IT31890: STORAGE INSIGHTS CUSTOM ALERTS WITH MULTIPLE CONDITIONS MAY NOT TRIGGER DEPENDING ON THE ALERT SEQUENCE

IBM Spectrum Control 5.3.7 (May 2020)

APAR status

• Closed as program error.

Error description

• DETAIL OF PROBLEM:
  A defect exists where the order in which
  alert condition members are selected, affects whether or not
  the alert will ever be triggered.
  In an observed case:
  Some
  custom alerts were defined for the same Host+Pool+Nodes
  combination and different Performance metrics:
  response_time
  io_
  rate
  data_rate
  read_data_rate
  write_data _rate
  peak_response
  time
  The important part to notice is that the custom alert
  (with several conditions defined on related resources), it will
  trigger when the alert is defined from higher to lower resource
  members like this:
  1. Nodes
  2. Pool
  3. Host Connection
  Whereas
  the same alert does not trigger when the same conditions are
  combined but in the reverse order, from lower to higher
  resource:
  1. Host Connection
  2. Pool
  3. Nodes
  RECREATE
  STEPS:
  Observe alerts not triggering when resources are ordered
  in certain ways, but will trigger when ordered in other
  ways.
  Problem as described by customer:
  Storage Insights custom
  alert with multiple conditions not triggering.
  Initial customer
  impact (low/med/high): low
  

Local fix

• N/A. Fix to come in later release.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * IBM Spectrum Control & Storage Insights users with alerts    *
  * based on multiple conditions not triggering                  *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * Spectrum Control & Storage Insights users who have           *
  * configured a custom alert with multiple PM alert conditions  *
  * for the internal resources, all related to each other, may   *
  * not trigger depending of the alert members sequence or       *
  * combination.                                                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

• The fix for this APAR is targeted for the following release:
  
  IBM Storage Insights 2Q20   [ 5.3.7-IBM-SC ]
  IBM Spectrum Control 5.3.7   [ 5.3.7-IBM-SC ]
  
  ( release target 2Q 2020 / May )
  
  http://www.ibm.com/support/docview.wss?&uid=swg21320822
  
  The target dates for future releases do not represent a formal
  commitment by IBM. The dates are subject to change without
  notice.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  STORAGE INSIGHT

• Fixed component ID

  5608TPCSI

Applicable component levels

• R535 PSY

     UP

• R536 PSY

     UP