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StorageGRID SG6160 reports Storage appliance storage connectivity degraded or unknown

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Applies to

  • NetApp StorageGRID
  • NetApp E-Series/SANtricity OS
  • SG6100/E4000

Issue

  • SG6100 uses a storage interconnect port 100 GbE, connected to 4x25GbE iSCSI breakout cable.
  • StorageGRID Grid Manager reports the following alert:
Storage appliance storage connectivity degraded
There is a problem with one or more connections between the compute controller and storage controller.
Or:

Unable to communicate with node

  • SANtricity System Manager > Hardware > Show Back of Shelf > Controller > Show Settings > Host Ports show port(s) DOWN.
  • In ASUP > storage-array-profile > controllers reports link status on affected port(s) as disconnected:
Host interface: iSCSI
Host Interface Card(HIC): Baseboard
Channel: 2 
Port: e0b
Link status: Disconnected     
  • In ASUP > state-capture-data.txt > ionShow99 > chall 0 reports no connection to affected port(s):

Executing ionShow(99,0,0,0,0,0,0,0,0,0) on controller B:
-> chall 0

chAll (Tick 0131460364) ==> 12/11/24-12:51:16
4000-B 08.81.00.02
.....Channels.....:...........Target...........:............Initiator..........:                          
             Link :ITN :..........IOs..........:ITN :............IOs...........:.........Busy.........Idle.
  Ch H/D STP Down :cnt : Open  Completed  Errs :cnt : Qd  Open  Completed  Errs:           Ms           Ms
---- --- --- ---- :--- :----- ---------- ----- :--- :--- ----- ---------- -----: ------------ -------------
   0 Drv SAS    0 :  1 :    0        124     0 : 62 :  0     0        915     0:       153616            0
   1 Drv SAS    0 :  1 :    0        125     0 : 62 :  0     0        922     0:          728       152888-< 2 Hst iSC    0 :  0 :    0          0     0 :  0 :  0     0          0     0:            0       153617-< 3 Hst iSC    0 :  0 :    0          0     0 :  0 :  0     0          0     0:            0       153617
   4 Drv iSA    0 :  0 :    0          0     0 :  1 :  0     0          0     0:            0       153617

  • In ASUP > ISCSI-SESSION-CONNECTIONS may also report missing Sessions/Connections:

Sessions/Connections to Controller A:

192.XXX1.21 ->  192.XXX1.01
192.XXX1.21 ->  192.XXX1.01
192.XXX0.21 ->  192.XXX0.01
192.XXX0.21 ->  192.XXX0.01

Sessions/Connections to Controller B:

192.XXX0.22 ->  192.XXX0.02
192.XXX0.22 ->  192.XXX0.02
192.XXX0.22 ->  192.XXX0.02

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