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[Qemu-devel] [Bug 1103903] Re: drive_mirror on a resized image creates f


From: Vish Ishaya
Subject: [Qemu-devel] [Bug 1103903] Re: drive_mirror on a resized image creates file with wrong size
Date: Thu, 24 Jan 2013 18:02:32 -0000

** Changed in: qemu
       Status: New => In Progress

** Changed in: qemu
     Assignee: (unassigned) => Vish Ishaya (vishvananda)

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https://bugs.launchpad.net/bugs/1103903

Title:
  drive_mirror on a resized image creates file with wrong size

Status in QEMU:
  In Progress

Bug description:
  Repro steps:

  qemu-img create -f qcow2 base 32M
  qemu-img create -f qcow2 -o backing_file=base disk
  qemu-img resize /home/vishvananda/disk 64M
  qemu-system-x86_64 -drive file=disk,id=vda -vnc :1 -monitor stdio
  QEMU 1.3.0 monitor - type 'help' for more information
  (qemu) drive_mirror vda test
  Formatting 'test', fmt=qcow2 size=33554432 backing_file='base' 
backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

  the file is 32M instead of 64M:

  qemu-img info test
  image: test
  file format: qcow2
  virtual size: 32M (33554432 bytes)
  disk size: 196K
  cluster_size: 65536
  backing file: base
  backing file format: qcow2

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