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Ticket Resolution Summary Owner Reporter
#13186 duplicate Changing VM Group causes the .vbox snapshot statefile value to become corrupt, making snapshots invalid Jacob Klein
Description

Changing VM Group causes the .vbox snapshot statefile value to become corrupt, making snapshots invalid

Basically, I have some VMs that have several sequential snapshots taken. And sometimes I move those VMs into a group, and sometimes I move them out of a group. It turns out that this causes damage to the .vbox file, specifically the snapshot statefile value.

This is on a Windows 8.1 x64 host.

Inside of the .vbox file, I see lines like:

<Snapshot uuid="{496ab03a-2741-44ff-8eb9-f65ef4903835}" name="Snapshot 1" timeStamp="2014-07-14T19:27:23Z" stateFile="Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-14T19-27-23-544711400Z.sav"> .... <Snapshot uuid="{fab398f5-5b9f-47f4-a1ae-360584481820}" name="Snapshot 2" timeStamp="2014-07-14T21:39:20Z" stateFile="Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-14T21-39-20-146504400Z.sav"> .... <Snapshot uuid="{d1a3af0f-7f1b-4628-acc0-737f535dfa3b}" name="Snapshot 3" timeStamp="2014-07-15T04:19:57Z" stateFile="Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T04-19-57-096021800Z.sav"> .... <Snapshot uuid="{9455a652-f640-4769-bff8-06812d39549c}" name="Snapshot 4" timeStamp="2014-07-15T21:57:44Z" stateFile="Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-58-06-472936600Z.sav/Snapshots/2014-07-15T21-57-44-771739300Z.sav">

Every time I move the VM out of a group, and back into a group, the "chain" of ".sav" files for that value keeps growing.

This later causes problems, I believe, when snapshots are either copied in a cloning process, or attempted to be deleted.

Can you please confirm that this "stateFile" value is being corrupted?

Thanks, Jacob

#14216 fixed Windows Remote Desktop on Windows 10 cannot connect to client Jacob Klein
Description

When I try to use Remote Desktop to connect to a running VM, I am getting the error below, even when the Windows Firewall is turned off, using Oracle VirtualBox 4.3.29 r101039. Note that I can connect fine on a Windows 8.1 host, but a Windows 10 host will always return the error below.

Can you please fix it?


[Window Title] Remote Desktop Connection

[Content] This computer can't connect to the remote computer.

Try connecting again. If the problem continues, contact the owner of the remote computer or your network administrator.

[OK] [Help]


#15206 fixed VirtualBox 5.x errors when deleting a snapshot, while VM is running or paused Jacob Klein
Description

VirtualBox 5.x errors when deleting a snapshot, while VM is running or paused

Steps to Reproduce the problems (Tested on Windows 10 Production, fully patched, Version 1511 Build 10586.122):

Prep: 1) Download a pre-made VM. For my example, I downloaded the "IE6 on XP" "VirtualBox" VM from: https://dev.windows.com/en-us/microsoft-edge/tools/vms/windows/ ... and extracted it. 2) Uninstall VirtualBox, then install the version of VirtualBox that you want to test

Problem 1: Deletion of snapshot, while VM is running, fails: 1) Remove any instances of the VM you are testing 2) Double-click the ".ova" file and Import the Virtual Appliance, or add your VM Machine to the VirtualBox Manager 3) Start the VM. If using 5.x, then start the VM using "Normal Start" 4) Let the VM run for a minute or so 5) While the VM is "Running", take a snapshot called "Snapshot 1". While the snapshot is being saved, if on 5.x, you'll see it say "Taking Online Snapshot" 6) While the VM is "Running", take another snapshot called "Snapshot 2". 7) While the VM is "Running", try to delete "Snapshot 1".

Problem 2: Deletion of snapshot, while VM is paused, fails: 1) Redo steps 1-6 above 2) Pause the VM 3) While the VM is "Paused", try to delete "Snapshot 1".

Expected Results: The snapshots get merged such that "Snapshot 1" is successfully deleted

Current Results:

4.3.37 r105748: The UI says "Merging differencing image" for several seconds, then successfully deletes "Snapshot 1" without error

5.0.16 r105871: Failed to delete the snapshot Snapshot 1 of the virtual machine IE6 - WinXP. Result Code: E_FAIL (0x80004005)

Note 1: From what I could tell, there is nothing useful in the .log file. So please follow the steps above to easily reproduce the problems. Note 2: Deleting the snapshot while the VM is Powered Off, *does* seem to work correctly using VirtualBox 5.x. Note 3: BOINC uses the VirtualBox COM API, in order to perform operations. I briefly inspected the code, and it seems to me that BOINC may not be getting an "error return value" when this snapshot deletion error occurs. So, this may be an additional bug, I'm not sure.

Thanks, Jacob Klein

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