VirtualBox

Ticket #5638 (closed enhancement: fixed)

Opened 4 years ago

Last modified 3 years ago

VBoxManage clonehd should preserve extra alignment/padding in the new VDI file

Reported by: Donuts Owned by:
Priority: minor Component: virtual disk
Version: VirtualBox 3.0.12 Keywords:
Cc: Guest type: other
Host type: Linux

Description

Hi,

The VDI file format allows padding to be present in order that disk data may be appropriately aligned. VirtualBox does not currently support creating VDI files with user-specified padding, but such files can be created manually. (See  http://forums.virtualbox.org/viewtopic.php?f=1&t=25336 for example.)

When using VBoxManage clonehd to clone a VDI which has been padded in that way, the extra padding is removed from the cloned VDI. It would be useful if VBoxManage clonehd could preserve any extra padding that is present before the block map and/or image data in the VDI file.

Change History

comment:1 Changed 4 years ago by aeichner

Images created with the next major version of VirtualBox will have a 4K padding by default. Please note that old images can't be converted to use the new padding without rewriting the new image which is as effective as using clonehd to create a new image with new padding ;).

comment:2 Changed 3 years ago by frank

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

That was implemented in VBox 4.0.

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