[Bug 1888467] [NEW] qemu-img http convert bug

[dunfeng zhang]

Public bug reported:

Hello, Why the file sizes of http conversion and local conversion are
inconsistent?

Use the http method of qemu-img for conversion. The size of some formats after 
conversion is different from the local method of qemu-img. Such as vhd, vdi. 
qcow2 and vmdk are normal。
My image size is 40 G, raw format.

The source is the same file, but the access method is different
http method of qemu-img： qemu-img convert -f raw -O vdi http://xxx 
xxx.vdi（19G，after conversion）
local method of qemu-img： qemu-img convert -f raw -O vdi xxx.raw 
xxx.vdi（3G，after conversion）

thank you

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1888467

Title:
  qemu-img http convert bug

Status in QEMU:
  New

Bug description:
  Hello, Why the file sizes of http conversion and local conversion are
  inconsistent?

  Use the http method of qemu-img for conversion. The size of some formats 
after conversion is different from the local method of qemu-img. Such as vhd, 
vdi. qcow2 and vmdk are normal。
  My image size is 40 G, raw format.

  The source is the same file, but the access method is different
  http method of qemu-img： qemu-img convert -f raw -O vdi http://xxx 
xxx.vdi（19G，after conversion）
  local method of qemu-img： qemu-img convert -f raw -O vdi xxx.raw 
xxx.vdi（3G，after conversion）

  thank you

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