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From: Nathan Dehnel <ncdehnel@gmail.com>
To: "Ludovic Courtès" <ludo@gnu.org>
Cc: 53225@debbugs.gnu.org
Subject: bug#53225: shepherd freezes if wireguard is started with dns config enabled
Date: Wed, 8 Jun 2022 18:23:31 -0500	[thread overview]
Message-ID: <CAEEhgEua1cgU0m7VBYOsePrVc6kSXaGt7AGj8VKvO1P57kK2mw@mail.gmail.com> (raw)
In-Reply-To: <87o7zbp4lr.fsf@gnu.org>

>Could you be more specific?  Specifically, could you share
>/var/log/messages for the parts related to Wireguard?

root@guixtest ~# cat /var/log/messages | grep -i wireguardJun  8
18:20:07 localhost vmunix: [    6.330271] wireguard: WireGuard 1.0.0
loaded. See www.wireguard.com for information.
Jun  8 18:20:07 localhost vmunix: [    6.330276] wireguard: Copyright
(C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights
Reserved.

>However, the standard
>service constructors/destructors no longer block, and shepherd can serve
>multiple clients concurrently.

I don't know, I guess wireguard uses "non-standard" constructors.

On Thu, Jun 2, 2022 at 8:38 AM Ludovic Courtès <ludo@gnu.org> wrote:
>
> Hi Nathan,
>
> Nathan Dehnel <ncdehnel@gmail.com> skribis:
>
> > Just tested and Shepherd 0.9 does not fix this issue.
>
> Could you be more specific?  Specifically, could you share
> /var/log/messages for the parts related to Wireguard?
>
> > On Mon, Jan 17, 2022 at 7:48 AM Ludovic Courtès <ludo@gnu.org> wrote:
>
> [...]
>
> >> One command sent to shepherd by ‘herd …’ must have completed before the
> >> next one is processed.
> >>
> >> You can experience it like this:
> >>
> >>   sudo herd eval root '(sleep 3)' & echo status && sudo herd status
> >>
> >> Here the first ‘herd’ command has shepherd block for 3 seconds, so the
> >> second ‘herd’ command won’t print anything until 3 seconds have passed.
>
> This is actually still the case with 0.9, because here we’re calling
> (@ (guile) sleep), which blocks.  So… not a good example.
>
> The short story is: it is still possible to write code that blocks
> shepherd, as with the ‘sleep’ example above.  However, the standard
> service constructors/destructors no longer block, and shepherd can serve
> multiple clients concurrently.
>
> Ludo’.




  reply	other threads:[~2022-06-08 23:24 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-13  0:27 bug#53225: shepherd freezes if wireguard is started with dns config enabled Nathan Dehnel
2022-01-13 15:11 ` Ludovic Courtès
2022-01-13 22:41   ` Nathan Dehnel
2022-01-17 13:48     ` Ludovic Courtès
2022-06-01 22:56       ` Nathan Dehnel
2022-06-02 13:38         ` Ludovic Courtès
2022-06-08 23:23           ` Nathan Dehnel [this message]
2022-06-09 15:05             ` Ludovic Courtès
2022-06-09 15:49               ` Nathan Dehnel
2022-06-09 20:15                 ` Ludovic Courtès
     [not found]                   ` <CAEEhgEu2nOL6bEGYxrMdNjU8_Hoex-Xm1DMf4Kxj9M4ZEZ0uRg@mail.gmail.com>
2022-06-13  9:31                     ` Ludovic Courtès

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