s6-svstat "want up"

From: Buck Evan <buck_at_yelp.com>
Date: Tue, 8 Sep 2015 13:36:32 -0700

Below is a silly toy service that I've used to prove out some of the s6
behavior.

$ cat date/run
#!/bin/bash
exec date > now.date

$ s6-supervise date &
[5] 3916351

$ cat date/now.date
Tue Sep 8 13:32:21 PDT 2015
$ s6-svstat date/
down (exitcode 0) 0 seconds, normally up, want up, ready 0 seconds

$ cat date/now.date
Tue Sep 8 13:32:23 PDT 2015
$ s6-svstat date/
down (exitcode 0) 0 seconds, normally up, want up, ready 0 seconds

$ cat date/now.date
Tue Sep 8 13:32:24 PDT 2015
$ s6-svstat date/
down (exitcode 0) 0 seconds, normally up, want up, ready 0 seconds

That's all fine and sensical.

$ s6-svc -dx date/
[5] Done s6-supervise date
$ s6-svc -dx date/
s6-svc: fatal: unable to control date/: supervisor not listening

$ s6-svstat date/
down (exitcode 0) 6 seconds, normally up, want up, ready 6 seconds
$ cat date/now.date
Tue Sep 8 13:33:07 PDT 2015

$ s6-svstat date/
down (exitcode 0) 10 seconds, normally up, want up, ready 10 seconds
$ cat date/now.date
Tue Sep 8 13:33:07 PDT 2015

The "want up" here seems patently false.
The last command sent was "-dx", which tells the thing to go down.
The "normally up" is fine, since there's no `down` file.

Is this a bug or a feature?
Received on Tue Sep 08 2015 - 20:36:32 UTC