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Libvirt provides a portable, long term stable C API for managing the virtualization technologies provided by many operating systems. It includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER Hypervisor.
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Laine Stump f367cd1388 qemu: increase the timeout before sending SIGKILL to qemu process 
The current default method of terminating the qemu process is to send
a SIGTERM, wait for up to 1.6 seconds for it to cleanly shutdown, then
send a SIGKILL and wait for up to 1.4 seconds more for the process to
terminate. This is problematic because occasionally 1.6 seconds is not
long enough for the qemu process to flush its disk buffers, so the
guest's disk ends up in an inconsistent state.

Since this only occasionally happens when the timeout prior to SIGKILL
is 1.6 seconds, this patch increases that timeout to 10 seconds. At
the very least, this should reduce the occurrence from "occasionally"
to "extremely rarely". (Once SIGKILL is sent, it waits another 5
seconds for the process to die before returning).

Note that in the cases where it takes less than this for qemu to
shutdown cleanly, libvirt will *not* wait for any longer than it would
without this patch - qemuProcessKill polls the process and returns as
soon as it is gone.
2012-02-15 13:57:15 -05:00
.gnulib@e9e8aba12a Update gnulib to fix mingw64 compilation errors 2012-02-01 17:37:45 -07:00
daemon Allow polkit auth for VNC and SSH users 2012-02-07 11:59:35 -05:00
docs Install API XML desc to a standard location 2012-02-14 16:42:02 +00:00
examples maint: consolidate several .gitignore files 2012-02-03 15:27:16 -07:00
gnulib build: update to latest gnulib 2012-01-12 15:47:54 -07:00
include maint: consolidate several .gitignore files 2012-02-03 15:27:16 -07:00
m4 build: silence some compiler warnings from gnulib 2012-01-19 13:14:10 -07:00
po Release of libvirt-0.9.10 2012-02-13 22:31:31 +08:00
python python: make other APIs share common {get, set}PyVirTypedParameter 2012-02-10 17:17:18 -07:00
src qemu: increase the timeout before sending SIGKILL to qemu process 2012-02-15 13:57:15 -05:00
tests Revert "qemu: add ibmvscsi controller model" 2012-02-13 21:37:03 +08:00
tools qemu: make block io tuning smarter 2012-02-13 10:34:25 -07:00
.dir-locals.el maint: let emacs avoid tabs in rng files 2011-08-13 08:56:26 -06:00
.gitignore maint: Add test output files to .gitignore 2012-02-06 18:27:40 +01:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.mailmap maint: prune duplicate listings in AUTHORS 2012-02-03 09:56:45 -07:00
AUTHORS Update myself in AUTHORS 2012-02-06 23:39:18 +08:00
autobuild.sh Disable python explicitly in mingw32 autobuild 2011-12-19 13:44:18 +00:00
autogen.sh build: allow for local gnulib diffs 2011-11-09 09:03:33 -07:00
bootstrap Update gnulib to fix mingw64 compilation errors 2012-02-01 17:37:45 -07:00
bootstrap.conf Replace hashing algorithm with murmurhash 2012-01-26 14:18:53 +00:00
cfg.mk python: use libvirt_util to avoid raw free 2012-02-03 10:41:47 -07:00
ChangeLog-old virterror.c: Fix several spelling mistakes 2012-02-03 11:32:51 -07:00
configure.ac Release of libvirt-0.9.10 2012-02-13 22:31:31 +08:00
COPYING.LIB remove all trailing blank lines 2009-07-16 15:06:42 +02:00
HACKING Document STREQ_NULLABLE and STRNEQ_NULLABLE 2011-10-06 16:50:38 +02:00
libvirt.pc.in Fix typos in API XML file paths 2012-02-15 11:29:38 +00:00
libvirt.spec.in Fix typos in API XML file paths 2012-02-15 11:29:38 +00:00
Makefile.am maint: add missing copyright notices 2011-07-28 15:01:17 -06:00
Makefile.nonreentrant Ban use of all inet_* functions 2010-10-22 11:59:23 +01:00
mingw32-libvirt.spec.in Fix typos in API XML file paths 2012-02-15 11:29:38 +00:00
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

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>