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a9c53462fb
If the firewalld backend wasn't available and libvirt decides to try
setting up a "direct" backend, it checks for the presence of iptables,
ip6tables, and ebtables. If they are not found, a message like this is logged:
error : virFirewallValidateBackend:193 : direct firewall backend
requested, but /usr/sbin/ip6tables is not available:
No such file or directory
But then at a later time if an attempt is made to use the virFirewall
API, failure will be indicated with:
error : virFirewallApply:936 : out of memory
This patch changes virFirewallApply to first check if a firewall
backend hadn't been successfully setup, and logs a slightly more
informative message in that case:
error : virFirewallApply:940 : internal error:
Failed to initialize a valid firewall backend
This resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1223876
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>