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Groups > comp.os.linux.misc > #81041 > unrolled thread

ever had 1GB+ kern.log (and syslog) from changing monitors?

Started byRobert Riches <spamtrap42@jacob21819.net>
First post2026-01-13 04:57 +0000
Last post2026-01-13 19:52 +0000
Articles 18 on this page of 78 — 11 participants

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Contents

  ever had 1GB+ kern.log (and syslog) from changing monitors? Robert Riches <spamtrap42@jacob21819.net> - 2026-01-13 04:57 +0000
    Re: ever had 1GB+ kern.log (and syslog) from changing monitors? c186282 <c186282@nnada.net> - 2026-01-13 00:32 -0500
      Re: ever had 1GB+ kern.log (and syslog) from changing monitors? 🇵🇱Jacek Marcin Jaworski🇵🇱 <jmj@energokod.gda.pl> - 2026-01-13 08:09 +0100
        Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-13 08:16 +0000
          Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-13 11:22 +0100
            Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-13 19:51 +0000
              Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-14 14:42 +0100
                Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-14 20:54 +0000
                  Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-14 23:14 +0100
                    Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-14 22:36 +0000
                      Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-15 14:40 +0100
                        Re: ever had 1GB+ kern.log (and syslog) from changing monitors? The Natural Philosopher <tnp@invalid.invalid> - 2026-01-15 13:54 +0000
                        Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-16 04:20 +0000
                          Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-16 21:40 +0100
                            Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-16 21:03 +0000
                              Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-16 22:23 +0100
                                Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-16 21:41 +0000
                                  Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-16 22:53 +0100
                                    Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-17 20:34 +0000
                                      Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-17 22:57 +0100
                                        Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Marc Haber <mh+usenetspam1118@zugschl.us> - 2026-01-18 11:14 +0100
                                          Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Nuno Silva <nunojsilva@invalid.invalid> - 2026-01-18 10:44 +0000
                                          Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-18 12:50 +0100
                                            Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-18 21:04 +0000
                                              Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-18 23:04 +0100
                                                Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-19 00:46 +0000
                                                  Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Nuno Silva <nunojsilva@invalid.invalid> - 2026-01-19 09:42 +0000
                                                Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Marc Haber <mh+usenetspam1118@zugschl.us> - 2026-01-19 09:56 +0100
                                                  Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-19 14:29 +0100
                                                    Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Marc Haber <mh+usenetspam1118@zugschl.us> - 2026-01-19 15:53 +0100
                                                      Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-19 22:46 +0100
                                                        Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Richard Kettlewell <invalid@invalid.invalid> - 2026-01-19 23:05 +0000
                                                          Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-20 02:36 +0100
                                                            Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-20 03:02 +0000
                                                            Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Richard Kettlewell <invalid@invalid.invalid> - 2026-01-20 08:37 +0000
                                                              Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-20 14:04 +0100
                                                                Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Richard Kettlewell <invalid@invalid.invalid> - 2026-01-20 17:37 +0000
                                                                  Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-20 21:01 +0100
                                                                    Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-20 20:24 +0000
                                                                    Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Richard Kettlewell <invalid@invalid.invalid> - 2026-01-20 22:25 +0000
                                                                Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-20 20:36 +0000
                                                                  Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-20 23:22 +0100
                                                        Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-19 23:24 +0000
                                                          Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-20 02:39 +0100
                                                            Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-23 05:48 +0000
                                                              Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-23 14:07 +0100
                                                                Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-23 21:19 +0000
                                                                  Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-23 22:26 +0100
                                                                    Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Bobbie Sellers <bliss-sf4ever@dslextreme.com> - 2026-01-23 21:45 -0800
                                                                      Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Harold Stevens <wookie@aspen.localdomain> - 2026-01-24 04:18 -0600
                                        Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-18 21:02 +0000
                                          Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-18 23:04 +0100
                                  Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Nuno Silva <nunojsilva@invalid.invalid> - 2026-01-16 23:33 +0000
                                    Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-17 14:33 +0100
                                      Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-17 20:35 +0000
                                        Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-17 22:56 +0100
                                          Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-18 01:51 +0000
                                            Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-18 12:55 +0100
                                              Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-18 21:02 +0000
                                                Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-18 23:05 +0100
                                                  Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-19 00:46 +0000
                              Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Nuno Silva <nunojsilva@invalid.invalid> - 2026-01-16 23:30 +0000
                                Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-17 14:36 +0100
                                  Re: ever had 1GB+ kern.log (and syslog) from changing monitors? The Natural Philosopher <tnp@invalid.invalid> - 2026-01-17 18:25 +0000
                                  Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-17 20:33 +0000
                                  Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Richard Kettlewell <invalid@invalid.invalid> - 2026-01-18 10:48 +0000
                                Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Harold Stevens <wookie@aspen.localdomain> - 2026-01-17 10:23 -0600
                Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Richard Kettlewell <invalid@invalid.invalid> - 2026-01-18 10:43 +0000
                  Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-18 12:59 +0100
                    Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-18 21:06 +0000
                      Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-18 23:06 +0100
                        Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-19 00:48 +0000
                          Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Nuno Silva <nunojsilva@invalid.invalid> - 2026-01-19 09:44 +0000
          Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Nuno Silva <nunojsilva@invalid.invalid> - 2026-01-13 11:40 +0000
      Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Robert Riches <spamtrap42@jacob21819.net> - 2026-01-14 03:27 +0000
    Re: ever had 1GB+ kern.log (and syslog) from changing monitors? "Carlos E.R." <robin_listas@es.invalid> - 2026-01-13 11:24 +0100
      Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Nuno Silva <nunojsilva@invalid.invalid> - 2026-01-13 11:43 +0000
      Re: ever had 1GB+ kern.log (and syslog) from changing monitors? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-01-13 19:52 +0000

Page 4 of 4 — ← Prev page 1 2 3 [4]


#81284

FromLawrence D’Oliveiro <ldo@nz.invalid>
Date2026-01-19 00:46 +0000
Message-ID<10kjutp$3tacf$5@dont-email.me>
In reply to#81280
On Sun, 18 Jan 2026 23:05:56 +0100, Carlos E.R. wrote:

> On 2026-01-18 22:02, Lawrence D’Oliveiro wrote:
>>
>> On Sun, 18 Jan 2026 12:55:40 +0100, Carlos E.R. wrote:
>> 
>>> ... and convert the logs to another set in whatever other time zone
>>> you wish.
>> 
>> But you can’t do that with tools provided with syslog.
> 
> Certainly it can.

Not that part.

[toc] | [prev] | [next] | [standalone]


#81218

FromNuno Silva <nunojsilva@invalid.invalid>
Date2026-01-16 23:30 +0000
Message-ID<10kehls$23etv$1@dont-email.me>
In reply to#81208
On 2026-01-16, Lawrence D’Oliveiro wrote:

> On Fri, 16 Jan 2026 21:40:30 +0100, Carlos E.R. wrote:
>
>> Way too complicated.
>
> First you said it couldn’t be done at all -- that it was
> “intentionally impossible”, and “intentionally not implemented by the
> journal”. Now when I point out it can be done quite easily,
> potentially with just a few lines of script, you claim that’s “way too
> complicated”.
>
> What I think is, it’s your existing way of laboriously copying and
> filtering text-format logfiles with your own (likely regexp-heavy)
> custom scripting, that is “way too complicated”, and you are suffering
> from something called the “sunk-cost fallacy”, where you don’t want to
> throw away all the effort you have put into your existing ways of
> doing things, even if the new way is simpler.

No, you're again LDO-ing the conversation. You effectively said this
can't be done within systemd's journal. That may be ok, and it may well
be possible to do it externaly, easily or less so, but the point stands
that someone pointed a use case for which that journal apparently (from
what you said) isn't a suitable replacement.

As usual, you try to sweep this under the rug of "it's FLOSS so you can
change it [or make it part of a larger workflow]".

(If you really insist in going in that direction, there's not much to be
discussed, because, as far as the missing bits can be implemented in a
Turing-complete language, it has to be possible to do so; the only
limitation is going to be licensing. That part you got right. But
derailing the train of thought this way really appears like you're
making extensive efforts to avoid conceding that the tool you prefer
does not have this feature.)

-- 
Nuno Silva

[toc] | [prev] | [next] | [standalone]


#81244

From"Carlos E.R." <robin_listas@es.invalid>
Date2026-01-17 14:36 +0100
Message-ID<fsfs3mxu17.ln2@Telcontar.valinor>
In reply to#81218
On 2026-01-17 00:30, Nuno Silva wrote:
> On 2026-01-16, Lawrence D’Oliveiro wrote:
> 
>> On Fri, 16 Jan 2026 21:40:30 +0100, Carlos E.R. wrote:
>>
>>> Way too complicated.
>>
>> First you said it couldn’t be done at all -- that it was
>> “intentionally impossible”, and “intentionally not implemented by the
>> journal”. Now when I point out it can be done quite easily,
>> potentially with just a few lines of script, you claim that’s “way too
>> complicated”.
>>
>> What I think is, it’s your existing way of laboriously copying and
>> filtering text-format logfiles with your own (likely regexp-heavy)
>> custom scripting, that is “way too complicated”, and you are suffering
>> from something called the “sunk-cost fallacy”, where you don’t want to
>> throw away all the effort you have put into your existing ways of
>> doing things, even if the new way is simpler.
> 
> No, you're again LDO-ing the conversation. You effectively said this
> can't be done within systemd's journal. That may be ok, and it may well
> be possible to do it externaly, easily or less so, but the point stands
> that someone pointed a use case for which that journal apparently (from
> what you said) isn't a suitable replacement.
> 
> As usual, you try to sweep this under the rug of "it's FLOSS so you can
> change it [or make it part of a larger workflow]".
> 
> (If you really insist in going in that direction, there's not much to be
> discussed, because, as far as the missing bits can be implemented in a
> Turing-complete language, it has to be possible to do so; the only
> limitation is going to be licensing. That part you got right. But
> derailing the train of thought this way really appears like you're
> making extensive efforts to avoid conceding that the tool you prefer
> does not have this feature.)
> 

In some machines, the journal is cryptographically signed. Thus any 
later manipulation is impossible, it invalidates the signature.

-- 
Cheers, Carlos.
ES🇪🇸, EU🇪🇺;

[toc] | [prev] | [next] | [standalone]


#81248

FromThe Natural Philosopher <tnp@invalid.invalid>
Date2026-01-17 18:25 +0000
Message-ID<10kgk5t$2olv6$2@dont-email.me>
In reply to#81244
On 17/01/2026 13:36, Carlos E.R. wrote:
> On 2026-01-17 00:30, Nuno Silva wrote:
>> On 2026-01-16, Lawrence D’Oliveiro wrote:
>>
>>> On Fri, 16 Jan 2026 21:40:30 +0100, Carlos E.R. wrote:
>>>
>>>> Way too complicated.
>>>
>>> First you said it couldn’t be done at all -- that it was
>>> “intentionally impossible”, and “intentionally not implemented by the
>>> journal”. Now when I point out it can be done quite easily,
>>> potentially with just a few lines of script, you claim that’s “way too
>>> complicated”.
>>>
>>> What I think is, it’s your existing way of laboriously copying and
>>> filtering text-format logfiles with your own (likely regexp-heavy)
>>> custom scripting, that is “way too complicated”, and you are suffering
>>> from something called the “sunk-cost fallacy”, where you don’t want to
>>> throw away all the effort you have put into your existing ways of
>>> doing things, even if the new way is simpler.
>>
>> No, you're again LDO-ing the conversation. You effectively said this
>> can't be done within systemd's journal. That may be ok, and it may well
>> be possible to do it externaly, easily or less so, but the point stands
>> that someone pointed a use case for which that journal apparently (from
>> what you said) isn't a suitable replacement.
>>
>> As usual, you try to sweep this under the rug of "it's FLOSS so you can
>> change it [or make it part of a larger workflow]".
>>
>> (If you really insist in going in that direction, there's not much to be
>> discussed, because, as far as the missing bits can be implemented in a
>> Turing-complete language, it has to be possible to do so; the only
>> limitation is going to be licensing. That part you got right. But
>> derailing the train of thought this way really appears like you're
>> making extensive efforts to avoid conceding that the tool you prefer
>> does not have this feature.)
>>
> 
> In some machines, the journal is cryptographically signed. Thus any 
> later manipulation is impossible, it invalidates the signature.
> 
Yes. systemd is very 'big corporate' Huge data, no tampering, discard 
nothing *in case*.
Totally inappropriate for single user  desktop use.


-- 
"First, find out who are the people you can not criticise. They are your 
oppressors."
      - George Orwell

[toc] | [prev] | [next] | [standalone]


#81249

FromLawrence D’Oliveiro <ldo@nz.invalid>
Date2026-01-17 20:33 +0000
Message-ID<10kgrn6$2rc7o$3@dont-email.me>
In reply to#81244
On Sat, 17 Jan 2026 14:36:47 +0100, Carlos E.R. wrote:

> In some machines, the journal is cryptographically signed. Thus any
> later manipulation is impossible, it invalidates the signature.

Where do you think a piece of open-source software could hide a crypto
key from you on your own machine?

This sort of thing is always under the sysadmin’s control.

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#81263

FromRichard Kettlewell <invalid@invalid.invalid>
Date2026-01-18 10:48 +0000
Message-ID<wwv3443nqm9.fsf@LkoBDZeT.terraraq.uk>
In reply to#81244
"Carlos E.R." <robin_listas@es.invalid> writes:
> In some machines, the journal is cryptographically signed. Thus any
> later manipulation is impossible, it invalidates the signature.

_Undetectable_ manipulation is impossible. Data doesn’t become immutable
just because there’s a signature on it.

In the specific case of journald: If you don’t want signed logs, you
don’t have to sign them. If you do have signed logs, you don’t have to
verify them if you don’t want to.

-- 
https://www.greenend.org.uk/rjk/

[toc] | [prev] | [next] | [standalone]


#81246

FromHarold Stevens <wookie@aspen.localdomain>
Date2026-01-17 10:23 -0600
Message-ID<slrn10mndsk.1376.wookie@aspen.localdomain>
In reply to#81218
In Message-ID: <10kehls$23etv$1@dont-email.me>

> No, you're again LDO-ing the conversation.

+1

Carlos may as well not be involved. FLOSS Gospel matters more.

-- 
Regards, Weird (Harold Stevens) * IMPORTANT EMAIL INFO FOLLOWS *
Pardon any bogus email addresses (wookie) in place for spambots.
Really, it's (wyrd) at att, dotted with net. * DO NOT SPAM IT. *
I toss (404) GoogleGroup (404 http://twovoyagers.com/improve-usenet.org/).

[toc] | [prev] | [next] | [standalone]


#81261

FromRichard Kettlewell <invalid@invalid.invalid>
Date2026-01-18 10:43 +0000
Message-ID<wwv8qdvnqv8.fsf@LkoBDZeT.terraraq.uk>
In reply to#81115
"Carlos E.R." <robin_listas@es.invalid> writes:
> I want to purge from the journal all messages from facility=news,
> level>Warning, age> 7 days. Only those messages. Leave all the rest
> intact.
>
> Doing this goes against the philosophy of the journal, so it is
> intentionally imposible.

It’s a long-standing TODO[1]. There is also support for multiple
namespaces with different expiry policies, but I suspect it’s not
flexible enought to meet your requirements in a sensible way.

Anyway, this is not consistent with “intentionally impossible”.  It just
hasn’t been implemented yet.

[1] from https://github.com/systemd/systemd/blob/main/TODO#L2454:

   - journald: allow per-priority and per-service retention times when
     rotating/vacuuming

-- 
https://www.greenend.org.uk/rjk/

[toc] | [prev] | [next] | [standalone]


#81267

From"Carlos E.R." <robin_listas@es.invalid>
Date2026-01-18 12:59 +0100
Message-ID<7huu3mxkli.ln2@Telcontar.valinor>
In reply to#81261
On 2026-01-18 11:43, Richard Kettlewell wrote:
> "Carlos E.R." <robin_listas@es.invalid> writes:
>> I want to purge from the journal all messages from facility=news,
>> level>Warning, age> 7 days. Only those messages. Leave all the rest
>> intact.
>>
>> Doing this goes against the philosophy of the journal, so it is
>> intentionally imposible.
> 
> It’s a long-standing TODO[1]. There is also support for multiple
> namespaces with different expiry policies, but I suspect it’s not
> flexible enought to meet your requirements in a sensible way.
> 
> Anyway, this is not consistent with “intentionally impossible”.  It just
> hasn’t been implemented yet.

I was told it was “intentionally impossible” by people in the know back 
then.

> 
> [1] from https://github.com/systemd/systemd/blob/main/TODO#L2454:
> 
>     - journald: allow per-priority and per-service retention times when
>       rotating/vacuuming

Good to know.


-- 
Cheers, Carlos.
ES🇪🇸, EU🇪🇺;

[toc] | [prev] | [next] | [standalone]


#81273

FromLawrence D’Oliveiro <ldo@nz.invalid>
Date2026-01-18 21:06 +0000
Message-ID<10kji10$3p7to$5@dont-email.me>
In reply to#81267
On Sun, 18 Jan 2026 12:59:03 +0100, Carlos E.R. wrote:

> I was told it was “intentionally impossible” by people in the know
> back then.

Obviously, whatever it was they were “in the know” about, it wasn’t
systemd.

Shouldn’t it have been obvious to you, even back then if not now, that
you *cannot* design Open Source software to make anything (short of
violating the laws of mathematics or physics) “intentionally
impossible”?

[toc] | [prev] | [next] | [standalone]


#81279

From"Carlos E.R." <robin_listas@es.invalid>
Date2026-01-18 23:06 +0100
Message-ID<c4204mx7r3.ln2@Telcontar.valinor>
In reply to#81273
On 2026-01-18 22:06, Lawrence D’Oliveiro wrote:
> On Sun, 18 Jan 2026 12:59:03 +0100, Carlos E.R. wrote:
> 
>> I was told it was “intentionally impossible” by people in the know
>> back then.
> 
> Obviously, whatever it was they were “in the know” about, it wasn’t
> systemd.

Oh, yes they were. Systemd devs.

> 
> Shouldn’t it have been obvious to you, even back then if not now, that
> you *cannot* design Open Source software to make anything (short of
> violating the laws of mathematics or physics) “intentionally
> impossible”?


-- 
Cheers, Carlos.
ES🇪🇸, EU🇪🇺;

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#81285

FromLawrence D’Oliveiro <ldo@nz.invalid>
Date2026-01-19 00:48 +0000
Message-ID<10kjv0n$3tacf$6@dont-email.me>
In reply to#81279
On Sun, 18 Jan 2026 23:06:36 +0100, Carlos E.R. wrote:

> On 2026-01-18 22:06, Lawrence D’Oliveiro wrote:
>>
>> On Sun, 18 Jan 2026 12:59:03 +0100, Carlos E.R. wrote:
>>
>>> I was told it was “intentionally impossible” by people in the know
>>> back then.
>>
>> Obviously, whatever it was they were “in the know” about, it wasn’t
>> systemd.
>
> Oh, yes they were. Systemd devs.

All I can say is, either they misinterpreted your question, or you
misinterpreted their reply. Because the tools provided do indeed allow
you to filter the logs in exactly the way you have described.

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#81293

FromNuno Silva <nunojsilva@invalid.invalid>
Date2026-01-19 09:44 +0000
Message-ID<10kkudi$6osq$2@dont-email.me>
In reply to#81285
On 2026-01-19, Lawrence D’Oliveiro wrote:

> On Sun, 18 Jan 2026 23:06:36 +0100, Carlos E.R. wrote:
>
>> On 2026-01-18 22:06, Lawrence D’Oliveiro wrote:
>>>
>>> On Sun, 18 Jan 2026 12:59:03 +0100, Carlos E.R. wrote:
>>>
>>>> I was told it was “intentionally impossible” by people in the know
>>>> back then.
>>>
>>> Obviously, whatever it was they were “in the know” about, it wasn’t
>>> systemd.
>>
>> Oh, yes they were. Systemd devs.
>
> All I can say is, either they misinterpreted your question, or you
> misinterpreted their reply. Because the tools provided do indeed allow
> you to filter the logs in exactly the way you have described.

You keep doing this, you keep alluding at your idea of externally
handling it as evidence that it can be done internally. Those are two
different things.

-- 
Nuno Silva

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#81071

FromNuno Silva <nunojsilva@invalid.invalid>
Date2026-01-13 11:40 +0000
Message-ID<10k5auk$32slq$3@dont-email.me>
In reply to#81057
On 2026-01-13, Lawrence D’Oliveiro wrote:

> On Tue, 13 Jan 2026 08:09:56 +0100, 🇵🇱Jacek Marcin Jaworski🇵🇱 wrote:
>
>> Logrotate should automatically delete older logs. Even in the case of 
>> flood logs.
>
> systemd deals with this sort of thing a lot better.

Really? Care to elaborate? I'd think both would deal with it in some way
once configured to do so. Why are you elevating systemd on this regard?
What's the killer feature there that logrotate and compatible syslog
implementations don't have?

-- 
Nuno Silva

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#81102

FromRobert Riches <spamtrap42@jacob21819.net>
Date2026-01-14 03:27 +0000
Message-ID<slrn10me38l.oqh.spamtrap42@one.localnet>
In reply to#81044
On 2026-01-13, c186282 <c186282@nnada.net> wrote:
> On 1/12/26 23:57, Robert Riches wrote:
>> Each of my /var/log/syslog and /var/log/kern.log is over 1GB
>> today after unplugging two monitors and plugging in two different
>> monitors.
>> 
>> The hardware is about 5 years old:
>>    - Motherboard: Asus Pro WS X570-ACE
>>    - Processor: AMD Ryzen 7 5800X 8-Core Processor
>>    - GPU: MSI Radeon RX5500XT
>>    - old monitors: 2x Asus VW266H
>>    - new monitors: 2x Asus PA279CV
>> 
>> Software is Devuan Daedalus.
>> 
>> The old monitors were connected to the first two DisplayPort
>> connectors via (probably no-name) DisplayPort-to-HDMI adapters
>> and a Kopul HDMI switchers.
>> 
>> The new monitors are connected to the same first two DisplayPort
>> connectors via PearStone DisplayPort-to-HDMI adapters and the
>> same Kopul HDMI switchers.
>> 
>> (The switchers let me push a button and see security camera
>> output on one monitor, then push another button to go back to
>> computer stuff.)
>> 
>> I had tested the new monitors and adapter cables via the GPU's
>> third DisplayPort connector, with and without going through the
>> switcher.  All tested out well.
>> 
>> Today, while the machine would have been showing the text console
>> and not X, I physically installed the new monitors on the
>> above-desk mounts and plugging everything in.  The switchers
>> showed that there was signal on the input line, but the monitors
>> stayed in standby mode.  About the time I plugging things in,
>> syslog and kern.log show the following:
>> 
>> 2026-01-12T12:00:37.370890-08:00 one kernel: [180281.980042] [drm:retrieve_link_
>> cap [amdgpu]] *ERROR* retrieve_link_cap: Read receiver caps dpcd data failed.
>> 2026-01-12T12:00:38.627964-08:00 one kernel: [180283.233347] ------------[ cut h
>> ere ]------------
>> 2026-01-12T12:00:38.627976-08:00 one kernel: [180283.234095] WARNING: CPU: 7 PID
>> : 13497 at drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc.c:3076 dc_update_pla
>> nes_and_stream+0x342/0x880 [amdgpu]
>> 
>> then lists of kernel modules, register dumps, stack traces
>> and etc.
>> 
>> then a ton of these:
>> 
>> 2026-01-12T12:00:38.754724-08:00 one kernel: [180283.364640] [drm:dc_add_plane_to_context [amdgpu]] *ERROR* Head pipe not found for stream_state 000000000268a75b !
>> 2026-01-12T12:00:38.758717-08:00 one kernel: [180283.365909] [drm:dc_add_plane_to_context [amdgpu]] *ERROR* Head pipe not found for stream_state 000000000268a75b !
>> 2026-01-12T12:00:38.758720-08:00 one kernel: [180283.367165] [drm:dc_add_plane_to_context [amdgpu]] *ERROR* Head pipe not found for stream_state 000000000268a75b !
>> 
>> at a rate of about 980 per second for a total of about 6,803,402
>> lines and just over 1GB of text in each file.  Thankfully, a
>> clean reboot of the machine accomplished via a thin-client
>> machine, the GPU, switchers, and monitors signed a peace treaty
>> and are now happily working together.
>> 
>> Has anyone else seen anything similar to that?
>> 
>> Thanks.
>
>
>    Ummm ... minor errors CAN produce HUGE log files.
>
>    You can either do a LOT of research OR just write
>    a root crontab script that nukes "older" logs.

With behavior probably inherited from pre-systemd Debian, Devuan
takes care of that pretty well for most practical purposes: keep
the current file and one prior uncompressed, compress everything
older than that, keep only a fixed number of compressed files.
IIRC, I have seen the same or rather similar behavior in all
other distributions I have used.

In this particular case, the flooding has stopped, and there is
enough disk space that the current 1.1GB files won't likely be a
problem between now and when they are rotated off the edge of the
planet.  If I had been more prompt in logging in from the
thin-client machine, the files would not have reached the size
they did.

Thanks.

-- 
Robert Riches
spamtrap42@jacob21819.net
(Yes, that is one of my email addresses.)

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#81065

From"Carlos E.R." <robin_listas@es.invalid>
Date2026-01-13 11:24 +0100
Message-ID<b3jh3mx9rh.ln2@Telcontar.valinor>
In reply to#81041
On 2026-01-13 05:57, Robert Riches wrote:
> then a ton of these:
> 
> 2026-01-12T12:00:38.754724-08:00 one kernel: [180283.364640] [drm:dc_add_plane_to_context [amdgpu]]*ERROR* Head pipe not found for stream_state 000000000268a75b !
> 2026-01-12T12:00:38.758717-08:00 one kernel: [180283.365909] [drm:dc_add_plane_to_context [amdgpu]]*ERROR* Head pipe not found for stream_state 000000000268a75b !
> 2026-01-12T12:00:38.758720-08:00 one kernel: [180283.367165] [drm:dc_add_plane_to_context [amdgpu]]*ERROR* Head pipe not found for stream_state 000000000268a75b !

Repeated entries should have been detected and filtered, with a line 
like "1000 of these".

-- 
Cheers, Carlos.
ES🇪🇸, EU🇪🇺;

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#81072

FromNuno Silva <nunojsilva@invalid.invalid>
Date2026-01-13 11:43 +0000
Message-ID<10k5b44$32slq$4@dont-email.me>
In reply to#81065
On 2026-01-13, Carlos E.R. wrote:

> On 2026-01-13 05:57, Robert Riches wrote:
>> then a ton of these:
>>
>> 2026-01-12T12:00:38.754724-08:00 one kernel: [180283.364640]
>> [drm:dc_add_plane_to_context [amdgpu]]*ERROR* Head pipe not found
>> for stream_state 000000000268a75b !
>> 2026-01-12T12:00:38.758717-08:00 one kernel: [180283.365909]
>> [drm:dc_add_plane_to_context [amdgpu]]*ERROR* Head pipe not found
>> for stream_state 000000000268a75b !
>> 2026-01-12T12:00:38.758720-08:00 one kernel: [180283.367165]
>> [drm:dc_add_plane_to_context [amdgpu]]*ERROR* Head pipe not found
>> for stream_state 000000000268a75b !
>
> Repeated entries should have been detected and filtered, with a line
> like "1000 of these".

That, if present, ought to be configurable, because the timestamps are
information too.

-- 
Nuno Silva

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#81094

FromLawrence D’Oliveiro <ldo@nz.invalid>
Date2026-01-13 19:52 +0000
Message-ID<10k67pd$3cii8$5@dont-email.me>
In reply to#81065
On Tue, 13 Jan 2026 11:24:11 +0100, Carlos E.R. wrote:

> Repeated entries should have been detected and filtered, with a line
> like "1000 of these".

systemd does that by default.

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