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1import ../make-test-python.nix (
2 {
3 pkgs,
4 version ? 4,
5 ...
6 }:
7
8 let
9
10 client =
11 { pkgs, ... }:
12 {
13 virtualisation.fileSystems = {
14 "/data" = {
15 # nfs4 exports the export with fsid=0 as a virtual root directory
16 device = if (version == 4) then "server:/" else "server:/data";
17 fsType = "nfs";
18 options = [ "vers=${toString version}" ];
19 };
20 };
21 networking.firewall.enable = false; # FIXME: only open statd
22 };
23
24 in
25
26 {
27 name = "nfs";
28 meta = with pkgs.lib.maintainers; {
29 maintainers = [ ];
30 };
31
32 nodes = {
33 client1 = client;
34 client2 = client;
35
36 server =
37 { ... }:
38 {
39 services.nfs.server.enable = true;
40 services.nfs.server.exports = ''
41 /data 192.168.1.0/255.255.255.0(rw,no_root_squash,no_subtree_check,fsid=0)
42 '';
43 services.nfs.server.createMountPoints = true;
44 networking.firewall.enable = false; # FIXME: figure out what ports need to be allowed
45 };
46 };
47
48 testScript = ''
49 import time
50
51 server.wait_for_unit("nfs-server")
52 server.succeed("systemctl start network-online.target")
53 server.wait_for_unit("network-online.target")
54
55 start_all()
56
57 client1.wait_for_unit("data.mount")
58 client1.succeed("echo bla > /data/foo")
59 server.succeed("test -e /data/foo")
60
61 client2.wait_for_unit("data.mount")
62 client2.succeed("echo bla > /data/bar")
63 server.succeed("test -e /data/bar")
64
65 with subtest("restarting 'nfs-server' works correctly"):
66 server.succeed("systemctl restart nfs-server")
67 # will take 90 seconds due to the NFS grace period
68 client2.succeed("echo bla >> /data/bar")
69
70 with subtest("can get a lock"):
71 client2.succeed("time flock -n -s /data/lock true")
72
73 with subtest("client 2 fails to acquire lock held by client 1"):
74 client1.succeed("flock -x /data/lock -c 'touch locked; sleep 100000' >&2 &")
75 client1.wait_for_file("locked")
76 client2.fail("flock -n -s /data/lock true")
77
78 with subtest("client 2 obtains lock after resetting client 1"):
79 client2.succeed(
80 "flock -x /data/lock -c 'echo acquired; touch locked; sleep 100000' >&2 &"
81 )
82 client1.crash()
83 client1.start()
84 client2.wait_for_file("locked")
85
86 with subtest("locks survive server reboot"):
87 client1.wait_for_unit("data.mount")
88 server.shutdown()
89 server.start()
90 client1.succeed("touch /data/xyzzy")
91 client1.fail("time flock -n -s /data/lock true")
92
93 with subtest("unmounting during shutdown happens quickly"):
94 t1 = time.monotonic()
95 client1.shutdown()
96 duration = time.monotonic() - t1
97 # FIXME: regressed in kernel 6.1.28, temporarily disabled while investigating
98 # assert duration < 30, f"shutdown took too long ({duration} seconds)"
99 '';
100 }
101)