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Cleanup #50799

mgr/dashboard: misleading OSD IO line charts when OSD down

Added by Ernesto Puerta about 1 month ago. Updated about 1 month ago.

Status:
Need More Info
Priority:
Normal
Category:
Component - OSDs
Target version:
% Done:

0%

Tags:
Backport:
Reviewed:
Affected Versions:
Pull request ID:

Description

When an OSD is down, the IO line/area chart should either be flat or made explicit that it contains stale data (frozen, grayed out, ...).

Ideas for detecting when data is no longer valid:

  • This data comes from a short time-series that ceph-mgr provides. One possibility is to explore if the ceph-mgr provides timestamp for each datapoint.
  • Alternatively, if OSD status is down/etc., consider the current data as stale.
How to visually display this:
  • offseting/sliding the valid data out of the chart window, and replace it with 'empty data' (gray points? no points?) as time goes by.
  • Turn the whole chart grayed out/blinking/etc.

misleading_io_chart.png View (119 KB) Ernesto Puerta, 05/13/2021 09:43 AM

History

#1 Updated by Ernesto Puerta about 1 month ago

  • Assignee set to Aashish Sharma

#2 Updated by Ernesto Puerta about 1 month ago

  • Tracker changed from Bug to Cleanup

#3 Updated by Ernesto Puerta about 1 month ago

  • Status changed from New to Need More Info
  • Backport deleted (pacific,octopus,nautilus)

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