Age | Commit message (Expand) | Author |
2016-05-04 | tests: Add whole-system test....* gnu/system/vm.scm (virtualized-operating-system): Export.
* gnu/tests/base.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.
* Makefile.am (check-system): New target.
| Ludovic Courtès |
2016-05-04 | Add (gnu tests) and (gnu build marionette)....* gnu/build/marionette.scm, gnu/tests.scm: New files.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add them.
* gnu/system/vm.scm (common-qemu-options): Remove '-serial stdio'.
| Ludovic Courtès |
2016-04-29 | guix system: Reduce size of image produced for 'vm' action....This reduces the size of the image produced by 'guix system vm' from
26 MiB to 9 MiB.
* gnu/system/vm.scm (system-qemu-image/shared-store):
(system-qemu-image/shared-store-script): Change the default
value of #:disk-image-size to 30 MiB when not FULL-BOOT?.
* guix/scripts/system.scm (system-derivation-for-action): Likewise for
the 'vm' action.
| Ludovic Courtès |
2016-02-22 | vm: Only pass "-enable-kvm" to qemu if /dev/kvm is present....Fixes <http://bugs.gnu.org/22633>.
* gnu/build/vm.scm (load-in-linux-vm): Only pass "-enable-kvm" flag to qemu
if "/dev/kvm" is present.
* gnu/system/vm.scm (common-kvm-options): Same as above.
| Christopher Allan Webber |
2016-02-08 | file-systems: Spawn a Bournish REPL upon fsck failure....Fixes <http://bugs.gnu.org/22588>.
Reported by Mark H Weaver <mhw@netris.org>.
* gnu/build/file-systems.scm (check-file-system): Pass
%BOURNISH-LANGUAGE as the argument to 'start-repl'.
* gnu/services.scm (activation-script): Add (guix build bournish).
* gnu/services/base.scm (file-system-shepherd-service)[imported-modules]:
Likewise.
* gnu/system/linux-container.scm (container-script): Likewise.
* gnu/system/vm.scm (expression->derivation-in-linux-vm): Likewise.
| Ludovic Courtès |
2016-01-01 | system: Allow the root file system to have a UUID....This is a followup to ab64483.
* gnu/system.scm (mapped-device-user): Check whether the title of FS is
'device before calling 'string=?'.
* gnu/system/vm.scm (virtualized-operating-system)[user-file-systems]:
Likewise.
| Ludovic Courtès |
2015-11-21 | gnu: Add qemu-minimal....* gnu/packages/qemu.scm (qemu): Exchange with former QEMU-HEADLESS.
(qemu-headless): Rename to...
(qemu-minimal): ... this. New variable. Pass --target-list.
* gnu/packages/debug.scm (qemu-2.3.0): Inherit from QEMU-MINIMAL.
* gnu/packages/grub.scm (qemu-for-tests): Likewise.
* gnu/system/vm.scm (expression->derivation-in-linux-vm, qemu-image):
Update to name change.
| Ludovic Courtès |
2015-11-03 | system: Rename (gnu system linux) to (gnu system pam)....* gnu/system/linux.scm: Rename to...
* gnu/system/pam.scm: ... this.
* gnu-system.am (GNU_SYSTEM_MODULES): Adjust accordingly.
* gnu.scm, gnu/services/base.scm, gnu/services/desktop.scm,
gnu/services/networking.scm, gnu/services/ssh.scm,
gnu/services/xorg.scm, gnu/system.scm, gnu/system/vm.scm: Likewise.
| Ludovic Courtès |
2015-07-26 | vm: Make the list of partitions to build a parameter....* gnu/build/vm.scm (<partition>): New record type.
(fold2): New procedure.
(initialize-partition-table): Remove #:bootable? and
'partition-size' parameters. Add 'partitions' parameter. Invoke 'parted'
with '--script'.
(initialize-root-partition): Remove.
(initialize-partition, root-partition-initializer): New procedures.
(initialize-hard-disk): Remove #:system-directory, #:disk-image-size,
#:file-system-type, #:file-system-label, #:closures, #:copy-closures?,
#:bootable?, and #:register-closures? parameters. Add #:partitions.
Rewrite to use 'initialize-partition' for each item of PARTITIONS.
* gnu/system/vm.scm (expression->derivation-in-linux-vm): Add (guix records)
to #:modules default value.
(qemu-image): Adjust accordingly.
| Ludovic Courtès |
2015-07-24 | vm: Use the 'umount' procedure instead of util-linux's 'umount' command....* gnu/build/vm.scm (initialize-root-partition, initialize-hard-disk): Use the
'umount' procedure instead of invoking the 'umount' command.
* gnu/system/vm.scm (qemu-image): Remove UTIL-LINUX from INPUTS.
| Ludovic Courtès |
2015-07-17 | system: Add 'kernel-arguments' field....* gnu/system.scm (<operating-system>)[kernel-arguments]: New field.
(operating-system-grub.cfg): Honor it.
(operating-system-parameters-file): Add 'kernel-arguments' to the parameters
file.
* guix/scripts/system.scm (previous-grub-entries)[system->grub-entry]: Read
the 'kernel-arguments' field of the parameters file, when available.
* gnu/system/vm.scm (system-qemu-image/shared-store-script):
Use (operating-system-kernel-arguments os) in '-append'.
* doc/guix.texi (operating-system Reference): Document it.
| Ludovic Courtès |
2015-07-10 | gnu: Include (guix build syscalls) module in initrd/VM derivations....This bug was introduced in commit 85c3127.
Thanks to Christopher Webber for reporting it.
* gnu/syste/linux-initrd.scm (base-initrd): Include (guix build syscalls)
module in derivation.
* gnu/system/vm.scm (expression->derivation-in-linux-vm): Likewise.
| David Thompson |
2015-07-07 | gnu: system: Move <file-system-mapping> into (gnu system file-systems)....* gnu/system/vm.scm (<file-system-mapping>, %store-mapping): Move from here...
* gnu/system/file-systems.scm: ...to here.
* guix/scripts/system.scm: Import (gnu system file-systems).
| David Thompson |
2015-04-05 | system: Take kernel modules from the user-specified kernel....* gnu/system/linux-initrd.scm (base-initrd): Add #:linux option to
specify the linux kernel to use.
* gnu/system/vm.scm (expression->derivation-in-linux-vm): Propagate
#:linux to base-initrd.
* gnu/system.scm (operating-system-initrd-file): Pass #:linux to
'make-initrd'.
Co-authored-by: Ludovic Courtès <ludo@gnu.org>
| Andy Wingo |
2015-01-27 | linux-initrd: Add USB kernel modules to the default initrd....* gnu/system/linux-initrd.scm (base-initrd)[linux-modules]: Add
usb-storage, uas, usbkbd, and usbhid.
* gnu/system/vm.scm (system-disk-image): Remove #:extra-modules argument
to 'base-initrd'.
| Ludovic Courtès |
2014-12-13 | vm: Use QEMU's standard VGA emulation by default....* gnu/system/vm.scm (common-qemu-options): Add "-vga std".
| Ludovic Courtès |
2014-11-28 | linux-boot: Load modules and their dependencies, à la 'modprobe'....* gnu/build/linux-boot.scm: Use (gnu build linux-modules).
(load-linux-module*): Remove.
(boot-system): Add #:linux-module-directory parameter.
[lookup-module]: New procedure.
Call 'current-module-debugging-port'. Pass #:lookup-module to
'load-linux-module*'. Map LOOKUP-MODULE on LINUX-MODULES.
* gnu/system/linux-initrd.scm (base-initrd): Adjust 'boot-system' call
accordingly. Adjust #:modules argument as well.
* gnu/system.scm (operating-system-activation-script)[%modules]: Likewise.
* gnu/system/vm.scm (expression->derivation-in-linux-vm): Likewise.
| Ludovic Courtès |
2014-11-20 | vm: Introduce 'file-system-mapping'....* gnu/system/vm.scm (<file-system-mapping>): New record type.
(%store-mapping): New variable.
(host-9p-file-system): Rename to...
(mapping->file-system): ... this. Replace 'source' and 'target'
parameters with 'mapping'. Set 'flags' field.
(virtualized-operating-system): Add 'mappings' parameter and honor
it.
(system-qemu-image/shared-store-script): Add 'mappings' parameter.
Pass it to 'virtualized-operating-system'. Use it in argument to
'common-qemu-options'.
| Ludovic Courtès |
2014-11-20 | vm: Formalize use of '-virtfs' options....* gnu/system/vm.scm (file-system->mount-tag, host-9p-file-system): New
procedures.
(virtualized-operating-system): Use 'host-9p-file-system' for the
store.
(common-qemu-options): Add 'shared-fs' parameter.
[virtfs-option]: New procedure.
Use it.
(system-qemu-image/shared-store-script): Adjust accordingly.
| Ludovic Courtès |
2014-11-08 | vm: The 'run-vm' scripts now passes its arguments to QEMU....* gnu/system/vm.scm (system-qemu-image/shared-store-script): Add "$@" at
the end of the script.
(common-qemu-options): Remove trailing newline.
* doc/guix.texi (Invoking guix system): Document it.
| Ludovic Courtès |
2014-11-08 | vm: Fix 'vm --full-boot' to produce a sufficient disk image....* gnu/system/vm.scm (system-qemu-image/shared-store): Add
#:disk-image-size and #:full-boot? parameters and honor them. Pass
'#:copy-inputs? full-boot?', and change #:inputs argument.
* guix/scripts/system.scm (system-derivation-for-action): Pass
#:disk-image-size to 'system-qemu-image/shared-store'.
* doc/guix.texi (Invoking guix system): Mention use of '--image-size' in
conjunction with '--full-boot'.
| Ludovic Courtès |
2014-11-08 | vm: Support 'guix system vm --full-boot'....* gnu/system/vm.scm (system-qemu-image/shared-store-script): Add
#:full-boot? parameter and honor it.
* guix/scripts/system.scm (system-derivation-for-action): Likewise.
(perform-action): Likewise.
(show-help): Document '--full-boot'.
(%options): Add '--full-boot'.
(guix-system): Add #:full-boot? argument in call to 'perform-action'.
* doc/guix.texi (Invoking guix system): Document it.
| Ludovic Courtès |
2014-11-06 | vm: Factorize common QEMU options....* gnu/system/vm.scm (common-qemu-options): New procedure.
(system-qemu-image/shared-store-script): Use it.
| Ludovic Courtès |
2014-11-06 | vm: Remove unused procedure....* gnu/system/vm.scm (input->name+output): Remove. Its last user
disappeared in commit b53833b.
| Ludovic Courtès |
2014-11-05 | vm: Disable swap devices in virtualized OSes....* gnu/system/vm.scm (virtualized-operating-system): Add 'swap-devices'
field.
| Ludovic Courtès |
2014-09-22 | linux-initrd: Adjust VM code and doc to new 'base-initrd' signature....This fixes regressions introduced in de1c158 ("system: Add support for
boot-time mapped devices.").
* doc/guix.texi (Initial RAM Disk): Adjust example with custom use of
'base-initrd'. Document #:mapped-devices parameter of 'base-initrd'.
* gnu/system/vm.scm (system-disk-image, system-qemu-image,
virtualized-operating-system): Adjust call to 'base-initrd' to new
signature.
| Ludovic Courtès |
2014-09-18 | linux-initrd: Remove now obsolete #:guile-modules-in-chroot? parameter....* gnu/build/linux-boot.scm (boot-system): Remove
#:guile-modules-in-chroot? and related code.
* gnu/system/linux-initrd.scm (base-initrd): Likewise.
* gnu/system/vm.scm (expression->derivation-in-linux-vm): Remove
#:guile-modules-in-chroot? argument in 'base-initrd' call.
| Ludovic Courtès |
2014-09-08 | linux-initrd: Copy all the script's closure to the initrd....* gnu/system/linux-initrd.scm (expression->initrd): Remove calls to
'imported-modules' and 'compiled-modules'. Use 'gexp->script' with
EXP. Add the result to TO-COPY. Make /init a symlink to that script,
and copy its closure into the "contents" directory. Add fake
/proc/self/exe symlink.
* gnu/build/linux-boot.scm (load-linux-module*): Add comment about mmap.
* gnu/system/vm.scm (system-qemu-image/shared-store-script): Add "-m
256". This turns out to be needed for initrds containing things like
e2fsck and several modules; with the default of 128 MiB, loading
libahci.ko may fail with -1.
| Ludovic Courtès |
2014-09-06 | gexp: Allow use of high-level objects in #:references-graphs....* guix/gexp.scm (lower-reference-graphs): New procedure.
(gexp->derivation)[graphs-file-names]: New procedure.
Use 'lower-reference-graphs', and augment #:inputs argument as a
function of #:references-graphs.
* doc/guix.texi (G-Expressions): Adjust 'gexp->derivation' documentation
accordingly.
* tests/gexp.scm ("gexp->derivation, store copy"): Remove reference to
TWO in BUILD-DRV. Use TWO directly in #:references-graphs argument.
("gexp->derivation #:references-graphs"): New test.
* gnu/system/vm.scm (qemu-image): Remove variable 'graph'; use INPUTS as
the #:references-graphs argument to
'expression->derivation-in-linux-vm'.
| Ludovic Courtès |
2014-09-04 | vm: Move store copy handling to (guix build store-copy)....* gnu/build/vm.scm (read-reference-graph, populate-store): Move to...
* guix/build/store-copy.scm: ... here. New file.
* Makefile.am (MODULES): Add it.
* gnu/system/vm.scm (expression->derivation-in-linux-vm): Adjust default
#:modules values accordingly.
* tests/gexp.scm ("gexp->derivation, store copy"): New test.
| Ludovic Courtès |
2014-09-03 | Move part of (gnu build linux-boot) to (gnu build file-systems)....* gnu/build/linux-boot.scm (%ext2-endianness, %ext2-sblock-magic,
%ext2-sblock-creator-os, %ext2-sblock-uuid, %ext2-sblock-volume-name,
read-ext2-superblock, ext2-superblock-uuid,
ext2-superblock-volume-name, disk-partitions,
partition-label-predicate, find-partition-by-label,
canonicalize-device-spec, MS_RDONLY, MS_NOSUID, MS_NODEV, MS_NOEXEC,
MS_BIND, MS_MOVE, bind-mount, check-file-system,
mount-flags->bit-mask, mount-file-system): Move to...
* gnu/build/file-systems.scm: ... here. New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.
* gnu/services/base.scm: Use (gnu build file-systems).
* gnu/services/dmd.scm (dmd-configuration-file): Likewise.
* gnu/system.scm (operating-system-activation-script): Likewise.
* gnu/system/linux-initrd.scm (base-initrd): Likewise.
* gnu/system/vm.scm (expression->derivation-in-linux-vm): Likewise.
| Ludovic Courtès |
2014-09-03 | Rename (gnu build linux-initrd) to (gnu build linux-boot)....* gnu/build/linux-initrd.scm: Rename to...
* gnu/build/linux-boot.scm: ... this.
* gnu-system.am (GNU_SYSTEM_MODULES): Adjust accordingly.
* gnu/build/activation.scm, gnu/build/vm.scm, gnu/services/base.scm,
gnu/services/dmd.scm, gnu/system.scm, gnu/system/linux-initrd.scm,
gnu/system/vm.scm: Adjust accordingly.
| Ludovic Courtès |
2014-09-03 | Move operating system helpers from (guix build …) to (gnu build …)....* guix/build/activation.scm, guix/build/install.scm,
guix/build/linux-initrd.scm, guix/build/vm.scm: Move to...
* gnu/build: ... here.
* Makefile.am (MODULES): Remove the above guix/build/ files.
* gnu-system.am (GNU_SYSTEM_MODULES): Add the above gnu/build/ files
here.
* gnu/services/base.scm, gnu/services/dmd.scm, gnu/system.scm,
gnu/system/linux-initrd.scm, gnu/system/vm.scm,
guix/scripts/system.scm: Adjust to the new module names.
| Ludovic Courtès |
2014-08-28 | gnu: Split (gnu packages base), adding (gnu packages commencement)....* gnu/packages/base.scm (gnu-make-boot0, diffutils-boot0,
findutils-boot0, %boot0-inputs, nix-system->gnu-triplet, boot-triplet,
binutils-boot0, gcc-boot0, perl-boot0, linux-libre-headers-boot0,
texinfo-boot0, %boot1-inputs, glibc-final-with-bootstrap-bash,
cross-gcc-wrapper, static-bash-for-glibc, glibc-final,
gcc-boot0-wrapped, %boot2-inputs, binutils-final, libstdc++,
gcc-final, ld-wrapper-boot3, %boot3-inputs, bash-final, %boot4-inputs,
guile-final, gnu-make-final, ld-wrapper, coreutils-final, grep-final,
%boot5-inputs, %final-inputs, canonical-package, gcc-toolchain,
gcc-toolchain-4.8, gcc-toolchain-4.9): Move to...
* gnu/packages/commencement.scm: ... here. New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.
* build-aux/check-final-inputs-self-contained.scm: Adjust accordingly.
* gnu/packages/cross-base.scm: Likewise.
* gnu/packages/make-bootstrap.scm: Likewise.
* guix/build-system/cmake.scm (cmake-build): Likewise.
* guix/build-system/gnu.scm (standard-packages, gnu-build,
gnu-cross-build): Likewise.
* guix/build-system/perl.scm (perl-build): Likewise.
* guix/build-system/python.scm (python-build): Likewise.
* guix/build-system/trivial.scm (guile-for-build): Likewise.
* guix/download.scm (url-fetch): Likewise.
* guix/gexp.scm (default-guile): Likewise.
* guix/git-download.scm (git-fetch): Likewise.
* guix/monads.scm (run-with-store): Likewise.
* guix/packages.scm (default-guile): Likewise.
* guix/scripts/package.scm (guix-package): Likewise.
* guix/scripts/refresh.scm: Likewise.
* guix/svn-download.scm (svn-fetch): Likewise.
* tests/builders.scm (%bootstrap-inputs, %bootstrap-search-paths):
Likewise.
* tests/packages.scm ("GNU Make, bootstrap"): Likewise.
* tests/guix-package.sh: Likewise.
* gnu/services/base.scm: Use 'canonical-package' instead of xxx-final.
* gnu/services/xorg.scm: Likewise.
* gnu/system/vm.scm: Likewise.
* guix/scripts/pull.scm (guix-pull): Likewise.
| Ludovic Courtès |
2014-07-14 | vm: Make sure disk image initrds load 'usb-storage.ko'....Reported by David Thompson <dthompson2@worcester.edu>.
* gnu/system/vm.scm (system-disk-image): Add usb-storage.ko to the
initrd.
| Ludovic Courtès |
2014-07-13 | vm: Add support for i686....Partially fixes <http://bugs.gnu.org/18002>.
Reported by David Thompson <dthompson2@worcester.edu>.
* guix/build/vm.scm (qemu-command): Add optional 'system' parameter.
Special-case "^i[3456]86$".
* gnu/system/vm.scm (system-qemu-image/shared-store-script): Use it.
| Ludovic Courtès |
2014-07-04 | vm: Enable QEMU support in the freestanding VM image....* gnu/system/vm.scm (system-qemu-image): Add 'initrd' field.
| Ludovic Courtès |
2014-07-01 | linux-initrd: Rename 'qemu-initrd' to 'base-initrd'....* gnu/system/linux-initrd.scm (qemu-initrd): Rename to...
(base-initrd): ... this.
* gnu/system.scm (<operating-system>)[initrd]: Update accordingly.
* gnu/system/vm.scm (expression->derivation-in-linux-vm,
system-disk-image, virtualized-operating-system): Likewise.
| Ludovic Courtès |
2014-07-01 | linux-initrd: Disable QEMU networking by default....* gnu/system/linux-initrd.scm (qemu-initrd): Remove default value for
#:qemu-networking?.
* gnu/system/vm.scm (expression->derivation-in-linux-vm): Pass
#:qemu-networking? #t.
(system-disk-image): Remove #:qemu-networking? #f.
(virtualized-operating-system): Pass #:qemu-networking? #t.
| Ludovic Courtès |
2014-07-01 | linux-initrd: Make the virtio kernel modules optional....* gnu/system/linux-initrd.scm (qemu-initrd): Add #:virtio? parameter.
Use it.
* gnu/system/vm.scm (expression->derivation-in-linux-vm): Pass
'qemu-initrd' #:virtio?.
(virtualized-operating-system): Likewise.
| Ludovic Courtès |
2014-06-27 | system: Install /var/guix/profiles/system-1-link on new systems....* guix/build/install.scm (directives): Add /var/guix/profiles/system.
(populate-root-file-system): Add 'system' parameter. Create
/var/guix/profiles/system-1-link.
* guix/scripts/system.scm (install): Pass OS-DIR to
'populate-root-file-system'.
* guix/build/vm.scm (initialize-root-partition): Add #:system-directory
parameter, and pass it to 'populate-root-file-system'.
(initialize-hard-disk): Add #:system-directory parameter, and pass it
to 'initialize-root-partition'.
* gnu/system/vm.scm (qemu-image): Add #:os-derivation parameter and pass
it to 'initialize-hard-disk'.
(system-disk-image, system-qemu-image,
system-qemu-image/shared-store): Pass #:os-derivation to 'qemu-image.
| Ludovic Courtès |
2014-06-04 | vm: Add #:name parameter for 'system-disk-image'....* gnu/system/vm.scm (system-disk-image): Add #:name parameter; pass it
to 'qemu-image'.
| Ludovic Courtès |
2014-06-03 | gnu: Merge Parted, fdisk, and ddrescue in (gnu packages disk)....* gnu/packages/parted.scm: Rename to...
* gnu/packages/disk.scm: ... this. New file. Merge with...
* gnu/packages/fdisk.scm: ... this; remove file;
* gnu/packages/ddrescue.scm: ... and this; remove file.
* gnu/system/install.scm, gnu/system/vm.scm: Adjust accordingly.
* gnu-system.am (GNU_SYSTEM_MODULES): Remove
gnu/packages/{parted,fdisk,ddrescue}.scm and add
gnu/packages/disk.scm.
| Ludovic Courtès |
2014-06-03 | system: File system sources can be marked as labels or devices....* gnu/system/file-systems.scm (<file-system>)[title]: New field.
* gnu/services/base.scm (file-system-service): Add #:title parameter.
In 'start' gexp, use 'canonicalize-device-spec' and honor TITLE.
* gnu/system.scm (other-file-system-services,
operating-system-root-file-system, operating-system-initrd-file):
Adjust accordingly.
* gnu/system/linux-initrd.scm (file-system->spec): Likewise.
* gnu/system/vm.scm (system-disk-image): Add 'title' field for the root
file system.
* guix/build/linux-initrd.scm (mount-file-system): Expect the second
element of SPEC to be the title.
(boot-system)[root-mount-point?, root-fs-type]: Likewise.
* gnu/services/dmd.scm (dmd-configuration-file): Select
'canonicalize-device-spec'.
| Ludovic Courtès |
2014-05-30 | vm: disk-image: Specify the root file system using a label....* gnu/system/vm.scm (system-disk-image)[root-label]: New variable.
Use it for the root file system, and pass it as #:file-system-label to
'qemu-image'.
| Ludovic Courtès |
2014-05-29 | vm: Allow a volume name to be specified for the root partition....* 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'.
| Ludovic Courtès |
2014-05-23 | vm: Disable QEMU networking in the disk image initrd....* gnu/system/linux-initrd.scm (qemu-initrd): Add #:qemu-networking?
parameter and honor it.
* gnu/system/vm.scm (system-disk-image): Pass #:qemu-networking #f.
| Ludovic Courtès |
2014-05-22 | vm: Add 'system-disk-image'....* gnu/system/vm.scm (system-disk-image): New procedure.
| Ludovic Courtès |
2014-05-22 | vm: Use a para-virtualized disk when creating an image....* guix/build/vm.scm (load-in-linux-vm): When MAKE-DISK-IMAGE?, use
'-drive ...,if=virtio' for better performance.
* gnu/system/vm.scm (qemu-image): Use /dev/vda instead of /dev/sda.
| Ludovic Courtès |
2014-05-22 | vm: Make the image format a parameter....* guix/build/vm.scm (load-in-linux-vm): Add #:disk-image-format
parameter; add 'image-file' variable. Honor DISK-IMAGE-FORMAT.
* gnu/system/vm.scm (expression->derivation-in-linux-vm): Add
#:disk-image-format parameter, and honor it.
(qemu-image): Likewise.
| Ludovic Courtès |