VirtualBox

Ticket #8852 (closed defect: fixed)

Opened 3 years ago

Last modified 7 months ago

Virtualbox corrupts physical disk when removing snapshot

Reported by: rstribrn Owned by:
Priority: critical Component: virtual disk
Version: VirtualBox 4.0.6 Keywords:
Cc: Guest type: Windows
Host type: Linux

Description (last modified by aeichner) (diff)

Situations:

  • Host: Ubuntu, kernel 2.6.38-9
  • VirtualBox is used to boot Windows XP SP3 as guest from physical (raw) device (/dev/sda2)
  • Snapshot is taken
  • Snapshot has about 4GB after a few days...
  • Snapshot remove operation is started...and takes really long time.

1.) Physical device cannot boot as guest anymore

=> Fixed by recreating VMDK for that raw device. => OK

2.) When booting Windows XP as guest, it crashes on corrupted url.dll

3.) When booting Windows XP as host, same behavior

=> When looking at C:\Windows\system32\url.dll, it has some TEXT information => When comparing it with C:\Windows\system32\dllcache\url.dll, its binary..

  • both files differs

Both files has same length => First one is clearly corrupted.

4.) Since Windows XP was able to boot without problems before I removed the snapshot, it's clear that VirtualBox is responsible for that.

Please either disable creating Snapshots for raw physical devices or fix it somehow. :-(

Change History

comment:1 Changed 11 months ago by aeichner

  • Component changed from VMM/RAW to virtual disk
  • Description modified (diff)

Does this still happen wit ha recent release of VirtualBox?

comment:2 Changed 7 months ago by aeichner

  • Status changed from new to closed
  • Resolution set to fixed

No response, closing.

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