PowerFlex: SDS의 지속적인 분리 MTU 불일치

vCenter에 대한 업데이트가 실패했고 새 vCenter 인스턴스가 배포되었습니다. 기존 SVM을 새 vCenter에 추가한 다음 새로 생성된 DVS(Distributed Virtual Switch)에 추가했습니다. 이 작업이 완료된 후 한 SDS가 계속해서 분리됨/연결 해제됨 상태로 전환됨 SDS가 연결 해제됨, 가입 보류 중으로 scli --query_all_sds 출력:

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

MDM 이벤트 로그에는 SDS가 지속적으로 분리되고 냉각 모드로 전환되었다가 다시 연결되는 과정이 표시됩니다.

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

MDM 추적 로그는 통신하는 데 문제가 있는 SDS를 보여줍니다. SDS를 연결하는 중이다가 연결을 끊는 경우:

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

이는 ScaleIO 문제가 아니라 ESXi 네트워크 구성 문제입니다.

DVS(Distributed Virtual Switch) 업링크를 편집하고 모든 네트워크 MTU 설정과 일치하도록 MTU 크기를 9000으로 설정합니다.
네트워크 경로의 모든 구성 요소가 9000 MTU로 설정되어 있는지 확인합니다.