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[Qemu-devel] [Bug 1006655] Re: Can't convert to vmdk with the streamOpti

From: Radoslav Gerganov
Subject: [Qemu-devel] [Bug 1006655] Re: Can't convert to vmdk with the streamOptimized subformat
Date: Wed, 16 Sep 2015 12:11:31 -0000

My patch has landed:

I think we can resolve this bug as fixed.   Just one note for those how
are trying to use streamOptimized images with VMware: you need to patch
the VMDK version because VMware products accept only version 3 for

# Set VMDK version 3 for foo.vmdk
$ printf '\x03' | dd conv=notrunc of=foo.vmdk bs=1 seek=$((0x4))

** Changed in: qemu
       Status: Confirmed => Fix Committed

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  Can't convert to vmdk with the streamOptimized subformat

Status in QEMU:
  Fix Committed
Status in qemu package in Ubuntu:
Status in qemu-kvm package in Ubuntu:

Bug description:
  Hi all,
  I'm trying to convert a qcow2 image file to the vmdk (on Ubuntu Server 12.04):

  # qemu-img convert -f qcow2 -O vmdk -o Stream spv-2912.qcow2 spv-2912-3.vmdk 
-o subformat=streamOptimized
  VMDK: can't write to allocated cluster for streamOptimized
  qemu-img: error while writing sector 65: Input/output error

  Same result with any input format. Others subformats work but the
  StreamOptimized is by far the most important one. The only workaround
  I found is to migrate to raw and then to use VBoxManage (VirtualBox).

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