Re: [Qemu-devel] [RFC PATCH v3 00/11] qemu-ga: fsfreeze on Windows using VSS

[Libaiqing]

Hi,
  Thanks for your advice,it works well when using prefix=x86_64-w64-mingw32-.
  The dlls may download from here: http://qemu.weilnetz.de/w64/dll/.
  
  One more question:
      Qemu-ga.exe can't run successfully under normal account which belongs to 
Administration group.
      Qemu-ga service can start successfully under this account after 
Administrator installed.
  
  The output is:
      1370307591.689600:critical:error opening path
      1370307591.705200:critical:error opening channel
      1370307591.720800:critical:failed to create guest agent channel
      1370307591.736400:critical:failed to initialize guest agent channel

  Could you give me some advise to debug this problem ? I can provide more 
information if need.

Regards,
baiqing


> -----Original Message-----
> From: Tomoki Sekiyama [mailto:address@hidden
> Sent: Friday, May 31, 2013 10:20 AM
> To: Libaiqing; address@hidden
> Cc: address@hidden; address@hidden;
> address@hidden; address@hidden; Seiji Aguchi; address@hidden;
> Haofeng
> Subject: RE: [Qemu-devel] [RFC PATCH v3 00/11] qemu-ga: fsfreeze on Windows
> using VSS
> 
> Hi Baiqing,
> 
> > Provider.dll is built with --cross-prefix=i686-w64-mingw32-, does it support
> 64-bit system?
> 
> No. The DLL is dynamic-linked to the VSS system component, so it must be built
> for the same architecture (32-bit (i686) or 64-bit (x86_64)) as the operating
> system you run.
> 
> Thanks,
> Tomoki Sekiyama
> 
> ________________________________________
> From: Libaiqing address@hidden
> Sent: Thursday, May 30, 2013 9:30 PM
> To: Tomoki Sekiyama; address@hidden
> Cc: address@hidden; address@hidden;
> address@hidden; address@hidden; Seiji Aguchi; address@hidden;
> Haofeng
> Subject: RE: [Qemu-devel] [RFC PATCH v3 00/11] qemu-ga: fsfreeze on Windows
> using VSS
> 
> Hi,
>   When installing the guest-agent on windows2008R2, an error occurs.
>   Executing command "qemu-ga.exe -s install",
>      the app popups a dialog box with the message:
> "CoCreateInstance(VSSCoordinator)failed.(Error:80010154)"
>      the commandline output is"Failed to
> pCatalog->InstallComponent.(Error:80110401) ......"
> 
>   Provider.dll is built with --cross-prefix=i686-w64-mingw32-, does it support
> 64-bit system?
>   I also found some info from ms webstie:
> http://msdn.microsoft.com/en-us/library/aa384627(v=vs.85).aspx
> 
>   Could you give me some advise to debug this problem ? I can provide more
> information if need.
> 
> Regards,
> baiqing
> > -----Original Message-----
> > From: address@hidden
> > [mailto:address@hidden On Behalf
> Of
> > Tomoki Sekiyama
> > Sent: Tuesday, May 21, 2013 11:34 PM
> > To: address@hidden
> > Cc: address@hidden; address@hidden;
> > address@hidden; address@hidden; address@hidden;
> > address@hidden
> > Subject: [Qemu-devel] [RFC PATCH v3 00/11] qemu-ga: fsfreeze on Windows
> > using VSS
> >
> > Hi,
> >
> > This patch series adds fsfreeze support for Windows qemu-guest-agent.
> >
> > changes from v2:
> >  - [06/11] Fix errors in Windows 7, reported by Li Baiqing
> >            (see below for details).
> >
> > changes from v1:
> >  - Fix out-tree build by stop using recursive Makefile
> >  - Added script to extract VSS SDK headers on POSIX systems using msitools
> >    (thanks Paolo)
> >  - Remove some unnecessary header files
> >
> > v2: http://lists.gnu.org/archive/html/qemu-devel/2013-04/msg02518.html
> >
> >
> > * Description
> >   In Windows, VSS (Volume Shadow Copy Service) provides a facility to
> >   quiesce filesystems and applications before disk snapshots are taken.
> >   This patch series implements "fsfreeze" command of qemu-ga using VSS.
> >
> >
> > * How to build & run qemu-ga with VSS support
> >
> >  - Download Microsoft VSS SDK from:
> >    http://www.microsoft.com/en-us/download/details.aspx?id=23490
> >
> >  - Setup the SDK
> >    scripts/extract-vsssdk-headers setup.exe (on POSIX-systems)
> >
> >  - Specify installed SDK directory to configure option as:
> >    ./configure -with-vss-sdk="path/to/VSS SDK"
> > --cross-prefix=i686-w64-mingw32-
> >
> >  - make qemu-ga.exe
> >
> >  - Install qemu-ga.exe, qga/vss-win32-provider/qga-provider.{dll,tlb}, and
> >    the other required mingw libraries into the same directory in guests
> >
> >  - Run `qemu-ga.exe -s install' and `net start qemu-ga' in the guests
> >
> >
> > * About errors in Windows 7 with patch v2
> >   VSS requires to write to snapshot volumes just before making them
> read-only
> >   at final commit phase. This feature is called `auto-recovery'
> >   (See
> >
> http://msdn.microsoft.com/en-us/library/windows/desktop/aa384651(v=vs.85)
> > .aspx#base.vssgloss_auto_recoved_shadow_copy for details).
> >
> >   Since qemu and libvirt don't have feature to handle writable snapshots,
> >   this patchset just disables auto-recovery by specifying
> >   VSS_VOLSNAP_ATTR_NO_AUTORECOVERY flag to SetContext.
> >   Unfortunately, this flag seems unsupported in Windows 7 or earlier.
> >   It tries to look up the snapshot volumes to write and fails in
> >   VSS_E_OBJECT_NOT_FOUND.
> >
> >   For fundamental resolution we need a framework for guests to query
> > snapshots
> >   and to mount them as writable snapshots, but we just ignore the error in
> >   this patchset.
> >
> > Any feedback are appliciated.
> >
> > ---
> > Tomoki Sekiyama (11):
> >       configure: Support configuring c++ compiler
> >       Fix errors and warnings while compiling with c++ compilier
> >       Add a script to extract VSS SDK headers on POSIX system
> >       qemu-ga: Add an configure option to specify path to Windows VSS
> SDK
> >       qemu-ga: Add Windows VSS provider to quiesce applications on
> fsfreeze
> >       qemu-ga: Add Windows VSS requester to quisce applications and
> > filesystems
> >       qemu-ga: call Windows VSS requester in fsfreeze command handler
> >       qemu-ga: install Windows VSS provider on `qemu-ga -s install'
> >       qemu-ga: Add VSS provider .tlb file in the repository
> >       QMP/qemu-ga-client: make timeout longer for guest-fsfreeze-freeze
> > command
> >       QMP/qmp.py: set locale for exceptions to display non-ascii messages
> > correctly
> >
> >
> >  .gitignore                              |    1
> >  Makefile                                |    3
> >  Makefile.objs                           |    2
> >  QMP/qemu-ga-client                      |    4
> >  QMP/qmp.py                              |    4
> >  configure                               |   59 ++++
> >  hmp.c                                   |    2
> >  hw/pci/pci.c                            |    2
> >  qga/Makefile.objs                       |    7
> >  qga/commands-win32.c                    |   74 ++++-
> >  qga/main.c                              |   41 +++
> >  qga/vss-win32-provider.h                |   26 ++
> >  qga/vss-win32-provider/Makefile.objs    |   25 ++
> >  qga/vss-win32-provider/install.cpp      |  494
> > +++++++++++++++++++++++++++++++
> >  qga/vss-win32-provider/provider.cpp     |  474
> > ++++++++++++++++++++++++++++++
> >  qga/vss-win32-provider/qga-provider.def |   10 +
> >  qga/vss-win32-provider/qga-provider.idl |   20 +
> >  qga/vss-win32-provider/qga-provider.tlb |  Bin
> >  qga/vss-win32-requester.cpp             |  404
> > +++++++++++++++++++++++++
> >  qga/vss-win32-requester.h               |   31 ++
> >  qga/vss-win32.h                         |   85 +++++
> >  rules.mak                               |    9 +
> >  scripts/extract-vsssdk-headers          |   25 ++
> >  scripts/qapi.py                         |    9 +
> >  24 files changed, 1796 insertions(+), 15 deletions(-)
> >  create mode 100644 qga/vss-win32-provider.h
> >  create mode 100644 qga/vss-win32-provider/Makefile.objs
> >  create mode 100644 qga/vss-win32-provider/install.cpp
> >  create mode 100644 qga/vss-win32-provider/provider.cpp
> >  create mode 100644 qga/vss-win32-provider/qga-provider.def
> >  create mode 100644 qga/vss-win32-provider/qga-provider.idl
> >  create mode 100644 qga/vss-win32-provider/qga-provider.tlb
> >  create mode 100644 qga/vss-win32-requester.cpp
> >  create mode 100644 qga/vss-win32-requester.h
> >  create mode 100644 qga/vss-win32.h
> >  create mode 100755 scripts/extract-vsssdk-headers
> >