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&os; &release.prev; Errata The &os; Project $FreeBSD$ - 2016 + 2017 The &os; Documentation Project &tm-attrib.freebsd; &tm-attrib.intel; &tm-attrib.sparc; &tm-attrib.general; This document lists errata items for &os; &release.prev;, containing significant information discovered after the release or too late in the release cycle to be otherwise included in the release documentation. This information includes security advisories, as well as news relating to the software or documentation that could affect its operation or usability. An up-to-date version of this document should always be consulted before installing this version of &os;. This errata document for &os; &release.prev; will be maintained until the release of &os; &release.next;. Introduction This errata document contains late-breaking news about &os; &release.prev; Before installing this version, it is important to consult this document to learn about any post-release discoveries or problems that may already have been found and fixed. Any version of this errata document actually distributed with the release (for example, on a CDROM distribution) will be out of date by definition, but other copies are kept updated on the Internet and should be consulted as the current errata for this release. These other copies of the errata are located at , plus any sites which keep up-to-date mirrors of this location. Source and binary snapshots of &os; &release.branch; also contain up-to-date copies of this document (as of the time of the snapshot). For a list of all &os; CERT security advisories, see . Security Advisories &security; Errata Notices &errata; Open Issues &os;/&arch.i386; &release.prev; running as a guest operating system on VirtualBox can have a problem with disk I/O access. It depends on some specific hardware configuration and does not depend on a specific version of VirtualBox or host operating system. It has been reported that instability may be present on virtual machines running on other hypervisors, such as Xen or KVM. It causes various errors and makes &os; quite unstable. Although the cause is still unclear, disabling unmapped I/O works as a workaround. To disable it, choose Escape to loader prompt in the boot menu and enter the following lines from &man.loader.8; prompt, after an OK: set vfs.unmapped_buf_allowed=0 boot Note that the following line has to be added to /boot/loader.conf after a boot. It disables unmapped I/O at every boot: vfs.unmapped_buf_allowed=0 &os;/&arch.i386; &release.prev; installed on ZFS may crash during boot when the ZFS pool mount is attempted while booting an unmodified GENERIC kernel. As described in /usr/src/UPDATING entry 20121223, rebuilding the kernel with options KSTACK_PAGES=4 has been observed to resolve the boot-time crash. This, however, is not an ideal solution for inclusion in the GENERIC kernel configuration, as increasing KSTACK_PAGES implicitly decreases available usermode threads in an environment that is already resource-starved. Taking into account the heavy resource requirements of ZFS, in addition to the &arch.i386;-specific tuning requirements for general workloads, using ZFS with the &os;/&arch.i386; GENERIC kernel is strongly discouraged. If installing &os;/&arch.i386; on ZFS, it is possible to configure the system after installation to increase the KSTACK_PAGES. When prompted by &man.bsdinstall.8; to perform additional post-installation configuration to the system, select [ YES ]. This procedure requires the system sources available locally. If the System source code distribution was not selected during installation, it can be obtained using svnlite: &prompt.root; mkdir -p /usr/src &prompt.root; svnlite co svn://svn.freebsd.org/base/releng/10.2 /usr/src Build the kernel-toolchain required to rebuild the kernel: &prompt.root; make -C /usr/src kernel-toolchain Next, create a kernel configuration file to increase the KSTACK_PAGES option: &prompt.root; printf "include GENERIC\noptions KSTACK_PAGES=4\n" > /usr/src/sys/i386/conf/ZFS Then build and install the ZFS kernel: &prompt.root; make -C /usr/src buildkernel KERNCONF=ZFS &prompt.root; make -C /usr/src installkernel KERNCONF=ZFS It is extremely important to take note that, by default, &man.freebsd-update.8; will install the GENERIC kernel configuration, and as such, &man.freebsd-update.8; consumers are strongly encouraged to avoid &os;-provided kernel binary upgrades with such configurations. Due to an incompatibility between &man.bsdconfig.8; and &man.pkg.8;, packages included on the &os; dvd installer will not be recognized by &man.bsdconfig.8;. To install packages from the dvd1.iso installer, create the /dist target directory, and manually mount the dvd1.iso ISO: &prompt.root; mkdir -p /dist &prompt.root; mount -t cd9660 /dev/cd0 /dist Be sure to use the correct /dev device path for the dvd1.iso ISO installer. Next, set REPOS_DIR to the path of the repos/ directory within the installer so &man.pkg.8; will use the correct repository metadata. If using &man.sh.1;: &prompt.root; export REPOS_DIR=/dist/packages/repos If using &man.csh.1;: &prompt.root; setenv REPOS_DIR /dist/packages/repos Keep in mind that REPOS_DIR will need to be set again after the current shell session is terminated, if continuing to use the packages provided on the dvd1.iso installer. Finally, bootstrap &man.pkg.8; from the ISO, and install required packages: &prompt.root; pkg bootstrap &prompt.root; pkg install xorg-server xorg gnome3 [...] An issue was discovered where the &man.netstat.1; -s option will cause a segmentation fault on systems with IPSEC compiled into the kernel. The issue was resolved in the stable/10 branch, and an Errata Notice is planned after &release.prev; is released. [2015-08-19] Resolved as FreeBSD-EN-15:12. An issue was discovered that causes &man.make.1; to generate noisy output when doing source-based upgrades from &os; 9.3 and earlier. The issue was reported in PR 202277, and after investigation and determining the issue does not cause source-based upgrades to fail, a post-release Errata Notice is planned. [2015-08-19] Resolved as FreeBSD-EN-15:11. An issue with &os; virtual machines with vagrant was discovered that affects the VirtualBox where the virtual machine will not start on the initial boot invoked with vagrant up. The issue is due to the virtual machine MAC being unset, as &os; does not provide a default Vagrantfile. It has been observed, however, that a subsequent invocation of vagrant up will allow the virtual machine to successfully boot, allowing access via vagrant ssh. [2015-08-16] An error was discovered in the release notes for &os; &release.prev; regarding the drm device driver. The entry for r282199 states the driver was updated to match the version &linux; 3.8.13 version, however the entry should have noted the change affects device-independent code, and does not bring the drm driver fully in line with the stated &linux; version. Late-Breaking News No news.
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&os; &release.current; README The &os; Project $FreeBSD$ 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 + 2015 + 2016 + 2017 The &os; Documentation Project &tm-attrib.freebsd; &tm-attrib.intel; &tm-attrib.opengroup; &tm-attrib.sparc; &tm-attrib.general; This document gives a brief introduction to &os; &release.current;. It includes some information on how to obtain &os;, a listing of various ways to contact the &os; Project, and pointers to some other sources of information. Introduction This distribution is a &release.type; of &os; &release.current;, the latest point along the &release.branch; branch. About &os; &os; is an operating system based on 4.4 BSD Lite for AMD64 and Intel EM64T based PC hardware (&arch.amd64;), Intel, AMD, Cyrix or NexGen x86 based PC hardware (&arch.i386;), Intel Itanium Processor based computers (&arch.ia64;), NEC PC-9801/9821 series PCs and compatibles (&arch.pc98;), and &ultrasparc; machines (&arch.sparc64;). Versions for the &arm; (&arch.arm;), &mips; (&arch.mips;), and &powerpc; (&arch.powerpc;) architectures are currently under development as well. &os; works with a wide variety of peripherals and configurations and can be used for everything from software development to games to Internet Service Provision. This release of &os; contains everything you need to run such a system, including full source code for the kernel and all utilities in the base distribution. With the source distribution installed, you can literally recompile the entire system from scratch with one command, making it ideal for students, researchers, or users who simply want to see how it all works. A large collection of third-party ported software (the Ports Collection) is also provided to make it easy to obtain and install all your favorite traditional &unix; utilities for &os;. Each port consists of a set of scripts to retrieve, configure, build, and install a piece of software, with a single command. Over &os.numports; ports, from editors to programming languages to graphical applications, make &os; a powerful and comprehensive operating environment that extends far beyond what's provided by many commercial versions of &unix;. Most ports are also available as pre-compiled packages, which can be quickly installed from the installation program. Target Audience This &release.type; is aimed primarily at early adopters and various other users who want to get involved with the ongoing development of &os;. While the &os; development team tries its best to ensure that each &release.type; works as advertised, &release.branch; is very much a work-in-progress. The basic requirements for using this &release.type; are technical proficiency with &os; and an understanding of the ongoing development process of &os; &release.branch; (as discussed on the &a.stable;). For those more interested in doing business with &os; than in experimenting with new &os; technology, formal releases (such as &release.prev.stable;) are frequently more appropriate. Releases undergo a period of testing and quality assurance checking to ensure high reliability and dependability. This &release.type; is aimed primarily at early adopters and various other users who want to get involved with the ongoing development of &os;. While the &os; development team tries its best to ensure that each &release.type; works as advertised, &release.branch; is very much a work-in-progress. The basic requirements for using this &release.type; are technical proficiency with &os; and an understanding of the ongoing development process of &os; &release.branch; (as discussed on the &a.stable;). For those more interested in doing business with &os; than in experimenting with new &os; technology, formal releases (such as &release.prev.stable;) are frequently more appropriate. Releases undergo a period of testing and quality assurance checking to ensure high reliability and dependability. This &release.type; of &os; is suitable for all users. It has undergone a period of testing and quality assurance checking to ensure the highest reliability and dependability. Obtaining &os; &os; may be obtained in a variety of ways. This section focuses on those ways that are primarily useful for obtaining a complete &os; distribution, rather than updating an existing installation. CDROM and DVD &os; -RELEASE distributions may be ordered on CDROM or DVD from several publishers. This is frequently the most convenient way to obtain &os; for new installations, as it provides a convenient way to quickly reinstall the system if necessary. Some distributions include some of the optional, precompiled packages from the &os; Ports Collection, or other extra material. A list of the CDROM and DVD publishers known to the project are listed in the Obtaining &os; appendix to the Handbook. FTP You can use FTP to retrieve &os; and any or all of its optional packages from ftp://ftp.FreeBSD.org/, which is the official &os; release site, or any of its mirrors. Lists of locations that mirror &os; can be found in the FTP Sites section of the Handbook. Finding a close (in networking terms) mirror from which to download the distribution is highly recommended. Additional mirror sites are always welcome. Contact freebsd-admin@FreeBSD.org for more details on becoming an official mirror site. You can also find useful information for mirror sites at the Mirroring &os; article. Mirrors generally contain the ISO images generally used to create a CDROM of a &os; release. They usually also contain floppy disk images (for applicable platforms), as well as the files necessary to do an installation over the network. Finally mirrors sites usually contain a set of packages for the most current release. Contacting the &os; Project Email and Mailing Lists For any questions or general technical support issues, please send mail to the &a.questions;. If tracking the &release.branch; development efforts, you must join the &a.stable;, in order to keep abreast of recent developments and changes that may affect the way you use and maintain the system. Being a largely-volunteer effort, the &os; Project is always happy to have extra hands willing to help—there are already far more desired enhancements than there is time to implement them. To contact the developers on technical matters, or with offers of help, please send mail to the &a.hackers;. Please note that these mailing lists can experience significant amounts of traffic. If you have slow or expensive mail access, or are only interested in keeping up with major &os; events, you may find it preferable to subscribe instead to the &a.announce;. All of the mailing lists can be freely joined by anyone wishing to do so. Visit the &os; Mailman Info Page. This will give you more information on joining the various lists, accessing archives, etc. There are a number of mailing lists targeted at special interest groups not mentioned here; more information can be obtained either from the Mailman pages or the mailing lists section of the &os; Web site. Do not send email to the lists asking to be subscribed. Use the Mailman interface instead. Submitting Problem Reports Suggestions, bug reports and contributions of code are always valued—please do not hesitate to report any problems you may find. Bug reports with attached fixes are of course even more welcome. The preferred method to submit bug reports from a machine with Internet connectivity is to use the Bugzilla bug tracker. Problem Reports (PRs) submitted in this way will be filed and their progress tracked; the &os; developers will do their best to respond to all reported bugs as soon as possible. A list of all active PRs is available on the &os; Web site; this list is useful to see what potential problems other users have encountered. Note that &man.send-pr.1; is deprecated. For more information, Writing &os; Problem Reports, available on the &os; Web site, has a number of helpful hints on writing and submitting effective problem reports. Further Reading There are many sources of information about &os;; some are included with this distribution, while others are available on-line or in print versions. Release Documentation A number of other files provide more specific information about this &release.type; distribution. These files are provided in various formats. Most distributions will include both ASCII text (.TXT) and HTML (.HTM) renditions. Some distributions may also include other formats such as Portable Document Format (.PDF). README.TXT: This file, which gives some general information about &os; as well as some cursory notes about obtaining a distribution. RELNOTES.TXT: The release notes, showing what's new and different in &os; &release.current; compared to the previous release (&os; &release.prev;). HARDWARE.TXT: The hardware compatibility list, showing devices with which &os; has been tested and is known to work. ERRATA.TXT: Release errata. Late-breaking, post-release information can be found in this file, which is principally applicable to releases (as opposed to snapshots). It is important to consult this file before installing a release of &os;, as it contains the latest information on problems which have been found and fixed since the release was created. On platforms that support &man.bsdinstall.8; (currently &arch.amd64;, &arch.i386;, &arch.ia64;, &arch.pc98;, and &arch.sparc64;), these documents are generally available via the Documentation menu during installation. Once the system is installed, you can revisit this menu by re-running the &man.bsdinstall.8; utility. It is extremely important to read the errata for any given release before installing it, to learn about any late-breaking news or post-release problems. The errata file accompanying each release (most likely right next to this file) is already out of date by definition, but other copies are kept updated on the Internet and should be consulted as the current errata for this release. These other copies of the errata are located at &url.base;/releases/ (as well as any sites which keep up-to-date mirrors of this location). Manual Pages As with almost all &unix; like operating systems, &os; comes with a set of on-line manual pages, accessed through the &man.man.1; command or through the hypertext manual pages gateway on the &os; Web site. In general, the manual pages provide information on the different commands and APIs available to the &os; user. In some cases, manual pages are written to give information on particular topics. Notable examples of such manual pages are &man.tuning.7; (a guide to performance tuning), &man.security.7; (an introduction to &os; security), and &man.style.9; (a style guide to kernel coding). Books and Articles Two highly-useful collections of &os;-related information, maintained by the &os; Project, are the &os; Handbook and &os; FAQ (Frequently Asked Questions document). On-line versions of the Handbook and FAQ are always available from the &os; Documentation page or its mirrors. If you install the doc distribution set, you can use a Web browser to read the Handbook and FAQ locally. In particular, note that the Handbook contains a step-by-step guide to installing &os;. A number of on-line books and articles, also maintained by the &os; Project, cover more-specialized, &os;-related topics. This material spans a wide range of topics, from effective use of the mailing lists, to dual-booting &os; with other operating systems, to guidelines for new committers. Like the Handbook and FAQ, these documents are available from the &os; Documentation Page or in the doc distribution set. A listing of other books and documents about &os; can be found in the bibliography of the &os; Handbook. Because of &os;'s strong &unix; heritage, many other articles and books written for &unix; systems are applicable as well, some of which are also listed in the bibliography. Acknowledgments &os; represents the cumulative work of many hundreds, if not thousands, of individuals from around the world who have worked countless hours to bring about this &release.type;. For a complete list of &os; developers and contributors, please see Contributors to &os; on the &os; Web site or any of its mirrors. Special thanks also go to the many thousands of &os; users and testers all over the world, without whom this &release.type; simply would not have been possible.