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f2fc1eee4c
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Eric Blake f2fc1eee4c snapshot: ABI stability must include memory sizing 
Commit 973fcd8f introduced the ability for qemu to reject snapshot
reversion on an ABI incompatibility; but the very example that was
first proposed on-list[1] as a demonstration of an ABI incompatibility,
namely that of changing the max memory allocation, was not being
checked for, resulting in a cryptic failure when running with larger
max mem than what the snapshot was created with:
error: operation failed: Error -22 while loading VM state

This commit merely protects the three variables within mem that are
referenced by qemu_command.c, rather than all 7 (the other 4 variables
affect cgroup handling, but as far as I can tell, have no visible effect
to the qemu guest).  This also affects migration and save file handling,
which are other places where we perform ABI compatibility checks.

[1] https://www.redhat.com/archives/libvir-list/2010-December/msg00331.html

* src/conf/domain_conf.c (virDomainDefCheckABIStability): Add
memory sizing checks.
2011-09-14 09:56:30 -06:00
.gnulib@da1717b7f9 maint: update to latest gnulib 2011-09-08 14:36:46 +01:00
daemon Do not log invalid operations in libvirtd logs 2011-09-13 18:24:13 +08:00
docs Remove two references to files not generated 2011-09-14 22:57:46 +08:00
examples snapshot: better events when starting paused 2011-09-02 10:00:06 -06:00
gnulib freebsd: Fix build problem due to picking up the wrong libvirt.h 2011-07-29 07:35:54 -06:00
include snapshot: new APIs for inspecting snapshot object 2011-09-08 13:15:13 +01:00
m4 tests: Lower stack usage below 4096 bytes 2011-04-30 19:59:52 +02:00
po hyperv: Add basic driver for Microsoft Hyper-V 2011-08-26 17:52:55 +02:00
python qemu_api: Update Makefile to generate libvirtmod_qemu lib 2011-09-14 11:38:59 +08:00
src snapshot: ABI stability must include memory sizing 2011-09-14 09:56:30 -06:00
tests tests: avoid memory leak on testTLSSessionInit 2011-09-08 11:03:34 +01:00
tools xml: Clean up rest of virtual XML document names for XML strings 2011-09-14 09:09:04 -06:00
.dir-locals.el maint: let emacs avoid tabs in rng files 2011-08-13 08:56:26 -06:00
.gitignore maint: ignore generated files 2011-09-14 09:30:33 -06:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.mailmap Change my email domain 2011-09-01 16:13:34 -06:00
AUTHORS virnetsocket: Pass KRB5CCNAME env variable 2011-09-09 15:59:26 +02:00
autobuild.sh Remove the Open Nebula driver 2011-03-28 14:09:11 +01:00
autogen.sh build: avoid problems with autogen.sh runs from tarball 2011-02-12 06:28:28 -07:00
bootstrap build: fix compilation on mingw64 2011-08-19 07:20:10 -06:00
bootstrap.conf Add API for duplicating a socket/client file descriptor 2011-08-15 15:21:26 +02:00
cfg.mk make: Fix 'make syntax-check' failing. 2011-09-14 08:35:25 -06:00
ChangeLog-old generate ChangeLog from git logs into distribution tarball 2009-07-08 16:17:51 +02:00
configure.ac storage: Add mkfs and libblkid to build system 2011-09-02 21:16:50 +08:00
COPYING.LIB remove all trailing blank lines 2009-07-16 15:06:42 +02:00
HACKING build: rename files.h to virfile.h 2011-07-21 10:34:51 -06:00
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 qemu_api: Update libvirt spec file 2011-09-14 11:39:02 +08:00
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 snapshot: update rng to support full domain in xml 2011-09-03 08:12:13 -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 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>