid-regexp
|
||
memory-report-interval
|
||
ignore-positive-oom-score-adj?
|
||
run-with-higher-priority? show-debug-messages?
|
||
send-notification-command)
|
||
`(,(file-append earlyoom "/bin/earlyoom")
|
||
,@(if minimum-available-memory
|
||
(list "-m" (format #f "~s" minimum-available-memory))
|
||
'())
|
||
,@(if minimum-free-swap
|
||
(list "-s" (format #f "~s" minimum-free-swap))
|
||
'())
|
||
,@(if prefer-regexp
|
||
(list "--prefer" prefer-regexp)
|
||
'())
|
||
,@(if avoid-regexp
|
||
(list "--avoid" avoid-regexp)
|
||
'())
|
||
"-r" ,(format #f "~s" memory-report-interval)
|
||
,@(if ignore-positive-oom-score-adj?
|
||
(list "-i")
|
||
'())
|
||
,@(if run-with-higher-priority?
|
||
(list "-p")
|
||
'())
|
||
,@(if show-debug-messages?
|
||
(list "-d")
|
||
'())
|
||
,@(if send-notification-command
|
||
(list "-N" send-notification-command)
|
||
'())))))
|
||
|
||
(define (earlyoom-shepherd-service config)
|
||
(shepherd-service
|
||
(documentation "Run the Early OOM daemon.")
|
||
(provision '(earlyoom))
|
||
(start #~(make-forkexec-constructor
|
||
'#$(earlyoom-configuration->command-line-args config)
|
||
#:log-file "/var/log/earlyoom.log"))
|
||
(stop #~(make-kill-destructor))))
|
||
|
||
(define %earlyoom-log-rotation
|
||
(list (log-rotation
|
||
(files '("/var/log/earlyoom.log")))))
|
||
|
||
(define earlyoom-service-type
|
||
(service-type
|
||
(name 'earlyoom)
|
||
(default-value (earlyoom-configuration))
|
||
(extensions
|
||
(list (service-extension shepherd-root-service-type
|
||
(compose list earlyoom-shepherd-service))
|
||
(service-extension rottlog-service-type
|
||
(const %earlyoom-log-rotation))))
|
||
(description "Run @command{earlyoom}, the Early OOM daemon.")))
|
||
|
||
|
||
;;;
|
||
;;; fstrim
|
||
;;;
|
||
|
||
(define (mcron-time? x)
|
||
(or (procedure? x) (string? x) (list? x)))
|
||
|
||
(define-maybe list-of-strings (prefix fstrim-))
|
||
|
||
(define (fstrim-serialize-boolean field-name value)
|
||
(list (format #f "~:[~;--~a~]" value
|
||
;; Drop trailing '?' character.
|
||
(string-drop-right (symbol->string field-name) 1))))
|
||
|
||
(define (fstrim-serialize-list-of-strings field-name value)
|
||
(list (string-append "--" (symbol->string field-name))
|
||
#~(string-join '#$value ":")))
|
||
|
||
(define-configuration fstrim-configuration
|
||
(package
|
||
(file-like util-linux)
|
||
"The package providing the @command{fstrim} command."
|
||
empty-serializer)
|
||
(schedule
|
||
(mcron-time "0 0 * * 0")
|
||
"Schedule for launching @command{fstrim}. This can be a procedure, a list
|
||
or a string. For additional information, see @ref{Guile Syntax,,
|
||
Job specification, mcron, the mcron manual}. By default this is set to run
|
||
weekly on Sunday at 00:00."
|
||
empty-serializer)
|
||
;; The following are fstrim-related options.
|
||
(listed-in
|
||
(maybe-list-of-strings '("/etc/fstab" "/proc/self/mountinfo"))
|
||
;; Note: documentation sourced from the fstrim manpage.
|
||
"List of files in fstab or kernel mountinfo format. All missing or
|
||
empty files are silently ignored. The evaluation of the list @emph{stops}
|
||
after the first non-empty file. File systems with @code{X-fstrim.notrim} mount
|
||
option in fstab are skipped.")
|
||
(verbose?
|
||
(boolean #t)
|
||
"Verbose execution.")
|
||
(quiet-unsupported?
|
||
(boolean #t)
|
||
"Suppress error messages if trim operation (ioctl) is unsupported.")
|
||
(extra-arguments
|
||
maybe-list-of-strings
|
||
"Extra options to append to @command{fstrim} (run @samp{man fstrim} for
|
||
more information)."
|
||
(serializer
|
||
(lambda (_ value)
|
||
(if (maybe-value-set? value)
|
||
value '()))))
|
||
(prefix fstrim-))
|
||
|
||
(define (serialize-fstrim-configuration config)
|
||
(concatenate
|
||
(filter list?
|
||
(map (lambda (field)
|
||
((configuration-field-serializer field)
|
||
(configuration-field-name field)
|
||
((configuration-field-getter field) config)))
|
||
fstrim-configuration-fields))))
|
||
|
||
(define (fstrim-mcron-job config)
|
||
(match-record config <fstrim-configuration> (package schedule)
|
||
#~(job
|
||
;; Note: The “if” below is to ensure that
|
||
;; lists are ungexp'd correctly since @var{schedule}
|
||
;; can be either a procedure, a string or a list.
|
||
#$(if (list? schedule)
|
||
#~'(#$@schedule)
|
||
schedule)
|
||
(lambda ()
|
||
(system* #$(file-append package "/sbin/fstrim")
|
||
#$@(serialize-fstrim-configuration config)))
|
||
"fstrim")))
|
||
|
||
(define fstrim-service-type
|
||
(service-type
|
||
(name 'fstrim)
|
||
(extensions
|
||
(list (service-extension mcron-service-type
|
||
(compose list fstrim-mcron-job))))
|
||
(description "Discard unused blocks from file systems.")
|
||
(default-value (fstrim-configuration))))
|
||
|
||
|
||
;;;
|
||
;;; Kernel module loader.
|
||
;;;
|
||
|
||
(define kernel-module-loader-shepherd-service
|
||
(match-lambda
|
||
((and (? list? kernel-modules) ((? string?) ...))
|
||
(shepherd-service
|
||
(documentation "Load kernel modules.")
|
||
(provision '(kernel-module-loader))
|
||
(requirement '())
|
||
(one-shot? #t)
|
||
(modules `((srfi srfi-1)
|
||
(srfi srfi-34)
|
||
(srfi srfi-35)
|
||
(rnrs io ports)
|
||
,@%default-modules))
|
||
(start
|
||
#~(lambda _
|
||
(cond
|
||
((null? '#$kernel-modules) #t)
|
||
((file-exists? "/proc/sys/kernel/modprobe")
|
||
(let ((modprobe (call-with-input-file
|
||
"/proc/sys/kernel/modprobe" get-line)))
|
||
(guard (c ((message-condition? c)
|
||
(format (current-error-port) "~a~%"
|
||
(condition-message c))
|
||
#f))
|
||
(every (lambda (module)
|
||
(invoke/quiet modprobe "--" module))
|
||
'#$kernel-modules))))
|
||
(else
|
||
(format (current-error-port) "error: ~a~%"
|
||
"Kernel is missing loadable module support.")
|
||
#f))))))))
|
||
|
||
(define kernel-module-loader-service-type
|
||
(service-type
|
||
(name 'kernel-module-loader)
|
||
(description "Load kernel modules.")
|
||
(extensions
|
||
(list (service-extension shepherd-root-service-type
|
||
(compose list kernel-module-loader-shepherd-service))))
|
||
(compose concatenate)
|
||
(extend append)
|
||
(default-value '())))
|
||
|
||
|
||
;;;
|
||
;;; Reliability, Availability, and Serviceability (RAS) daemon
|
||
;;;
|
||
|
||
(define-record-type* <rasdaemon-configuration>
|
||
rasdaemon-configuration make-rasdaemon-configuration
|
||
rasdaemon-configuration?
|
||
(record? rasdaemon-configuration-record? (default #f)))
|
||
|
||
(define (rasdaemon-configuration->command-line-args config)
|
||
"Translate <rasdaemon-configuration> to its command line arguments
|
||
representation"
|
||
(let ((record? (rasdaemon-configuration-record? config)))
|
||
`(,(file-append rasdaemon "/sbin/rasdaemon")
|
||
"--foreground" ,@(if record? '("--record") '()))))
|
||
|
||
(define (rasdaemon-activation config)
|
||
(let ((record? (rasdaemon-configuration-record? config))
|
||
(rasdaemon-dir "/var/lib/rasdaemon"))
|
||
(with-imported-modules '((guix build utils))
|
||
#~(if #$record? (mkdir-p #$rasdaemon-dir)))))
|
||
|
||
(define (rasdaemon-shepherd-service config)
|
||
(shepherd-service
|
||
(documentation "Run rasdaemon")
|
||
(provision '(rasdaemon))
|
||
(requirement '(syslogd))
|
||
(start #~(make-forkexec-constructor
|
||
'#$(rasdaemon-configuration->command-line-args config)))
|
||
(stop #~(make-kill-destructor))))
|
||
|
||
(define rasdaemon-service-type
|
||
(service-type
|
||
(name 'rasdaemon)
|
||
(default-value (rasdaemon-configuration))
|
||
(extensions
|
||
(list (service-extension shepherd-root-service-type
|
||
(compose list rasdaemon-shepherd-service))
|
||
(service-extension activation-service-type rasdaemon-activation)))
|
||
(compose concatenate)
|
||
(description "Run @command{rasdaemon}, the RAS monitor")))
|
||
|
||
|
||
;;;
|
||
;;; Kernel module loader.
|
||
;;;
|
||
|
||
(define-record-type* <zram-device-configuration>
|
||
zram-device-configuration make-zram-device-configuration
|
||
zram-device-configuration?
|
||
(size zram-device-configuration-size
|
||
(default "1G")) ; string or integer
|
||
(compression-algorithm zram-device-configuration-compression-algorithm
|
||
(default 'lzo)) ; symbol
|
||
(memory-limit zram-device-configuration-memory-limit
|
||
(default 0)) ; string or integer
|
||
(priority zram-device-configuration-priority
|
||
(default #f) ; integer | #f
|
||
(delayed) ; to avoid printing the deprecation
|
||
; warning multiple times
|
||
(sanitize warn-zram-priority-change)))
|
||
|
||
(define-with-syntax-properties
|
||
(warn-zram-priority-change (priority properties))
|
||
(if (eqv? priority -1)
|
||
(begin
|
||
(warning (source-properties->location properties)
|
||
(G_ "using -1 for zram priority is deprecated~%"))
|
||
(display-hint (G_ "Use #f or leave as default instead (@pxref{Linux \
|
||
Services})."))
|
||
#f)
|
||
priority))
|
||
|
||
(define (zram-device-configuration->udev-string config)
|
||
"Translate a <zram-device-configuration> into a string which can be
|
||
placed in a udev rules file."
|
||
(match config
|
||
(($ <zram-device-configuration> size compression-algorithm memory-limit priority)
|
||
(string-append
|
||
"KERNEL==\"zram0\", "
|
||
"ATTR{comp_algorithm}=\"" (symbol->string compression-algorithm) "\" "
|
||
(if (not (or (equal? "0" size)
|
||
(equal? 0 size)))
|
||
(string-append "ATTR{disksize}=\"" (if (number? size)
|
||
(number->string size)
|
||
size)
|
||
"\" ")
|
||
"")
|
||
(if (not (or (equal? "0" memory-limit)
|
||
(equal? 0 memory-limit)))
|
||
(string-append "ATTR{mem_limit}=\"" (if (number? memory-limit)
|
||
(number->string memory-limit)
|
||
memory-limit)
|
||
"\" ")
|
||
"")
|
||
"RUN+=\"/run/current-system/profile/sbin/mkswap /dev/zram0\" "
|
||
"RUN+=\"/run/current-system/profile/sbin/swapon "
|
||
;; TODO: Revert to simply use 'priority' after removing the deprecation
|
||
;; warning and the delayed property of the field.
|
||
(let ((priority* (force priority)))
|
||
(if priority*
|
||
(format #f "--priority ~a " priority*)
|
||
""))
|
||
"/dev/zram0\"\n"))))
|
||
|
||
(define %zram-device-config
|
||
`("modprobe.d/zram.conf"
|
||
,(plain-file "zram.conf"
|
||
"options zram num_devices=1")))
|
||
|
||
(define (zram-device-udev-rule config)
|
||
(file->udev-rule "99-zram.rules"
|
||
(plain-file "99-zram.rules"
|
||
(zram-device-configuration->udev-string config))))
|
||
|
||
(define zram-device-service-type
|
||
(service-type
|
||
(name 'zram)
|
||
(default-value (zram-device-configuration))
|
||
(extensions
|
||
(list (service-extension kernel-module-loader-service-type
|
||
(const (list "zram")))
|
||
(service-extension etc-service-type
|
||
(const (list %zram-device-config)))
|
||
(service-extension udev-service-type
|
||
(compose list zram-device-udev-rule))))
|
||
(description "Creates a zram swap device.")))
|