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Start documenting ctl(4) sysctls.
MFC after: 2 weeks Sponsored by: The FreeBSD Foundation
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.Dd April 8, 2015
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.Dd May 22, 2015
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.Dt CTL 4
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.Os
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.Sh NAME
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@ -84,6 +84,22 @@ All I/O handled in-kernel, no userland context switch overhead
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.El
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.Pp
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It also serves as a kernel component of the native iSCSI target.
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.Sh SYSCTL VARIABLES
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The following variables are available as both
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.Xr sysctl 8
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variables and
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.Xr loader 8
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tunables:
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.Bl -tag -width indent
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.It Va kern.cam.ctl.iscsi.maxcmdsn_delta
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The number of outstanding commands to advertise to the initiator.
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Technically, it's the difference between ExpCmdSN and MaxCmdSN fields
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in the iSCSI PDU.
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.It Va kern.cam.ctl.iscsi.ping_timeout
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The number of seconds to wait for the initiator to respond to a NOP-In
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PDU.
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In the event that there is no response within that time the session gets
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forcibly terminated.
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.Sh SEE ALSO
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.Xr ctladm 8 ,
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.Xr ctld 8 ,
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