NAME

       mfi — LSI MegaRAID SAS driver

SYNOPSIS

       To compile this driver into the kernel, place the following lines in your kernel configuration file:

             device pci
             device mfi

       Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

             mfi_load="YES"

DESCRIPTION

       This  driver  is  for  LSI's  next  generation  PCI  Express SAS RAID controllers.  Access to RAID arrays
       (logical disks) from this driver is provided via /dev/mfid? device nodes.  A simple management  interface
       is also provided on a per-controller basis via the /dev/mfi? device node.

       The  mfi  name is derived from the phrase "MegaRAID Firmware Interface", which is substantially different
       than the old "MegaRAID" interface and thus requires a new driver.  Older SCSI and SATA MegaRAID cards are
       supported by amr(4) and will not work with this driver.

       Two sysctls are provided to tune the mfi driver's behavior when a request is made  to  remove  a  mounted
       volume.   By  default  the  driver  will disallow any requests to remove a mounted volume.  If the sysctl
       dev.mfi.%d.delete_busy_volumes is set to 1, then the driver will allow mounted volumes to be removed.

HARDWARE

       The mfi driver supports the following hardware:

       •   LSI MegaRAID SAS 1078
       •   LSI MegaRAID SAS 8408E
       •   LSI MegaRAID SAS 8480E
       •   LSI MegaRAID SAS 9260
       •   Dell PERC5
       •   Dell PERC6
       •   IBM ServeRAID M5015 SAS/SATA
       •   IBM ServeRAID-MR10i
       •   Intel RAID Controller SROMBSAS18E

FILES

       /dev/mfid?  array/logical disk interface
       /dev/mfi?   management interface

DIAGNOSTICS

       mfid%d: Unable to delete busy device  An attempt was made to remove a mounted volume.

SEE ALSO

       amr(4), pci(4), mfiutil(8)

HISTORY

       The mfi driver first appeared in FreeBSD 6.1.

AUTHORS

       The mfi driver and this manual page were written by Scott Long <scottl@FreeBSD.org>.

BUGS

       The driver does not support big-endian architectures at this time.

Debian                                            May 12, 2010                                            MFI(4)