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Stefan Berger b7d00de2bd Fix libvirt upgrade path when nwfilter is used 
Between revision 65fb9d49 and before this patch, an upgrade of libvirt while
VMs are running and instantiating iptables filtering rules due to nwfilter
rules, may leave stray iptables rules behind when shutting VMs down.
Left-over iptables rules may look like this:

Chain FP-vnet0 (1 references)
target     prot opt source               destination         
DROP       tcp  --  0.0.0.0/0            0.0.0.0/0            tcp spt:122
ACCEPT     all  --  0.0.0.0/0            0.0.0.0/0           

[...]

Chain libvirt-out (1 references)
target     prot opt source               destination         
FO-vnet0   all  --  0.0.0.0/0            0.0.0.0/0           [goto]  PHYSDEV match --physdev-out vnet0



The reason is that the recent nwfilter code only removed filtering rules in
the libvirt-out chain that contain the --physdev-is-bridged parameter.
Older rules didn't match and were not removed.

Note that the user-defined chain FO-vnet0 could not be removed due to the
reference from the rule in libvirt-out.

Often the work around may be done through

service iptables restart
kill -SIGHUP $(pidof libvirtd)

This patch now also removes older libvirt versions' iptables rules.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
 		2013-02-15 21:33:37 -05:00
.gnulib@819b1c38b9 maint: update to latest gnulib 2013-02-01 09:24:00 -07:00
build-aux Document bracket whitespace rules & add syntax-check rule 2012-11-02 14:00:32 +00:00
daemon build: Regenerate man pages on version bump 2013-01-29 13:23:19 +01:00
docs S390: Documentation for CCW address type 2013-02-11 16:27:45 -07:00
examples Remove more trailing semicolons in Python files 2013-02-07 19:52:44 +01:00
gnulib maint: update to latest gnulib 2013-01-02 09:38:30 -07:00
include Introduce API virNodeDeviceLookupSCSIHostByWWN 2013-02-12 00:23:57 +08:00
m4 Fix typo in configure.ac causing $LIBS to gain a copy of $CFLAGS 2013-02-05 18:04:16 +00:00
po Release of libvirt-1.0.2 2013-01-30 10:42:05 +01:00
python Check if classes are derived from object 2013-02-11 18:00:10 +01:00
src Fix libvirt upgrade path when nwfilter is used 2013-02-15 21:33:37 -05:00
tests storage: test backing chain traversal 2013-02-15 16:07:01 -07:00
tools virsh-volume.c: Switch to c99 initialization of vshCmdInfo 2013-02-12 17:50:22 +01:00
.dir-locals.el build: avoid tabs that failed syntax-check 2012-09-06 09:43:46 -06:00
.gitignore storage: test backing chain traversal 2013-02-15 16:07:01 -07:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.mailmap Autogenerate AUTHORS 2012-10-19 12:44:56 -04:00
AUTHORS.in Add John Ferlan to the committers list 2013-02-05 10:59:32 -05:00
COPYING.LIB remove all trailing blank lines 2009-07-16 15:06:42 +02:00
ChangeLog-old virterror.c: Fix several spelling mistakes 2012-02-03 11:32:51 -07:00
HACKING Turn virSecurityManager into a virObjectLockable 2013-02-11 12:33:41 +00:00
Makefile.am build: Fix AUTHORS generation 2012-12-17 21:17:55 +01:00
Makefile.nonreentrant Ban use of all inet_* functions 2010-10-22 11:59:23 +01:00
README Correct typos in the documentation (Atsushi SAKAI) 2008-01-24 10:15:13 +00:00
README-hacking maint: relax git minimum version 2010-02-24 14:29:27 -05:00
TODO Update todo list file to point at bugzilla/website 2010-10-13 16:45:26 +01:00
autobuild.sh Switch automated builds to use Mingw64 toolchain instead of Mingw32 2012-06-25 10:41:10 +01:00
autogen.sh build: fix incremental autogen.sh when no AUTHORS is present 2012-12-03 14:59:09 -07:00
bootstrap maint: update to latest gnulib 2013-02-01 09:24:00 -07:00
bootstrap.conf build: more mingw fixes 2013-02-15 15:45:52 -07:00
cfg.mk hacking: Add some details to handle Valgrind output 2013-02-07 14:08:14 -05:00
configure.ac Release of libvirt-1.0.2 2013-01-30 10:42:05 +01:00
libvirt.pc.in build: silence warning from autoconf 2012-05-30 09:22:02 -06:00
libvirt.spec.in spec: Fix minor changelog issues 2013-02-05 10:00:32 +01:00
mingw-libvirt.spec.in spec: indent %if to make it easier to see conditions 2013-01-21 10:36:14 -07:00
run.in Add a virtlockd client as a lock driver impl 2012-12-13 15:26:57 +00:00

README 

         LibVirt : simple API for virtualization

  Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.

Daniel Veillard <veillard@redhat.com>