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EMS reports "Failover monitor: takeover disabled (unsynchronized log)" on MetroCluster FC

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fabric-interconnect-and-management-switches
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Applies to

  • MetroCluster FC
  • ONTAP 9
  • Data ONTAP 8

Issue

  • System is MetroCluster FC configuration.
  • FCVI has error and EMS reports error "takeover disabled (unsynchronized log)".

Example:

10/25/2020 17:23:12 SITExxxx01   ERROR         cf.fsm.takeoverByPartnerDisabled: Failover monitor: takeover of SITExxxx01 by SITExxxx02 disabled (unsynchronized log).
10/25/2020 17:23:18 SITExxxx02   ERROR         cf.fsm.takeoverByPartnerDisabled: Failover monitor: takeover of SITExxxx02 by SITExxxx01 disabled (unsynchronized log).

  • Takeover will be enable automatically in several seconds.

Example:

10/25/2020 17:23:23 SITExxxx01   NOTICE        cf.fsm.takeoverByPartnerEnabled: Failover monitor: takeover of SITExxxx01 by SITExxxx02 enabled
10/25/2020 17:23:23 SITExxxx02   NOTICE        cf.fsm.takeoverByPartnerEnabled: Failover monitor: takeover of SITExxxx02 by SITExxxx01 enabled

  • By porterrshow on swtich, there are lots of enc out and disc c3.

Example:

porterrshow        :
          frames      enc    crc    crc    too    too    bad    enc   disc   link   loss   loss   frjt   fbsy  c3timeout    pcs    uncor
       tx     rx      in    err    g_eof  shrt   long   eof     out   c3    fail    sync   sig                  tx    rx     err    err
 44:    2.7g 863.1m   0      0      0      0      0      0    443     46      0      0      8      0      0      0      0      2.6m   0
 45:  866.2m   3.6g   0      1      0      0      1      1    480      2      0      0     10      0      0      0      0      2.6m   0
 46:  309.1m   1.1g   0      0      0      0      0      0    205    367      0      0      8      0      0      0      0    742.2k   0
 47:    1.4g   1.4g   0      1      0      0      1      0    222     81      0      0      8      0      0      0      0      1.9m   0

  44  44   072c00   id    8G      Online      FC  LS E-Port  10:00:88:94:71:9f:74:24 "SITEA9000-BR620-4-01" (downstream)(Trunk master)
  45  45   072d00   id    8G      Online      FC  LS E-Port  (Trunk port, master is Port 44 )
  46  46   072e00   id    8G      Online      FC  LS E-Port  10:00:88:94:71:9f:74:24 "SITEA9000-BR620-4-01" (Trunk master)
  47  47   072f00   id    8G      Online      FC  LS E-Port  (Trunk port, master is Port 46 )

 

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