Bug 89855

Summary: `journalctl /dev/sda` always shows empty log
Product: systemd Reporter: Chris Bainbridge <chris.bainbridge>
Component: generalAssignee: systemd-bugs
Status: RESOLVED FIXED QA Contact: systemd-bugs
Severity: normal    
Priority: medium    
Version: unspecified   
Hardware: Other   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:

Description Chris Bainbridge 2015-03-31 22:20:38 UTC
`man journalctl` says:

  Show all logs of the kernel device node /dev/sda:

           journalctl /dev/sda

But:

# journalctl /dev/sda
-- Logs begin at Tue 2015-03-31 11:57:43 BST, end at Tue 2015-03-31
14:43:04 BST. --
#

On both Debian Jessie and Fedora 21, the log is simply empty. Is this supposed to work yet? If not, it seems premature to give such an example in the man page. If it is supposed to work, then something is wrong with the current releases.
Comment 1 Lennart Poettering 2015-04-14 13:34:32 UTC
Yeah, this requires kernel support, that never materialized.

I removed the example from the man pages now, to make this less confusing.

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