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CFISCSI(4) FreeBSD Kernel Interfaces Manual CFISCSI(4)
NAME
cfiscsi - CAM Target Layer iSCSI target frontend
SYNOPSIS
To compile this driver into the kernel, place the following lines in your
kernel configuration file:
device cfiscsi
device ctl
device iscsi
Alternatively, to load the driver as a module at boot time, place the
following line in loader.conf(5):
cfiscsi_load="YES"
DESCRIPTION
The cfiscsi subsystem provides the kernel component of an iSCSI target.
The target is the iSCSI server, providing LUNs backed by local files and
volumes to remote initiators. The userspace component is provided by
ctld(8). cfiscsi is implemented as a ctl(4) frontend and uses
infrastructure provided by iscsi(4).
SYSCTL VARIABLES
The following variables are available as both sysctl(8) variables and
loader(8) tunables:
kern.cam.ctl.iscsi.debug
Verbosity level for log messages from the kernel part of iSCSI
target. Set to 0 to disable logging or 1 to warn about potential
problems. Larger values enable debugging output. Defaults to 1.
kern.cam.ctl.iscsi.maxtags
The number of outstanding commands to advertise to each iSCSI
initiator. Current implementation is not very accurate, so do
not set this below 2. Defaults to 256.
kern.cam.ctl.iscsi.ping_timeout
The number of seconds to wait for the iSCSI initiator to respond
to a NOP-In PDU. In the event that there is no response within
that time the session gets forcibly terminated. Set to 0 to
disable sending NOP-In PDUs. Defaults to 5.
SEE ALSO
ctl(4), iscsi(4), ctl.conf(5), ctld(8)
HISTORY
The cfiscsi subsystem first appeared in FreeBSD 10.0 as part of the
ctl(4) driver. It was split off of ctl(4) in FreeBSD 12.0.
AUTHORS
The cfiscsi subsystem was developed by Edward Tomasz Napierala
<trasz@FreeBSD.org> under sponsorship from the FreeBSD Foundation. This
manual page was written by Enji Cooper <ngie@FreeBSD.org>.
FreeBSD 14.2-RELEASE May 28, 2017 FreeBSD 14.2-RELEASE