After Fiber reconnected, number of LUNs attached to server increases on Red Hat Enterprise Linux 5.8

Solution Unverified - Updated -


  • When they re-connect the HBA cable to SAN switch, the number of Volumes are 10 times than real number.


  • Red Hat Enterprise Linux 5
    • Observed on kernel-2.6.18-308.el5. Unknown if other versions are affected at this stage.
  • SAN storage provided to server
    • Observed on EMC DMX4 2500 (EMC SYMMETRIX), but unknown if other versions are affected at this stage.
  • At least 2x paths to each LUN
    • Observed on qlogic HBA, but unknown if it is restricted to this version.
  • device-mapper-multipath (observed on device-mapper-multipath-0.4.7-34.el5)

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