Dell Unity: SP får panikk når begge administrasjonskablene fjernes/settes inn for raskt i samme periode

Summary: SP får panikk når begge administrasjonskablene fjernes/settes inn for raskt i samme periode. (Kan rettes opp av bruker)

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Symptoms

Noen ganger kan Unity SP få panikk når kunder bytter administrasjonskabler for raskt.

 

Cause

Hvis MGMT-komponenter som ECOM kjører på SPA, trekker vi ut kabelen fra SPA, komponenter vil være failover til SPB. Men før failoveren er fullført, hvis SPB-kabelen er trukket ut og SPA-kabelen er koblet til igjen. Da kan dette problemet utløses.

//spb/EMC/C4Core/logs/start_c4.log
Thu Jul 26 09:47:04 UTC 2018 carrier.sh: changing Connectivity state to 0
Thu Jul 26 09:48:05 UTC 2018 carrier.sh: changing Connectivity state to 1
Thu Jul 26 09:48:14 UTC 2018 peservice.sh: /EMC/fastvp is NOT  mounted, cannot start PEService.exe <========

Like start_c4.log above, after cable was pulled out from SPB at 2018-07-26 09:48:05 , some components were stopped while some not stopped at all, then cable was plugged in back.
Then non-stopped components never restarted, while those stopped components started to start like c4fastvpa. And the components which c4fastvpa depends on like c4loga and metricsluna never stopped in this process.
Ungraceful failover messed up the start-up sequence of components and may make SP panic.

 

Resolution

Denne mekanismen fungerer av design. Kunden bør ikke bytte nettverkskabel for raskt. Foreslå å vente 5-10 minutter før du bytter på en annen kabel.

 

Affected Products

Dell EMC Unity Family

Products

Dell EMC Unity Family
Article Properties
Article Number: 000052713
Article Type: Solution
Last Modified: 21 Nov 2025
Version:  3
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