freebsd with flexible iflib nic queues
e07ca0423d
written to disk with newfs(8) and newfs_msdosfs(8). When iterating through snapshot builds in serial, it is possible for a build failure to leave stale md(4) devices behind, in some cases, they could have a UFS or MSDOS filesystem label assigned. If the md(4) is not destroyed (or not able to be destroyed, as has happened recently due to my own fault), the filesystem label that already exists can interfere with a new md(4) device that is targeted to have the same label. This behavior, although admittedly a logic error in the wrapper build scripts, has caused intermittent reports (in particular with the armv6 builds) of missing UFS/MSDOSFS labels, causing the image to fallback to the mountroot prompt. This appears to only happen when the backing md(4) device is destroyed before the calling umount(8) on the target mount, after which the UFS/MSDOSFS label persists. The workaround is this: If EVERYTHINGISFINE is set to non-empty value, check for an existing ufs/rootfs and msdosfs/MSDOSBOOT filesystem label in arm_create_disk(), and rm(1) them if they exist. The EVERYTHINGISFINE variable is chosen because it is used in exactly one other place - release/Makefile.mirrors - and there are big scary warnings at the top of that file as well that it should *not* be used under normal circumstances. This should not destroy a build machine that also uses '/dev/ufs/rootfs' as the UFS label, and I have verified in extensive local testing that the destroyed label is recreated when the md(4) is unmounted/mounted, but this really should not be enabled by anyone. Having said all that, I absolutely *do* plan MFC this to stable/10 for the 10.2-RELEASE cycle, as so far, I have only observed this behavior on stable/10, but this is a temporary solution until I can unravel all of the failure paths to properly trap them. MFC after: 3 days Sponsored by: The FreeBSD Foundation |
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| bin | ||
| cddl | ||
| contrib | ||
| crypto | ||
| etc | ||
| games | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| lib | ||
| libexec | ||
| release | ||
| rescue | ||
| sbin | ||
| secure | ||
| share | ||
| sys | ||
| targets | ||
| tests | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| .arcconfig | ||
| .arclint | ||
| COPYRIGHT | ||
| LOCKS | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| ObsoleteFiles.inc | ||
| README | ||
| UPDATING | ||
This is the top level of the FreeBSD source directory. This file was last revised on: $FreeBSD$ For copyright information, please see the file COPYRIGHT in this directory (additional copyright information also exists for some sources in this tree - please see the specific source directories for more information). The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree. See build(7) and http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html for more information, including setting make(1) variables. The `buildkernel` and `installkernel` targets build and install the kernel and the modules (see below). Please see the top of the Makefile in this directory for more information on the standard build targets and compile-time flags. Building a kernel is a somewhat more involved process. See build(7), config(8), and http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html for more information. Note: If you want to build and install the kernel with the `buildkernel` and `installkernel` targets, you might need to build world before. More information is available in the handbook. The kernel configuration files reside in the sys/<arch>/conf sub-directory. GENERIC is the default configuration used in release builds. NOTES contains entries and documentation for all possible devices, not just those commonly used. Source Roadmap: --------------- bin System/user commands. cddl Various commands and libraries under the Common Development and Distribution License. contrib Packages contributed by 3rd parties. crypto Cryptography stuff (see crypto/README). etc Template files for /etc. games Amusements. gnu Various commands and libraries under the GNU Public License. Please see gnu/COPYING* for more information. include System include files. kerberos5 Kerberos5 (Heimdal) package. lib System libraries. libexec System daemons. release Release building Makefile & associated tools. rescue Build system for statically linked /rescue utilities. sbin System commands. secure Cryptographic libraries and commands. share Shared resources. sys Kernel sources. tests Regression tests which can be run by Kyua. See tests/README for additional information. tools Utilities for regression testing and miscellaneous tasks. usr.bin User commands. usr.sbin System administration commands. For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html