<div dir="ltr"><div class="gmail_default" style="font-family:courier new,monospace"><div class="gmail_default" style="font-family:courier new,monospace">Hi,<br><br><div class="gmail_default" style="font-family:courier new,monospace"> [Rephrasing my earlier post with more clarity.]<br> <br> I need to work with "guest-fsfreeze-*" commands in Windows 2008 guest VM (Host is CentOS 6.4) to quisce the applications. <br><br></div><div class="gmail_default" style="font-family:courier new,monospace"><u>Windows 2008 Guest Machine</u><br><br> 1. Windows 2008 is running following services<br></div><div class="gmail_default" style="font-family:courier new,monospace"> - QEMU Guest Agent<br></div><div class="gmail_default" style="font-family:courier new,monospace"> - QEMU Guest Agent VSS Provider<br></div><div class="gmail_default" style="font-family:courier new,monospace"> <br></div><div class="gmail_default" style="font-family:courier new,monospace"> 2. C:\> vssadmin list providers<br> ...<br></div><div class="gmail_default" style="font-family:courier new,monospace"> Provider name: 'QEMU Guest Agent VSS Provider<br> </div><div class="gmail_default" style="font-family:courier new,monospace"> ....<br></div><div class="gmail_default" style="font-family:courier new,monospace"> Version: 0.12.1<br></div><div class="gmail_default" style="font-family:courier new,monospace"> <br> Provider name: 'Microsoft Software Shadow Copy provider 1.0'<br> ....<br></div><div class="gmail_default" style="font-family:courier new,monospace"> Version: 1.0.0.7<br> </div><div class="gmail_default" style="font-family:courier new,monospace"><br><br></div><div class="gmail_default" style="font-family:courier new,monospace"><u>Host (CentOS 6.4)<br></u> <br></div><div class="gmail_default" style="font-family:courier new,monospace"> When "guest-fsfreeze-*" commands are invoked from host, response received from guest is "This is not supported". Since "QEMU Guest Agent VSS Provider" was already running in Guest VM, I was expecting these commands to succeed and quisce Windows applications, but they were reported as unsupported.<br><br> [root@sdsr720-14 Downloads]# virsh qemu-agent-command vm_win_06 '{ "execute": "guest-fsfreeze-status"}'<br>{"error":{"class":"Unsupported","desc":"this feature or command is not currently supported","data":{}}}<br> <br>[root@sdsr720-14 Downloads]# virsh qemu-agent-command vm_win_06 '{ "execute": "guest-fsfreeze-freeze"}'<br>{"error":{"class":"Unsupported","desc":"this feature or command is not currently supported","data":{}}}<br> <br></div><div class="gmail_default" style="font-family:courier new,monospace"><u>Is missing qga-vss.dll the reason?<br></u><br></div><div class="gmail_default" style="font-family:courier new,monospace">I searched my system for this dll and could not find it and suspected that missing qga-vss.dll is the reason for this. I took suggestions from following post which advised to cross-compile qemu code to get qga-vss.dll<br> <br></div><div class="gmail_default" style="font-family:courier new,monospace"><a rel="nofollow" href="http://lists.gnu.org/archive/html/qemu-devel/2013-02/msg01963.html">http://lists.gnu.org/archive/html/qemu-devel/2013-02/msg01963.html</a>.<br> </div> <div class="gmail_default" style="font-family:courier new,monospace"> </div></div><div class="gmail_default" style="font-family:courier new,monospace"><br> But I faced a lot of issues while building i686-w64-mingw32-* in CentOS 6.4 and had to eventually give up building i686-w64-mingw32-* and move to getting pre-compiled QEMU guest agent (with VSS support), which I can install on Windows to quisce the applications.<br><br> </div><div class="gmail_default" style="font-family:courier new,monospace"><u>What I need<br> </u><br></div><div class="gmail_default" style="font-family:courier new,monospace">If I can get pre-compiled qga-vss.dll, I can copy it to Windows8 guest VM and hopefully work with guest-fsfreeze-* commands to quisce the applications.<br><br></div><div class="gmail_default" style="font-family:courier new,monospace">Can somebody point me to pre-compiled QEMU guest agent with VSS support (and qga-vss.dll) so that I can quisce the Windows guest VM applications?<br></div><div class="gmail_default" style="font-family:courier new,monospace"><br></div><div class="gmail_default" style="font-family:courier new,monospace"><div class="gmail_default" style="font-family:courier new,monospace"> Regards,<br></div>~Puneet</div></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Jul 8, 2014 at 3:27 AM, Eric Blake <span dir="ltr"><<a href="mailto:eblake@redhat.com" target="_blank">eblake@redhat.com</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">On 07/07/2014 02:32 AM, Puneet Bakshi wrote:<br> > Hi,<br> ><br> > I want to work with "guest-fsfreeze-*" commands in Windows 2008 guest VM.<br> > Host is CentOS 6.4.<br> ><br> > Windows 2008 is running QEMU VSS provider. When "guest-fsfreeze-*" commands<br> > are invoked from host, response received is "This is not supported".<br> ><br> > I am following<br> > <a href="http://lists.gnu.org/archive/html/qemu-devel/2013-02/msg01963.html" target="_blank">http://lists.gnu.org/archive/html/qemu-devel/2013-02/msg01963.html</a>.<br> <br> </div></div>The libvirt list is the wrong place to be asking this question; qemu is<br> better.<br> <br> The spice-devel list has done some pre-packaged virt stack builds for<br> Windows; maybe they might be a better resource to ask (for example, see<br> <a href="http://lists.freedesktop.org/archives/spice-devel/2014-February/016100.html" target="_blank">http://lists.freedesktop.org/archives/spice-devel/2014-February/016100.html</a>)<br> - but I don't follow that list closely enough to know if they have<br> pre-built qga.<br> <br> You could always download the mingw cross-compiler and try to build qga<br> yourself, instead of relying on someone else to provide a pre-built binary.<br> <span class="HOEnZb"><font color="#888888"><br> --<br> Eric Blake eblake redhat com <a href="tel:%2B1-919-301-3266" value="+19193013266">+1-919-301-3266</a><br> Libvirt virtualization library <a href="http://libvirt.org" target="_blank">http://libvirt.org</a><br> <br> </font></span></blockquote></div><br></div>