[systemd-devel] [PATCH] use systemd.debug on the kernel command line, not "debug"

[Thomas Bächler]

Am 03.04.2014 11:36, schrieb David Herrmann:
> On Thu, Apr 3, 2014 at 11:08 AM, Tom Gundersen <teg at jklm.no> wrote:
>> Or is there actually a bug going on here? My impression from reading
>> related discussions was that "systemd.log_level=debug loglevel=debug"
>> triggers some bug (so in particular "debug" now triggers the bug). It
>> was not clear to me whether boot itself hangs, or if log-in becomes
>> impossible. Either way, I'm not able to reproduce it, so if anyone has
>> any more info on this, that would be useful.
> 
> There was a bug there which triggered the assertions. However, it has
> been fixed in -git for quite some time, so with -git systemd will
> _not_ log an unreasonable amount of information.

Let me quote Linus from http://www.spinics.net/lists/kernel/msg1716484.html:

> No, we very much expose /proc/cmdline for a reason. System services
> are *supposed* to parse it, because it gives a unified way for people
> to pass in various flags.
> [...]
> And yes, that does include "quiet" and "debug". Parsing them and doing
> something sane with them is not a bug, it's a feature.

The original complaint was that the systemd debug output was so
excessive that the system became unusable and the debug output
unreadable. If what Hermann said above is true and that problem has been
fixed, then the debug output is "sane" now and everything is fine. In
that case, there is nothing to do. (In fact, the problem was already
identified and fixed before this whole discussion started.)

Is there anything else I am missing here?

(Adding Linus and Greg to CC to see if there actually is something that
I am missing.)

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