EVA3000 luns are getting deactivated causing pool unknown state.

  • 3502505
  • 27-Oct-2006
  • 16-Mar-2012

Environment

Novell NetWare 6.5 Support Pack 5

Situation

Using pool snapshots and backing up those snapshots the pool would deactivate and go into
an "unknown". Under normal conditions you should never see the pool enter into a state of
unknown.

Resolution

Updated firmware and replaced HBA's with newer Active/Active cards. It appeared that during
a period of high I/O the card's could go into a "BUSY" state. Unfortunately if the driver does not
see any activity from the card it would look for alternate paths. To preserve the integrity of data
if a viable path was not selected the driver would immediately deactivate the device. Updated
drivers (Qlogic) also assisted in recovering from a BUSY state.

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