SIMPLE SOLUTIONS

CTL(4FREEBSD) - man page online | special files

CAM Target Layer.

Chapter
April 2, 2013
CTL(4)                             BSD Kernel Interfaces Manual                            CTL(4)

NAME

ctl — CAM Target Layer

SYNOPSIS

To compile this driver into the kernel, place the following line in your kernel configura‐ tion 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 It also serves as a kernel component of the native iSCSI target.

SEE ALSO

ctladm(8), ctld(8), ctlstat(8)

HISTORY

The ctl subsystem first appeared in FreeBSD 9.1.

AUTHORS

The ctl subsystem was written by Kenneth Merry <@FreeBSD.org>.
BSD April 2, 2013 BSD