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nixpkgs/nixos/tests/zfs.nix
2022-04-07 13:06:57 -04:00

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Nix

{ system ? builtins.currentSystem,
config ? {},
pkgs ? import ../.. { inherit system config; }
}:
with import ../lib/testing-python.nix { inherit system pkgs; };
let
makeZfsTest = name:
{ kernelPackage ? if enableUnstable then pkgs.linuxPackages_latest else pkgs.linuxPackages
, enableUnstable ? false
, extraTest ? ""
}:
makeTest {
name = "zfs-" + name;
meta = with pkgs.lib.maintainers; {
maintainers = [ adisbladis ];
};
nodes.machine = { pkgs, lib, ... }:
let
usersharePath = "/var/lib/samba/usershares";
in {
virtualisation.emptyDiskImages = [ 4096 ];
networking.hostId = "deadbeef";
boot.kernelPackages = kernelPackage;
boot.supportedFilesystems = [ "zfs" ];
boot.zfs.enableUnstable = enableUnstable;
services.samba = {
enable = true;
extraConfig = ''
registry shares = yes
usershare path = ${usersharePath}
usershare allow guests = yes
usershare max shares = 100
usershare owner only = no
'';
};
systemd.services.samba-smbd.serviceConfig.ExecStartPre =
"${pkgs.coreutils}/bin/mkdir -m +t -p ${usersharePath}";
environment.systemPackages = [ pkgs.parted ];
# Setup regular fileSystems machinery to ensure forceImportAll can be
# tested via the regular service units.
virtualisation.fileSystems = {
"/forcepool" = {
device = "forcepool";
fsType = "zfs";
options = [ "noauto" ];
};
};
# forcepool doesn't exist at first boot, and we need to manually test
# the import after tweaking the hostId.
systemd.services.zfs-import-forcepool.wantedBy = lib.mkVMOverride [];
systemd.targets.zfs.wantedBy = lib.mkVMOverride [];
boot.zfs.forceImportAll = true;
# /dev/disk/by-id doesn't get populated in the NixOS test framework
boot.zfs.devNodes = "/dev/disk/by-uuid";
};
testScript = ''
machine.succeed(
"modprobe zfs",
"zpool status",
"ls /dev",
"mkdir /tmp/mnt",
"udevadm settle",
"parted --script /dev/vdb mklabel msdos",
"parted --script /dev/vdb -- mkpart primary 1024M -1s",
"udevadm settle",
"zpool create rpool /dev/vdb1",
"zfs create -o mountpoint=legacy rpool/root",
# shared datasets cannot have legacy mountpoint
"zfs create rpool/shared_smb",
"mount -t zfs rpool/root /tmp/mnt",
"udevadm settle",
# wait for samba services
"systemctl is-system-running --wait",
"zfs set sharesmb=on rpool/shared_smb",
"zfs share rpool/shared_smb",
"smbclient -gNL localhost | grep rpool_shared_smb",
"umount /tmp/mnt",
"zpool destroy rpool",
"udevadm settle",
)
machine.succeed(
'echo password | zpool create -o altroot="/tmp/mnt" '
+ "-O encryption=aes-256-gcm -O keyformat=passphrase rpool /dev/vdb1",
"zfs create -o mountpoint=legacy rpool/root",
"mount -t zfs rpool/root /tmp/mnt",
"udevadm settle",
"umount /tmp/mnt",
"zpool destroy rpool",
"udevadm settle",
)
with subtest("boot.zfs.forceImportAll works"):
machine.succeed(
"rm /etc/hostid",
"zgenhostid deadcafe",
"zpool create forcepool /dev/vdb1 -O mountpoint=legacy",
)
machine.shutdown()
machine.start()
machine.succeed("udevadm settle")
machine.fail("zpool import forcepool")
machine.succeed(
"systemctl start zfs-import-forcepool.service",
"mount -t zfs forcepool /tmp/mnt",
)
'' + extraTest;
};
in {
stable = makeZfsTest "stable" { };
unstable = makeZfsTest "unstable" {
enableUnstable = true;
};
installer = (import ./installer.nix { }).zfsroot;
expand-partitions = makeTest {
name = "multi-disk-zfs";
nodes = {
machine = { pkgs, ... }: {
environment.systemPackages = [ pkgs.parted ];
boot.supportedFilesystems = [ "zfs" ];
networking.hostId = "00000000";
virtualisation = {
emptyDiskImages = [ 20480 20480 20480 20480 20480 20480 ];
};
specialisation.resize.configuration = {
services.zfs.expandOnBoot = [ "tank" ];
};
};
};
testScript = { nodes, ... }:
''
start_all()
machine.wait_for_unit("default.target")
print(machine.succeed('mount'))
print(machine.succeed('parted --script /dev/vdb -- mklabel gpt'))
print(machine.succeed('parted --script /dev/vdb -- mkpart primary 1M 70M'))
print(machine.succeed('parted --script /dev/vdc -- mklabel gpt'))
print(machine.succeed('parted --script /dev/vdc -- mkpart primary 1M 70M'))
print(machine.succeed('zpool create tank mirror /dev/vdb1 /dev/vdc1 mirror /dev/vdd /dev/vde mirror /dev/vdf /dev/vdg'))
print(machine.succeed('zpool list -v'))
print(machine.succeed('mount'))
start_size = int(machine.succeed('df -k --output=size /tank | tail -n1').strip())
print(machine.succeed("/run/current-system/specialisation/resize/bin/switch-to-configuration test >&2"))
machine.wait_for_unit("zpool-expand-pools.service")
machine.wait_for_unit("zpool-expand@tank.service")
print(machine.succeed('zpool list -v'))
new_size = int(machine.succeed('df -k --output=size /tank | tail -n1').strip())
if (new_size - start_size) > 20000000:
print("Disk grew appropriately.")
else:
print(f"Disk went from {start_size} to {new_size}, which doesn't seem right.")
exit(1)
'';
};
}