* bug#45302: Avahi substitute discovery keeps trying to ping unaccessible servers
@ 2020-12-17 17:40 Pierre Neidhardt
[not found] ` <handler.45302.B.16082268462565.ack@debbugs.gnu.org>
` (2 more replies)
0 siblings, 3 replies; 7+ messages in thread
From: Pierre Neidhardt @ 2020-12-17 17:40 UTC (permalink / raw)
To: 45302
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I've set up my desktop and laptop to use the new substitute discovery
feature, it's awesome!
However, when I put my desktop to sleep and run a Guix command on my
laptop that requires access to a sbustitute server, I see this:
--8<---------------cut here---------------start------------->8---
$ guix build ncdu
substitute: guix substitute: warning: 10.0.0.5: connection failed: No route to host
substitute: updating substitutes from 'http://ci.guix.gnu.org'... 100.0%
0.0 MB will be downloaded:
/gnu/store/p70r4maqgh6ghl25h5a99w7sf1jidap8-ncdu-1.15.1
substituting /gnu/store/p70r4maqgh6ghl25h5a99w7sf1jidap8-ncdu-1.15.1...
--8<---------------cut here---------------end--------------->8---
The warning
--8<---------------cut here---------------start------------->8---
substitute: guix substitute: warning: 10.0.0.5: connection failed: No route to host
--8<---------------cut here---------------end--------------->8---
pops up on every download, which adds some 2s delay each time. This
makes the whole process much slower.
For your information, Avahi does not find my desktop:
--8<---------------cut here---------------start------------->8---
$ sudo avahi-browse -al
Password:
+ wlp2s0 IPv6 FOO___s MacBook Pro _companion-link._tcp local
+ wlp2s0 IPv4 FOO___s MacBook Pro _companion-link._tcp local
C-c C-cGot SIGINT, quitting.
--8<---------------cut here---------------end--------------->8---
--
Pierre Neidhardt
https://ambrevar.xyz/
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^ permalink raw reply [flat|nested] 7+ messages in thread[parent not found: <handler.45302.B.16082268462565.ack@debbugs.gnu.org>]
* bug#45302: Avahi substitute discovery keeps trying to ping unaccessible servers
2020-12-17 17:40 bug#45302: Avahi substitute discovery keeps trying to ping unaccessible servers Pierre Neidhardt
[not found] ` <handler.45302.B.16082268462565.ack@debbugs.gnu.org>
@ 2020-12-22 3:25 ` Maxim Cournoyer
2020-12-22 9:45 ` Pierre Neidhardt
2021-01-11 13:24 ` Mathieu Othacehe
2 siblings, 1 reply; 7+ messages in thread
From: Maxim Cournoyer @ 2020-12-22 3:25 UTC (permalink / raw)
To: Pierre Neidhardt; +Cc: 45302
Hello,
Pierre Neidhardt <mail@ambrevar.xyz> writes:
> I've set up my desktop and laptop to use the new substitute discovery
> feature, it's awesome!
>
> However, when I put my desktop to sleep and run a Guix command on my
> laptop that requires access to a sbustitute server, I see this:
>
> $ guix build ncdu
> substitute: guix substitute: warning: 10.0.0.5: connection failed: No route to host
> substitute: updating substitutes from 'http://ci.guix.gnu.org'... 100.0%
> 0.0 MB will be downloaded:
> /gnu/store/p70r4maqgh6ghl25h5a99w7sf1jidap8-ncdu-1.15.1
> substituting /gnu/store/p70r4maqgh6ghl25h5a99w7sf1jidap8-ncdu-1.15.1...
>
>
> The warning
>
> substitute: guix substitute: warning: 10.0.0.5: connection failed: No route to host
>
>
> pops up on every download, which adds some 2s delay each time. This
> makes the whole process much slower.
>
> For your information, Avahi does not find my desktop:
>
> $ sudo avahi-browse -al
> Password:
> + wlp2s0 IPv6 FOO___s MacBook Pro _companion-link._tcp local
> + wlp2s0 IPv4 FOO___s MacBook Pro _companion-link._tcp local
> C-c C-cGot SIGINT, quitting.
This reminds me of https://issues.guix.gnu.org/30290. Perhaps if we can
fix that one it'd make this one go away too?. I was thinking of having
a simple mean to reduce the request attempts on servers down for a long
while, such as entering dead periods (breaks): "I've tried X times, it
doesn't respond, I give up for the next Y minutes"; allowing for X and Y
to be configured via the <guix-publish-configuration> record.
Do you think this would help?
Maxim
^ permalink raw reply [flat|nested] 7+ messages in thread* bug#45302: Avahi substitute discovery keeps trying to ping unaccessible servers
2020-12-17 17:40 bug#45302: Avahi substitute discovery keeps trying to ping unaccessible servers Pierre Neidhardt
[not found] ` <handler.45302.B.16082268462565.ack@debbugs.gnu.org>
2020-12-22 3:25 ` bug#45302: Avahi substitute discovery keeps trying to ping unaccessible servers Maxim Cournoyer
@ 2021-01-11 13:24 ` Mathieu Othacehe
2021-01-18 11:14 ` Pierre Neidhardt
2021-01-26 10:53 ` Pierre Neidhardt
2 siblings, 2 replies; 7+ messages in thread
From: Mathieu Othacehe @ 2021-01-11 13:24 UTC (permalink / raw)
To: Pierre Neidhardt; +Cc: 45302
Hello Pierre,
> I've set up my desktop and laptop to use the new substitute discovery
> feature, it's awesome!
Glad you like it, and sorry for the late answer.
> substitute: guix substitute: warning: 10.0.0.5: connection failed: No route to host
Once your laptop goes to sleep, Avahi should detect that the publish
service is gone and remove it from the cache at
/var/guix/discovery/publish.
I'm having troubles reproducing it at home. Could you please run
"avahi-browse -a" on your desktop, put your laptop to sleep, and check
if the publish server disappears this way:
--8<---------------cut here---------------start------------->8---
- enp7s0f0 IPv6 guix-publish-cervin _guix_publish._tcp local
- enp7s0f0 IPv4 guix-publish-cervin _guix_publish._tcp local
--8<---------------cut here---------------end--------------->8---
Regarding the reboot issue, that's because the cache wasn't cleaned-up,
it should by fixed with: ee94cd265e03d12eeeccf58cbaf74b90008fcd14.
Thanks,
Mathieu
^ permalink raw reply [flat|nested] 7+ messages in thread* bug#45302: Avahi substitute discovery keeps trying to ping unaccessible servers
2021-01-11 13:24 ` Mathieu Othacehe
@ 2021-01-18 11:14 ` Pierre Neidhardt
2021-01-26 10:53 ` Pierre Neidhardt
1 sibling, 0 replies; 7+ messages in thread
From: Pierre Neidhardt @ 2021-01-18 11:14 UTC (permalink / raw)
To: Mathieu Othacehe; +Cc: 45302
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Hi Mathieu,
sorry, didn't have much time to play with Guix recently.
All I can say is that I haven't experienced the issue lately.
I'm on commit c03875b0361f114634caeb54935fe37a9b7b05af.
I'll try the commands you suggested later. Thanks for your time!
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^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#45302: Avahi substitute discovery keeps trying to ping unaccessible servers
2021-01-11 13:24 ` Mathieu Othacehe
2021-01-18 11:14 ` Pierre Neidhardt
@ 2021-01-26 10:53 ` Pierre Neidhardt
1 sibling, 0 replies; 7+ messages in thread
From: Pierre Neidhardt @ 2021-01-26 10:53 UTC (permalink / raw)
To: Mathieu Othacehe; +Cc: 45302
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Hi Mathieu,
> Glad you like it, and sorry for the late answer.
No worries! :)
>> substitute: guix substitute: warning: 10.0.0.5: connection failed: No route to host
>
> Once your laptop goes to sleep, Avahi should detect that the publish
> service is gone and remove it from the cache at
> /var/guix/discovery/publish.
>
> I'm having troubles reproducing it at home. Could you please run
> "avahi-browse -a" on your desktop, put your laptop to sleep, and check
> if the publish server disappears this way:
>
> --8<---------------cut here---------------start------------->8---
> - enp7s0f0 IPv6 guix-publish-cervin _guix_publish._tcp local
> - enp7s0f0 IPv4 guix-publish-cervin _guix_publish._tcp local
> --8<---------------cut here---------------end--------------->8---
To be sure we are on the same page, my desktop is the publisher, my
laptop is the client.
From my desktop:
--8<---------------cut here---------------start------------->8---
$ avahi-browse -a
+ enp7s0 IPv6 guix-publish-DESKTOP _guix_publish._tcp local
+ enp7s0 IPv4 guix-publish-DESKTOP _guix_publish._tcp local
+ lo IPv4 guix-publish-DESKTOP _guix_publish._tcp local
+ enp7s0 IPv6 LAPTOP _ssh._tcp local
+ enp7s0 IPv6 DESKTOP _ssh._tcp local
+ enp7s0 IPv4 LAPTOP _ssh._tcp local
+ enp7s0 IPv4 DESKTOP _ssh._tcp local
+ lo IPv4 DESKTOP _ssh._tcp local
+ enp7s0 IPv6 LAPTOP [2a:81:b6:9b:6b:88] _workstation._tcp local
+ enp7s0 IPv6 DESKTOP [40:b0:76:0c:8d:47] _workstation._tcp local
+ enp7s0 IPv4 LAPTOP [2a:81:b6:9b:6b:88] _workstation._tcp local
+ enp7s0 IPv4 DESKTOP [40:b0:76:0c:8d:47] _workstation._tcp local
+ lo IPv4 DESKTOP [00:00:00:00:00:00] _workstation._tcp local
+ enp7s0 IPv6 LAPTOP _sftp-ssh._tcp local
+ enp7s0 IPv6 DESKTOP _sftp-ssh._tcp local
+ enp7s0 IPv4 LAPTOP _sftp-ssh._tcp local
+ enp7s0 IPv4 DESKTOP _sftp-ssh._tcp local
+ lo IPv4 DESKTOP _sftp-ssh._tcp local
--8<---------------cut here---------------end--------------->8---
The output never changes, regardless of my laptop going to sleep or not.
You said "check if the publish server disappears" but why would it since it's
running on my desktop, which is not put to sleep?
Misunderstanding? Forgive my ignorance about Avahi! :)
Cheers!
--
Pierre Neidhardt
https://ambrevar.xyz/
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^ permalink raw reply [flat|nested] 7+ messages in thread
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2020-12-17 17:40 bug#45302: Avahi substitute discovery keeps trying to ping unaccessible servers Pierre Neidhardt
[not found] ` <handler.45302.B.16082268462565.ack@debbugs.gnu.org>
2020-12-17 18:33 ` bug#45302: Acknowledgement (Avahi substitute discovery keeps trying to ping unaccessible servers) Pierre Neidhardt
2020-12-22 3:25 ` bug#45302: Avahi substitute discovery keeps trying to ping unaccessible servers Maxim Cournoyer
2020-12-22 9:45 ` Pierre Neidhardt
2021-01-11 13:24 ` Mathieu Othacehe
2021-01-18 11:14 ` Pierre Neidhardt
2021-01-26 10:53 ` Pierre Neidhardt
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