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Today's Topics:
1. rediscover cancelled: [IP] failed to return valid serial
(Mackie, Paul)
2. Re: rediscover cancelled: [IP] failed to return valid serial
(Oliver Gorwits)
--- Begin Message ---
Hi Netdisco experts…
Since upgrading yesterday to the latest version 2.088002, I have a huge number
of devices that are failing discovery with the following error:
“rediscover cancelled: 192.168.8.1 failed to return valid serial”
When I run via netdisco-do, the output confirms the same thing:
[1] 2025-09-02 12:13:00 debug snmp reader cache warm: [192.168.8.1]
[1] 2025-09-02 12:13:00 debug [192.168.8.1:161] try_connect with cached tag
default_v2_readonly
[1] 2025-09-02 12:13:00 debug [192.168.8.1:161] try_connect with v: 2, t: 0.2,
r: 0, class: SNMP::Info::Layer2::HP, comm: <hidden>
[1] 2025-09-02 12:13:01 debug ⬅ (error) rediscover cancelled: 192.168.8.1
failed to return valid serial
The web interface (based on previous discoveries) shows the correct serial
number.
I see this in the release notes for the 2.088001:
- revert mistaken field_protection should protect serial on new devices
Please could someone tell me what this new feature means, and if/how I can work
around it to restore discovery?
If I need to rollback the Netdisco version to 2.088000, will I also need to
restore the database from backup or is the schema unchanged?
Best regards,
Paul Mackie
Network & Cloud Solution Architect
GEA INTERNAL
--- End Message ---
--- Begin Message ---
Hi Paul
Sorry about that. I’ve just released a new version which reverts that
change, while it’s looked into.
(annoyingly this was a change to fix several bugs which introduced one
worse bug 😆)
Regards
Oliver.
On Tue, 2 Sep 2025 at 17:32, Mackie, Paul via netdisco-users <
[email protected]> wrote:
> Hi Netdisco experts…
>
> Since upgrading yesterday to the latest version 2.088002, I have a huge
> number of devices that are failing discovery with the following error:
>
> “rediscover cancelled: 192.168.8.1 failed to return valid serial”
>
>
>
> When I run via netdisco-do, the output confirms the same thing:
>
> [1] 2025-09-02 12:13:00 debug snmp reader cache warm: [192.168.8.1]
>
> [1] 2025-09-02 12:13:00 debug [192.168.8.1:161] try_connect with cached
> tag default_v2_readonly
>
> [1] 2025-09-02 12:13:00 debug [192.168.8.1:161] try_connect with v: 2, t:
> 0.2, r: 0, class: SNMP::Info::Layer2::HP, comm: <hidden>
>
> [1] 2025-09-02 12:13:01 debug ⬅ (error) rediscover cancelled: 192.168.8.1
> failed to return valid serial
>
>
>
> The web interface (based on previous discoveries) shows the correct serial
> number.
>
>
>
> I see this in the release notes for the 2.088001:
> - revert mistaken field_protection should protect serial on new devices
>
>
>
> Please could someone tell me what this new feature means, and if/how I can
> work around it to restore discovery?
>
> If I need to rollback the Netdisco version to 2.088000, will I also need
> to restore the database from backup or is the schema unchanged?
>
>
>
> Best regards,
>
> *Paul Mackie*
>
> *Network* *&* *Cloud Solution Architect*
>
>
> GEA INTERNAL
> _______________________________________________
> Netdisco mailing list
> [email protected]
> https://sourceforge.net/p/netdisco/mailman/netdisco-users/
--- End Message ---
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