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/share/man/man4/mfi.4

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  1.\" Copyright (c) 2006 Scott Long
  2.\" All rights reserved.
  3.\"
  4.\" Redistribution and use in source and binary forms, with or without
  5.\" modification, are permitted provided that the following conditions
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 24.\"
 25.\" $FreeBSD$
 26.\"
 27.Dd May 12, 2010
 28.Dt MFI 4
 29.Os
 30.Sh NAME
 31.Nm mfi
 32.Nd "LSI MegaRAID SAS driver"
 33.Sh SYNOPSIS
 34To compile this driver into the kernel,
 35place the following lines in your
 36kernel configuration file:
 37.Bd -ragged -offset indent
 38.Cd "device pci"
 39.Cd "device mfi"
 40.Ed
 41.Pp
 42Alternatively, to load the driver as a
 43module at boot time, place the following line in
 44.Xr loader.conf 5 :
 45.Bd -literal -offset indent
 46mfi_load="YES"
 47.Ed
 48.Sh DESCRIPTION
 49This driver is for LSI's next generation PCI Express SAS RAID controllers.
 50Access to RAID arrays (logical disks) from this driver is provided via
 51.Pa /dev/mfid?
 52device nodes.
 53A simple management interface is also provided on a per-controller basis via
 54the
 55.Pa /dev/mfi?
 56device node.
 57.Pp
 58The
 59.Nm
 60name is derived from the phrase "MegaRAID Firmware Interface", which is
 61substantially different than the old "MegaRAID" interface and thus requires
 62a new driver.
 63Older SCSI and SATA MegaRAID cards are supported by
 64.Xr amr 4
 65and will not work with this driver.
 66.Pp
 67Two sysctls are provided to tune the
 68.Nm
 69driver's behavior when a request is made to remove a mounted volume.
 70By default the driver will disallow any requests to remove a mounted volume.
 71If the sysctl
 72.Va dev.mfi.%d.delete_busy_volumes
 73is set to 1,
 74then the driver will allow mounted volumes to be removed.
 75.Sh HARDWARE
 76The
 77.Nm
 78driver supports the following hardware:
 79.Pp
 80.Bl -bullet -compact
 81.It
 82LSI MegaRAID SAS 1078
 83.It
 84LSI MegaRAID SAS 8408E
 85.It
 86LSI MegaRAID SAS 8480E
 87.It
 88LSI MegaRAID SAS 9260
 89.It
 90Dell PERC5
 91.It
 92Dell PERC6
 93.It
 94IBM ServeRAID M5015 SAS/SATA
 95.It
 96IBM ServeRAID-MR10i
 97.It
 98Intel RAID Controller SROMBSAS18E
 99.El
100.Sh FILES
101.Bl -tag -width ".Pa /dev/mfid?" -compact
102.It Pa /dev/mfid?
103array/logical disk interface
104.It Pa /dev/mfi?
105management interface
106.El
107.Sh DIAGNOSTICS
108.Bl -diag
109.It "mfid%d: Unable to delete busy device"
110An attempt was made to remove a mounted volume.
111.El
112.Sh SEE ALSO
113.Xr amr 4 ,
114.Xr pci 4 ,
115.Xr mfiutil 8
116.Sh HISTORY
117The
118.Nm
119driver first appeared in
120.Fx 6.1 .
121.Sh AUTHORS
122The
123.Nm
124driver and this manual page were written by
125.An Scott Long Aq scottl@FreeBSD.org .
126.Sh BUGS
127The driver does not support big-endian architectures at this time.