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authorChris Marusich <cmmarusich@gmail.com>2016-10-28 03:07:18 -0700
committerLudovic Courtès <ludo@gnu.org>2016-10-30 22:59:46 +0100
commit1ef8b72a7f87afe7cffe52393d99e1b14e4770e1 (patch)
tree37712ee4e04fe2d430d3c3009d388cb40421be06 /gnu/system.scm
parentb7f3cf2c9ada1b607c383541fbd620e98107c576 (diff)
downloadguix-1ef8b72a7f87afe7cffe52393d99e1b14e4770e1.tar
guix-1ef8b72a7f87afe7cffe52393d99e1b14e4770e1.tar.gz
system: Record store file system info in each generation.
* gnu/system.scm (<boot-parameters>)[store-device, store-mount-point]: New fields. (read-boot-parameters): Initialize them. (operating-system-grub.cfg): Likewise. Remove STORE-FS argument from call to 'grub-configuration-file'. (operating-system-parameters-file): Add 'store' element in 'boot-parameters'. * gnu/system/grub.scm (strip-mount-point): Replace 'store-fs' parameter by 'mount-point'; adjust accordingly. Adjust callers. (<menu-entry>)[device, device-mount-point]: New fields. (eye-candy): Replace 'root-fs' parameter by 'store-device'; add 'store-mount-point'. Use keyword arguments for 'system' and 'port'. (grub-root-search): Remove 'root-fs' by 'device' and adjust accordingly. (grub-configuration-file): Remove 'store-fs' parameter. Adjust accordingly. * guix/scripts/system.scm (previous-grub-entries): Initialize 'device' and 'device-mount-point' fields from PARAMS. * doc/guix.texi (GRUB Configuration): Document 'device' and 'device-mount-point'. Explain that 'linux' can be prefixed by a GRUB device name. Co-authored-by: Ludovic Courtès <ludo@gnu.org>
Diffstat (limited to 'gnu/system.scm')
-rw-r--r--gnu/system.scm59
1 files changed, 49 insertions, 10 deletions
diff --git a/gnu/system.scm b/gnu/system.scm
index 38ae8f1771..259875d761 100644
--- a/gnu/system.scm
+++ b/gnu/system.scm
@@ -2,6 +2,7 @@
;;; Copyright © 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2015 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2015, 2016 Alex Kost <alezost@gmail.com>
+;;; Copyright © 2016 Chris Marusich <cmmarusich@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -99,6 +100,8 @@
boot-parameters?
boot-parameters-label
boot-parameters-root-device
+ boot-parameters-store-device
+ boot-parameters-store-mount-point
boot-parameters-kernel
boot-parameters-kernel-arguments
boot-parameters-initrd
@@ -733,6 +736,12 @@ listed in OS. The C library expects to find it under
(file-system-device root-fs)))
(entries -> (list (menu-entry
(label label)
+
+ ;; The device where the kernel and initrd live.
+ (device (file-system-device store-fs))
+ (device-mount-point
+ (file-system-mount-point store-fs))
+
(linux kernel)
(linux-arguments
(cons* (string-append "--root=" root-device)
@@ -741,8 +750,7 @@ listed in OS. The C library expects to find it under
"/boot")
(operating-system-kernel-arguments os)))
(initrd initrd)))))
- (grub-configuration-file (operating-system-bootloader os)
- store-fs entries
+ (grub-configuration-file (operating-system-bootloader os) entries
#:old-entries old-entries)))
(define (operating-system-parameters-file os)
@@ -750,16 +758,24 @@ listed in OS. The C library expects to find it under
this file is the reconstruction of GRUB menu entries for old configurations."
(mlet %store-monad ((initrd (operating-system-initrd-file os))
(root -> (operating-system-root-file-system os))
+ (store -> (operating-system-store-file-system os))
(label -> (kernel->grub-label
(operating-system-kernel os))))
(gexp->file "parameters"
- #~(boot-parameters (version 0)
- (label #$label)
- (root-device #$(file-system-device root))
- (kernel #$(operating-system-kernel-file os))
- (kernel-arguments
- #$(operating-system-kernel-arguments os))
- (initrd #$initrd))
+ #~(boot-parameters
+ (version 0)
+ (label #$label)
+ (root-device #$(file-system-device root))
+ (kernel #$(operating-system-kernel-file os))
+ (kernel-arguments
+ #$(operating-system-kernel-arguments os))
+ (initrd #$initrd)
+ (store
+ (device #$(case (file-system-title store)
+ ((uuid) (file-system-device store))
+ ((label) (file-system-device store))
+ (else #f)))
+ (mount-point #$(file-system-mount-point store))))
#:set-load-path? #f)))
@@ -770,7 +786,16 @@ this file is the reconstruction of GRUB menu entries for old configurations."
(define-record-type* <boot-parameters>
boot-parameters make-boot-parameters boot-parameters?
(label boot-parameters-label)
+ ;; Because we will use the 'store-device' to create the GRUB search command,
+ ;; the 'store-device' has slightly different semantics than 'root-device'.
+ ;; The 'store-device' can be a file system uuid, a file system label, or #f,
+ ;; but it cannot be a device path such as "/dev/sda3", since GRUB would not
+ ;; understand that. The 'root-device', on the other hand, corresponds
+ ;; exactly to the device field of the <file-system> object representing the
+ ;; OS's root file system, so it might be a device path like "/dev/sda3".
(root-device boot-parameters-root-device)
+ (store-device boot-parameters-store-device)
+ (store-mount-point boot-parameters-store-mount-point)
(kernel boot-parameters-kernel)
(kernel-arguments boot-parameters-kernel-arguments)
(initrd boot-parameters-initrd))
@@ -804,7 +829,21 @@ this file is the reconstruction of GRUB menu entries for old configurations."
(('initrd ('string-append directory file)) ;the old format
(string-append directory file))
(('initrd (? string? file))
- file)))))
+ file)))
+
+ (store-device
+ (match (assq 'store rest)
+ (('store ('device device) _ ...)
+ device)
+ (_ ;the old format
+ root)))
+
+ (store-mount-point
+ (match (assq 'store rest)
+ (('store ('device _) ('mount-point mount-point) _ ...)
+ mount-point)
+ (_ ;the old format
+ "/")))))
(x ;unsupported format
(warning (_ "unrecognized boot parameters for '~a'~%")
system)