Hyper-V Backup Fail to Prepare, fail to serialize VM, fail to obtain descriptions of class~Msvm_VirtualEthernetSwitch
I am running build 11.5.37975, as the newest release will not install on the management node and it looks as if this is expected with no current resolution:
"Release notes for Acronis Backup & Recovery 11.5 Update 2
Release date: December 9, 2013
Build: 38350
Known issues
This section describes issues that are currently known and provides solutions to avoid the issues where possible.
Installation
[ABR-40749] In some cases, Acronis Backup & Recovery 11.5 installation freezes on Windows Server 2012 R2."
I have tried several times several ways but no success so I continue to run the second latest build.
MY PROBLEM IS:
I have got the backup manager machine up and running and taking backups of all but one VM in a specific job. All other vm's backup successfully. This is a DC machine that has a second DC with identical settings that is backing up perfectly which seems strange. This is the error log output from the fail on this particular VM:
Failed to execute the command.
Additional info:
--------------------
Error code: 41
Module: 307
LineInfo: e6792a5ee190dda6
Fields: $module : agent_protection_addon_vs_38350
Message: Failed to execute the command.
--------------------
Error code: 32834
Module: 114
LineInfo: c35c04057128fda9
Fields: $module : disk_bundle_vs_38350
Message: Backup of virtual machines has failed.
--------------------
Error code: 32853
Module: 114
LineInfo: c35c04057128fdeb
Fields: $module : disk_bundle_vs_38350
Message: Not all virtual machines have been backed up.
--------------------
Error code: 32852
Module: 114
LineInfo: c35c04057128fe3d
Fields: $module : disk_bundle_vs_38350
Message: Failed to back up virtual machine 'RDC1'.
--------------------
Error code: 32786
Module: 114
LineInfo: 28314c961de7d2c2
Fields: $module : disk_bundle_vs_38350
Message: Failed to prepare for backing up.
--------------------
Error code: 114
Module: 83
LineInfo: 179fcce6ee7090f5
Fields: $module : disk_bundle_vs_38350
Message: Failed to serialize object 'VirtualMachine'.
--------------------
Error code: 1010
Module: 20
LineInfo: c523d9a02d03d645
Fields: $module : hv_srv_vs_38350
Message: Failed to obtain descriptions of class '\\VHOST01\root\virtualization\v2:Msvm_VirtualEthernetSwitch.CreationClassName="Msvm_VirtualEthernetSwitch",Name="8DF3D40F-2010-4958-9751-786E0C860756"'.
--------------------
Error code: 65520
Module: 0
LineInfo: bd28fdbd64edb8ea
Fields: code : 2147749890, $module : hv_srv_vs_38350
Message: Unknown Win32 error
--------------------
I have read the post from December about redoing the network connections but that was a different error and less specific which is why I thought I'd post here to see if there were any other thoughts.
Cheers,
M
Hey Fedor,
Thanks so much for responding to my post, I appreciate it. Well noted on the build, I was in fact able to extract each module to get upgraded except the storage node and the management server. The installation hangs on those.
If I may ask, what part of the log tells you the WMI provider returns the error? Again, thanks for responding.
M
The one before last message -
Message: Failed to obtain descriptions of class '\\VHOST01\root\virtualization\v2:Msvm_VirtualEthernetSwitch.CreationClassName="Msvm_VirtualEthernetSwitch",Name="8DF3D40F-2010-4958-9751-786E0C860756"'.
works with root\virtualization WMI namespace and the last one with
Fields: code : 2147749890
- there 2147749890 is a Windows error WBEM_E_NOT_FOUND.