NAME

       ctl — CAM Target Layer

SYNOPSIS

       To compile this driver into the kernel, place the following line in your kernel configuration file:

             device ctl

       Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

             ctl_load="YES"

DESCRIPTION

       The ctl subsystem provides SCSI disk and processor emulation.  It supports features such as:

       •   Disk and processor device emulation
       •   Tagged queueing
       •   SCSI task attribute support (ordered, head of queue, simple tags)
       •   SCSI implicit command ordering support.
       •   Full task management support (abort, LUN reset, target reset, etc.)
       •   Support for multiple ports
       •   Support for multiple simultaneous initiators
       •   Support for multiple simultaneous backing stores
       •   Persistent reservation support
       •   Mode sense/select support
       •   Error injection support
       •   All I/O handled in-kernel, no userland context switch overhead

SEE ALSO

       ctladm(8), ctlstat(8)

HISTORY

       The ctl subsystem first appeared in FreeBSD 9.1.

AUTHORS

       The ctl subsystem was written by Kenneth Merry <ken@FreeBSD.org>.

Debian                                            April 2, 2013                                           CTL(4)