Hello Ravi, Just noticed that you are looking for a RHEL 7 guest agent instead of the Windows version. Not sure what the latest Linux release is but the standard repos currently provide release 2.3.0.
If you need a newer version you need to search for a 3th party rpm or compile it yourself from source. -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1477538 Title: Windows QEMU Guest Agent VSS Provider service stops during qemu backup Status in QEMU: Fix Released Bug description: I’m currently implementing the QEMU Guest Agent on all my KVM Windows guests. I’m using the stable VirtIO drivers and Guest agent from Fedora: https://fedoraproject.org/wiki/Windows_Virtio_Drivers Both the stable and latest release do provide Qemu Windows Guest agent 7.0.0.10. After the Guest agent installation I initially received VSS events with ID 8194: Volume Shadow Copy Service error: Unexpected error querying for the IVssWriterCallback interface. hr = 0x80070005, Access is denied. This is often caused by incorrect security settings in either the writer or requestor process. Operation: Gathering Writer Data Context: Writer Class Id: {e8132975-6f93-4464-a53e-1050253ae220} Writer Name: System Writer Writer Instance ID: {6c777a34-53dd-4fb3-a4c9-b85d7e183e27} I was able to fix this issue by adding local access permissions for the “Network Service” account at the Dcom security permissions: On the client computer from the Start Menu, select Run The Run dialog opens. In the Open field type dcomcnfg and click OK. The Component Services dialog opens. Expand Component Services, Computers, and My Computer. Right-click My Computer and click Properties on the pop-up menu. The My Computer Properties dialog opens. Click the COM Security tab. Under Access Permission click Edit Default. The Access Permissions dialog opens. From the Access Permissions dialog, add the "Network Service" account with Local Access allowed. Close all open dialogs. Now an initial backup runs without any errors but this is causing the QEMU Guest Agent VSS Provider service to stop running without any error in the event log. As a result a second backup will cause an error: MSDTC Client 2 with event ID: 4879: MSDTC encountered an error (HR=0x80000171) while attempting to establish a secure connection with system SERVERNAME. This is probably caused because the QEMU Guest Agent VSS Provider service isn’t running anymore. I can manually start the QEMU Guest Agent VSS Provider service but every backup is causing the service to stop. I’m seeing this behavior at all my Windows based guests running both Windows Server 2012 R2 and Windows Server 2008 R2. Since I can’t find any logging or troubleshooting possibilities for this particular service I'm open for suggestions how to troubleshoot this issue to receive detailed information about the reason why this services stops running during a backup. qemu-server 3.4-3 amd64 Guest agent 7.0.0.10 To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1477538/+subscriptions
