Bug 1728896

Summary:	glib2: 'keyfile' backend for gsettings not loaded
Product:	Red Hat Enterprise Linux 8	Reporter:	Marco Benatto <mbenatto>
Component:	glib2	Assignee:	Michael Catanzaro <mcatanza>
Status:	CLOSED ERRATA	QA Contact:	Michael Boisvert <mboisver>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	8.0	CC:	mbenatto, mboisver, mclasen, tpelka
Target Milestone:	rc
Target Release:	8.4
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	glib2-2.56.4-9.el8	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-05-18 14:38:09 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1728727, 1728730
Bug Blocks:

Description Marco Benatto 2019-07-10 21:44:32 UTC

Description of problem:
It seems libgio is not correctly loading 'keyfile' module to provide
key-value configuration file support.


Version-Release number of selected component (if applicable):
glib-2.56.1-el7

How reproducible:
Always

Steps to Reproduce:
$ GSETTINGS_BACKEND=keyfile gsettings set org.gnome.desktop.thumbnail-cache maximum-size 10

(process:7779): GLib-GIO-WARNING **: 17:38:31.640: Can't find module 'keyfile' specified in GSETTINGS_BACKEND
GLib-GIO-Message: 17:38:31.640: Using the 'memory' GSettings backend.  Your settings will not be saved or shared with other applications.


Actual results:
keyfile module is not found

Expected results:
configuration should be stored on properly format without any issue.

Additional info:
Upstream report for this issue

https://gitlab.gnome.org/GNOME/glib/issues/1822

Comment 7 Michael Catanzaro 2020-11-10 20:01:45 UTC

(In reply to Marco Benatto from comment #0)
> Expected results:
> configuration should be stored on properly format without any issue.
> 
> Additional info:
> Upstream report for this issue
> 
> https://gitlab.gnome.org/GNOME/glib/issues/1822

I looked into this yesterday. Setting the keyfile backend as the default backend is only supposed to work in glib 2.60 and newer. We have glib 2.56 in RHEL 8, so it's not expected to work.

However, we actually do want to support this in RHEL 8.4, because we want to create RHEL flatpak runtimes, and for that we need glib in the runtime to support the keyfile backend. This is only useful in combination with support for the settings portal. I will try to backport all of the above, and we'll see how it goes.

Comment 9 Michael Catanzaro 2020-11-10 21:35:15 UTC

(In reply to Marco Benatto from comment #0)
> Steps to Reproduce:
> $ GSETTINGS_BACKEND=keyfile gsettings set org.gnome.desktop.thumbnail-cache
> maximum-size 10
> 
> (process:7779): GLib-GIO-WARNING **: 17:38:31.640: Can't find module
> 'keyfile' specified in GSETTINGS_BACKEND
> GLib-GIO-Message: 17:38:31.640: Using the 'memory' GSettings backend.  Your
> settings will not be saved or shared with other applications.

Alternative reproducer that doesn't modify any settings, for QA:

$ GSETTINGS_BACKEND=keyfile gsettings get org.gnome.desktop.thumbnail-cache maximum-size

Comment 13 Michael Boisvert 2021-01-26 13:12:02 UTC

Testing glib2-2.56.4-9.el8 using the provided reproducers, I can see that the keyfile module is being properly loaded to provide the key-value configuration.

Comment 15 errata-xmlrpc 2021-05-18 14:38:09 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Moderate: GNOME security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2021:1586