qcow2-dump

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qcow2-dump is a useful tool for checking and repairing damaged qcow2 image, it has some improvements compare with qemu-img check command (qcow2-dump has all functions which qemu-img check command has).

qcow2-dump 최신버젼 다운로드

최종 버전 다운로드 (.zip)

// repository documentation

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## YOUPLUS's tools
![YOUPLUS's tools](https://raw.githubusercontent.com/zhangyoujia/qcow2-dump/master/YOUPLUS工具箱.png)

## qcow2-dump
=========================================================================

## qcow2镜像检测与修复
![author](https://raw.githubusercontent.com/zhangyoujia/qcow2-dump/master/test/qcow2镜像检测与修复.png)

## 个人简介
![author](https://raw.githubusercontent.com/zhangyoujia/qcow2-dump/master/test/author.png)

## qcow2-dump实现框架
![code](https://raw.githubusercontent.com/zhangyoujia/qcow2-dump/master/test/qcow2-dump实现框架.png)

## version
![code](https://raw.githubusercontent.com/zhangyoujia/qcow2-dump/master/test/version.png)

Author: YOUPLUS(<zhang_youjia@126.com>)

qcow2-dump is a useful tool for checking and repairing damaged qcow2 image, it has some improvements compare with qemu-img check command (qcow2-dump has all functions which qemu-img check command has).

<pre>
what's error?        (type of error)
where's error?       (posistion of error)
Can it be repaired?
How to repair it?    (repairing advice)
</pre>

## Usage
`qcow2-dump [opts] <qcow2_image>`

<pre>
qcow2-dump -h

[SAFE OPERATION]:
eg: qcow2-dump -m info filename

eg: qcow2-dump [-m check] [-K] filename
eg: qcow2-dump [-m check] [-K] -c filename
eg: qcow2-dump [-m check] [-K] -l filename

eg: qcow2-dump -m error [-K] filename
eg: qcow2-dump -m error [-K] -c filename
eg: qcow2-dump -m error [-K] -l filename

eg: qcow2-dump -m dump  [-K] filename > /var/dump.log
eg: qcow2-dump -m dump  [-K] -c filename > /var/dump.log
eg: qcow2-dump -m dump  [-K] -f filename > /var/dump.log
eg: qcow2-dump -m dump  [-K] -l filename > /var/dump.log

[DANGEROUS OPERATION]:
eg: qcow2-dump -A snapshot id/name filename
eg: qcow2-dump -A snapshot[N] filename
eg: qcow2-dump -D snapshot id/name filename
eg: qcow2-dump -D snapshot[N] filename
eg: qcow2-dump -D all filename
eg: qcow2-dump -E snapshot id/name filename
eg: qcow2-dump -E snapshot[N] filename
eg: qcow2-dump -E 0 filename

eg: qcow2-dump -R leak|error|reuse|discard|all filename

eg: qcow2-dump -m rebase -F backing_file [-b] filename

eg: qcow2-dump -m edit -O offset -V value [-w 8] filename
eg: qcow2-dump -m edit -O offset -V value -w 1/2/4/8 filename

eg: qcow2-dump -m copy -O offset -S offset -w length filename
eg: qcow2-dump -m copy -O offset -S offset -w length [-F source] filename

eg: qcow2-dump -C corrupt filename
eg: qcow2-dump -M corrupt filename

[EXAMPLES]:
eg: qcow2-dump [-m check] filename > /dev/null; echo $?
eg: qcow2-dump [-m check] -d none filename > /var/check.log
eg: qcow2-dump -m error filename > /var/error.log
eg: qcow2-dump -m error -R none filename > /var/error.log
eg: qcow2-dump -m error -o refcount filename > /var/refcount.log
eg: qcow2-dump -m error -o snapshot filename > /var/snapshot.log
eg: qcow2-dump -m error -s active filename > /var/active.log
eg: qcow2-dump -m error -s inactive filename > /var/inactive.log
eg: qcow2-dump -m dump  -o refcount filename > /var/refcount.log
eg: qcow2-dump -m dump  -o snapshot filename > /var/snapshot.log
eg: qcow2-dump -m dump  -o snapshot -s active filename > /var/active.log
eg: qcow2-dump -m dump  -o snapshot -s 1 filename > /var/snapshot1.log
eg: qcow2-dump -m dump  -o snapshot -s inactive filename > /var/inactive.log
eg: qcow2-dump -m dump  -f -o snapshot -s active filename > /var/active.log
</pre>

## Help
![useage](https://raw.githubusercontent.com/zhangyoujia/qcow2-dump/master/test/qcow2-dump_help.png)

## Header
![qcow2_header](https://raw.githubusercontent.com/zhangyoujia/qcow2-dump/master/test/qcow2_header_offsetof.png)

## Qcow2 Layout
![qcow2 layout](https://raw.githubusercontent.com/zhangyoujia/qcow2-dump/master/test/qcow2_layout$preallocation$.png)

## Discussion Email
![email](https://raw.githubusercontent.com/zhangyoujia/qcow2-dump/master/test/discussion.png)

![email](https://raw.githubusercontent.com/zhangyoujia/qcow2-dump/master/test/社区认可.png)

![email](https://raw.githubusercontent.com/zhangyoujia/qcow2-dump/master/test/社区认可2.png)

## Examples
<pre>
qcow2-dump filename
</pre>
![corrupt](https://raw.githubusercontent.com/zhangyoujia/qcow2-dump/master/test/corrupt.png)

<pre>
qcow2-dump -m error filename
</pre>
![reuse](https://raw.githubusercontent.com/zhangyoujia/qcow2-dump/master/test/reused_active_cluster.png)

<pre>
qcow2-dump -R all filename
</pre>
![rebuild](https://raw.githubusercontent.com/zhangyoujia/qcow2-dump/master/test/rebuild_refcount_table.png)

## Subcluster
![rebuild](https://raw.githubusercontent.com/zhangyoujia/qcow2-dump/master/test/subcluster.png)

## Subcluster Bitmap
![rebuild](https://raw.githubusercontent.com/zhangyoujia/qcow2-dump/master/test/subcluster_bitmap.png)

qcow2-dump

qcow2-dump 최신버젼 다운로드

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