Installing and Configuring the Linux Host with the QLogic Driver

Table 6

QLogic v7.x series driver parameters (page 3 of 3)

 

 

 

 

Parameters

 

QLogic default values

EMC default recommendations

 

 

 

qlFailoverNotifyType

0

0

 

 

 

 

recoveryTime

 

10 seconds

10 seconds

 

 

 

 

failbackTime

 

5 seconds

5 seconds

 

 

 

 

Description of QLogic v7.x-series driver parameters

General driver parameters

When attaching to VNX series, CLARiiON, or Symmetrix storage systems, EMC recommends that the ConfigRequired and ql2xfailover parameters be set to zero.

ql2xopts: string that defines additional driver options and persistent binding info.

ql2xfailover: determines whether the failover functionality is disabled or enabled.

Note: EMC does not support the failover functionality of the QLogic driver.

ql2xmaxqdepth: defines the maximum queue depth reported to the SCSI mid-layer per device and specifies the number of outstanding requests per LUN.

ql2xmaxsectors: defines the maximum number of sectors reported to the SCSI mid-layer per request for the adapter.

q2xmaxsgs: defines the maximum number of scatter-gather entries reported to the SCSI mid-layer per request for the adapter.

ql2xlogintimeout: defines the login timeout value in seconds, during the initial login.

qlport_down_retry: defines the maximum number of command retries to a port that returns a PORT DOWN status.

ql2xretrycount: defines the maximum number of SCSI mid-layer retries allowed per command.

max_srbs: defines the maximum number of simultaneous commands allowed for an adapter.

displayConfig: defines whether to display the current driver configuration. If 1, then the configuration used in

/etc/modules.conf is displayed.

Fibre Channel and FCoE out of kernel driver versions

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Image 81
EMC P/N 300-002-803 manual Etc/modules.conf is displayed