After changing 'lpfc_hba_queue_depth' value for Emulex HBA, the new value is not shown in '/sys'

Solution Verified - Updated -


  • We have changed the parameter lpfc_hba_queue_depth from 1024 to 4096 using the steps in article 23366. After adding the entry in modprobe.conf file, re-created initrd image and rebooted system with new image. It was found that above value is changed from 1024 to 4096 in below file:

    # cat /sys/module/lpfc/parameters/lpfc_hba_queue_depth

    But the following HBA specific file in /sys still shows 1024:

    # cat /sys/class/scsi_host/host2/lpfc_hba_queue_depth


  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Emulex LPe1150 1Gb PCIe Fibre Channel Adapter

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