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MFI(4) 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 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 re- quest 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-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. FreeBSD 8.1 January 2, 2010 MFI(4)
NAME | SYNOPSIS | DESCRIPTION | HARDWARE | FILES | DIAGNOSTICS | SEE ALSO | HISTORY | AUTHORS | BUGS
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