Hi Iosif, spot on, thanks a lot - problem solved for me, and reported upstream for Arch Linux (https://bugs.archlinux.org/task/76499).
Cheers,
Alex
On 11/9/22 13:44, Iosif Fettich wrote:
> Hi Alexander,
>
> here's what probably has bitten yoou:
>
> ---
>
> Date: Fri, 15 Apr 2022 11:45:54 -0700
> From: Craig Barratt <notificati...@github.com>
> Reply-To: backuppc/backuppc
> <reply+acuqqc7z3pzryrfattd534wam3x6fevbnhhepxx...@reply.github.com>
> To: backuppc/backuppc <backu...@noreply.github.com>
> Cc: Iosif Fettich <ifett...@netsoft.ro>, Mention <ment...@noreply.github.com>
> Subject: [backuppc/backuppc] Config write fails with Data::Dumper versions >=
> 2.182 (Issue #466)
> Parts/Attachments:
> 1 OK 11 lines Text
> 2 Shown 23 lines Text
> ----------------------------------------
>
>
> @ifettich [github.com] discovered that config file writing fails with
> Data::Dumper versions > 2.178 due to a typo in the Data::Dumper->new() call.
> The second argument is missing a qw() wrapper. This was benign up to around
> Data::Dumper version < 2.182, but some changes to the XS library since then
> expose the long-time bug in BackupPC.
>
> Because Data::Dumper is used in terse mode, there's no need to provide the
> variable name in the second argument. So the fix is to simply remove the 2nd
> argument. That fix is backward compatible with older versions of Data::Dumper.
>
> ---
>
> Hope this helps a little bit. Mosty probably updating your BackupPC to the
> corrected version is all you need to do (besides restoring the settings that
> you had in use....)
>
> Best regards,
>
> Iosif Fettich
>
>
>
>
>
>
> On Wed, 9 Nov 2022, Alexander Kobel wrote:
>
>> Dear all,
>>
>> I receive validation errors of my config file after changes to the (global)
>> config in the web interface. Consequently, BackupPC terminates.
>>
>> I'm absolutely sure that this worked before; my last (host) config change
>> dates back to Feb 2022, the last global config change happened mid 2020.
>> Unfortunately, I can't pinpoint a specific culprit (system) update anymore.
>> Normal operation is not affected, so I didn't spot the issue earlier; just
>> undoing the most recent perl-related updates from today's regular update
>> does not help.
>>
>> The issue is that upon changing the main config or, e.g., adding a host,
>> HASH or ARRAY entries in the config file are written with parentheses rather
>> than braces or brackets, as expected. In turn, I receive
>>
>>> Software error:
>>>
>>> Not an ARRAY reference at /usr/share/backuppc/lib/BackupPC/CGI/Lib.pm line
>>> 468.
>>
>> or similar messages on operations that re-read the config, accompanied by
>> crashes of the server. Attached is a diff of the config folder, with entries
>> like
>>
>> 2431c2431
>> < $Conf{ClientShareName2Path} = {};
>> ---
>>> $Conf{ClientShareName2Path} = ();
>> 2433c2433
>> < $Conf{RsyncIncrArgsExtra} = [];
>> ---
>>> $Conf{RsyncIncrArgsExtra} = ();
>>
>> I can fix the config manually and the server starts again; however, I'm not
>> 100% confident whether some log/configuration data is written periodically,
>> e.g. on nightlies, and more dragons hide behind the scenes.
>>
>> Did anyone experience a similar problem? Any know incompatibilities with one
>> of the more recent perl packages? Any clues what might be the problem?
>>
>> For context, I'm on Arch, pretty much up-to-date; relevant versions of
>> BackupPC, web server and dependencies are
>>
>> backuppc 4.4.0-5
>> lighttpd 1.4.67-1
>>
>> glibc 2.36-6
>> popt 1.18-3
>> perl 5.36.0-1
>> par2cmdline 0.8.1-2
>> perl-archive-zip 1.68-7
>> perl-io-dirent 0.05-15
>> perl-file-listing 6.15-2
>> perl-time-modules 2013.0912-8
>> perl-cgi 4.54-2
>> perl-xml-rss 1.62-1
>> perl-json-xs 4.03-3
>> postfix 3.7.3-2
>>
>>
>> Thanks and cheers,
>> Alex
>
>
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