Bug 1413388

Summary:	journalctl "Journal file uses an unsupported feature"
Product:	[Fedora] Fedora	Reporter:	Alan Hamilton <alanh>
Component:	systemd	Assignee:	systemd-maint
Status:	CLOSED DUPLICATE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	25	CC:	ajschult784, edgar.hoch, joachim.backes, johannbg, jsynacek, lnykryn, mark, msekleta, muadda, robert.adesam, ssahani, s, systemd-maint, zbyszek
Target Milestone:	---
Target Release:	---
Hardware:	x86_64
OS:	Linux
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Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-01-16 11:56:20 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:

Description Alan Hamilton 2017-01-15 16:57:26 UTC

Description of problem:
When running journalctl, a warning appears similar to
Journal file /var/log/journal/fe39ba83b9244251b1704fc655fbff2f/user-1001 uses an unsupported feature, ignoring file.

Version-Release number of selected component (if applicable):
systemd-231-11.fc25.x86_64


How reproducible:
Always

Steps to Reproduce:
1. Run journalctl, with most options. journalctl --verify shows it.

Actual results:
Journal file /var/log/journal/fe39ba83b9244251b1704fc655fbff2f/user-1001 uses an unsupported feature, ignoring file.

Expected results:
No warnings.

Additional info:
The warning indicates the file is using compression that journalctl doesn't recognize. journalctl in this package appears to have been built without LZ4 support.

From systemd-231-10.fc25.x86_64
$ journalctl --version
systemd 231
+PAM +AUDIT +SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN

From systemd-231-11.fc25.x86_64
$ journalctl --version
systemd 231
+PAM +AUDIT +SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN

Note the "-LZ4".

Comment 1 Joachim Backes 2017-01-16 11:43:01 UTC

Seeing this too, if simply running "journalctl"

journalctl
Journal file /var/log/journal/8e494e07f3a7423b8ac7661fff29d5ca/system uses an unsupported feature, ignoring file.
-- No entries --

Comment 2 Joachim Backes 2017-01-16 11:45:47 UTC

(In reply to Joachim Backes from comment #1)
> Seeing this too, if simply running "journalctl"
> 
> journalctl
> Journal file
> /var/log/journal/8e494e07f3a7423b8ac7661fff29d5ca/
> system@b100186ab24446dfb33dcac51eb22c4d-0000000000000001-000532f5dc539aa5.
> journal uses an unsupported feature, ignoring file.
> -- No entries --

Forgotten:

journalctl --version
systemd 231
+PAM +AUDIT +SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN

Comment 3 Joachim Backes 2017-01-16 11:55:53 UTC

(In reply to Joachim Backes from comment #2)
> (In reply to Joachim Backes from comment #1)
> > Seeing this too, if simply running "journalctl"
> > 
> > journalctl
> > Journal file
> > /var/log/journal/8e494e07f3a7423b8ac7661fff29d5ca/
> > system@b100186ab24446dfb33dcac51eb22c4d-0000000000000001-000532f5dc539aa5.
> > journal uses an unsupported feature, ignoring file.
> > -- No entries --
> 
> Forgotten:
> 
> journalctl --version
> systemd 231
> +PAM +AUDIT +SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP
> +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN

After downgrading systemd to systemd-231-10.fc25.x86_64, journalctl works properly :-)

Comment 4 Jan Synacek 2017-01-16 11:56:20 UTC

I'm working on it.

*** This bug has been marked as a duplicate of bug 1404406 ***