system: Fix 'guix system' when root fs is named by UUID.

Fixes <https://bugs.gnu.org/23881>.

* guix/scripts/system.scm (previous-grub-entries)
(display-system-generation): Handle the case where the root device is
specified by UUID.
This commit is contained in:
Mark H Weaver 2016-08-20 03:49:42 -04:00
parent d760a2fc18
commit c52bf877e9
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1 changed files with 15 additions and 8 deletions

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@ -52,6 +52,7 @@
#:use-module (srfi srfi-35)
#:use-module (srfi srfi-37)
#:use-module (ice-9 match)
#:use-module (rnrs bytevectors)
#:export (guix-system
read-operating-system))
@ -397,6 +398,9 @@ it atomically, and then run OS's activation script."
read-boot-parameters))
(label (boot-parameters-label params))
(root (boot-parameters-root-device params))
(root-device (if (bytevector? root)
(uuid->string root)
root))
(kernel (boot-parameters-kernel params))
(kernel-arguments (boot-parameters-kernel-arguments params)))
(menu-entry
@ -405,7 +409,7 @@ it atomically, and then run OS's activation script."
(seconds->string time) ")"))
(linux kernel)
(linux-arguments
(cons* (string-append "--root=" root)
(cons* (string-append "--root=" root-device)
#~(string-append "--system=" #$system)
#~(string-append "--load=" #$system "/boot")
kernel-arguments))
@ -473,18 +477,21 @@ list of services."
#:optional (profile %system-profile))
"Display a summary of system generation NUMBER in a human-readable format."
(unless (zero? number)
(let* ((generation (generation-file-name profile number))
(param-file (string-append generation "/parameters"))
(params (call-with-input-file param-file read-boot-parameters))
(label (boot-parameters-label params))
(root (boot-parameters-root-device params))
(kernel (boot-parameters-kernel params)))
(let* ((generation (generation-file-name profile number))
(param-file (string-append generation "/parameters"))
(params (call-with-input-file param-file read-boot-parameters))
(label (boot-parameters-label params))
(root (boot-parameters-root-device params))
(root-device (if (bytevector? root)
(uuid->string root)
root))
(kernel (boot-parameters-kernel params)))
(display-generation profile number)
(format #t (_ " file name: ~a~%") generation)
(format #t (_ " canonical file name: ~a~%") (readlink* generation))
;; TRANSLATORS: Please preserve the two-space indentation.
(format #t (_ " label: ~a~%") label)
(format #t (_ " root device: ~a~%") root)
(format #t (_ " root device: ~a~%") root-device)
(format #t (_ " kernel: ~a~%") kernel))))
(define* (list-generations pattern #:optional (profile %system-profile))