Unsupported version of data unit

Discussions related to using VirtualBox on Linux hosts.

Unsupported version of data unit

Postby caughran » 28. Feb 2020, 02:05

I am trying to reestablish my virtualbox on linux Mint, after some absence. (Tax time is coming.) When I try to start Windows 7 on vb 5.2.34_Ubuntu r133883 , which used to run well, it comes to a screeching halt, with the message
Failed to open a session for the virtual machine Win7.

Unsupported version 6 of data unit 'HWACCM' (instance #0, pass 0xffffffff) (VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION).

Result Code: NS_ERROR_FAILURE (0x80004005)
Component: ConsoleWrap
Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

Naively, one could conjecture that in version 5.etc., a build slipped in something from version 6.

The log: a whole lot of characters, then
Code: Select all   Expand viewCollapse view
00:00:01.195210 Changing the VM state from 'CREATING' to 'CREATED'
00:00:01.222289 SharedFolders host service: Adding host mapping
00:00:01.222300     Host path '/back', map name 'back', writable, automount=true, create_symlinks=false, missing=false
00:00:01.228006 SharedFolders host service: Adding host mapping
00:00:01.228015     Host path '/home/jim', map name 'jim', writable, automount=true, create_symlinks=false, missing=false
00:00:01.235976 Changing the VM state from 'CREATED' to 'LOADING'
00:00:01.236297 SSM: File header: Format 2.0, VirtualBox Version 6.0.6 r129722, 64-bit host, cbGCPhys=8, cbGCPtr=8
00:00:01.238175 VUSB: Detached 'HidMouse' from port 1 on RootHub#1
00:00:01.238279 SSM: Saved state info:
00:00:01.238284 SSM:   Build Type: release
00:00:01.238288 SSM:   Host OS: linux.amd64
00:00:01.238291 SSM:   OSE: true
00:00:01.238299 SSM: LoadExec failed for 'HWACCM' instance #0 (version 6, pass 0xffffffff): VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION
00:00:01.238323 SSM: Unit at 0xcc, current position: offUnit=0x0 offUnitUser=0x0
00:00:01.238348 VMSetError: /build/virtualbox-p8NxA3/virtualbox-5.2.34-dfsg/src/VBox/VMM/VMMR3/SSM.cpp(8704) int ssmR3LoadExecV2(PVM, PSSMHANDLE); rc=VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION
00:00:01.238352 VMSetError: Unsupported version 6 of data unit 'HWACCM' (instance #0, pass 0xffffffff)
00:00:01.242851 SSM: Unit 'HWACCM' contents:
00:00:01.242860 0x00000000: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00  ................
00:00:01.242865 0x00000010: 00 00 00 00 00 00 00 00-                         ........
00:00:01.242868 SSM: offCur=0x18 fEndOfData=1 (rc=VINF_SUCCESS)
00:00:01.242934 Changing the VM state from 'LOADING' to 'LOAD_FAILURE'
00:00:01.242964 Changing the VM state from 'LOAD_FAILURE' to 'POWERING_OFF'
00:00:01.242970 ****************** Guest state at power off for VCpu 0 *******


and a bunch more characters, and then
Code: Select all   Expand viewCollapse view
00:00:01.257146 E1000#0 Max TX Delay        : 0
00:00:01.312581 GIM: HyperV: Resetting MMIO2 regions and MSRs
00:00:01.315130 Changing the VM state from 'DESTROYING' to 'TERMINATED'
00:00:01.318402 Console: Machine state changed to 'Saved'
00:00:01.322721 ERROR [COM]: aRC=NS_ERROR_FAILURE (0x80004005) aIID={872da645-4a9b-1727-bee2-5585105b9eed} aComponent={ConsoleWrap} aText={Unsupported version 6 of data unit 'HWACCM' (instance #0, pass 0xffffffff) (VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION)}, preserve=false aResultDetail=0
00:00:01.322824 Power up failed (vrc=VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION, rc=NS_ERROR_FAILURE (0X80004005))
00:00:01.824489 GUI: UIMachineViewNormal::adjustGuestScreenSize: Adjust guest-screen size if necessary.
00:00:01.824511 GUI: Aborting startup due to power up progress issue detected...

I saw your cautions about the ubuntu version of vbox; it would save me some effort if you could diagnose the problem here. But if I have to change versions and run again, I can.

Thank you.
caughran
 
Posts: 2
Joined: 28. Jan 2008, 23:31

Re: Unsupported version of data unit

Postby scottgus1 » 28. Feb 2020, 04:09

When you post a log, please zip and post the guest's complete vbox.log, using the forum's Upload Attachment tab.

The line I was looking for based on googling:

VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION site:forums.virtualbox.org

is not in the log segments you posted.

caughran wrote:
Code: Select all   Expand viewCollapse view
00:00:01.238279 SSM: Saved state info:

If this is an indication, your guest was save-stated when you last shut it off, and something has changed on the host PC enough to make the saved state no longer fit. Right-click the guest in the main Virtualbox window and choose Discard Saved State.
Human government is like that crazy uncle who hides a quarter in his fist behind his back, then asks you to guess which fist the quarter is in...
No matter which side you choose, Left or Right, both Sides are empty.
scottgus1
Volunteer
 
Posts: 6950
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Windows, Linux

Re: Unsupported version of data unit

Postby caughran » 29. Feb 2020, 21:51

Thanks! The saved state suggestion worked wonderfully.

As for the log, I'm sorry. I thought that reducing the size of the post might make it easier to get through. But it won't, of course, if something needed is lost.
caughran
 
Posts: 2
Joined: 28. Jan 2008, 23:31


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