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vm: Allow a volume name to be specified for the root partition.

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* guix/build/vm.scm (format-partition): Add #:label parameter, and honor
  it.
  (initialize-hard-disk): Add #:file-system-label parameter, and pass it
  to 'format-partition'.
* gnu/system/vm.scm (qemu-image): Add #:file-system-label parameter and
  pass it to 'initialize-hard-disk'.
This commit is contained in:
Ludovic Courtès 2014-05-29 23:07:43 +02:00
parent ff0bf0aca5
commit ef9fc40dda
2 changed files with 25 additions and 13 deletions
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13
gnu/system/vm.scm
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@ -196,15 +196,17 @@ (define* (qemu-image #:key
(disk-image-size (* 100 (expt 2 20)))
(disk-image-format "qcow2")
(file-system-type "ext4")
file-system-label
grub-configuration
(register-closures? #t)
(inputs '())
copy-inputs?)
"Return a bootable, stand-alone QEMU image of type DISK-IMAGE-FORMAT (e.g.,
'qcow2' or 'raw'), with a root partition of type FILE-SYSTEM-TYPE. The
returned image is a full disk image, with a GRUB installation that uses
GRUB-CONFIGURATION as its configuration file (GRUB-CONFIGURATION must be the
name of a file in the VM.)
'qcow2' or 'raw'), with a root partition of type FILE-SYSTEM-TYPE.
Optionally, FILE-SYSTEM-LABEL can be specified as the volume name for the root
partition. The returned image is a full disk image, with a GRUB installation
that uses GRUB-CONFIGURATION as its configuration file (GRUB-CONFIGURATION
must be the name of a file in the VM.)
INPUTS is a list of inputs (as for packages). When COPY-INPUTS? is true, copy
all of INPUTS into the image being built. When REGISTER-CLOSURES? is true,
@ -243,7 +245,8 @@ (define* (qemu-image #:key
#:copy-closures? #$copy-inputs?
#:register-closures? #$register-closures?
#:disk-image-size #$disk-image-size
#:file-system-type #$file-system-type)
#:file-system-type #$file-system-type
#:file-system-label #$file-system-label)
(reboot))))
#:system system
#:make-disk-image? #t

25
guix/build/vm.scm
View file

@ -158,10 +158,16 @@ (define (graph-from-file file)
(define MS_BIND 4096) ; <sys/mounts.h> again!
(define (format-partition partition type)
"Create a file system TYPE on PARTITION."
(define* (format-partition partition type
#:key label)
"Create a file system TYPE on PARTITION. If LABEL is true, use that as the
volume name."
(format #t "creating ~a partition...\n" type)
(unless (zero? (system* (string-append "mkfs." type) "-F" partition))
(unless (zero? (apply system* (string-append "mkfs." type)
"-F" partition
(if label
`("-L" ,label)
'())))
(error "failed to create partition")))
(define* (initialize-root-partition target-directory
@ -204,13 +210,15 @@ (define* (initialize-hard-disk device
grub.cfg
disk-image-size
(file-system-type "ext4")
file-system-label
(closures '())
copy-closures?
(register-closures? #t))
"Initialize DEVICE, a disk of DISK-IMAGE-SIZE bytes, with a
FILE-SYSTEM-TYPE partition, and with GRUB installed. If REGISTER-CLOSURES? is
true, register all of CLOSURES is the partition's store. If COPY-CLOSURES? is
true, copy all of CLOSURES to the partition."
"Initialize DEVICE, a disk of DISK-IMAGE-SIZE bytes, with a FILE-SYSTEM-TYPE
partition with (optionally) FILE-SYSTEM-LABEL as its volume name, and with
GRUB installed. If REGISTER-CLOSURES? is true, register all of CLOSURES is
the partition's store. If COPY-CLOSURES? is true, copy all of CLOSURES to the
partition."
(define target-directory
"/fs")
@ -220,7 +228,8 @@ (define partition
(initialize-partition-table device
(- disk-image-size (* 5 (expt 2 20))))
(format-partition partition file-system-type)
(format-partition partition file-system-type
#:label file-system-label)
(display "mounting partition...\n")
(mkdir target-directory)