Bug 2215304

Summary:	journalctl with grep and follow does not show new entries
Product:	[Fedora] Fedora	Reporter:	Thomas Clark <fedoraproject>
Component:	systemd	Assignee:	systemd-maint
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	38	CC:	dtardon, fedoraproject, filbranden, lnykryn, msekleta, ryncsn, systemd-maint, yuwatana, zbyszek
Target Milestone:	---	Keywords:	Regression, Triaged
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	systemd-253.7-1.fc38	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-07-19 03:14:23 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Thomas Clark 2023-06-15 13:13:17 UTC

Invoking journalctl using --grep and --follow results in an immediate output of events in reverse order, but no new events follow. This is a change in the most recent systemd update.

Reproducible: Always

Steps to Reproduce:
1.journalctl --grep=api --follow
2.
3.
Actual Results:  
Existing events are listed in reverse order, all the way back to the beginning, with no further output

Expected Results:  
Show only the most recent journal entries, and continuously print new entries as they are appended to the journal, as specified in the man page

Comment 1 Lukáš Nykrýn 2023-06-26 12:24:56 UTC

It seems to be fixed now upstream. So at least the next version of systemd should work fine.

Comment 2 David Tardon 2023-06-26 12:55:30 UTC

Regression from https://github.com/systemd/systemd-stable/commit/c4cdbb978f681e7356c6c6367c1730d156a6a4e0 .

Comment 3 Fedora Update System 2023-07-17 16:58:16 UTC

FEDORA-2023-b07a6a9665 has been submitted as an update to Fedora 38. https://bodhi.fedoraproject.org/updates/FEDORA-2023-b07a6a9665

Comment 4 Fedora Update System 2023-07-18 01:26:25 UTC

FEDORA-2023-b07a6a9665 has been pushed to the Fedora 38 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2023-b07a6a9665`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2023-b07a6a9665

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2023-07-19 03:14:23 UTC

FEDORA-2023-b07a6a9665 has been pushed to the Fedora 38 stable repository.
If problem still persists, please make note of it in this bug report.