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SCSI Ultra320 HBAs: Slower Arrays May Experience Sync Messages or Fail to See All Drives (Doc ID 1009755.1)

Last updated on MARCH 06, 2018

Applies to:

Sun Storage S1 Array - Version All Versions and later
Sun Storage D240 (StorEdge) Media Tray - Version All Versions and later
All Platforms

Symptoms

Arrays connected to a SCSI Ultra320 LVD host bus adapter (HBA) may experience sync messages and possibly fail to see individual drives in the attached array.

The /var/adm/messages file will show messages similar to:

genunix: [ID 408822 kern.info] NOTICE: mpt0: fault detected in device; service still available
genunix: [ID 611667 kern.info] NOTICE: mpt0: Connected command timeout for Target 1
scsi: [ID 107833 kern.warning] WARNING: /pci@1f,0/pci@5/scsi@0 (mpt0):
Target 1 reverting to async. mode
mpt: [ID 675377 kern.warning] WARNING: ID[SUNWpd.mpt.sync_wide_backoff.6013]
genunix: [ID 408822 kern.info] NOTICE: mpt0: fault detected in device; service still available
genunix: [ID 611667 kern.info] NOTICE: mpt0: Connected command timeout for Target 2
scsi: [ID 107833 kern.warning] WARNING: /pci@1f,0/pci@5/scsi@0 (mpt0):
Target 2 reverting to async. mode
mpt: [ID 675377 kern.warning] WARNING: ID[SUNWpd.mpt.sync_wide_backoff.6013]

 

Cause

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