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MFI(4)		       FreeBSD Kernel Interfaces Manual			MFI(4)

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 con-
     trollers.	Access to RAID arrays (logical disks) from this	driver is pro-
     vided 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 sup-
     ported 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:

     +o	 LSI MegaRAID SAS 1078
     +o	 LSI MegaRAID SAS 8408E
     +o	 LSI MegaRAID SAS 8480E
     +o	 LSI MegaRAID SAS 9260
     +o	 Dell PERC5
     +o	 Dell PERC6
     +o	 IBM ServeRAID-MR10i
     +o	 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.

FreeBSD	10.1			January	2, 2010			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | HARDWARE | FILES | DIAGNOSTICS | SEE ALSO | HISTORY | AUTHORS | BUGS

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