[Qemu-devel] [Bug 1719870] Re: Converting 100G VHDX fixed image to QCOW2 fails

[R Naveen Kumar]

PS > Get-VHD .\VM.vhdx
ComputerName            : Server1
Path                    : \VM.vhdx
VhdFormat               : VHDX
VhdType                 : Fixed
FileSize                : 107378376704
Size                    : 107374182400
MinimumSize             : 107374182400
LogicalSectorSize       : 4096
PhysicalSectorSize      : 4096
BlockSize               : 0
ParentPath              :
DiskIdentifier          : 53fd4aa7-562e-4bed-bc1c-2db71222e07e
FragmentationPercentage : 0
Alignment               : 1
Attached                : False
DiskNumber              :
Key                     :
IsDeleted               : False
Number                  :
PS > & 'C:\Program Files\qemu\qemu-img.exe' convert -O qcow2 .\VM.vhdx 
.\VM.qcow2
Assertion failed!
Program: C:\Program Files\qemu\qemu-img.exe
File: /home/stefan/src/qemu/repo.or.cz/qemu/ar7/block/io.c, Line 1034
Expression: !qiov || bytes == qiov->size
PS > & 'C:\Program Files\qemu\qemu-img.exe' info .\VM.qcow2
image: .\VM.qcow2
file format: qcow2
virtual size: 13G (13421772800 bytes)
disk size: 1.4G
cluster_size: 65536
Format specific information:
    compat: 1.1
    lazy refcounts: false
    refcount bits: 16
    corrupt: false

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https://bugs.launchpad.net/bugs/1719870

Title:
  Converting 100G VHDX fixed image to QCOW2 fails

Status in QEMU:
  New

Bug description:
  Virtual Size recognized incorrectly for VHDX fixed disk and conversion
  fails with error Expression: !qiov || bytes == qiov->size


  PS > & 'C:\Program Files\qemu\qemu-img.exe' --version
  qemu-img version 2.10.0 (v2.10.0-11669-g579e69bd5b-dirty)
  Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers

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