PowerFlex: Desacoplamento contínuo de incompatibilidade de MTU do SDS

Uma atualização do vCenter apresentou falha e uma nova instância do vCenter foi implementada. As SVMs existentes foram adicionadas ao novo vCenter e, em seguida, ao DVS (switch virtual distribuído) recém-criado. Depois que isso foi concluído, um SDS continuou a entrar em um estado desacoplado/desconectado O SDS está sendo exibido como desconectado, Join-Pending no scli --query_all_sds saída:

SDS ID: b7g3bd870000000aName: SIO-ESX1 State: Disconnected, Join-Pending IP: 172.21.55.110 Port: 7072 Version: 2.0.13000

O registro de eventos do MDM mostra a dissociação contínua do SDS, entrando no modo de resfriamento e, em seguida, reconectando.

2017-10-09 12:35:53.155 SDS_DECOUPLED ERROR SDS: SIO-ESX1 (id b7g3bd870000000a) decoupled. 2017-10-09 12:35:53.156 SDS_IN_COOL_DOWN WARNING 
SDS: SIO-ESX1 (ID b7g3bd870000000a) will disconnect from MDM for 15 seconds failed to reconnect multiple times 2017-10-09 12:36:08.155 
SDS_RECONNECTED INFO SDS: SIO-ESX1 (ID b7g3bd870000000a) reconnected 2017-10-09 12:36:13.161 SDS_RECONNECTED INFO SDS: SIO-ESX1 
(ID b7g3bd870000000a) reconnected 2017-10-09 12:36:18.255 SDS_RECONNECTED INFO SDS: SIO-ESX1 (ID b7g3bd870000000a) reconnected 
2017-10-09 12:36:23.259 SDS_RECONNECTED INFO SDS: SIO-ESX1 (ID b7g3bd870000000a) reconnected 2017-10-09 12:36:28.255 SDS_RECONNECTED 
INFO SDS: SIO-ESX1 (ID b7g3bd870000000a) reconnected ... 2017-10-09 12:38:41.153 SDS_DECOUPLED ERROR SDS: SIO-ESX1 (id b7g3bd870000000a) 
decoupled. 2017-10-09 12:38:41.155 SDS_IN_COOL_DOWN WARNING SDS: SIO-ESX1 (ID b7g3bd870000000a) will disconnect from MDM for 15 seconds
 failed to reconnect multiple times 2017-10-09 12:38:56.159 SDS_RECONNECTED INFO SDS: SIO-ESX1 (ID b7g3bd870000000a) reconnected
 2017-10-09 12:39:01.164 SDS_RECONNECTED INFO SDS: SIO-ESX1 (ID b7g3bd870000000a) reconnected 2017-10-09 12:39:06.260 SDS_RECONNECTED 
INFO SDS: SIO-ESX1 (ID b7g3bd870000000a) reconnected 2017-10-09 12:39:11.265 SDS_RECONNECTED INFO SDS: SIO-ESX1 (ID b7g3bd870000000a) 
reconnected

Os logs de rastreamento do MDM mostram o SDS com problemas de comunicação. O SDS está se conectando e, em seguida, desconectando:

09/10 12:39:11.261955 0x7f66b2a32eb0:tgtMgr_CheckMsgReturnedRC:01728: Message RC is TIMEOUT, RC is COMMUNICATION_ERROR 09/10 12:39:11.261972
 0x7f66b2a32eb0:tgtMgr_ConfigureTgt:05190: TGT_CONFIG Failed to update new TGT b9f3bd870000000a on all other TGTs RC: COMMUNICATION_ERROR
 09/10 12:39:11.261981 0x7f66b2a32eb0:tgtMgr_ProcessComplete:07188: Tgt: b7g3bd870000000a RC=COMMUNICATION_ERROR type: UP upDownState: 
DOWN processState: UP_INPROGRESS mdmTgtConGen: 51897 upPend: 1 downPend: 0 devErrPend: 0 wasDown: 1 createIP: 0 reconstructIP: 0 09/10
 12:39:11.261994 0x7f66b2a32eb0:keepalive_SetTgtFenced:00331: TGT: b7g3bd870000000a 09/10 12:39:11.262015 0x7f66b0902eb0:repExtent_IO:02976:
 Writing the repository to disk and cluster. Extent: 0 Page: 186 Offset: 761856 Size: 65536 09/10 12:39:11.263420 
0x7f66b2a32eb0:tgtMgr_InitiateProcessUnlocked:07027: Tgt: b7g3bd870000000a processType: UP upDownState: DOWN processState: IDLE 
mdmTgtConGen: 51897 upPending: 0 downPending: 0 wasDown: 1 createIP: 0 reconstructIP: 0 aboutToBeRemoved: 0 09/10 12:39:11.263472
 0x7f66b2a71eb0:tgtMgr_HandleWorkReq:04511: TgtId: b7g3bd870000000a starting Up process 09/10 12:39:11.263488 0x7f66b0926eb0:
repExtent_IO:02976: Writing the repository to disk and cluster. Extent: 0 Page: 186 Offset: 761856 Size: 65536 09/10 12:39:11.264680 
0x7f66b2a71eb0:keepalive_SetTgtListenOnly:00377: TGT: b7g3bd870000000a 09/10 12:39:11.264689 0x7f66b2a71eb0:mdmTgtMsg_SendSyncAddMdm:00505
: TGT_CONFIG TgtId: b7g3bd870000000a MdmId: 47e9330a1b66a52e mdmTgtConnectionGenNum: 51898 bForceClean: 0 bQuiesce: 0 quiesceGen: 1 
09/10 12:39:11.265081 0x7f66b2a71eb0:mosEventLog_PostInternal:00590: New event added. Message: "SDS: SIO-ESX (ID b7g3bd870000000a) 
reconnected". Additional info: "" Severity: Info 09/10 12:39:11.265091 0x7f66b2a71eb0:mdmTgtMsg_SendReconfStart:00571: TGT_CONFIG 
TgtId: b7g3bd870000000a

Esse não é um problema do ScaleIO, mas sim de configuração de rede do ESXi.

Edite o uplink DVS (distributed virtual switch) e defina o tamanho da MTU como 9000 para ser consistente com todas as configurações de MTU da rede.
Verifique se todos os componentes do caminho de rede estão definidos como 9000 MTU.