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<div id="contentwrap"><h1>FreeBSD 9.0-RELEASE Release Notes</h1>
<div class="IMPORTANT">
<blockquote class="IMPORTANT">
<p><b>Important:</b> If you are upgrading from a previous release of
FreeBSD, please read <a href="http://www.FreeBSD.org/releases/9.0R/relnotes-detailed.html#UPGRADE" target="_top" shape="rect">upgrading section in the Release Notes</a> for notable
incompatibilities carefully.</p>
</blockquote>
</div>
<h2>Release Highlights</h2>
<p>The highlights in the 9.0-RELEASE are the following. For more
details, please see <a href="relnotes-detailed.html" shape="rect">the Detailed
Release Notes</a>.</p>
<ul>
<li><p>The FreeBSD kernel now supports Capsicum Capability Mode. Capsicum is a set of
features for sandboxing support, using a capability model in which the capabilities are
file descriptors. Two new kernel options <tt class="LITERAL">CAPABILITIES</tt> and <tt class="LITERAL">CAPABILITY_MODE</tt> have been added to the <tt class="FILENAME">GENERIC</tt> kernel. For more information about Capsicum, see <a href="http://www.cl.cam.ac.uk/research/security/capsicum/" target="_top" shape="rect">http://www.cl.cam.ac.uk/research/security/capsicum/</a>.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=219129" target="_top" shape="rect">r219129</a>]</p></li>
<li><p>The <a href="http://www.FreeBSD.org/cgi/man.cgi?query=hhook&sektion=9&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">hhook</span>(9)</span></a> (Helper
Hook) and <a href="http://www.FreeBSD.org/cgi/man.cgi?query=khelp&sektion=9&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">khelp</span>(9)</span></a> (Kernel
Helpers) KPIs have been implemented. These are a kind of
superset of <a href="http://www.FreeBSD.org/cgi/man.cgi?query=pfil&sektion=9&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">pfil</span>(9)</span></a> framework
for more general use in the kernel. The <a href="http://www.FreeBSD.org/cgi/man.cgi?query=hhook&sektion=9&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">hhook</span>(9)</span></a> KPI
provides a way for kernel subsystems to export hook points
that <a href="http://www.FreeBSD.org/cgi/man.cgi?query=khelp&sektion=9&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">khelp</span>(9)</span></a> modules can
hook to provide enhanced or new functionality to the
kernel. The <a href="http://www.FreeBSD.org/cgi/man.cgi?query=khelp&sektion=9&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">khelp</span>(9)</span></a> KPI
provides a framework for managing <a href="http://www.FreeBSD.org/cgi/man.cgi?query=khelp&sektion=9&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">khelp</span>(9)</span></a> modules,
which indirectly use the <a href="http://www.FreeBSD.org/cgi/man.cgi?query=hhook&sektion=9&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">hhook</span>(9)</span></a> KPI to
register their hook functions with hook points of interest
within the kernel. These allow a structured way to
dynamically extend the kernel at runtime in an ABI
preserving manner.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=216758" target="_top" shape="rect">r216758</a>, <a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=216615" target="_top" shape="rect">r216615</a>]</p></li>
<li><p>A new resource accounting API has been implemented. It can
keep per-process, per-jail, and per-loginclass resource
accounting information. Note that this is not built nor
installed by default. To build and install them, specify <tt class="LITERAL">options RACCT</tt> in the kernel configuration
file and rebuild the base system as described in the <a href="http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html" target="_top" shape="rect">FreeBSD Handbook</a>.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=220137" target="_top" shape="rect">r220137</a>]</p></li>
<li><p>A new resource-limiting API has been implemented. It works
in conjunction with the <tt class="LITERAL">RACCT</tt>
resource accounting implementation and takes user-configurable
actions based on the set of rules it maintains and the current
resource usage. The <a href="http://www.FreeBSD.org/cgi/man.cgi?query=rctl&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">rctl</span>(8)</span></a> utility has
been added to manage the rules in userland. Note that this is
not built nor installed by default. To build and install them,
specify <tt class="LITERAL">options RCTL</tt> in the kernel
configuration file and rebuild the base system as described in
the <a href="http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html" target="_top" shape="rect">FreeBSD Handbook</a>.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=220163" target="_top" shape="rect">r220163</a>]</p></li>
<li><p>[powerpc] FreeBSD/powerpc now supports Sony Playstation 3
using the OtherOS feature available on firmwares 3.15 and
earlier.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=217044" target="_top" shape="rect">r217044</a>]</p></li>
<li><p>[amd64, i386] The FreeBSD <a href="http://www.FreeBSD.org/cgi/man.cgi?query=usb&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">usb</span>(4)</span></a> subsystem now
supports USB 3.0 by default.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=223098" target="_top" shape="rect">r223098</a>]</p></li>
<li><p>The FreeBSD <a href="http://www.FreeBSD.org/cgi/man.cgi?query=usb&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">usb</span>(4)</span></a> subsystem now
supports USB packet filter. This allows to capture packets
which go through each USB host controller. The
implementation is almost based on <a href="http://www.FreeBSD.org/cgi/man.cgi?query=bpf&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">bpf</span>(4)</span></a> code. The
userland program <a href="http://www.FreeBSD.org/cgi/man.cgi?query=usbdump&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">usbdump</span>(8)</span></a> has been
added.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=215649" target="_top" shape="rect">r215649</a>]</p></li>
<li><p>A bxe(4) driver for Broadcom NetXtreme II 10GbE controllers
(BCM57710, BCM57711, BCM57711E) has been added.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=219647" target="_top" shape="rect">r219647</a>]</p></li>
<li><p>A <a href="http://www.FreeBSD.org/cgi/man.cgi?query=cxgbe&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">cxgbe</span>(4)</span></a> driver for
Chelsio T4 (Terminator 4) based 10Gb/1Gb adapters has been
added.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=218794" target="_top" shape="rect">r218794</a>]</p></li>
<li><p>The <a href="http://www.FreeBSD.org/cgi/man.cgi?query=em&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect"><span class="CITEREFENTRY"><span class="REFENTRYTITLE">em</span>(4)</span></a> driver has
been updated to version 7.3.2.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=219753" target="_top" shape="rect">r219753</a>]</p></li>
<li><p>The <a href="http://www.FreeBSD.org/cgi/man.cgi?query=igb&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">igb</span>(4)</span></a> driver has
been updated to version 2.2.5.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=223350" target="_top" shape="rect">r223350</a>]</p></li>
<li><p>The <a href="http://www.FreeBSD.org/cgi/man.cgi?query=igb&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">igb</span>(4)</span></a> driver now
supports Intel I350 PCIe Gigabit Ethernet controllers.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=218530" target="_top" shape="rect">r218530</a>]</p></li>
<li><p>The <a href="http://www.FreeBSD.org/cgi/man.cgi?query=ixgbe&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">ixgbe</span>(4)</span></a> driver has
been updated to version 2.3.8.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=217593" target="_top" shape="rect">r217593</a>]</p></li>
<li><p>The <a href="http://www.FreeBSD.org/cgi/man.cgi?query=re&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect"><span class="CITEREFENTRY"><span class="REFENTRYTITLE">re</span>(4)</span></a> driver now
supports RTL8168E/8111E-VL PCIe Gigabit Ethernet controllers
and RTL8401E PCIe Fast Ethernet controllers.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=217498" target="_top" shape="rect">r217498</a>, <a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=218760" target="_top" shape="rect">r218760</a>]</p></li>
<li><p>A <a href="http://www.FreeBSD.org/cgi/man.cgi?query=vte&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">vte</span>(4)</span></a> driver for
RDC R6040 Fast Ethernet controllers, which are commonly
found on the Vortex86 System On a Chip, has been added.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=216829" target="_top" shape="rect">r216829</a>]</p></li>
<li><p>A <a href="http://www.FreeBSD.org/cgi/man.cgi?query=vxge&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">vxge</span>(4)</span></a> driver for
the Neterion X3100 10GbE Server/Storage adapter has been
added.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=221167" target="_top" shape="rect">r221167</a>]</p></li>
<li><p><a href="http://www.FreeBSD.org/cgi/man.cgi?query=ipfw&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">ipfw</span>(8)</span></a> now supports
IPv6 in the <tt class="COMMAND">fwd</tt> action.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=225044" target="_top" shape="rect">r225044</a>]</p></li>
<li><p><a href="http://www.FreeBSD.org/cgi/man.cgi?query=ipfw&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">ipfw</span>(8)</span></a> now supports
the <tt class="COMMAND">call</tt> and <tt class="COMMAND">return</tt> actions. Upon the <tt class="COMMAND">call <tt class="REPLACEABLE"><i>number</i></tt></tt> action, the
current rule number is saved in the internal stack and
ruleset processing continues with the first rule numbered
<tt class="REPLACEABLE"><i>number</i></tt> or higher. The
<tt class="COMMAND">return</tt> action takes the rule number
saved to internal stack by the latest <tt class="COMMAND">call</tt> action and returns ruleset
processing to the first rule with number greater than that
saved number.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=223666" target="_top" shape="rect">r223666</a>]</p></li>
<li><p>For Infiniband support, OFED (OpenFabrics Enterprise
Distribution) version 1.5.3 has been imported into the base
system. Note that this is not built nor installed by default.
To build and install them, specify <tt class="LITERAL">WITH_OFED=yes</tt> in <tt class="FILENAME">/etc/src.conf</tt> and rebuild the base
system as described in the <a href="http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html" target="_top" shape="rect">FreeBSD Handbook</a>.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=219820" target="_top" shape="rect">r219820</a>]</p></li>
<li><p>The FreeBSD TCP/IP network stack now supports IPv4 prefixes
with /31 as described in RFC 3021, “Using 31-Bit
Prefixes on IPv4 Point-to-Point Links”.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=226572" target="_top" shape="rect">r226572</a>]</p></li>
<li><p>The FreeBSD TCP/IP network stack now supports the <a href="http://www.FreeBSD.org/cgi/man.cgi?query=mod_cc&sektion=9&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">mod_cc</span>(9)</span></a> pluggable
congestion control framework. This allows TCP congestion
control algorithms to be implemented as dynamically loadable
kernel modules. The following kernel modules are available
as of 9.0-RELEASE: <a href="http://www.FreeBSD.org/cgi/man.cgi?query=cc_chd&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">cc_chd</span>(4)</span></a> for the
CAIA-Hamilton-Delay algorithm, <a href="http://www.FreeBSD.org/cgi/man.cgi?query=cc_cubic&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">cc_cubic</span>(4)</span></a> for the
CUBIC algorithm, <a href="http://www.FreeBSD.org/cgi/man.cgi?query=cc_hd&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">cc_hd</span>(4)</span></a> for the
Hamilton-Delay algorithm, <a href="http://www.FreeBSD.org/cgi/man.cgi?query=cc_htcp&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">cc_htcp</span>(4)</span></a> for the
H-TCP algorithm, <a href="http://www.FreeBSD.org/cgi/man.cgi?query=cc_newreno&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">cc_newreno</span>(4)</span></a> for
the NewReno algorithm, and <a href="http://www.FreeBSD.org/cgi/man.cgi?query=cc_vegas&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">cc_vegas</span>(4)</span></a> for the
Vegas algorithm. The default algorithm can be set by a new
<a href="http://www.FreeBSD.org/cgi/man.cgi?query=sysctl&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">sysctl</span>(8)</span></a> variable
<code class="VARNAME">net.inet.tcp.cc.algorithm</code>. The
value must be set to one of the names listed by <code class="VARNAME">net.inet.tcp.cc.available</code>, and <tt class="LITERAL">newreno</tt> is the default set at boot
time. For more detail, see the <a href="http://www.FreeBSD.org/cgi/man.cgi?query=mod_cc&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">mod_cc</span>(4)</span></a> and <a href="http://www.FreeBSD.org/cgi/man.cgi?query=mod_cc&sektion=9&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">mod_cc</span>(9)</span></a> manual
pages.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=216109" target="_top" shape="rect">r216109</a>, <a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=216114" target="_top" shape="rect">r216114</a>, <a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=216115" target="_top" shape="rect">r216115</a>, <a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=218152" target="_top" shape="rect">r218152</a>, <a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=218153" target="_top" shape="rect">r218153</a>, <a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=218155" target="_top" shape="rect">r218155</a>]</p></li>
<li><p>An <a href="http://www.FreeBSD.org/cgi/man.cgi?query=h_ertt&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">h_ertt</span>(4)</span></a> (Enhanced
Round Trip Time) <a href="http://www.FreeBSD.org/cgi/man.cgi?query=khelp&sektion=9&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">khelp</span>(9)</span></a> module has
been added. This module allows per-connection, low noise
estimates of the instantaneous RTT in the TCP/IP network
stack with a robust implementation even in the face of
delayed acknowledgments and/or TSO (TCP Segmentation
Offload) being in use for a connection.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=217806" target="_top" shape="rect">r217806</a>]</p></li>
<li><p>A new <a href="http://www.FreeBSD.org/cgi/man.cgi?query=tcp&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">tcp</span>(4)</span></a> socket option
<tt class="LITERAL">TCP_CONGESTION</tt> has been added. This
allows to select or query the congestion control algorithm
that the TCP/IP network stack will use for connections on
the socket.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=218912" target="_top" shape="rect">r218912</a>]</p></li>
<li><p>The <a href="http://www.FreeBSD.org/cgi/man.cgi?query=ng_netflow&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">ng_netflow</span>(4)</span></a> <a href="http://www.FreeBSD.org/cgi/man.cgi?query=netgraph&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">netgraph</span>(4)</span></a> node now
supports NetFlow version 9. A new <tt class="LITERAL">export9</tt> hook has been added for NetFlow
v9 data. Note that data export can be done simultaneously in
both version 5 and version 9.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=219183" target="_top" shape="rect">r219183</a>]</p></li>
<li><p>The <a href="http://www.FreeBSD.org/cgi/man.cgi?query=geom_map&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">geom_map</span>(4)</span></a> GEOM
class has been added. This allows to generate multiple geom
providers based on a hard-coded layout of a device with no
explicit partition table such as embedded flash storage. For
more information, see the <a href="http://www.FreeBSD.org/cgi/man.cgi?query=geom_map&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">geom_map</span>(4)</span></a> manual
page.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=220559" target="_top" shape="rect">r220559</a>]</p></li>
<li><p>The <a href="http://www.FreeBSD.org/cgi/man.cgi?query=graid&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">graid</span>(8)</span></a> GEOM class
has been added. This is a replacement of the <a href="http://www.FreeBSD.org/cgi/man.cgi?query=ataraid&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">ataraid</span>(4)</span></a> driver
supporting various BIOS-based software RAID.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=219974" target="_top" shape="rect">r219974</a>]</p></li>
<li><p>A <a href="http://www.FreeBSD.org/cgi/man.cgi?query=tws&sektion=4&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">tws</span>(4)</span></a> driver for
3ware 9750 SATA+SAS 6Gb/s RAID controllers has been
added.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=226115" target="_top" shape="rect">r226115</a>]</p></li>
<li><p>The FreeBSD Fast File System now supports softupdates
journaling. It introduces a intent log into a
softupdates-enabled file system which eliminates the need for
background <a href="http://www.FreeBSD.org/cgi/man.cgi?query=fsck&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">fsck</span>(8)</span></a> even on
unclean shutdown. This can be enabled in a per-filesystem
basis by using the <code class="OPTION">-j</code> flag of the
<a href="http://www.FreeBSD.org/cgi/man.cgi?query=newfs&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">newfs</span>(8)</span></a> utility or
the <code class="OPTION">-j enable</code> option of the <a href="http://www.FreeBSD.org/cgi/man.cgi?query=tunefs&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">tunefs</span>(8)</span></a>
utility. Note that the 9.0-RELEASE installer automatically
enables softupdates journaling for newly-created UFS file
systems.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=207141" target="_top" shape="rect">r207141</a>, <a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=218726" target="_top" shape="rect">r218726</a>]</p></li>
<li><p>The FreeBSD Fast File System now supports the <tt class="LITERAL">TRIM</tt> command when freeing data blocks. A
new flag <code class="OPTION">-t</code> in the <a href="http://www.FreeBSD.org/cgi/man.cgi?query=newfs&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">newfs</span>(8)</span></a> and <a href="http://www.FreeBSD.org/cgi/man.cgi?query=tunefs&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">tunefs</span>(8)</span></a> utilities
sets the TRIM-enable flag for a file system. The TRIM-enable
flag makes the file system send a delete request to the
underlying device for each freed block. The <tt class="LITERAL">TRIM</tt> command is specified as a Data Set
Management Command in the ATA8-ACS2 standard to carry the
information related to deleted data blocks to a device,
especially for a SSD (Solid-State Drive) for optimization.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=216796" target="_top" shape="rect">r216796</a>]</p></li>
<li><p>The FreeBSD NFS subsystem has been updated. The new
implementation supports NFS version 4 in addition to 2 and
3. The kernel options for the NFS server and client are
changed from <tt class="LITERAL">NFSSERVER</tt> and <tt class="LITERAL">NFSCLIENT</tt> to <tt class="LITERAL">NFSD</tt> and <tt class="LITERAL">NFSCL</tt>. <a href="http://www.FreeBSD.org/cgi/man.cgi?query=sysctl&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">sysctl</span>(8)</span></a> variables
which start with <code class="VARNAME">vfs.nfssrv.</code> have
been renamed to <code class="VARNAME">vfs.nfsd.</code>. The
NFS server now supports <code class="VARNAME">vfs.nfsd.server_max_nfsvers</code> and <code class="VARNAME">vfs.nfsd.server_min_nfsvers</code> <a href="http://www.FreeBSD.org/cgi/man.cgi?query=sysctl&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">sysctl</span>(8)</span></a> variables to
specify the maximum and the minimum NFS version number which
the server accepts. The default value is set to <tt class="LITERAL">3</tt> and <tt class="LITERAL">2</tt>,
respectively.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=221124" target="_top" shape="rect">r221124</a>]</p></li>
<li><p>The FreeBSD ZFS subsystem has been updated to the SPA
(Storage Pool Allocator, also known as zpool) version 28. It
now supports data deduplication, triple parity RAIDZ (raidz3),
snapshot holds, log device removal, zfs diff, zpool split,
zpool import <code class="OPTION">-F</code>, and read-only
zpool import.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=219089" target="_top" shape="rect">r219089</a>]</p></li>
<li><p>An implementation of <code class="FUNCTION">iconv()</code>
API libraries and utilities which are standardized in Single
UNIX Specification has been imported. These are based on
NetBSD's Citrus implementation. Note that these are not built
nor installed by default. To build and install them, specify
<tt class="LITERAL">WITH_ICONV=yes</tt> in <tt class="FILENAME">/etc/src.conf</tt> and rebuild the base
system as described in the <a href="http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html" target="_top" shape="rect">FreeBSD Handbook</a>.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=219019" target="_top" shape="rect">r219019</a>]</p></li>
<li><p>A <a href="http://www.FreeBSD.org/cgi/man.cgi?query=readline&sektion=3&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">readline</span>(3)</span></a> API set
has been imported into <b class="APPLICATION">libedit</b>. This is based on NetBSD's
implementation and BSD licensed utilities now use it instead
of GNU <b class="APPLICATION">libreadline</b>.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=220370" target="_top" shape="rect">r220370</a>]</p></li>
<li><p>The <a href="http://www.FreeBSD.org/cgi/man.cgi?query=rtsold&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">rtsold</span>(8)</span></a> and <a href="http://www.FreeBSD.org/cgi/man.cgi?query=rtadvd&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">rtadvd</span>(8)</span></a> daemons
now support the RDNSS and DNSSL options described in RFC
6106, “IPv6 Router Advertisement Options for DNS
Configuration”. A <a href="http://www.FreeBSD.org/cgi/man.cgi?query=rtadvctl&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">rtadvctl</span>(8)</span></a> utility
to control the <a href="http://www.FreeBSD.org/cgi/man.cgi?query=rtadvd&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">rtadvd</span>(8)</span></a> daemon has
been added.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=222732" target="_top" shape="rect">r222732</a>, <a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=224006" target="_top" shape="rect">r224006</a>]</p></li>
<li><p>The <a href="http://www.FreeBSD.org/cgi/man.cgi?query=rtld&sektion=1&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">rtld</span>(1)</span></a> runtime
linker now supports shared objects as filters in ELF shared
libraries. Both standard and auxiliary filtering have been
supported. The <a href="http://www.FreeBSD.org/cgi/man.cgi?query=rtld&sektion=1&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">rtld</span>(1)</span></a> linker's
processing of a filter defers loading a filtee until a
filter symbol is referenced unless the <code class="VARNAME">LD_LOADFLTR</code> environment variable is
defined or a <tt class="LITERAL">-z loadfltr</tt> option was
specified when the filter was created.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=216695" target="_top" shape="rect">r216695</a>]</p></li>
<li><p>A bug in the <a href="http://www.FreeBSD.org/cgi/man.cgi?query=tftpd&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">tftpd</span>(8)</span></a> daemon has
been fixed. It had an interoperability issue when
transferring a large file.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=224536" target="_top" shape="rect">r224536</a>]</p></li>
<li><p>The <a href="http://www.FreeBSD.org/cgi/man.cgi?query=utmp&sektion=5&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">utmp</span>(5)</span></a> user
accounting database has been replaced by <a href="http://www.FreeBSD.org/cgi/man.cgi?query=utmpx&sektion=3&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">utmpx</span>(3)</span></a>. User
accounting utilities will now use <tt class="FILENAME">utmpx</tt> database files exclusively. The
<a href="http://www.FreeBSD.org/cgi/man.cgi?query=wtmpcvt&sektion=1&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">wtmpcvt</span>(1)</span></a> utility
can be used to convert <tt class="FILENAME">wtmp</tt> files
to the new format, making it possible to read them using the
updated utilities.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=202188" target="_top" shape="rect">r202188</a>]</p></li>
<li><p>The <a href="http://www.FreeBSD.org/cgi/man.cgi?query=zpool&sektion=8&manpath=FreeBSD+9.0-RELEASE" shape="rect">
<span class="CITEREFENTRY"><span class="REFENTRYTITLE">zpool</span>(8)</span></a>: utility
now supports a <tt class="COMMAND">zpool labelclear</tt>
command. This allows to wipe the label data from a drive
that is not active in a pool.[<a href="http://svn.freebsd.org/viewvc/base?view=revision&revision=224171" target="_top" shape="rect">r224171</a>]</p></li>
</ul>
<p>A list of all platforms currently under development can be found
on the <a href="../../platforms/index.html" shape="rect">Supported
Platforms</a> page.</p>
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