Copyright © 2014 The FreeBSD Documentation Project
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Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this document, and the FreeBSD Project was aware of the trademark claim, the designations have been followed by the “™” or the “®” symbol.
This document lists errata items for FreeBSD 10.1-RELEASE, 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 FreeBSD.
This errata document for FreeBSD 10.1-RELEASE will be maintained until the release of FreeBSD 10.2-RELEASE.
This errata document contains “late-breaking news” about FreeBSD 10.1-RELEASE 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version of this errata document actually distributed with the release (for example, on a CDROM distribution) will be out of date by definition, but other copies are kept updated on the Internet and should be consulted as the “current errata” for this release.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 http://www.FreeBSD.org/releases/, plus any sites which keep up-to-date mirrors of this location.
Source and binary snapshots of FreeBSD 10.1-STABLE also contain up-to-date copies of this document (as of the time of the snapshot).
For a list of all FreeBSD CERT security advisories, see http://www.FreeBSD.org/security/ or ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/.
FreeBSD/i386 10.1-RELEASE 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 causes various errors and makes FreeBSD 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 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
[2014-04-03 update] It has been reported that instability may be present on virtual machines running on other hypervisors, such as Xen or KVM.
FreeBSD/i386 10.1-RELEASE configured with
a multi-disk ZFS dataset (mirror, raidz1, raidz2, raidz3)
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 i386-specific tuning
requirements for general workloads, using ZFS with the
FreeBSD/i386 GENERIC
kernel
is strongly discouraged.
It is extremely important to take note that, by
default, freebsd-update(8) will install the
GENERIC
kernel configuration, and
as such, freebsd-update(8) consumers are strongly
encouraged to avoid FreeBSD-provided kernel binary upgrades
with such configurations.
Although there is slight change in how the crash
manifests on FreeBSD/i386 between 10.0-RELEASE and
10.1-RELEASE, and given the date of the
/usr/src/UPDATING
entry, there is no
evidence suggesting this is a regression between
FreeBSD 10.0-RELEASE and FreeBSD 10.1-RELEASE
directly.
Due to an incompatibility between bsdconfig(8) and pkg(8) version 1.3, packages included on the FreeBSD dvd installer will not be recognized by bsdconfig(8).
To install packages from the dvd1.iso
installer, create the /dist
target directory, and
manually mount the dvd1.iso
ISO:
#
mkdir -p /dist#
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 pkg(8) will use the correct
repository metadata.
If using sh(1):
#
export REPOS_DIR=/dist/packages/repos
If using csh(1):
#
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 pkg(8) from the ISO, and install required packages:
#
pkg bootstrap#
pkg installxorg-server
xorg
gnome2
[...]
This file, and other release-related documents, can be downloaded from http://www.FreeBSD.org/releases/.
For questions about FreeBSD, read the documentation before contacting <questions@FreeBSD.org>.
All users of FreeBSD 10.1-STABLE should subscribe to the <stable@FreeBSD.org> mailing list.
For questions about this documentation, e-mail <doc@FreeBSD.org>.