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Node is out of CLAM quorum due to  cluster network disruption

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Applies to

  • ONTAP 9
  • Broadcom BES-53248 switch purchased from NetApp

Issue

  • A CLAM panic occurs on one of the nodes.
PANIC : Received PANIC packet from partner, receiving message is (Coredump and takeover initiated because Connectivity, Liveliness and Availability Monitor (CLAM) has determined this node is out of quorum.)
  • cluster ports on panic node（FAS8200) connects to BES-53248 switches with 10G speed
  • cluster ports on nodes of FAS8700 connects to BES-53248 switches with 100G speed
  • Massive vifmgr.cluscheck.ctdpktloss alerts would be observed before panic

[?] Mon Aug 22 12:49:18 +0800 [PERPIS-02: vifmgr: vifmgr.cluscheck.ctdpktloss:alert]: Continued packet loss when pinging from cluster lif PERPIS-02_clus1 (node PERPIS-02) to cluster lif PERPIS-01_clus1 (node PERPIS-01).
[?] Mon Aug 22 12:49:40 +0800 [PERPIS-02: vifmgr: vifmgr.cluscheck.ctdpktloss:alert]: Continued packet loss when pinging from cluster lif PERPIS-02_clus2 (node PERPIS-02) to cluster lif PERPIS-13_clus1 (node PERPIS-10).
[?] Mon Aug 22 12:50:46 +0800 [PERPIS-02: vifmgr: vifmgr.cluscheck.ctdpktloss:alert]: Continued packet loss when pinging from cluster lif PERPIS-02_clus2 (node PERPIS-02) to cluster lif PERPIS-12_clus2 (node PERPIS-09).
[?] Mon Aug 22 12:51:08 +0800 [PERPIS-02: vifmgr: vifmgr.cluscheck.ctdpktloss:alert]: Continued packet loss when pinging from cluster lif PERPIS-02_clus2 (node PERPIS-02) to cluster lif PERPIS-11_clus1 (node PERPIS-08).
[?] Mon Aug 22 12:51:30 +0800 [PERPIS-02: vifmgr: vifmgr.cluscheck.ctdpktloss:alert]: Continued packet loss when pinging from cluster lif PERPIS-02_clus2 (node PERPIS-02) to cluster lif PERPIS-11_clus2 (node PERPIS-08).
[?] Mon Aug 22 12:51:52 +0800 [PERPIS-02: vifmgr: vifmgr.cluscheck.ctdpktloss:alert]: Continued packet loss when pinging from cluster lif PERPIS-02_clus2 (node PERPIS-02) to cluster lif PERPIS-10_clus1 (node PERPIS-07).
[?] Mon Aug 22 12:52:36 +0800 [PERPIS-02: vifmgr: vifmgr.cluscheck.ctdpktloss:alert]: Continued packet loss when pinging from cluster lif PERPIS-02_clus2 (node PERPIS-02) to cluster lif PERPIS-04_clus1 (node PERPIS-04).
[?] Mon Aug 22 12:53:42 +0800 [PERPIS-02: vifmgr: vifmgr.cluscheck.ctdpktloss:alert]: Continued packet loss when pinging from cluster lif PERPIS-02_clus2 (node PERPIS-02) to cluster lif PERPIS-03_clus2 (node PERPIS-03).
[?] Mon Aug 22 12:54:26 +0800 [PERPIS-02: vifmgr: vifmgr.cluscheck.ctdpktloss:alert]: Continued packet loss when pinging from cluster lif PERPIS-02_clus2 (node PERPIS-02) to cluster lif PERPIS-06_clus2 (node PERPIS-06).
[?] Mon Aug 22 12:54:49 +0800 [PERPIS-02: vifmgr: vifmgr.cluscheck.ctdpktloss:alert]: Continued packet loss when pinging from cluster lif PERPIS-02_clus2 (node PERPIS-02) to cluster lif PERPIS-05_clus1 (node PERPIS-05).

  • SW ports associating with FAS8200 nodes have massive account of OutDropPkts and InDropPkts

Port             OutOctets     OutUcastPkts     OutMcastPkts     OutBcastPkts      OutDropPkts         Tx Error

--------- ---------------- ---------------- ---------------- ---------------- ---------------- ----------------

0/1        135350867555820      30454105411         10640954          1174996             8160                0

0/2       1115535865614836     153716964951         10640974          1155040           244502                0

0/3        555253727068245     114123567719         10640914          1171842            19740                0

0/4        110609817174084      27294584348         10640974          1175446                7                0

0/5        324792975891383      52311649051         10640974          1175338            14560                0

0/6          4499554844182       7764219226         10640974          1176497                0                0

 

Port              InOctets      InUcastPkts      InMcastPkts      InBcastPkts       InDropPkts         Rx Error

--------- ---------------- ---------------- ---------------- ---------------- ---------------- ----------------

0/1        184812820859850      31934228208           760131            26093                0                0

0/2        236905412197034      81900354370           760111            46049                1                0

0/3        828708576199875     126752545891           760107            29233           167068                0

0/4        259526455231231      38692873350           760111            25643           124437                0

0/5        200243275302091      40098210067           760110            25751                0                0

0/6         82902559324186      12919563869           760110            24592                0                0

  • Default Qos setting on BES-53248 switches via RCF1.6

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