![Eelco Dolstra](/assets/img/avatar_default.png)
Otherwise clients get a "Stale NFS handle" error after the server reboots. Not clear why this is the case, since the fsid shouldn't change across reboots...
84 lines
2.3 KiB
Nix
84 lines
2.3 KiB
Nix
{ pkgs, ... }:
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let
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client =
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{ config, pkgs, ... }:
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{ fileSystems = pkgs.lib.mkOverride 50
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[ { mountPoint = "/data";
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device = "server:/data";
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fsType = "nfs";
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options = "vers=3";
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}
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];
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};
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in
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{
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nodes =
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{ client1 = client;
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client2 = client;
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server =
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{ config, pkgs, ... }:
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{ services.nfs.server.enable = true;
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services.nfs.server.exports =
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''
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/data 192.168.1.0/255.255.255.0(rw,no_root_squash,no_subtree_check,fsid=0)
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'';
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services.nfs.server.createMountPoints = true;
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};
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};
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testScript =
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''
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$server->waitForUnit("nfsd");
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$server->waitForUnit("network.target");
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startAll;
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$client1->waitForUnit("data.mount");
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$client1->succeed("echo bla > /data/foo");
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$server->succeed("test -e /data/foo");
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$client2->waitForUnit("data.mount");
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$client2->succeed("echo bla > /data/bar");
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$server->succeed("test -e /data/bar");
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# Test whether restarting ‘nfsd’ works correctly.
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$server->succeed("systemctl restart nfsd");
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$client2->succeed("echo bla >> /data/bar"); # will take 90 seconds due to the NFS grace period
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# Test whether we can get a lock.
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$client2->succeed("time flock -n -s /data/lock true");
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# Test locking: client 1 acquires an exclusive lock, so client 2
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# should then fail to acquire a shared lock.
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$client1->succeed("flock -x /data/lock -c 'touch locked; sleep 100000' &");
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$client1->waitForFile("locked");
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$client2->fail("flock -n -s /data/lock true");
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# Test whether client 2 obtains the lock if we reset client 1.
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$client2->succeed("flock -x /data/lock -c 'echo acquired; touch locked; sleep 100000' >&2 &");
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$client1->crash;
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$client1->start;
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$client2->waitForFile("locked");
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# Test whether locks survive a reboot of the server.
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$client1->waitForUnit("data.mount");
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$server->shutdown;
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$server->start;
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$client1->succeed("touch /data/xyzzy");
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$client1->fail("time flock -n -s /data/lock true");
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# Test whether unmounting during shutdown happens quickly.
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my $t1 = time;
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$client1->shutdown;
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my $duration = time - $t1;
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die "shutdown took too long ($duration seconds)" if $duration > 30;
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'';
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}
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