Until now, vswitch.pic has been rebuilt whenever the schema changed. This
is OK when the E-R diagram would really change, but many changes to the
schema don't change the E-R diagram, and it surprises people when
vswitch.pic changes in such a situation. This commit fixes the problem.
Requested-by: Justin Pettit <jpettit@nicira.com>
This is intended to provide controllers enough information to determine
whether a switch is overloaded or busted, to enable them to spread load
fairly across a group of switches.
Feature #2421.
CC: Peter Balland <peter@nicira.com>
These utilities were useful when Nicira was building switches with 16x2 LCD
front panel displays, but they aren't useful for other environments and
even Nicira does not use that kind of switch any longer. So remove them
and all the build infrastructure on which they depended.
With GCC -Wno-unused by itself isn't enough to avoid "unused parameter"
warnings, since we also use -Wunused-parameter. We also need to check for
and use -Wno-unused-parameter.
Until now, the collection of vlog modules supported by a given OVS program
was not specific to that program. That means that, for example, even
though ovs-dpctl does not have anything to do with jsonrpc, it still has
a vlog module for it. This is confusing, at best.
This commit fixes the problem on some systems, in particular on ones that
use GCC and the GNU linker. It uses the feature of the GNU linker
described in its manual as:
If an orphaned section's name is representable as a C identifier then
the linker will automatically see PROVIDE two symbols: __start_SECNAME
and __end_SECNAME, where SECNAME is the name of the section. These
indicate the start address and end address of the orphaned section
respectively.
Systems that don't support these features retain the earlier behavior.
This commit also fixes the annoyance that modifying lib/vlog-modules.def
causes all sources files that #include "vlog.h" to recompile.
When we increment the Open vSwitch version number, we tend to forget to
update it in debian/changelog at the same time. Right now this gets
fixed up automatically at "make dist" time, but it's even better if we can
always have it be correct in the repository. This commit should help with
that, by making both "make" and "make dist" refuse to proceed if the
version number is out of sync.
Most of the timekeeping needs of OVS are simply to measure intervals,
which means that it is sensitive to changes in the clock. This commit
replaces the existing clocks with monotonic timers. An additional set
of wall clock timers are added and used in locations that need absolute
time.
Bug #1858
This merge is long overdue, simply because I forgot that there were
outstanding changes on "citrix" that had not yet been merged.
The important fix here is the addition of mlockall. This fixes some
bugs seen under stressful conditions in XenServer.
Commit 415f6c0b1 "stream-ssl: Make no-op reconfiguration cheap" caused
ovsdb-server to re-read its certificates and keys every 60 seconds just
in case they changed. However, doing this causes OpenSSL to drop its
connections. This commit solves the problem by making stream-ssl re-read
certificates and keys only if the files changed.
Bug #2535.
Reported-by: Ram Jothikumar <rjothikumar@nicira.com>
Our configure scripts were actually using Autoconf features introduced in
version 2.64 (e.g. AT_SKIP_IF, AT_CHECK_UNQUOTED), so we should not
claim 2.63 as prerequisite.
Reported-by: Andy Southgate <andy.southgate@citrix.com>
No conflicts, but lib/dpif.c needed a few changes since struct dpif's
member "class" was renamed to "dpif_class" in master since sflow was
branched off.
This module, which catches segmentation faults and prints a backtrace
before exiting, was useful for a while, but I believe that it has now
outlived its purpose. It is altogether better to have a core dump from
which one can extract much more information than a usually-poor backtrace,
and core dumps are much better integrated into a typical Unix system.
In addition, the "fault" module was of course not all that portable.
The C source and header files added in this commit is covered under the
InMon sFlow license at http://www.inmon.com/technology/sflowlicense.txt
The library requires -Wno-unused to compile without warnings, so this
commit adds that for building the sFlow code only. Automake can only
change compiler flags on a per-library or per-program basis, so sFlow
is built as a separate library.
The library will be used in upcoming commits.
On XenServer 5.5 we found that running 4 simultaneous vm-import operations
on iSCSI caused so much disk and cache activity that (we suspect) parts of
ovs-vswitchd were paged out to disk and were not paged back in for over
10 seconds, causing the XenServer to fall off the network and the XenCenter
connection to fail.
Locking ovs-vswitchd into memory appears to avoid this problem. Henrik
reports that, with memory locking, importing 11 VMs simultaneously
completed successfully.
Bug #2344.
I had thought that Automake was smart enough to ignore conditionals around
EXTRA_DIST, so that all files always got distributed regardless of whether
Automake conditionals were set. I was wrong.
This commit removes the --disable-userspace option to "configure", which
put a conditional around most of Makefile.am and thus unintentionally
caused most of the distribution to be left out if --disable-userspace was
specified. The alternative (fixing --disable-userspace) seems like too
much work--it would require pushing "if ENABLE_USERSPACE" down into lots
of subdirectory--and would be difficult to maintain.
Recent Debian kernel-header packages divide kernel headers into two
directories: the "common" headers that are not architecture-specific,
which go in a directory named like
/usr/src/kernel-headers-2.6.31-1-common,
and architecture-specific headers in a directory named, e.g.
/usr/src/kernel-headers-2.6.31-1-686.
OVS needs to look at the ones in the "common" directory as part of its
configuration process, but the build directory provided on --with-l26 is
the architecture-specific directory. We also need the
architecture-specific directory, since it is the one that we use as part
of the "make", so we can't simply make the user specify the common
directory on --with-l26. Furthermore, there is no easy-to-see link
between the two directories, except as part of the text in a Makefile,
which is not the easiest language to parse.
This commit attempts to kluge around the problem by using the Debian
directory naming. If the build directory does not contain the headers,
then we replace the last component of its name by "-common" and check
for the headers there. This is not ideal, but it does solve the actual
problem at hand.
Tested with Debian's linux-headers-2.6.31-1-686 and with a few older
sets of headers that do not use this scheme.
This merge took a little bit of care due to two issues:
- Crossport of "interface-reconfigure" fixes from master back to
citrix that had happened and needed to be canceled out of the merge.
- New script "refresh-xs-network-uuids" added on citrix branch that
needed to be moved from /root/vswitch/scripts to
/usr/share/vswitch/scripts.
I had thought that Automake was smart enough to ignore conditionals around
EXTRA_DIST, so that all files always got distributed regardless of whether
Automake conditionals were set. I was wrong.
This commit removes the --disable-userspace option to "configure", which
put a conditional around most of Makefile.am and thus unintentionally
caused most of the distribution to be left out if --disable-userspace was
specified. The alternative (fixing --disable-userspace) seems like too
much work--it would require pushing "if ENABLE_USERSPACE" down into lots
of subdirectory--and would be difficult to maintain.
Autotest doesn't provide a lot of benefit by itself but it does allow us
to easily put a wrapper around each test by using a macro to invoke it.
(To do that with the built-in Automake test framework you need to write
or generate a separate wrapper script for each test, which is a pain.)
The next commit will take advantage of this possibility by adding support
for code coverage analysis.
We've gone through a couple of iterations for names of these mailing
lists. Currently, there are three: announce, discuss, and git. There
are aliases that point "bugs" and "dev" to the "discuss" mailing list.
This commit drops the "ovs-" prefix to mailing lists, since we're not
using them.
The glibc 2.7 headers contain a bug that causes strtok_r() to segfault
in some circumstances. Until now, we have been working around this
problem at each invocation, but this depends on the programmer to remember
to do so each time.
This commit instead adds a shim that adds a work-around to the string.h
header itself, so that it is much more difficult to miss the workaround.
Now the Debian packaging is regularly tested via the autobuilder, so there
is less need to do it from "make distcheck", and not doing it saves time
there.
