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What happens when Object Store access is interrupted for FabricPool?

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storagegrid
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Applies to

  • StorageGRID
  • FabricPool
  • NFS
  • CIFS
  • SAN/Block Protocols

Answer

When connectivity between ONTAP and Fabricpool is interrupted, I/O will time out. The effect of I/O time outs is different per protocol.

NFS:

  • NFS will return error message EJUKEBOX for v3 and EDELAY for v4.x.
  • NFS clients will retry after 5 seconds.
  • If it still gets the same error, NFS client will hang, until connection recovers.
 

CIFS:

  • CIFS will return STATUS_INTERNAL_ERROR to the client.
  • CIFS does not retry on the error.
  • Each application can react differently.
     

SAN/Block Protocols:

  • If a block in the object store environment is required and remains unreachable for two minutes, a read error is returned to the host.
  • ONTAP volumes and LUNs will stay online
  • Host OS might flag the file system as being in an error state.