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improve: modules/virtualisation/qemu-vm.nix

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disk image for qemu VM with bootloader:
* remove redundant command
* improve readability
* improve execution speed
* make output more reproducible
This commit is contained in:
Thomas Strobel 2017-03-04 11:26:11 +01:00
parent fe0ef55384
commit b9a7aacef7
1 changed files with 11 additions and 9 deletions
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20
nixos/modules/virtualisation/qemu-vm.nix
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@ -136,15 +136,17 @@ let
else "-nographic -serial pty";
}
''
# Create a /boot EFI partition with 40M
${pkgs.gptfdisk}/bin/sgdisk -G /dev/vda
${pkgs.gptfdisk}/bin/sgdisk -a 1 -n 1:34:2047 -c 1:BIOSBootPartition -t 1:ef02 /dev/vda
${pkgs.gptfdisk}/bin/sgdisk -a 512 -N 2 -c 2:EFISystem -t 2:ef00 /dev/vda
${pkgs.gptfdisk}/bin/sgdisk -A 1:set:1 /dev/vda
${pkgs.gptfdisk}/bin/sgdisk -A 2:set:2 /dev/vda
${pkgs.gptfdisk}/bin/sgdisk -h 2 /dev/vda
${pkgs.gptfdisk}/bin/sgdisk -C /dev/vda
${pkgs.gptfdisk}/bin/sgdisk -A 2:set:2 /dev/vda
# Create a /boot EFI partition with 40M and arbitrary but fixed GUIDs for reproducibility
${pkgs.gptfdisk}/bin/sgdisk \
--set-alignment=1 --new=1:34:2047 --change-name=1:BIOSBootPartition --typecode=1:ef02 \
--set-alignment=512 --largest-new=2 --change-name=2:EFISystem --typecode=2:ef00 \
--attributes=1:set:1 \
--attributes=2:set:2 \
--disk-guid=97FD5997-D90B-4AA3-8D16-C1723AEA73C1 \
--partition-guid=1:1C06F03B-704E-4657-B9CD-681A087A2FDC \
--partition-guid=2:970C694F-AFD0-4B99-B750-CDB7A329AB6F \
--hybrid 2 \
--recompute-chs /dev/vda
. /sys/class/block/vda2/uevent
mknod /dev/vda2 b $MAJOR $MINOR
. /sys/class/block/vda/uevent