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EC2: allow building S3-backed HVM ami's

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This commit is contained in:
Rob Vermaas 2014-06-19 10:56:52 +02:00
parent 5591fb606c
commit e007559e95
1 changed files with 24 additions and 7 deletions
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21
nixos/modules/virtualisation/amazon-image.nix
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@ -34,16 +34,32 @@ in
[ "closure" config.system.build.toplevel ];
}
''
${if cfg.hvm then ''
# Create a single / partition.
${pkgs.parted}/sbin/parted /dev/vda mklabel msdos
${pkgs.parted}/sbin/parted /dev/vda -- mkpart primary ext2 1M -1s
. /sys/class/block/vda1/uevent
mknod /dev/vda1 b $MAJOR $MINOR
# Create an empty filesystem and mount it.
${pkgs.e2fsprogs}/sbin/mkfs.ext4 -L nixos /dev/vda1
${pkgs.e2fsprogs}/sbin/tune2fs -c 0 -i 0 /dev/vda1
mkdir /mnt
mount /dev/vda1 /mnt
'' else ''
# Create an empty filesystem and mount it.
${pkgs.e2fsprogs}/sbin/mkfs.ext4 -L nixos /dev/vda
${pkgs.e2fsprogs}/sbin/tune2fs -c 0 -i 0 /dev/vda
mkdir /mnt
mount /dev/vda /mnt
''}
# The initrd expects these directories to exist.
mkdir /mnt/dev /mnt/proc /mnt/sys
mount -o bind /proc /mnt/proc
mount -o bind /dev /mnt/dev
mount -o bind /sys /mnt/sys
# Copy all paths in the closure to the filesystem.
storePaths=$(perl ${pkgs.pathsFromGraph} /tmp/xchg/closure)
@ -73,9 +89,10 @@ in
cp ${./amazon-config.nix} /mnt/etc/nixos/configuration.nix
# Generate the GRUB menu.
ln -s vda /dev/xvda
chroot /mnt ${config.system.build.toplevel}/bin/switch-to-configuration boot
umount /mnt/proc
umount /mnt/proc /mnt/dev /mnt/sys
umount /mnt
''
);
@ -86,7 +103,7 @@ in
boot.kernelModules = [ "xen-netfront" ];
# Generate a GRUB menu. Amazon's pv-grub uses this to boot our kernel/initrd.
boot.loader.grub.version = 1;
boot.loader.grub.version = if cfg.hvm then 2 else 1;
boot.loader.grub.device = if cfg.hvm then "/dev/xvda" else "nodev";
boot.loader.grub.timeout = 0;
boot.loader.grub.extraPerEntryConfig = "root (hd0${lib.optionalString cfg.hvm ",0"})";