VirtualBox

Ticket #6650 (new enhancement)

Opened 4 years ago

Enable writing to STDOUT with VBoxManage clonehd in raw format

Reported by: wildbug Owned by:
Priority: major Component: other
Version: VirtualBox 3.1.6 Keywords: VBoxManage clonehd stdout
Cc: Guest type: other
Host type: Linux

Description

It would be nice to be able to stream a virtual disk to STDOUT in raw format. This would be the opposite of the 'convertfromraw stdin' command.

I was unable to do this using VBoxManage 3.1.6 on a Linux host. I tried using '-' as the output filename; I tried using a named pipe with and without the --existing option. All of these attempts failed with various errors.

For example, the scenario in which I found myself looking for this functionality was where an operating system refused to install itself to anything less than a complete disk. I installed it to a virtual disk through VirtualBox and wanted to stream the first/primary partition to a partition on the physical hard drive. Something like:

# VBoxManage clonehd /tmp/nexenta.vdi - --format RAW | dd of=/dev/sda4 bs=512 skip=63

...but, of course, this doesn't currently succeed. I realize this can be done with an intermediate step of creating a raw image file, but if there is not enough disk space, this is not possible.

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