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From: Thomas Huth <>
Subject: [Qemu-devel] [Bug 603878] Re: [Feature request] qemu-img option about recompressing
Date: Wed, 09 Nov 2016 20:25:41 -0000	[thread overview]
Message-ID: <> (raw)

** Changed in: qemu
   Importance: Undecided => Wishlist

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  [Feature request] qemu-img option about recompressing

Status in QEMU:

Bug description:
  Suppose I have a fresh compressed qcow2 image. After some time the
  data were recorded without compression. I decide to make "QEMU-IMG
  convert" for that image to reduce its size.

  I want a new option, which selects between the two algorithms overdriven images:
  1. extract all / compress again when converting images (in the current implementation)
  2. compress only uncompressed blocks and just copy the compressed blocks without re-compression.

  This option is only needed when converting compressed image to
  compressed and the compression algorithm is the same.

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  parent reply	other threads:[~2016-11-09 20:39 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-07-10  7:06 [Qemu-devel] [Bug 603878] [NEW] [Feature request] qemu-img option about recompressing Коренберг Марк
2010-07-10  7:19 ` [Qemu-devel] [Bug 603878] " Коренберг Марк
2016-11-09 20:25 ` Thomas Huth [this message]
2021-04-22  3:53 ` Thomas Huth
2021-04-22  5:47 ` Коренберг Марк
2021-05-02  5:16 ` Thomas Huth

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