Backup KO Ubuntu 22.04 ARM

Help with Setup/Upgrade
1

Hi
I’va installed MIAB on Ubuntu 22.04 on ARM system
Everything works fine except backup

GPGError: GPG Failed, see log below:
===== Begin GnuPG log =====
gpg: Note: ‘–force-mdc’ is not considered an option
gpg: Note: ‘–symmetric’ is not considered an option
gpg: WARNING: no command supplied. Trying to guess what you mean …
usage: gpg [options] [filename]
===== End GnuPG log =====

Traceback (most recent call last):
File “/root/mailinabox/management/backup.py”, line 648, in
perform_backup(full_backup)
File “/root/mailinabox/management/backup.py”, line 317, in perform_backup
shell(‘check_call’, [
File “/root/mailinabox/management/utils.py”, line 127, in shell
ret = getattr(subprocess, method)(cmd_args, **kwargs)
File “/usr/lib/python3.10/subprocess.py”, line 369, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command ‘[’/usr/bin/duplicity’, ‘full’, ‘–verbosity’, ‘warning’, ‘–no-print-statistics’, ‘–archive-dir’, ‘/miab/backup/cache’, ‘–exclude’, ‘/miab/backup’, ‘–volsize’, ‘250’, ‘–gpg-options’, “‘–cipher-algo=AES256’”, ‘–allow-source-mismatch’, ‘/miab’, ‘file:///miab/backup/encrypted’]’ returned non-zero exit status 31.

I think this is the problem:

duplicity --version

duplicity 0.8.21

Any idea how to solve the issue please?

2

If you search “ arm duplicity backup” you immediately find the answer.
The version od duplicity is not compatible

3

You seem to be running an arm64 instance. Duplicity is not updated on arm.
Install the latest version from snap like this: You have to repeat the steps after each update.

4

Worked like a charm!
Thank you

5

Curious question - did you have to install libffi-dev manually? (That used to be required.)

6

ubuntu-ports jammy/main arm64 Packages

 apt-cache policy libffi-dev
libffi-dev:
  Installed: (none)
  Candidate: 3.4.2-4
  Version table:
     3.4.2-4 500
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7

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