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From: ludo@gnu.org (Ludovic Courtès)
To: Danny Milosavljevic <dannym@scratchpost.org>
Cc: 30464@debbugs.gnu.org
Subject: [bug#30464] shepherd logging
Date: Sat, 17 Feb 2018 17:25:07 +0100	[thread overview]
Message-ID: <87k1vbk2ho.fsf@gnu.org> (raw)
In-Reply-To: <20180216220737.0b5b7c0d@scratchpost.org> (Danny Milosavljevic's message of "Fri, 16 Feb 2018 22:07:37 +0100")

Danny Milosavljevic <dannym@scratchpost.org> skribis:

> Oops, didn't see /var/log/shepherd.log - but I think it should just
> use syslog for that - and it's possible to use syslog for that by
> writing to /dev/kmsg .
>
> Does the Hurd with /dev/kmsg ?

It doesn’t have /dev/kmsg, but it has /dev/klog:

--8<---------------cut here---------------start------------->8---
ludo@darnassus:~$ ls -l /dev/klog 
crw-rw---- 1 root root 0, 0 Jul 16  2015 /dev/klog
ludo@darnassus:~$ showtrans /dev/klog 
/hurd/streamio kmsg
--8<---------------cut here---------------end--------------->8---

> How do they solve early boot logging ?

GNU Mach has a special “console” device that early boot processes can
open and write too, as in:

  https://git.savannah.gnu.org/cgit/hurd/hurd.git/tree/startup/startup.c#n731

It’s comparable to /dev/kmsg, but it exists before file system servers
are brought up, which is why it doesn’t have an entry in the file
system hierarchy.

Ludo’.

  reply	other threads:[~2018-02-17 16:26 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-02-15 11:42 [bug#30464] [PATCH 0/2] Add console-agetty-service Danny Milosavljevic
2018-02-15 11:47 ` [bug#30464] [PATCH 1/2] services: " Danny Milosavljevic
2018-02-15 11:47   ` [bug#30464] [PATCH 2/2] services: agetty-shepherd-service: Default to providing 'term-console instead of 'term-auto Danny Milosavljevic
2018-02-15 14:40   ` [bug#30464] [PATCH 1/2] services: Add console-agetty-service Ludovic Courtès
2018-02-15 15:41     ` Danny Milosavljevic
2018-02-15 15:47       ` Ludovic Courtès
2018-02-16 20:57         ` [bug#30464] shepherd logging; console-agetty-service Danny Milosavljevic
2018-02-16 21:07           ` [bug#30464] shepherd logging Danny Milosavljevic
2018-02-17 16:25             ` Ludovic Courtès [this message]
2018-02-17 16:47               ` Danny Milosavljevic
2018-02-17 16:57                 ` Ludovic Courtès
2018-02-17 16:20           ` [bug#30464] shepherd logging; console-agetty-service Ludovic Courtès
2018-02-26 17:52         ` [bug#30464] [PATCH 1/2] services: Add console-agetty-service Ludovic Courtès
2020-10-08 18:21           ` Maxim Cournoyer
2022-01-13 16:02             ` [bug#30464] [PATCH 0/2] " zimoun
2022-02-03  2:33               ` zimoun
2022-02-03 20:55                 ` Danny Milosavljevic
2022-03-23 13:00                   ` zimoun

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