Setting queue depth with QLogic HBAs

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Configure your host that is running the Linux® operating system to allow a maximum queue depth of four.

About this task

Configure your host that is running the Linux operating system. For more information, see the documentation on software installation and configuration, and on the command-line interface.

Complete the following steps to set the maximum queue depth:

Procedure

  1. Add the following line to the /etc/modules.conf file:
    For the 2.4 kernel (SUSE Linux Enterprise Server 8 or Red Hat Enterprise Linux 3):
    options qla2300 ql2xfailover=0 ql2xmaxqdepth=new_queue_depth
    For the 2.6 kernel (SUSE Linux Enterprise Server 9, or later, or Red Hat Enterprise Linux 4, or later):
    options qla2xxx ql2xfailover=0 ql2xmaxqdepth=new_queue_depth
  2. Rebuild the RAM disk that is associated with the kernel that is being used by using one of the following commands:
    • If you are running on a SUSE Linux Enterprise Server operating system, run the mk_initrd command.
    • If you are running on a Red Hat Enterprise Linux operating system, run the mkinitrd command and then restart.