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-rw-r--r--gnu/system/mapped-devices.scm51
1 files changed, 48 insertions, 3 deletions
diff --git a/gnu/system/mapped-devices.scm b/gnu/system/mapped-devices.scm
index e6ac635231..a2cca0a93b 100644
--- a/gnu/system/mapped-devices.scm
+++ b/gnu/system/mapped-devices.scm
@@ -1,7 +1,7 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014, 2015, 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016 Andreas Enge <andreas@enge.fr>
-;;; Copyright © 2017 Mark H Weaver <mhw@netris.org>
+;;; Copyright © 2017, 2018 Mark H Weaver <mhw@netris.org>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -25,13 +25,14 @@
#:use-module (guix i18n)
#:use-module ((guix utils)
#:select (source-properties->location
+ &fix-hint
&error-location))
#:use-module (gnu services)
#:use-module (gnu services shepherd)
#:use-module (gnu system uuid)
- #:use-module ((gnu system linux-initrd)
- #:select (check-device-initrd-modules))
#:autoload (gnu build file-systems) (find-partition-by-luks-uuid)
+ #:autoload (gnu build linux-modules)
+ (device-module-aliases matching-modules known-module-aliases)
#:autoload (gnu packages cryptsetup) (cryptsetup-static)
#:autoload (gnu packages linux) (mdadm-static)
#:use-module (srfi srfi-1)
@@ -55,6 +56,8 @@
device-mapping-service-type
device-mapping-service
+ check-device-initrd-modules ;XXX: needs a better place
+
luks-device-mapping
raid-device-mapping))
@@ -108,6 +111,48 @@
;;;
+;;; Static checks.
+;;;
+
+(define (check-device-initrd-modules device linux-modules location)
+ "Raise an error if DEVICE needs modules beyond LINUX-MODULES to operate.
+DEVICE must be a \"/dev\" file name."
+ (define aliases
+ ;; Attempt to load 'modules.alias' from the current kernel, assuming we're
+ ;; on GuixSD, and assuming that corresponds to the kernel we'll be
+ ;; installing. Skip the whole thing if that file cannot be read.
+ (catch 'system-error
+ (lambda ()
+ (known-module-aliases))
+ (const #f)))
+
+ (when aliases
+ (let ((modules (delete-duplicates
+ (append-map (cut matching-modules <> aliases)
+ (device-module-aliases device)))))
+ (unless (every (cute member <> linux-modules) modules)
+ (raise (condition
+ (&message
+ (message (format #f (G_ "you may need these modules \
+in the initrd for ~a:~{ ~a~}")
+ device modules)))
+ (&fix-hint
+ (hint (format #f (G_ "Try adding them to the
+@code{initrd-modules} field of your @code{operating-system} declaration, along
+these lines:
+
+@example
+ (operating-system
+ ;; @dots{}
+ (initrd-modules (append (list~{ ~s~})
+ %base-initrd-modules)))
+@end example\n")
+ modules)))
+ (&error-location
+ (location (source-properties->location location)))))))))
+
+
+;;;
;;; Common device mappings.
;;;