Emulex LightPulse LPe1105-M4 HBA Installation Guide download pdf (Page 151)

Device reconfiguration procedures

151

Additional Notes

Device reconfiguration procedures

The Linux v2.6.x kernel lacks a command built into the kernel that

allows for a dynamic SCSI bus reconfiguration such as

drvconfig or

ioscan.

The SCSI bus may be rescanned with a system reboot, or with a

removal and reinsertion of the modular driver. In either case, all I/O

must be stopped and all other mounted filesystems must be

unmounted before rebooting or removing the modular driver.

Note: In the Linux v2.6.x kernel, the adapter numbers will increment in the

/proc filesystem with each reinsertion of the Emulex driver.

Rebooting the host

Rebooting the host allows for the reliable detection of newly added

devices. The host may be rebooted after all I/O has been stopped.

Unloading and reloading the modular Emulex driver

Depending upon the hardware configuration, it is possible to unload

and reload the modular Emulex driver. This driver removal from and

reinsertion into the kernel causes a scan of the SCSI bus and causes

the driver to detect any newly added device(s).

If the driver is to be removed from and then reinserted into the

kernel, perform the following before removing the driver:

1. Stop all I/O.

2. Unmount all filesystems attached to the Emulex driver.

3. If the Unisphere Host Agent or Navisphere Agent/CLI is

installed and enabled on the host, stop the Unisphere Host Agent

or Navisphere Agent service by typing one of the following

commands:

• For the Unisphere Host Agent:

/etc/init.d/hostagent stop

service hostagent stop

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Emulex LightPulse LPe1105-M4 HBA Installation Guide Page 151