Setting the parameter values
Installing and Configuring the Linux Host with the QLogic Driver
◆MaxRetriesPerIo: defines the total number of retries to perform before failing the command and returning a DID_NO_CONNECT selection timeout to the OS.
◆qlFailoverNotifyType: defines the type of failover notification mechanism to use when a failover or failback occurs.
◆recoveryTime: defines the recovery time in seconds required before commands may be sent to a target device after a failback is performed.
◆failbackTime: defines the delay in seconds before a failback is performed to ensure that all paths are available.
The values of the general driver parameters may be modified at the driver load time. This modification may be performed at the com- mand line or by adding the parameters to the /etc/modules.conf file and including them in the ramdisk.
When attaching to VNX series, CLARiiON, and Symmetrix storage systems, EMC recommends that the ConfigRequired and ql2xfailover parameters be set to zero in the /etc/modules.conf file.
1.To load the QLogic driver onto the system with the parameters at the command line, use:
modprobe qla2300.o extended_error_logging=1
In order for the modular driver to be loaded at boot time with these parameters set to 0, a separate options line needs to be added to the /etc/modules.conf file.
2.Edit the file:
vi /etc/modules.conf
3.Add the options line for the appropriate driver settings. options qla2300 extended_error_logging=1
Example:
alias parport_lowlevel parport_pc alias eth0 eepro100
alias scsi_hostadapter cpqarray alias scsi_hostadapter1 cpqarray alias scsi_hostadapter2 qla2300 alias scsi_hostadapter3 qla2300
options scsi_mod max_scsi_luns=255 scsi_allow_ghost_devices=1 options qla2300 extended_error_logging=1
Fibre Channel and FCoE out of kernel driver versions
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