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nixpkgs/nixos/tests/nfs.nix

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import ./make-test.nix ({ version ? 4, ... }:
let
client =
{ config, pkgs, ... }:
{ fileSystems = pkgs.lib.mkVMOverride
[ { mountPoint = "/data";
device = "server:${if version == 4 then "/" else "/data"}";
fsType = "nfs";
options = "vers=${toString version}";
}
];
networking.firewall.enable = false; # FIXME: only open statd
};
in
{
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name = "nfs";
nodes =
{ client1 = client;
client2 = client;
server =
{ config, pkgs, ... }:
{ services.nfs.server.enable = true;
services.nfs.server.exports =
''
/data 192.168.1.0/255.255.255.0(rw,no_root_squash,no_subtree_check,fsid=0)
'';
services.nfs.server.createMountPoints = true;
networking.firewall.enable = false; # FIXME: figure out what ports need to be allowed
};
};
testScript =
''
$server->waitForUnit("nfsd");
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$server->succeed("systemctl start network-online.target");
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$server->waitForUnit("network-online.target");
startAll;
$client1->waitForUnit("data.mount");
$client1->succeed("echo bla > /data/foo");
$server->succeed("test -e /data/foo");
$client2->waitForUnit("data.mount");
$client2->succeed("echo bla > /data/bar");
$server->succeed("test -e /data/bar");
# Test whether restarting nfsd works correctly.
$server->succeed("systemctl restart nfsd");
$client2->succeed("echo bla >> /data/bar"); # will take 90 seconds due to the NFS grace period
# Test whether we can get a lock.
$client2->succeed("time flock -n -s /data/lock true");
# Test locking: client 1 acquires an exclusive lock, so client 2
# should then fail to acquire a shared lock.
$client1->succeed("flock -x /data/lock -c 'touch locked; sleep 100000' &");
$client1->waitForFile("locked");
$client2->fail("flock -n -s /data/lock true");
# Test whether client 2 obtains the lock if we reset client 1.
$client2->succeed("flock -x /data/lock -c 'echo acquired; touch locked; sleep 100000' >&2 &");
$client1->crash;
$client1->start;
$client2->waitForFile("locked");
# Test whether locks survive a reboot of the server.
$client1->waitForUnit("data.mount");
$server->shutdown;
$server->start;
$client1->succeed("touch /data/xyzzy");
$client1->fail("time flock -n -s /data/lock true");
# Test whether unmounting during shutdown happens quickly.
my $t1 = time;
$client1->shutdown;
my $duration = time - $t1;
die "shutdown took too long ($duration seconds)" if $duration > 30;
'';
})