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Bug 1794337 - man tuned-adm should also contain the option of activating two or more tuned profiles
Summary: man tuned-adm should also contain the option of activating two or more tuned ...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: tuned
Version: 8.0
Hardware: Unspecified
OS: Linux
unspecified
medium
Target Milestone: rc
: 8.0
Assignee: Jaroslav Škarvada
QA Contact: Robin Hack
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-01-23 10:33 UTC by Bernd Finger
Modified: 2020-11-04 02:07 UTC (History)
4 users (show)

Fixed In Version: tuned-2.14.0-0.1.rc1.el8
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-11-04 02:03:07 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Github redhat-performance tuned pull 242 0 None closed man: Document the possibility to apply more than one profile 2020-10-15 09:22:24 UTC
Red Hat Product Errata RHBA-2020:4559 0 None None None 2020-11-04 02:03:27 UTC

Description Bernd Finger 2020-01-23 10:33:33 UTC 
Description of problem:
man tuned-adm just mentions one possible argument to option "profile". However, it is possible to specify more than one profile, causing settings from previous profiles to be replaced by settings from further profiles.

Version-Release number of selected component (if applicable):
tuned-2.10.0-14.el8.noarch, tuned-2.13.0-1.el8.noarch

How reproducible:
always

Steps to Reproduce:
1. man tuned-adm 
2. Check the contents of sections SYNOPSIS and OPTIONS
3. Confirm that there is just one argument mentioned to option "profile"

Actual results:
SYNOPSIS
       tuned-adm [list | active | profile [profile] | off | verify | recommend]
       active Show current active profile.
...
OPTIONS
...
       profile [PROFILE_NAME]
              Switches to the given profile. If none is given then all
              available profiles are listed. If the profile given is not valid
              the command gracefully exits without performing any operation.


Expected results:
SYNOPSIS
       tuned-adm [list | active | profile [profile]... | off | verify | 
       recommend]
       active Show current active profile(s).
...
OPTIONS
...
       profile [PROFILE_NAME]...
              Switches to the given profile(s). If none is given then all
              available profiles are listed. If more than one profile is
              provided, settings in all these profiles are used and 
              settings in the additional profiles replace those from former
              ones if present. If the profiles given are not valid, the command
              gracefully exits without performing any operation.

Additional info:
More changes in other sections might be necessary, for example in section verify.
Comment 1 Ondřej Lysoněk 2020-01-23 12:33:51 UTC 
Thanks for the report.

Upstream PR:
https://github.com/redhat-performance/tuned/pull/242
Comment 2 Bernd Finger 2020-01-23 15:51:02 UTC 
(In reply to Ondřej Lysoněk from comment #1)
> Thanks for the report.
> 
> Upstream PR:
> https://github.com/redhat-performance/tuned/pull/242

The proposed text in line 67 and 68 does not explain which one of the settings wins in case there are different settings for the same parameter(s) in two or more profiles. I suggest to explain this as well.
Just merging does not mean that the last one wins, or is that a common understanding of "merged" in this context?
Comment 3 Ondřej Lysoněk 2020-02-10 17:18:32 UTC 
(In reply to Bernd Finger from comment #2)
> (In reply to Ondřej Lysoněk from comment #1)
> > Thanks for the report.
> > 
> > Upstream PR:
> > https://github.com/redhat-performance/tuned/pull/242
> 
> The proposed text in line 67 and 68 does not explain which one of the
> settings wins in case there are different settings for the same parameter(s)
> in two or more profiles. I suggest to explain this as well.
> Just merging does not mean that the last one wins, or is that a common
> understanding of "merged" in this context?

I've updated the PR.
Comment 14 errata-xmlrpc 2020-11-04 02:03:07 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 (tuned 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/RHBA-2020:4559
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