Copyright © 2014 The FreeBSD Documentation +
Copyright © 2014 The FreeBSD Documentation Project
FreeBSD is a registered trademark of the FreeBSD Foundation.
Intel, Celeron, EtherExpress, i386, i486, Itanium, Pentium, and Xeon are trademarks or registered @@ -13,7 +13,7 @@ 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, + “®” 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 @@ -49,7 +49,34 @@ boot
Note that the foll
/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.
This file, and other release-related documents, + 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.
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