Borg: "illegal instruction" on Raspberry Pi 1

[elya5]

I am running Raspian Wheezy on a Raspberry Pi 1. After installing and running borg on it, it simply shows me "Illegal Instruction" every time I execute the command. This is probably also the case for other armv6 chips.

[ThomasWaldmann]

How did you install it?

Please note that the wheel packages I made are for arm v7 (raspi 2) and were made on Debian/Raspian Jessie.

Can you post more information about how to reproduce?

[elya5]

I installed it using pip (sudo pip-3.2 install borgbackup). If it helps, I can also post the output of pip during the installation.
The lz4 lib had to be installed from backports as it is not available otherwise. To get the error message, I can simply run borg without any parameters.

[ThomasWaldmann]

Yes, please post full pip commandline and output.

[elya5]

Here is the output of the installation.

The "_Ungültiger Maschinenbefehl_" at the end is german for "_Invalid Instruction_"

[ThomasWaldmann]

Strange. Somehow this rather looks like a compiler error or some malfunctioning hardware.

Could someone else who owns a raspberry pi 1 please try to reproduce this?

[elya5]

To be more accurate: It is a Raspberry Pi 1 model B (with 512MB RAM and Ethernet).

[xor-gate]

Maybe it should be build with GDB mode and run under GDB to see what actually is happening there.

[ThomasWaldmann]

I'ld say "first reproduce it". If it can be reproduced, I'ld appreciate if @xor-gate helps with the debug build (didn't do that yet with C/Cython stuff).

[dragetd]

I am using and working on the netinstaller for raspbian https://github.com/debian-pi/raspbian-ua-netinst.
My RPi1 is using raspbian Jessie. I would also recommend using Jessie instead of Wheezy (eventho that is probably unrelated to your problem.)

I installed borg by building it with a dedicated user using the installation documentation for PIP, plus installing the dependencies:

### Borg installation ###
useradd --base-dir /opt --create-home --no-user-group --system --shell /bin/bash borg-build
apt-get install build-essential
apt-get install python3-dev
apt-get install libssl-dev openssl libacl1-dev libacl1 liblz4-dev liblz4-1
apt-get install --no-install-recommends python-pip
apt-get install --no-install-reocmmends virtualenv
# optional fuse, check recommends? #apt-get install libfuse-dev fuse pkg-config

virtualenv --python=python3 borg-env
source borg-env/bin/activate

## install Borg + Python dependencies into virtualenv
#pip install 'llfuse<0.41'  # optional, for FUSE support
#                           # 0.41 and 0.41.1 have unicode issues at install time
pip install borgbackup

# And then added it to path with root:
ln -s ./borg-env/bin/borg /usr/local/bin/borg

You should try if your python setup works at all. You could try creating a test-pything script:

#!/usr/bin/python3
print('Test')

chmod +x <file>
./<file>

My installation of borg works just as my python3 installation without problems. I cannot reproduce the issues reported.

-Draget

[ThomasWaldmann]

@dragetd so it is working flawlessly for you and you do not have the issue as seen in first post?

[elya5]

I tried to use a new Raspian Jessie image and it seems to work now.

[dragetd]

@elya5 did you install from 'http://ftp.debian.org/debian/ wheezy-backports main'?

liblz4 is indeed not available for wheezy. And Raspbian-wheezy does not provide wheezy-backports! So you have to compile the package for yourself. Debian ARM is based on the ARM7 instruction-set while the RPi1 needs ARM6. This is why Raspbian was created in the first place.

Using the package from debian wheezy-backports would explain why you got this error! I just tried it myself. apt-get installs liblz4-1 without complaining. Compiling and running borg ends in 'Illegal instruction'.

Mystery solved :)

[xor-gate]

Good job, maybe we should document this for people who want to run it on their Pi's :-). I think it is possible to setup a KVM Linux virtual machine to compile for raspberry but with more performance than the PI itself. Like this: https://gist.github.com/stefanozanella/4608873

[elya5]

@dragetd I did exactly that so we found my mistake. Thanks!

[cirelli94]

@dragetd Why did you use a dedicated user?
Thank you.

[dragetd]

I like to keep my systems as clean as possible. As useful as pip is, I really do not want it to spam my system with files.

So I am using pip, running as a dedicated user in a virtual env.

There is no reason why running it without the virtual env, other user or even root should make any difference.

[kgfathur]

@dragetd , I'm sorry, but I don't understand what's the solution of this mistery.

please help me.
I've just install opencv 3.2.0 with instruction from http://pklab.net/?id=392&lang=EN, but the problem :

• I can't using : import cv2
  that return : "illegal instruction", and then python interactive shell closed.
  NB: the other import work well, like : import numpy ang matplotlib
  cmake and make was built 100% succes for opencv, but some cmake options was edited

specs : Raspberry Pi 1 B, 512MB ARMv6
OS : Raspbian Jessie 8.0
python : python 2.7.9 and python 3.4.2 (both version with same error)

is that my raspberry don't support the opencv package?

sorry for my bad English
thank you

[ThomasWaldmann]

@kgfathur I've no idea why you installed opencv. borgbackup does not use that.

This issue tracker is about borgbackup only, so please keep your opencv / numpy / matplotlib issues elsewhere.