GNU bug report logs - #23910
[Guix Info][7.1.5] Should warn user about losing Internet or DNS connection

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: ludo <at> gnu.org (Ludovic Courtès)
Cc: tracker <at> debbugs.gnu.org
Subject: bug#23910: closed ([Guix Info][7.1.5] Should warn user about
 losing Internet or DNS connection)
Date: Tue, 13 Sep 2016 09:53:01 +0000

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Your message dated Tue, 13 Sep 2016 11:52:17 +0200
with message-id <87h99k86um.fsf <at> gnu.org>
and subject line Re: bug#23910: [Guix Info][7.1.5] Should warn user about losing Internet or DNS connection
has caused the debbugs.gnu.org bug report #23910,
regarding [Guix Info][7.1.5] Should warn user about losing Internet or DNS connection
to be marked as done.

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From: Eus <eus <at> member.fsf.org>
To: bug-guix <at> gnu.org
Subject: [Guix Info][7.1.5] Should warn user about losing Internet or DNS
 connection
Date: Thu, 07 Jul 2016 19:06:35 +0700

Hi!

When downloading substitutes via wireless connection, several times I encountered a case where the host name of hydra cannot be resolved. So, the "guix system init" fails and suggests the use of "--fallback" option. However, rather than continuing with "guix system --fallback init", one should actually try "dhclient -v WIRELESS_INTERFACE_NAME" first and then do "guix system init" again instead of "guix system --fallback init". My installation process is now going well with this strategy. Previously, I kept using "--fallback" that didn't solve the problem due to network connectivity error because using "--fallback" brought up built errors.

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Eus (FSF member #4445)

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From: ludo <at> gnu.org (Ludovic Courtès)
To: Eus <eus <at> member.fsf.org>
Cc: 23910-done <at> debbugs.gnu.org
Subject: Re: bug#23910: [Guix Info][7.1.5] Should warn user about losing
 Internet or DNS connection
Date: Tue, 13 Sep 2016 11:52:17 +0200

Hello!

Eus <eus <at> member.fsf.org> skribis:

> Sorry for replying just now. I did not try to reproduce the bug back at
> that time. So, I took the time yesterday to try to reproduce the bug. And,
> I cannot reproduce the problem after repeating the following rough steps
> two times with the same bootable disk and machine and network (but the
> external connection to the ISP may have changed in the mean time):
>
> 1. Format my /dev/sda8
> 2. Swapon my /dev/sda7
> 3. mount my /dev/sda8 to /mnt
> 4. herd start cow-store /mnt
> 5. umount /tmp
> 6. mount --bind /mnt/tmp2 /tmp
> 7. ifconfig, wpa_supplicant, dhclient
> 8. guix pull
> 9. guix system --no-grub --keep-failed init /mnt/etc/config.scm /mnt

Normally step #8 can be omitted because hydra.gnu.org still has binaries
for the packages 0.11.0 provides.

Step #6 is also redundant with step #4 (‘herd start cow-store’ make /tmp
a bind mount to /mnt/tmp; see gnu/system/install.scm:154.)

> The whole process took just about 100 minutes.

That’s a lot of time.

> So, I cannot reproduce the bug.

Great.  Thanks for taking the time to verify!

Ludo’.

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