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SBP(4)		       FreeBSD Kernel Interfaces Manual			SBP(4)

NAME
     sbp -- Serial Bus Protocol	2 (SBP-2) Mass Storage Devices driver

SYNOPSIS
     kldload firewire
     kldload cam
     kldload sbp

     or

     device sbp
     device firewire
     device scbus
     device da
     device cd
     device pass

DESCRIPTION
     The sbp driver provides support for SBP-2 devices that attach to the
     FireWire (IEEE 1394) port.	 It should work	with SBP-2 devices which the
     CAM layer supports, for example, HDDs, CDROM drives and DVD drives.

     Some users	familiar with umass(4) might wonder why	the device is not
     detached at the CAM layer when the	device is unplugged.  It is detached
     only if the device	has not	been plugged again during several bus resets.
     This is for preventing to detach an active	file system even when the
     device cannot be probed correctly for some	reason after a bus reset or
     when the device is	temporary disconnected because the user	changes	the
     bus topology.  If you want	to force to detach the device, run ``fwcontrol
     -r'' several times	or set hw.firewire.hold_count=0	by sysctl(8).

     Some (broken) HDDs	do not work well with tagged queuing.  If you have
     problems with such	drives,	try ``camcontrol [device id] tags -N 1'' to
     disable tagged queuing.

SEE ALSO
     cam(4), firewire(4), camcontrol(8), fwcontrol(8), kldload(8), sysctl(8)

AUTHORS
     The sbp driver was	written	by Katsushi Kobayashi and Hidetoshi Shimokawa.

     This manual page was written by Katsushi Kobayashi.

FreeBSD	10.1		       February	8, 2012			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | AUTHORS

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<http://www.freebsd.org/cgi/man.cgi?query=sbp&sektion=4&manpath=FreeBSD+8.4-RELEASE>

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