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zhangyoujia / qcow2-defrag

qemu-img convert command(eg: qemu-img convert -f qcow2 -o preallocation=off -O qcow2 src.qcow2 dst.qcow2) will lost snapshots of qcow2 image. qcow2-defrag is a tool for defragging qcow2 image which can solve this problem.

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qcow2defragqemu-imgconvert

qcow2-defrag

Copyright (c) 2017 YOUPLUS

Author: YOUPLUS(zhang_youjia@126.com)

qemu-img convert command(eg: qemu-img convert -f qcow2 -o preallocation=off -O qcow2 src.qcow2 dst.qcow2) will lost snapshots of qcow2 image. qcow2-defrag is a tool for defragging qcow2 image which can solve this problem.

Compile

gcc -g -O2 -o qcow2-defrag fs_magic.h qcow2_defrag.h qcow2_defrag.c

Usage

qcow2-defrag [opts] <qcow2_image>

useage

Examples

qcow2-defrag info

test

qcow2-dump check

test

defragging

test

About

qemu-img convert command(eg: qemu-img convert -f qcow2 -o preallocation=off -O qcow2 src.qcow2 dst.qcow2) will lost snapshots of qcow2 image. qcow2-defrag is a tool for defragging qcow2 image which can solve this problem.

qcow2defragqemu-imgconvert