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EIO error - I/O error

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  EIO error - I/O error Rachid Oubelk <rachid.oubelk@elum-energy.com> - 2023-12-11 16:10 +0100
    Re: EIO error - I/O error Marco Moock <mm@dorfdsl.de> - 2023-12-11 16:10 +0100
    Re: EIO error - I/O error Marco Moock <mm@dorfdsl.de> - 2023-12-11 16:50 +0100
    Re: EIO error - I/O error Michael Kjörling <2695bd53d63c@ewoof.net> - 2023-12-11 18:00 +0100

#264632 — EIO error - I/O error

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Dear support team,


Please, we are using Debian GNU/Linux 9.13 (stretch) installed on a
UC-8112-LX controller version 3.4, and it shows the error EIO  ( IO error
).

Could you please help us understand the cause of this error? Very urgent.

Best regards,

<https://elum-energy.com/>

Rachid OUBELK

Technical Support Engineer

Customer Service

Elum Energy

rachid.oubelk@elum-energy.com

21 Rue Bapaume, Casablanca, Morocco

elum-energy.com

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#264633

Am 11.12.2023 um 15:46:03 Uhr schrieb Rachid Oubelk:

> Please, we are using Debian GNU/Linux 9.13 (stretch) installed on a
> UC-8112-LX controller version 3.4, and it shows the error EIO  ( IO
> error ).

Where does that error message appear?
In which application?

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#264641

Am 11.12.2023 um 16:39:47 Uhr schrieb Rachid Oubelk:

> We received this message from our software based on the errno utility
> (Linux Errors). The Debian used is installed on a controller that has
> two serial ports (RTU) and two LAN ports (TCP). When we test these
> two serial ports, we notice this error.

Can you connect the serial port to a computer and rund minicom to see
the tty?
Does that work?

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#264648

On 11 Dec 2023 15:46 +0100, from rachid.oubelk@elum-energy.com (Rachid Oubelk):
> Dear support team,

A clarification; this mailing list is not a "support team". It's a
group of people, many of which who share little more than the fact
that they use Debian to varying degree, and with varying levels of
experience and expertise.

You should treat any response you get from this list accordingly, and
know that nobody here is under any obligation. If you are running
mission-critical applications on Debian, you may want to investigate
paid support through some company which provides that service.

_That said,_


> Please, we are using Debian GNU/Linux 9.13 (stretch) installed on a
> UC-8112-LX controller version 3.4,

I am not familiar with the UC-8112-LX controller. Also note that
Debian 9 receives very limited updates by now, being on ELTS since
mid-2022.

> and it shows the error EIO  ( IO error
> ).
>
> Could you please help us understand the cause of this error? Very urgent.

_Usually_ an I/O error is caused by a storage-level problem such as a
sector read error from which the storage device could not recover by
using the error-correcting data stored on it. You should see more
detailed information in the kernel logs; check /var/log/syslog (exact
locations can vary depending on your syslogd configuration) and the
output of dmesg (may have been rotated out, especially if the system
has been rebooted) for a period around the time of the error.

-- 
Michael Kjörling                     🔗 https://michael.kjorling.se
“Remember when, on the Internet, nobody cared that you were a dog?”

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