> For the complete documentation index, see [llms.txt](https://book.bsdcn.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.bsdcn.org/release/freebsd-9.2-release/9.2.md).

# FreeBSD 9.2-RELEASE 发行说明（2013 年 9 月 30 日）

* 原文链接：[FreeBSD 9.2-RELEASE Release Notes](https://www.freebsd.org/releases/9.2R/relnotes/)

## 发布亮点

9.2-RELEASE 的亮点包括以下内容：

* 添加对 [vlan(4)](https://man.freebsd.org/cgi/man.cgi?query=vlan\&sektion=4\&format=html) 的 [rarpd(8)](https://man.freebsd.org/cgi/man.cgi?query=rarpd\&sektion=8\&format=html) 支持。\[[r245076](http://svn.freebsd.org/viewvc/base?view=revision\&revision=245076)]
* [xz(1)](https://man.freebsd.org/cgi/man.cgi?query=xz\&sektion=1\&format=html) 更新至版本 5.0.4。\[[r245128](http://svn.freebsd.org/viewvc/base?view=revision\&revision=245128)]
* 现在 ZFS 文件系统支持固态硬盘上的 TRIM。默认启用了 ZFS TRIM 支持。\[[r251419](http://svn.freebsd.org/viewvc/base?view=revision\&revision=251419)] 以下是新增的可调参数：
  * `vfs.zfs.trim.enabled`：启用 ZFS TRIM
  * `vfs.zfs.trim.max_interval`：TRIM 队列处理的最大间隔时间（秒）
  * `vfs.zfs.trim.timeout`：延迟 TRIM 操作的最大时间（秒）
  * `vfs.zfs.trim.txg_delay`：延迟 TRIM 操作的最大 TXG 数
* 所有架构的 **GENERIC** 内核配置中都已移除驱动程序 [firewire(4)](https://man.freebsd.org/cgi/man.cgi?query=firewire\&sektion=4\&format=html)。\[[r246321](http://svn.freebsd.org/viewvc/base?view=revision\&revision=246321)]
* [awk(1)](https://man.freebsd.org/cgi/man.cgi?query=awk\&sektion=1\&format=html) 更新至版本 20121220。\[[r246373](http://svn.freebsd.org/viewvc/base?view=revision\&revision=246373)]
* 对 amd64 和 i386 架构的 **GENERIC** 内核配置添加了驱动程序 [virtio(4)](https://man.freebsd.org/cgi/man.cgi?query=virtio\&sektion=4\&format=html)。\[[r247306](http://svn.freebsd.org/viewvc/base?view=revision\&revision=247306)]
* ZFS 文件系统现在支持 lz4 压缩。\[[r247309](http://svn.freebsd.org/viewvc/base?view=revision\&revision=247309)]
* [oce(4)](https://man.freebsd.org/cgi/man.cgi?query=oce\&sektion=4\&format=html) 更新至版本 4.6.95.0。\[[r248062](http://svn.freebsd.org/viewvc/base?view=revision\&revision=248062)]
* **OpenSSL** 更新至版本 0.9.8y。\[[r248272](http://svn.freebsd.org/viewvc/base?view=revision\&revision=248272)]
* [bsdinstall(8)](https://man.freebsd.org/cgi/man.cgi?query=bsdinstall\&sektion=8\&format=html) 安装程序现在支持通过 HTTP 进行安装。\[[r248313](http://svn.freebsd.org/viewvc/base?view=revision\&revision=248313)]
* 默认在 **GENERIC** 内核中启用 **DTrace** 钩子。\[[r249549](http://svn.freebsd.org/viewvc/base?view=revision\&revision=249549)]
* **DTrace** 更新至版本 1.9.0。\[[r249856](http://svn.freebsd.org/viewvc/base?view=revision\&revision=249856)]
* **Sendmail** 更新至版本 8.14.7。\[[r249865](http://svn.freebsd.org/viewvc/base?view=revision\&revision=r249865), [r249866](http://svn.freebsd.org/viewvc/base?view=revision\&revision=r249866), [r249867](http://svn.freebsd.org/viewvc/base?view=revision\&revision=r249867), [r249875](http://svn.freebsd.org/viewvc/base?view=revision\&revision=r249875)]
* **OpenSSH** 更新至版本 6.2p2。\[[r251135](http://svn.freebsd.org/viewvc/base?view=revision\&revision=251135)]
* [less(1)](https://man.freebsd.org/cgi/man.cgi?query=less\&sektion=1\&format=html) 更新至版本 458。\[[r251154](http://svn.freebsd.org/viewvc/base?view=revision\&revision=251154)]
* 向 [cam(4)](https://man.freebsd.org/cgi/man.cgi?query=cam\&sektion=4\&format=html) 添加 ATA 直通支持。\[[r251302](http://svn.freebsd.org/viewvc/base?view=revision\&revision=251302)]
* 为 [hostapd(8)](https://man.freebsd.org/cgi/man.cgi?query=hostapd\&sektion=8\&format=html) 实现新的 [rc.conf(5)](https://man.freebsd.org/cgi/man.cgi?query=rc.conf\&sektion=5\&format=html) 语法。新格式为：`ifconfig_wlanX="HOSTAP"`，其中 `X` 表示 [wlan(4)](https://man.freebsd.org/cgi/man.cgi?query=wlan\&sektion=4\&format=html) 接口。\[[r252748](http://svn.freebsd.org/viewvc/base?view=revision\&revision=252748)]
* 从 `head/` 导入未映射的 I/O 支持。\[[r251897](http://svn.freebsd.org/viewvc/base?view=revision\&revision=251897)]
* 从 `head/` 合并 [nvme(4)](https://man.freebsd.org/cgi/man.cgi?query=nvme\&sektion=4\&format=html)。\[[r252222](http://svn.freebsd.org/viewvc/base?view=revision\&revision=252222)]
* 添加对 Chelsio 40G T5 的支持。\[[r252495](http://svn.freebsd.org/viewvc/base?view=revision\&revision=252495)]
* 添加了可调参数，以将初始 TCP 拥塞窗口从 4 个段增加到 10 个段。可以通过将 `net.inet.tcp.experimental.initcwnd10=1` 添加到 [sysctl.conf(5)](https://man.freebsd.org/cgi/man.cgi?query=sysctl.conf\&sektion=5\&format=html) 来启用此参数。该参数在 FreeBSD 9.2-RELEASE 中默认关闭。\[[r252789](http://svn.freebsd.org/viewvc/base?view=revision\&revision=252789)]
* 更新驱动程序 [ixgbe(4)](https://man.freebsd.org/cgi/man.cgi?query=ixgbe\&sektion=4\&format=html)。\[[r252898](http://svn.freebsd.org/viewvc/base?view=revision\&revision=252898)]
* 更新 Intel e1000 驱动程序。\[[r252899](http://svn.freebsd.org/viewvc/base?view=revision\&revision=252899)]
* 添加对 HighPoint DC 系列数据中心 HBA（DC7280 和 R750）的支持。\[[r252903](http://svn.freebsd.org/viewvc/base?view=revision\&revision=252903)]
* 添加服务特定的 [setfib(1)](https://man.freebsd.org/cgi/man.cgi?query=setfib\&sektion=1\&format=html) 支持。通过在 [rc.conf(5)](https://man.freebsd.org/cgi/man.cgi?query=rc.conf\&sektion=5\&format=html) 中设置 `<name>_fib` 来启用此功能。\[[r253233](http://svn.FreeBSD.org/viewvc/base?view=revision\&revision=253233)]
* 更新 [cxgbe(4)](https://man.freebsd.org/cgi/man.cgi?query=cxgbe\&sektion=4\&format=html) 支持的设备。\[[r253776](http://svn.freebsd.org/viewvc/base?view=revision\&revision=253776)]
* 从 **GENERIC** 内核配置中移除 [ctl(4)](https://man.freebsd.org/cgi/man.cgi?query=ctl\&sektion=4\&format=html)。\[[r253860](http://svn.freebsd.org/viewvc/base?view=revision\&revision=253860)]


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