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mfi — LSI MegaRAID SAS driver
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"
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 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
/dev/mfid? array/logical disk interface /dev/mfi? management interface
mfid%d: Unable to delete busy device An attempt was made to remove a mounted volume.
The mfi driver first appeared in FreeBSD 6.1.
The mfi driver and this manual page were written by Scott Long <scottl@FreeBSD.org>.
The driver does not support big-endian architectures at this time.