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mfi.4freebsd

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Version: 361989 (ubuntu - 24/10/10)

Section: 4 (Pilotes et protocoles réseau)


BSD mandoc

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.conf5:

 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 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 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 driver supports the following hardware:

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 driver first appeared in Fx 6.1 .

AUTHORS

The driver and this manual page were written by An Scott Long Aq scottl@FreeBSD.org .

BUGS

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