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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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93500040f9
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Chris Lalancette 93500040f9 Fix up basic migration. 
Basic live migration was broken by the commit that added
non-shared block support in two ways:

1)  It added a virCheckFlags() to doNativeMigrate().  Besides
the fact that typical usage of virCheckFlags() is in driver
entry points, and doNativeMigrate() is not an entry point,
it was missing important flags like VIR_MIGRATE_LIVE.  Move
the virCheckFlags to the top-level qemuDomainMigratePrepare2
and friends.

2)  It also added a memory leak in qemuMonitorTextMigrate()
by not freeing the memory used by virBufferContentAndReset().
This is fixed by storing the pointer in a temporary variable
and freeing it at the end.

With this patch in place, normal live migration works again.

v3: Instead of the churn for virCheckFlagsUI and UL, instead
always promote flags to an unsigned long and always use %lx
for the fprintf.
v2: Add back flags check, which required adding virCheckFlagsUI
and virCheckFlagsUL

Signed-off-by: Chris Lalancette <clalance@redhat.com>
2010-05-25 10:48:10 -04:00
.gnulib@28e58203a7 build: update gnulib 2010-05-11 10:03:48 -06:00
build-aux build: update gnulib 2010-03-26 19:16:37 +01:00
daemon libvirtd: start each diagnostic with "argv0: " 2010-05-22 23:09:30 +02:00
docs nwfilter: documentation 2010-05-25 07:09:31 -04:00
examples nwfilter: let qemu's after-migration packet pass 2010-04-27 14:50:35 -04:00
include Allow nwfilter functions to be compiled with C++ 2010-05-25 09:29:33 -04:00
m4 build: don't use "test cond1 -o cond2": it's not portable 2010-03-25 09:28:24 +01:00
po maint: update po/POTFILES.in 2010-05-20 21:36:26 +02:00
proxy build: fix up some compiler flags 2010-05-17 09:12:42 -06:00
python Fix up the python bindings for snapshotting. 2010-05-20 13:49:38 -04:00
src Fix up basic migration. 2010-05-25 10:48:10 -04:00
tests build: Distribute the whole tests/qemuhelpdata directory 2010-05-21 20:08:57 +02:00
tools Add VIR_STORAGE_POOL_INACCESSIBLE to denote inaccessible storage pools 2010-05-18 01:34:34 +02:00
.gitignore build: distribute missing file 2010-05-19 16:28:49 -06:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.hgignore Add qemuhelptest to .*ignore files 2009-06-16 14:06:48 +00:00
.x-sc_avoid_ctype_macros exempt gnulib from ctype-macros prohibition 2008-10-28 17:36:31 +00:00
.x-sc_avoid_if_before_free avoid a "make syntax-check" failure 2009-07-09 20:00:37 +02:00
.x-sc_avoid_write Fully asynchronous monitor I/O processing 2009-11-10 13:27:18 +00:00
.x-sc_m4_quote_check syntax-check: enable more checks 2009-02-03 13:08:36 +00:00
.x-sc_prohibit_always_true_header_tests build: update gnulib 2010-05-06 14:35:38 -06:00
.x-sc_prohibit_asprintf add .x-sc_prohibit_asprintf 2008-12-23 13:40:42 +00:00
.x-sc_prohibit_gethostby Various syntax-check fixes. 2009-10-26 10:34:05 +01:00
.x-sc_prohibit_gethostname Add a new syntax-check rule for gethostname. 2009-10-26 10:34:27 +01:00
.x-sc_prohibit_gettext_noop build: fix syntax-check problems 2010-04-12 16:43:05 -06:00
.x-sc_prohibit_have_config_h maint: sync from coreutils 2009-01-29 18:06:19 +00:00
.x-sc_prohibit_HAVE_MBRTOWC maint: sync from coreutils 2009-01-29 18:06:19 +00:00
.x-sc_prohibit_nonreentrant Tighten up nonreentrant syntax-check. 2009-10-26 10:33:42 +01:00
.x-sc_prohibit_readlink Add a rule to check for uses of readlink. 2010-01-22 09:42:35 -05:00
.x-sc_prohibit_strcmp exempt gnulib/ from "make syntax-check" strcmp prohibition 2008-05-14 21:18:27 +00:00
.x-sc_prohibit_strcmp_and_strncmp Ignore docs/ directory for strcmp() syntax check 2009-11-23 11:58:13 +00:00
.x-sc_prohibit_strncpy Various syntax-check fixes. 2009-10-26 10:34:05 +01:00
.x-sc_prohibit_test_minus_ao build: fix syntax-check problems 2010-04-12 16:43:05 -06:00
.x-sc_prohibit_VIR_ERR_NO_MEMORY Various syntax-check fixes. 2009-10-26 10:34:05 +01:00
.x-sc_require_config_h Various syntax-check fixes. 2009-10-26 10:34:05 +01:00
.x-sc_require_config_h_first Misc syntax-check fixes 2009-09-21 14:41:47 +01:00
.x-sc_trailing_blank build: exempt *.ico files from the trailing blank check 2008-10-16 13:28:07 +00:00
.x-sc_unmarked_diagnostics build: import latest gnulib 2010-04-02 10:18:55 -06:00
acinclude.m4 build: fix up some compiler flags 2010-05-17 09:12:42 -06:00
AUTHORS maint: update AUTHORS with recent contributors 2010-05-24 16:30:39 -06:00
autobuild.sh autobuild.sh: provide default prefix 2010-04-30 11:13:06 -06:00
autogen.sh build: improve check for out-of-date .gnulib submodule 2010-04-02 15:49:32 -06:00
bootstrap maint: relax git minimum version 2010-02-24 14:29:27 -05:00
bootstrap.conf build: update gnulib 2010-05-11 10:03:48 -06:00
cfg.mk Add simple bitmap operations to utils 2010-05-21 11:29:03 -06:00
ChangeLog-old generate ChangeLog from git logs into distribution tarball 2009-07-08 16:17:51 +02:00
configure.ac build: avoid compile failure on linux kernels older than 2.6.19 2010-05-17 16:50:36 +02:00
COPYING.LIB remove all trailing blank lines 2009-07-16 15:06:42 +02:00
HACKING docs: hacking: explain why using curly braces well is important 2010-05-04 15:41:21 +02:00
libvirt.pc.in * libvirt.pc.in: applied patch from Daniel Berrange to fix --cflags 2006-03-24 13:18:12 +00:00
libvirt.spec.in Init script for handling guests on shutdown/boot 2010-05-21 09:33:30 +02:00
Makefile.am build: fix syntax-check problems 2010-04-12 16:43:05 -06:00
Makefile.nonreentrant syntax-check: enable prohibit_nonreentrant 2009-02-05 16:28:41 +00:00
mingw32-libvirt.spec.in mingw32-libvirt.spec: bring up to date 2010-05-07 13:11:25 -06:00
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 Remove all trailing blanks; turn on the rule to detect them. 2008-02-05 19:27:37 +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>