Bug 1847925

Summary:	Option "T" is showing the next sample and not the previous one as in pcp-atop man page
Product:	Red Hat Enterprise Linux 8	Reporter:	Rupesh Girase <rgirase>
Component:	pcp	Assignee:	Nathan Scott <nathans>
Status:	CLOSED ERRATA	QA Contact:	Jan Kurik <jkurik>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	8.4	CC:	agerstmayr, jkurik, mgoodwin, nathans, nkshirsa, patrickm, pmahale
Target Milestone:	rc	Keywords:	Bugfix, Triaged
Target Release:	8.4	Flags:	pm-rhel: mirror+
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	pcp-5.2.0	Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-05-18 15:19:32 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:

Description Rupesh Girase 2020-06-17 11:07:27 UTC

Description of problem:

 Option "T" is showing the next sample and not the previous one as per man page in pcp-atop man page

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

RHEl-7.5

How reproducible:

always

Steps to Reproduce:

Use either of the command to read pcp data,

1. pcp -a /var/log/pcp/pmlogger/rgirase.pnq.csb/20200612.09.25.0 atop

OR

1. pcp -t 1s atop -r /var/log/pcp/pmlogger/rgirase.pnq.csb/20200612.09.25.0

2. Then press "T" to see previous sample


Actual results:

It shows next sample


Expected results:

It should show previous sample


Additional info:

Thanks nkshirsa++ for verifying it.

man page says: https://man7.org/linux/man-pages/man1/pcp-atop.1.html

      T    When viewing the contents of an archive folio, this key can be
            used to show the previous sample from the folio.

Comment 2 Nathan Scott 2020-06-17 12:15:10 UTC

Moving to RHEL-8 as this issue won't meet the requirements for RHEL-7 development.

Comment 3 Nathan Scott 2020-07-22 07:48:04 UTC

This is fixed upstream via the following commit:

commit d3011a416e318697ee1a7c9d406e4766b2ee3cd7
Author: Nathan Scott <nathans>
Date:   Wed Jul 22 17:45:32 2020 +1000

    pcp-atop: implement several RFEs relating to time navigation
    
    Adds interactive mode (i) in atop for changing time interval.
    Adds the branch (b) to certain time feature in atop.
    
    Fixes option 'T' for stepping backward one sample in time and
    also enables 'k' option for localhost contexts.
    
    Resolves Red Hat BZs 1806824, 1847925 and 1806927.

Comment 15 errata-xmlrpc 2021-05-18 15:19:32 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 (pcp 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-2021:1754