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Merge pull request #102174 from grahamc/ami-root-use-gpt

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AMI root partition table: use GPT to support >2T partitions
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Graham Christensen 2020-10-30 16:14:37 -04:00 committed by GitHub
commit 38a394bdee
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2 changed files with 16 additions and 2 deletions
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16
nixos/lib/make-disk-image.nix
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@ -28,6 +28,9 @@
# partition of reasonable size is created in addition to the root partition.
# For "legacy", the msdos partition table is used and a single large root
# partition is created.
# For "legacy+gpt", the GPT partition table is used, a 1MiB no-fs partition for
# use by the bootloader is created, and a single large root partition is
# created.
# For "hybrid", the GPT partition table is used and a mandatory ESP
# partition of reasonable size is created in addition to the root partition.
# Also a legacy MBR will be present.
@ -54,7 +57,7 @@
format ? "raw"
}:
assert partitionTableType == "legacy" || partitionTableType == "efi" || partitionTableType == "hybrid" || partitionTableType == "none";
assert partitionTableType == "legacy" || partitionTableType == "legacy+gpt" || partitionTableType == "efi" || partitionTableType == "hybrid" || partitionTableType == "none";
# We use -E offset=X below, which is only supported by e2fsprogs
assert partitionTableType != "none" -> fsType == "ext4";
@ -75,6 +78,7 @@ let format' = format; in let
rootPartition = { # switch-case
legacy = "1";
"legacy+gpt" = "2";
efi = "2";
hybrid = "3";
}.${partitionTableType};
@ -85,6 +89,16 @@ let format' = format; in let
mklabel msdos \
mkpart primary ext4 1MiB -1
'';
"legacy+gpt" = ''
parted --script $diskImage -- \
mklabel gpt \
mkpart no-fs 1MB 2MB \
set 1 bios_grub on \
align-check optimal 1 \
mkpart primary ext4 2MB -1 \
align-check optimal 2 \
print
'';
efi = ''
parted --script $diskImage -- \
mklabel gpt \

2
nixos/maintainers/scripts/ec2/amazon-image.nix
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@ -57,7 +57,7 @@ in {
inherit (cfg) contents format name;
pkgs = import ../../../.. { inherit (pkgs) system; }; # ensure we use the regular qemu-kvm package
partitionTableType = if config.ec2.efi then "efi"
else if config.ec2.hvm then "legacy"
else if config.ec2.hvm then "legacy+gpt"
else "none";
diskSize = cfg.sizeMB;
fsType = "ext4";