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Re: [Qemu-devel] [RFC PATCH v3 00/11] qemu-ga: fsfreeze on Windows using
From: |
Libaiqing |
Subject: |
Re: [Qemu-devel] [RFC PATCH v3 00/11] qemu-ga: fsfreeze on Windows using VSS |
Date: |
Fri, 31 May 2013 01:30:47 +0000 |
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
>
- Re: [Qemu-devel] [RFC PATCH v3 00/11] qemu-ga: fsfreeze on Windows using VSS, (continued)
Re: [Qemu-devel] [RFC PATCH v3 00/11] qemu-ga: fsfreeze on Windows using VSS, Libaiqing, 2013/05/27
Re: [Qemu-devel] [RFC PATCH v3 00/11] qemu-ga: fsfreeze on Windows using VSS,
Libaiqing <=