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freebsd-skq/share/man/man4/cfiscsi.4

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Split iscsi(4) ctl frontend off of ctl(4) as cfiscsi(4) The goal of this work is to remove the explicit dependency for ctl(4) on iscsi(4), so end-users without iscsi(4) support in the kernel can use ctl(4) for its other functions. This allows those without iscsi(4) support built into the kernel to use ctl(4) as a test mechanism. As a sidenote, this was possible around the 10.0-RELEASE period, but made impossible for end-users without iscsi(4) between 10.0-RELEASE and 11.0-RELEASE. Automatically load cfiscsi(4) from ctladm(8) and ctld(8) for backwards compatibility with previously releases. The automatic loading feature is compiled into the beforementioned tools if MK_ISCSI == yes when building world. Add a manpage for cfiscsi(4) and refer to it in ctl(4). Differential Revision: D10099 MFC after: 2 months Relnotes: yes Reviewed by: mav, trasz Sponsored by: Dell EMC Isilon
2017-03-30 04:56:27 +00:00
.\" Copyright (c) 2013 Edward Tomasz Napierala
.\" Copyright (c) 2015-2017 Alexander Motin <mav@FreeBSD.org>
Update the spelling of my name Previous spellings of my name (NGie, Ngie) weren't my legal spelling. Use Enji instead for clarity. While here, remove "All Rights Reserved" from copyrights I "own". MFC after: 1 week
2019-04-22 17:52:46 +00:00
.\" Copyright (c) 2017 Enji Cooper <ngie@FreeBSD.org>
Split iscsi(4) ctl frontend off of ctl(4) as cfiscsi(4) The goal of this work is to remove the explicit dependency for ctl(4) on iscsi(4), so end-users without iscsi(4) support in the kernel can use ctl(4) for its other functions. This allows those without iscsi(4) support built into the kernel to use ctl(4) as a test mechanism. As a sidenote, this was possible around the 10.0-RELEASE period, but made impossible for end-users without iscsi(4) between 10.0-RELEASE and 11.0-RELEASE. Automatically load cfiscsi(4) from ctladm(8) and ctld(8) for backwards compatibility with previously releases. The automatic loading feature is compiled into the beforementioned tools if MK_ISCSI == yes when building world. Add a manpage for cfiscsi(4) and refer to it in ctl(4). Differential Revision: D10099 MFC after: 2 months Relnotes: yes Reviewed by: mav, trasz Sponsored by: Dell EMC Isilon
2017-03-30 04:56:27 +00:00
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Random tweaks to cfiscsi(4) man page. MFC after: 2 weeks
2017-05-28 16:53:21 +00:00
.Dd May 28, 2017
Split iscsi(4) ctl frontend off of ctl(4) as cfiscsi(4) The goal of this work is to remove the explicit dependency for ctl(4) on iscsi(4), so end-users without iscsi(4) support in the kernel can use ctl(4) for its other functions. This allows those without iscsi(4) support built into the kernel to use ctl(4) as a test mechanism. As a sidenote, this was possible around the 10.0-RELEASE period, but made impossible for end-users without iscsi(4) between 10.0-RELEASE and 11.0-RELEASE. Automatically load cfiscsi(4) from ctladm(8) and ctld(8) for backwards compatibility with previously releases. The automatic loading feature is compiled into the beforementioned tools if MK_ISCSI == yes when building world. Add a manpage for cfiscsi(4) and refer to it in ctl(4). Differential Revision: D10099 MFC after: 2 months Relnotes: yes Reviewed by: mav, trasz Sponsored by: Dell EMC Isilon
2017-03-30 04:56:27 +00:00
.Dt CFISCSI 4
.Os
.Sh NAME
.Nm cfiscsi
.Nd CAM Target Layer iSCSI target frontend
.Sh SYNOPSIS
To compile this driver into the kernel,
place the following lines in your
kernel configuration file:
.Bd -ragged -offset indent
.Cd "device cfiscsi"
.Cd "device ctl"
.Cd "device iscsi"
.Ed
.Pp
Alternatively, to load the driver as a
module at boot time, place the following line in
.Xr loader.conf 5 :
.Bd -literal -offset indent
cfiscsi_load="YES"
.Ed
.Sh DESCRIPTION
The
.Nm
Random tweaks to cfiscsi(4) man page. MFC after: 2 weeks
2017-05-28 16:53:21 +00:00
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
.Xr ctld 8 .
.Nm
is implemented as a
Split iscsi(4) ctl frontend off of ctl(4) as cfiscsi(4) The goal of this work is to remove the explicit dependency for ctl(4) on iscsi(4), so end-users without iscsi(4) support in the kernel can use ctl(4) for its other functions. This allows those without iscsi(4) support built into the kernel to use ctl(4) as a test mechanism. As a sidenote, this was possible around the 10.0-RELEASE period, but made impossible for end-users without iscsi(4) between 10.0-RELEASE and 11.0-RELEASE. Automatically load cfiscsi(4) from ctladm(8) and ctld(8) for backwards compatibility with previously releases. The automatic loading feature is compiled into the beforementioned tools if MK_ISCSI == yes when building world. Add a manpage for cfiscsi(4) and refer to it in ctl(4). Differential Revision: D10099 MFC after: 2 months Relnotes: yes Reviewed by: mav, trasz Sponsored by: Dell EMC Isilon
2017-03-30 04:56:27 +00:00
.Xr ctl 4
Random tweaks to cfiscsi(4) man page. MFC after: 2 weeks
2017-05-28 16:53:21 +00:00
frontend and uses infrastructure provided by
Split iscsi(4) ctl frontend off of ctl(4) as cfiscsi(4) The goal of this work is to remove the explicit dependency for ctl(4) on iscsi(4), so end-users without iscsi(4) support in the kernel can use ctl(4) for its other functions. This allows those without iscsi(4) support built into the kernel to use ctl(4) as a test mechanism. As a sidenote, this was possible around the 10.0-RELEASE period, but made impossible for end-users without iscsi(4) between 10.0-RELEASE and 11.0-RELEASE. Automatically load cfiscsi(4) from ctladm(8) and ctld(8) for backwards compatibility with previously releases. The automatic loading feature is compiled into the beforementioned tools if MK_ISCSI == yes when building world. Add a manpage for cfiscsi(4) and refer to it in ctl(4). Differential Revision: D10099 MFC after: 2 months Relnotes: yes Reviewed by: mav, trasz Sponsored by: Dell EMC Isilon
2017-03-30 04:56:27 +00:00
.Xr iscsi 4 .
.Sh SYSCTL VARIABLES
The following variables are available as both
.Xr sysctl 8
variables and
.Xr loader 8
tunables:
.Bl -tag -width indent
.It Va 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.
.It Va 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.
.It Va 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.
.El
.Sh SEE ALSO
.Xr ctl 4 ,
Random tweaks to cfiscsi(4) man page. MFC after: 2 weeks
2017-05-28 16:53:21 +00:00
.Xr iscsi 4 ,
.Xr ctl.conf 5 ,
.Xr ctld 8
Split iscsi(4) ctl frontend off of ctl(4) as cfiscsi(4) The goal of this work is to remove the explicit dependency for ctl(4) on iscsi(4), so end-users without iscsi(4) support in the kernel can use ctl(4) for its other functions. This allows those without iscsi(4) support built into the kernel to use ctl(4) as a test mechanism. As a sidenote, this was possible around the 10.0-RELEASE period, but made impossible for end-users without iscsi(4) between 10.0-RELEASE and 11.0-RELEASE. Automatically load cfiscsi(4) from ctladm(8) and ctld(8) for backwards compatibility with previously releases. The automatic loading feature is compiled into the beforementioned tools if MK_ISCSI == yes when building world. Add a manpage for cfiscsi(4) and refer to it in ctl(4). Differential Revision: D10099 MFC after: 2 months Relnotes: yes Reviewed by: mav, trasz Sponsored by: Dell EMC Isilon
2017-03-30 04:56:27 +00:00
.Sh HISTORY
The
.Nm
subsystem first appeared in
.Fx 10.0
as part of the
.Xr ctl 4
driver.
It was split off of
.Xr ctl 4
in
.Fx 12.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm
subsystem was developed by
.An Edward Tomasz Napierala Aq Mt trasz@FreeBSD.org
under sponsorship from the FreeBSD Foundation.
This manual page was written by
Update the spelling of my name Previous spellings of my name (NGie, Ngie) weren't my legal spelling. Use Enji instead for clarity. While here, remove "All Rights Reserved" from copyrights I "own". MFC after: 1 week
2019-04-22 17:52:46 +00:00
.An Enji Cooper Aq Mt ngie@FreeBSD.org .
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