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kexec: create toplevel kexec directory for unpacking

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This commit is contained in:
Jörg Thalheim 2022-09-05 05:35:19 +00:00
parent 40df39634b
commit b630b3fb37
2 changed files with 10 additions and 12 deletions
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6
nix/kexec-installer-test.nix
View file

@ -55,10 +55,8 @@ in makeTest' {
# Kexec node1 to the toplevel of node2 via the kexec-boot script
node1.succeed('touch /run/foo')
node1.fail('hello')
node1.succeed('mkdir -p /root/kexec')
node1.succeed('mkdir -p /root/kexec')
node1.succeed('tar -xf ${nodes.node2.config.system.build.kexecTarball}/tarball/nixos-kexec-installer-${pkgs.system}.tar.xz -C /root/kexec')
node1.execute('/root/kexec/kexec-boot')
node1.succeed('tar -xf ${nodes.node2.config.system.build.kexecTarball}/tarball/nixos-kexec-installer-${pkgs.system}.tar.xz -C /root')
node1.execute('/root/kexec/run')
# wait for machine to kexec
node1.execute('sleep 9999', check_return=False)
node1.succeed('! test -e /run/foo')

16
nix/kexec-installer.nix
View file

@ -9,7 +9,7 @@
# This is a variant of the upstream kexecScript that also allows embedding
# a ssh key.
system.build.kexecBoot = lib.mkForce (pkgs.writeScript "kexec-boot" ''
system.build.kexecRun = lib.mkForce (pkgs.writeScript "kexec-run" ''
#!/usr/bin/env bash
set -ex
shopt -s nullglob
@ -17,7 +17,7 @@
INITRD_TMP=$(mktemp -d)
cd "$INITRD_TMP"
pwd
mkdir initrd initrd/ssh
mkdir -p initrd/ssh
pushd initrd
if [ -e /root/.ssh/authorized_keys ]; then
cat /root/.ssh/authorized_keys >> ssh/authorized_keys
@ -28,7 +28,7 @@
for p in /etc/ssh/ssh_host_*; do
cp -a "$p" ssh
done
find -type f | cpio -o -H newc | gzip -9 > ../extra.gz
find | cpio -o -H newc | gzip -9 > ../extra.gz
popd
cat "''${SCRIPT_DIR}/initrd.gz" extra.gz > final.gz
@ -55,19 +55,19 @@
fileName = "nixos-kexec-installer-${pkgs.stdenv.hostPlatform.system}";
contents = [
{
target = "/initrd.gz";
target = "/kexec/initrd.gz";
source = "${config.system.build.netbootRamdisk}/initrd";
}
{
target = "/bzImage";
target = "/kexec/bzImage";
source = "${config.system.build.kernel}/${config.system.boot.loader.kernelFile}";
}
{
target = "/kexec-boot";
source = config.system.build.kexecBoot;
target = "/kexec/run";
source = config.system.build.kexecRun;
}
{
target = "/kexec";
target = "/kexec/kexec";
source = "${pkgs.pkgsStatic.kexec-tools}/bin/kexec";
}
];