External/libvirt
1
0
Fork 0
mirror of https://gitlab.com/libvirt/libvirt.git synced 2024-12-25 07:05:28 +00:00
Code Issues Packages Projects Releases Wiki Activity
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.
10,798 Commits 67 Branches 629 Tags 865 MiB
C 94.8%
Python 2%
Meson 0.9%
Shell 0.8%
Dockerfile 0.6%
Other 0.8%
ac89a611d4
Go to file
Guannan Ren ac89a611d4 snapshot: fix rollback failure in transaction mode 
BZ:https://bugzilla.redhat.com/show_bug.cgi?id=843372
when qemu supports the 'transaction' monitor command,
and libvirt's --reuse-ext flag was not specified, libvirt created
a stub file with zero size in first place. After the failure of
QEMU transaction command performing qcow2 snapshots on more than
one drives, the stub file is left behind with non-empty
by the QEMU transaction command.
In order to unlink the file, the patch removes the file size checking.

Steps to reproduce the issue:
Steps:
 1, Create a qemu instance with two drive images of qcow2 type (root user)
    /usr/libexec/qemu-kvm -m 1024 -smp 1 -name "rhel6u1" \
      -drive file=/var/lib/libvirt/images/firstqcow2,if=none,id=drive-virtio-disk0,format=qcow2,cache=none
      -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
      -drive file=/var/lib/libvirt/images/secondqcow2,if=none,id=drive-virtio-disk1,format=qcow2,cache=none \
      -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x7,drive=drive-virtio-disk1,id=virtio-disk1 -qmp stdio

 2, Initialize qemu qmp
    {"execute":"qmp_capabilities"}

 3, Remove the second drive image file
    rm -f /var/lib/libvirt/images/secondqcow2

 4, Run 'transaction' command with snapshot qemu commands in.
    {"execute":"transaction","arguments":
      {"actions":
        [{"type":"blockdev-snapshot-sync","data":
          {"device":"drive-virtio-disk0","snapshot-file":"/var/lib/libvirt/images/firstqcow2-snapshot.img","format":"qcow2"}
         },
         {"type":"blockdev-snapshot-sync","data":
          {"device":"drive-virtio-disk1","snapshot-file":"/var/lib/libvirt/images/secondqcow2-snapshot.img","format":"qcow2"}
         }]
      },
   "id":"libvirt-6"}

 5, Got the error as follows:
    {"id": "libvirt-6",
      "error": {"class": "OpenFileFailed", "desc": "Could not open '/var/lib/libvirt/images/secondqcow2-snapshot.img'",
                "data": {"filename": "/var/lib/libvirt/images/secondqcow2-snapshot.img"}
               }
    }

 6, List first newly-created snapshot file:
    -rw-r--r--. 1 root root     262144 Sep 13 11:43 firstqcow2-snapshot.img
2012-09-14 11:18:19 +08:00
.gnulib@440a1dbe52 build: improved handling of <execinfo.h>, BSD <net/if.h> 2012-09-06 10:08:47 -06:00
build-aux Remove tabs from all perl files & enforce this 2012-07-30 13:09:57 +01:00
daemon list: Implemente RPC calls for virConnectListAllInterfaces 2012-09-12 15:36:56 +08:00
docs doc: update usb redirection filter infomation on formatdomain.html 2012-09-13 17:22:43 +08:00
examples examples: Fix event detail printing in python test 2012-09-07 09:38:22 +02:00
gnulib build: fix fresh checkout on RHEL5 2012-04-19 17:11:43 -06:00
include list: Define new API virConnectListAllInterfaces 2012-09-12 15:19:46 +08:00
m4 build: fix build on older gcc 2012-09-07 14:15:22 -06:00
po Release of libvirt-0.10.1 2012-08-31 20:41:06 +08:00
python list: Expose virConnectListAllInterfaces to Python binding 2012-09-12 15:37:09 +08:00
src snapshot: fix rollback failure in transaction mode 2012-09-14 11:18:19 +08:00
tests parallels: implement containers creation 2012-09-13 21:19:58 +08:00
tools virsh: Fix version numbers in comments 2012-09-13 16:59:12 +08:00
.dir-locals.el build: avoid tabs that failed syntax-check 2012-09-06 09:43:46 -06:00
.gitignore Introduce a test suite for the JSON monitor 2012-09-07 13:18:09 +01:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.mailmap build: fix author of previous commit 2012-08-09 15:39:34 -06:00
AUTHORS Pass a correct pointer type to localtime_r(3). 2012-09-04 17:20:08 -06:00
autobuild.sh Switch automated builds to use Mingw64 toolchain instead of Mingw32 2012-06-25 10:41:10 +01:00
autogen.sh Allow NOCONFIGURE=1 to make autogen.sh skip ./configure 2012-06-25 10:41:10 +01:00
bootstrap maint: regenerate bootstrap 2012-07-27 09:34:04 -06:00
bootstrap.conf build: improved handling of <execinfo.h>, BSD <net/if.h> 2012-09-06 10:08:47 -06:00
cfg.mk maint: fix missing spaces in message 2012-09-12 11:55:29 -06:00
ChangeLog-old virterror.c: Fix several spelling mistakes 2012-02-03 11:32:51 -07:00
configure.ac Look in Debian's multiarch libs too 2012-09-13 22:42:35 +02:00
COPYING.LIB remove all trailing blank lines 2009-07-16 15:06:42 +02:00
HACKING build: avoid dirty docs on fresh bootstrap 2012-09-11 15:26:10 -06:00
libvirt.pc.in build: silence warning from autoconf 2012-05-30 09:22:02 -06:00
libvirt.spec.in Fix RPM spec conditional when %{rhel} is not defined 2012-09-07 16:45:50 +01:00
Makefile.am Switch automated builds to use Mingw64 toolchain instead of Mingw32 2012-06-25 10:41:10 +01:00
Makefile.nonreentrant Ban use of all inet_* functions 2010-10-22 11:59:23 +01:00
mingw-libvirt.spec.in parallels: add driver skeleton 2012-08-01 11:44:26 +08:00
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>