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From: "Ludovic Courtès" <ludo@gnu.org>
To: Nathan Dehnel <ncdehnel@gmail.com>
Cc: 53225@debbugs.gnu.org
Subject: bug#53225: shepherd freezes if wireguard is started with dns config enabled
Date: Thu, 02 Jun 2022 15:38:56 +0200	[thread overview]
Message-ID: <87o7zbp4lr.fsf@gnu.org> (raw)
In-Reply-To: <CAEEhgEvwfB49rpxW-w_hj+xD5MVy-OkT_AmHThNXK1dYW34Fyw@mail.gmail.com> (Nathan Dehnel's message of "Wed, 1 Jun 2022 17:56:04 -0500")

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:[~2022-06-02 13:40 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 [this message]
2022-06-08 23:23           ` Nathan Dehnel
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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