bionic (4) cfiscsi.4freebsd.gz

Provided by: freebsd-manpages_11.1-3_all bug

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 Ngie Cooper <ngie@FreeBSD.org>.