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system: Mapped devices needed for boot do not yield Shepherd services. 

Fixes <https://bugs.gnu.org/31889>.
Reported by Taylan Kammer <taylanbayirli@gmail.com>.

* gnu/system.scm (non-boot-file-system-service)[mapped-devices-for-boot]:
New variable.
Remove dependencies of FS that are members of MAPPED-DEVICES-FOR-BOOT.
(mapped-device-user): Rename to...
(mapped-device-users): ... this.  Use 'filter' instead of 'find'.
(operating-system-user-mapped-devices)
(operating-system-boot-mapped-devices): Use 'any
file-system-needed-for-boot?' instead of looking at the first user.
* tests/system.scm ("non-boot-file-system-service"): New test.
This commit is contained in:
Ludovic Courtès 2018-06-21 23:50:47 +02:00
parent 1f1d76a178
commit 68a58775e0
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GPG Key ID: 090B11993D9AEBB5
2 changed files with 42 additions and 15 deletions
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34
gnu/system.scm
View File

@ -359,6 +359,9 @@ marked as 'needed-for-boot'."
(remove file-system-needed-for-boot?
(operating-system-file-systems os)))
(define mapped-devices-for-boot
(operating-system-boot-mapped-devices os))
(define (device-mappings fs)
(let ((device (file-system-device fs)))
(if (string? device) ;title is 'device
@ -374,21 +377,23 @@ marked as 'needed-for-boot'."
(file-system
(inherit fs)
(dependencies
(delete-duplicates (append (device-mappings fs)
(file-system-dependencies fs))
eq?))))
(delete-duplicates
(remove (cut member <> mapped-devices-for-boot)
(append (device-mappings fs)
(file-system-dependencies fs)))
eq?))))
(service file-system-service-type
(map add-dependencies file-systems)))
(define (mapped-device-user device file-systems)
"Return a file system among FILE-SYSTEMS that uses DEVICE, or #f."
(define (mapped-device-users device file-systems)
"Return the subset of FILE-SYSTEMS that use DEVICE."
(let ((target (string-append "/dev/mapper/" (mapped-device-target device))))
(find (lambda (fs)
(or (member device (file-system-dependencies fs))
(and (string? (file-system-device fs))
(string=? (file-system-device fs) target))))
file-systems)))
(filter (lambda (fs)
(or (member device (file-system-dependencies fs))
(and (string? (file-system-device fs))
(string=? (file-system-device fs) target))))
file-systems)))
(define (operating-system-user-mapped-devices os)
"Return the subset of mapped devices that can be installed in
@ -396,9 +401,8 @@ user-land--i.e., those not needed during boot."
(let ((devices (operating-system-mapped-devices os))
(file-systems (operating-system-file-systems os)))
(filter (lambda (md)
(let ((user (mapped-device-user md file-systems)))
(or (not user)
(not (file-system-needed-for-boot? user)))))
(let ((users (mapped-device-users md file-systems)))
(not (any file-system-needed-for-boot? users))))
devices)))
(define (operating-system-boot-mapped-devices os)
@ -407,8 +411,8 @@ from the initrd."
(let ((devices (operating-system-mapped-devices os))
(file-systems (operating-system-file-systems os)))
(filter (lambda (md)
(let ((user (mapped-device-user md file-systems)))
(and user (file-system-needed-for-boot? user))))
(let ((users (mapped-device-users md file-systems)))
(any file-system-needed-for-boot? users)))
devices)))
(define (device-mapping-services os)

23
tests/system.scm
View File

@ -19,6 +19,7 @@
(define-module (test-system)
#:use-module (gnu)
#:use-module ((gnu services) #:select (service-value))
#:use-module (guix store)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-64))
@ -117,4 +118,26 @@
(type "ext4"))
%base-file-systems)))))
(test-equal "non-boot-file-system-service"
'()
;; Make sure that mapped devices with at least one needed-for-boot user are
;; handled exclusively from the initrd. See <https://bugs.gnu.org/31889>.
(append-map file-system-dependencies
(service-value
((@@ (gnu system) non-boot-file-system-service)
(operating-system
(inherit %os-with-mapped-device)
(file-systems
(list (file-system
(mount-point "/foo/bar")
(device "qux:baz")
(type "none")
(dependencies (list %luks-device)))
(file-system
(device (file-system-label "my-root"))
(mount-point "/")
(type "ext4")
(dependencies (list %luks-device))))))))))
(test-end)