Re: [DNG] strange mutt pauses

2021-04-26 Thread aw
In article <20210414224738.inwlh5i3ho3iu...@topoi.pooq.com>,
Hendrik Boom   wrote:
>On Thu, Apr 15, 2021 at 05:40:25AM +1000, onefang wrote:
>> On 2021-04-14 17:49:45, d...@d404.nl wrote:
>> > On 14-04-2021 16:19, Hendrik Boom wrote:
>> I use fetchmail to gather emails from my various email providers, that
>> dumps them into my local IMAP server.
>> 
>> I suspect the difference was the computers, not the version of neomutt. 
>> Or it could just be if the check of IMAP stumbles across the fetchmail
>> process updating the IMAP folders.  Or perhaps this later version mostly
>> fixed that pause.  Maybe some combination of the three.
>
>I do not use IMAP.  postfix just puts everything in to my mbox of incoming 
>email.
>
>Anyone know how synchronisation between mutt and postfix works?  I presume 
>it's only needed when exiting mutt and it rewrites the file... or is the 
>mechanism something different?

Usually and with maildir there is not much synchronization: postfix drops
the mail into the filesystem, and mutt sooner or later finds out that there
is new mail.

Everything else is just Unix (or the more modern variations of it), these
days I would suppose mutt is using dnotify to find out that the directory
has changed instead of just polling.

In case of mbox file locking is used so that not two programs write to the
mbox file at the same time or read it while it is written - file locking
is a bit of black magic under Unix (flock/lockf/dotlock - and the
interworkings in case of remote filesystems). If you need to know more an
can not just move to Maildir ask me, I might elaborate.

cu

AW
-- 
[...] If you don't want to be restricted, don't agree to it. If you are
coerced, comply as much as you must to protect yourself, just don't support
it. Noone can free you but yourself. (crag, on Debian Planet)
Arne Wichmann (a...@saar.de)

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Re: [DNG] connection manager as dns resolver?

2021-04-26 Thread Rick Moen
Quoting Hendrik Boom (hend...@topoi.pooq.com):

> Looks as if the connection manager is taking over dns.
> 
> Who knew?  And whom does it talk to?  Does it contain its own recursive 
> DNS resolver?  Or does it just pick up on the DHCP signals it gets from 
> elsewhere and take over?

connman (which I don't use, and have only read about) does _not_ appear
to include a recursive nameserver.  
https://launchpad.net/connman

The data you've posted so far that I've read in this thread (but I
haven't caught up with the full thread, yet) seem bizarre, in suggesting
that connman itself is hogging port 53 on localhost -- which would
definitely mean either it's handling any recursive requests or nothing
is.

I'd have been extremely surprised if any connection management utility
had an integral recursive nameserver.  The latter are complicated
projects, which is why there have been relatively few successful ones.

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[DNG] Which beowulf iso to get a manual partitioner

2021-04-26 Thread terryc
As per subject, I'm looking for hint on which beowulf iso to boot off
to e able to manually fix a paritin take an install grub.

I have recently
run both the beowulf 3.0 and 3.1 desktop iso to carry out installations
of a new system.

Both of these isos do not provide a manual partitioner and the 'auto
partitioner' randomly fails to mark any disk as a boot disk. You end up
with a dummy grub install, which is an error and there no way, that I
can find to break out and do this manually.

Nor could I do it under the expert(?) installation after rebooting to
the install.

The partitioner just wants to partition it all, when all I want to do
is mark one disk as the master boot record and no be forced to do a
complete re-install.

My 2c is this auto-partition creates a real dogs breakfast of
partitions. The auto-created partition table that was created
prior(ascii) had 
free space
ESP
ext4
swap
free space.

This time it was just
free space
ext4
swap (1gb*)
freespace

I do not know if this weird partitioning scheme was part of the reason
for the update grub screwing up.


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Re: [DNG] Steps to recover from borked grub-update

2021-04-26 Thread terryc
On Fri, 23 Apr 2021 17:15:16 +0100
Nick Rickard  wrote:

> Do you still have the old kernel(s) installed on the machine?

Yes, but AFAK these only accessible via grub stage 2 under options
> 
> If so, this guide should enable you to select the older one:
https://www.calazan.com/how-to-set-an-older-kernel-version-as-the-default-in-grub-during-bootup-ubuntu-12-04/

Same problem as I don't have access to /.
Vague memories of having done that/similar in the distand past.
then it was just update-grub/grub-update and all worked
> 
> Although maybe I've misunderstood quite how the kernel problem is 
> causing the grub problem? I do remember having an upper/lower case 
> problem with grub some time ago. The solution was along the lines of:
> 
> set cmdpath=(hd0,gpt1)/efi/devuan   [previously EFI uppercase]
> set prefix=(hd0,gpt1)/efi/devuan
> normal
> 
> at the grub prompt.
> 
> I suspect that's unlikely to be a complete solution, but maybe a few 
> hints in there?

Yes, basically what I've tried, but there s no /efi/devuan.
I've just had no success being able to access any of the file system.

i'm begiing to think that if this sort of problems keep recurring, it
will be a step back to the future from the time when the first hing you
did after installing a system was to created a boot floppy; boot cd/dvd
these days.

Any way, Thank you. 
I've decided to risk it and attempt an OS re-install despite the
rebuilt mailer requiring three attempts to get a booting sstem.
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