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

[R Naveen Kumar]

Bug is reproducible with setting VHDX Fixed Logicalsectorsize to 4096bytes
>10G image created reflects as 1.2G virtual size in Qemu-img
PS F:\> new-vhd -path test.vhdx -BlockSizeBytes 134217728 -SizeBytes 
10737418240 -Fixed -LogicalSectorSizeBytes 4096
ComputerName            : XXXX
Path                    : F:\test.vhdx
VhdFormat               : VHDX
VhdType                 : Fixed
FileSize                : 10741612544
Size                    : 10737418240
MinimumSize             :
LogicalSectorSize       : 4096
PhysicalSectorSize      : 4096
BlockSize               : 0
ParentPath              :
DiskIdentifier          : dfa84293-86f2-4ddf-aaff-14c04dae5df9
FragmentationPercentage : 0
Alignment               : 1
Attached                : False
DiskNumber              :
Key                     :
IsDeleted               : False
Number                  :
PS F:\> C:\temp\qemu-img\qemu-img.exe info .\test.vhdx
image: .\test.vhdx
file format: vhdx
virtual size: 1.2G (1342177280 bytes)
disk size: 10G
cluster_size: 134217728

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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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