Provided by: freebsd-manpages_7.2-1_all
mfi - LSI MegaRAID SAS driver
To compile this driver into the kernel, place the following lines in your
kernel configuration file:
Alternatively, to load the driver as a module at boot time, place the
following line in loader.conf(5):
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.
The mfi driver supports the following hardware:
· LSI MegaRAID SAS 8408E
· LSI MegaRAID SAS 8480E
· Dell PERC5/i
/dev/mfid? array/logical disk interface
/dev/mfi? management interface
mfid%d: Unable to delete busy device An attempt was made to remove a
The mfi driver first appeared in FreeBSD 6.1.
The mfi driver and this manual page were written by Scott Long
The driver does not support big-endian architectures at this time.