topic Re: restart lpfc820 driver in Operating System - Linux https://community.hpe.com/t5/operating-system-linux/restart-lpfc820-driver/m-p/4553881#M39175 I assume you're using some reasonably modern Linux distribution with a 2.6 series kernel.<BR /><BR />Unmount all filesystems and deactivate all VGs that are using that driver. If you have any databases accessing raw disks through that driver, stop them too.<BR /><BR />Then, remove the driver module from memory:<BR />modprobe -r lpfc820<BR /><BR />Reload it:<BR />modprobe lpfc820<BR /><BR />This will cause a total restart of the driver, re-detecting all SAN disks. The SAN disk device names (/dev/sd*) may be rearranged in the restart procedure, but udev &amp; hotplug sub-systems should automatically cause the LVM state to be updated.<BR /><BR />MK Tue, 22 Dec 2009 12:01:05 GMT Matti_Kurkela 2009-12-22T12:01:05Z restart lpfc820 driver https://community.hpe.com/t5/operating-system-linux/restart-lpfc820-driver/m-p/4553880#M39174 Is there a way to restart a failing SAN driver (Emulex lpfc820 driver)?<BR /><BR />pat Tue, 22 Dec 2009 08:20:25 GMT https://community.hpe.com/t5/operating-system-linux/restart-lpfc820-driver/m-p/4553880#M39174 patrkell 2009-12-22T08:20:25Z Re: restart lpfc820 driver https://community.hpe.com/t5/operating-system-linux/restart-lpfc820-driver/m-p/4553881#M39175 I assume you're using some reasonably modern Linux distribution with a 2.6 series kernel.<BR /><BR />Unmount all filesystems and deactivate all VGs that are using that driver. If you have any databases accessing raw disks through that driver, stop them too.<BR /><BR />Then, remove the driver module from memory:<BR />modprobe -r lpfc820<BR /><BR />Reload it:<BR />modprobe lpfc820<BR /><BR />This will cause a total restart of the driver, re-detecting all SAN disks. The SAN disk device names (/dev/sd*) may be rearranged in the restart procedure, but udev &amp; hotplug sub-systems should automatically cause the LVM state to be updated.<BR /><BR />MK Tue, 22 Dec 2009 12:01:05 GMT https://community.hpe.com/t5/operating-system-linux/restart-lpfc820-driver/m-p/4553881#M39175 Matti_Kurkela 2009-12-22T12:01:05Z