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nixos hibernate test: Use waitForOpenPort

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There was one confusing recent failure of this:

http://cache.nixos.org/log/myla8bc17j8spmifdxmrz9jswxwsf5w6-vm-test-run-hibernate.drv

I don't have any real ideas on what could cause the problem but there is
at least one theoretical one: the system starts hibernating before the
listener process manages to open the TCP port for listening, and it can't
open it after resuming because not enough pages from the netcat binary
have been paged in (and as the 9p filesystem holding it is now toast,
they can't be loaded anymore).
This commit is contained in:
Tuomas Tynkkynen 2017-04-02 02:21:59 +03:00
parent 40d171855f
commit affce1e246
1 changed files with 2 additions and 1 deletions
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3
nixos/tests/hibernate.nix
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@ -13,7 +13,7 @@ import ./make-test.nix (pkgs: {
networking.firewall.allowedTCPPorts = [ 4444 ];
systemd.services.listener.serviceConfig.ExecStart = "${pkgs.netcat}/bin/nc -l 4444";
systemd.services.listener.serviceConfig.ExecStart = "${pkgs.netcat}/bin/nc -l 4444 -k";
};
probe = { config, lib, pkgs, ...}: {
@ -32,6 +32,7 @@ import ./make-test.nix (pkgs: {
$machine->succeed("mkswap /dev/vdb");
$machine->succeed("swapon -a");
$machine->startJob("listener");
$machine->waitForOpenPort(4444);
$machine->succeed("systemctl hibernate &");
$machine->waitForShutdown;
$machine->start;