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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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755b53f946
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Daniel P. Berrange 755b53f946 Avoid blocking all APIs during incoming migration 
During incoming migration the QEMU monitor is not able to be
used. The incoming migration code did not keep hold of the
job lock because migration is split across multiple API calls.
This meant that further monitor commands on the guest would
hang until migration finished with no timeout.

In this change the qemuDomainMigratePrepare method sets the
job flag just before it returns. The qemuDomainMigrateFinish
method checks for this job flag & clears it once done. This
prevents any use of the monitor between prepare+finish steps.

The qemuDomainGetJobInfo method is also updated to refresh
the job elapsed time. This means that virsh domjobinfo can
return time data during incoming migration

* src/qemu/qemu_driver.c: Keep a job active during incoming
  migration. Refresh job elapsed time when returning job info
2010-06-25 14:39:58 +01:00
.gnulib@1629006348 build: fix some mingw issues 2010-06-10 06:05:31 -06:00
build-aux build: update gnulib 2010-03-26 19:16:37 +01:00
daemon Don't leak open fd to virsh in libvirt-guests init script 2010-06-22 17:48:14 +02:00
docs esx: Add support for the controller element 2010-06-24 14:56:04 +02:00
examples maint: simplify some ignore files 2010-06-15 07:31:10 -06:00
include libvirt: introduce domainCreateWithFlags API 2010-06-15 07:32:41 -06:00
m4 build: don't use "test cond1 -o cond2": it's not portable 2010-03-25 09:28:24 +01:00
po esx: Add read-only storage pool access 2010-05-26 12:01:27 +02:00
proxy build: fix up some compiler flags 2010-05-17 09:12:42 -06:00
python Add missing parameter in python Disk IO error callback 2010-06-25 14:39:37 +01:00
src Avoid blocking all APIs during incoming migration 2010-06-25 14:39:58 +01:00
tests esx: Add support for the controller element 2010-06-24 14:56:04 +02:00
tools virsh: document attach-disk better 2010-06-23 08:35:40 -06:00
.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
.mailmap avoid syntax-check failure 2010-06-06 10:27:28 +02:00
.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 bridge_driver.c: fix file description 2010-06-23 08:18:57 -06:00
autobuild.sh autobuild.sh: avoid bashism 2010-06-04 10:03:52 -06:00
autogen.sh build: improve check for out-of-date .gnulib submodule 2010-04-02 15:49:32 -06:00
bootstrap build: fix some mingw issues 2010-06-10 06:05:31 -06:00
bootstrap.conf build: fix some mingw issues 2010-06-10 06:05:31 -06:00
cfg.mk build: fix VPATH 'make syntax-check' 2010-06-01 16:34:25 -06:00
ChangeLog-old generate ChangeLog from git logs into distribution tarball 2009-07-08 16:17:51 +02:00
configure.ac add 802.1Qbh and 802.1Qbg handling 2010-06-02 21:35:22 -04:00
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 Fix libvirt-guests init script 2010-05-28 18:00:53 +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 build: fix some mingw issues 2010-06-10 06:05:31 -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>