mirror of
https://github.com/LCTT/TranslateProject.git
synced 2024-12-26 21:30:55 +08:00
Merge pull request #2785 from goreliu/tmp-2
[Translated] 20150205 zBackup--A versatile deduplicating backup tool.md
This commit is contained in:
joeren
commit
b2242c232e
@ -1,63 +0,0 @@
|
||||
zBackup – A versatile deduplicating backup tool
|
||||
================================================================================
|
||||
zbackup is a globally-deduplicating backup tool, based on the ideas found in rsync. Feed a large .tar into it, and it will store duplicate regions of it only once, then compress and optionally encrypt the result. Feed another .tar file, and it will also re-use any data found in any previous backups. This way only new changes are stored, and as long as the files are not very different, the amount of storage required is very low. Any of the backup files stored previously can be read back in full at any time.
|
||||
|
||||
### zBackup Features ###
|
||||
|
||||
Parallel LZMA or LZO compression of the stored data
|
||||
Built-in AES encryption of the stored data
|
||||
Possibility to delete old backup data
|
||||
Use of a 64-bit rolling hash, keeping the amount of soft collisions to zero
|
||||
Repository consists of immutable files. No existing files are ever modified
|
||||
Written in C++ only with only modest library dependencies
|
||||
Safe to use in production
|
||||
Possibility to exchange data between repos without recompression
|
||||
|
||||
### Install zBackup in ubuntu ###
|
||||
|
||||
Open the terminal and run the following command
|
||||
|
||||
sudo apt-get install zbackup
|
||||
|
||||
### Using zBackup ###
|
||||
|
||||
zbackup init initializes a backup repository for the backup files to be stored.
|
||||
|
||||
zbackup init [--non-encrypted] [--password-file ~/.my_backup_password ] /my/backup/repo
|
||||
|
||||
zbackup backup backups a tar file generated by tar c to the repository initialized using zbackup init
|
||||
|
||||
zbackup [--password-file ~/.my_backup_password ] [--threads number_of_threads ] backup /my/backup/repo/backups/backup-`date ‘+%Y-%m-%d'`
|
||||
|
||||
zbackup restore restores the backup file to a tar file.
|
||||
|
||||
zbackup [--password-file ~/.my_backup_password [--cache-size cache_size_in_mb restore /my/backup/repo/backups/backup-`date ‘+%Y-%m-%d'` > /my/precious/backup-restored.tar
|
||||
|
||||
### Available Options ###
|
||||
|
||||
- -non-encrypted -- Do not encrypt the backup repository.
|
||||
- --password-file ~/.my_backup_password -- Use the password file specified at ~/.my_backup_password to encrypt the repository and backup file, or to decrypt the backup file.
|
||||
- --threads number_of_threads -- Limit the partial LZMA compression to number_of_threads needed. Recommended for 32-bit architectures.
|
||||
- --cache-size cache_size_in_mb -- Use the cache size provided by cache_size_in_mb to speed up the restoration process.
|
||||
|
||||
### zBackup files ###
|
||||
|
||||
~/.my_backup_password Used to encrypt the repository and backup file, or to decrypt the backup file. See zbackup for further details.
|
||||
|
||||
/my/backup/repo The directory used to hold the backup repository.
|
||||
|
||||
/my/precious/restored-tar The tar used for restoring the backup.
|
||||
|
||||
/my/backup/repo/backups/backup-`date ‘+%Y-%m-%d'` Specifies the backup file.
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
via: http://www.ubuntugeek.com/zbackup-a-versatile-deduplicating-backup-tool.html
|
||||
|
||||
作者：[ruchi][a]
|
||||
译者：[译者ID](https://github.com/译者ID)
|
||||
校对：[校对者ID](https://github.com/校对者ID)
|
||||
|
||||
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
|
||||
|
||||
[a]:http://www.ubuntugeek.com/author/ubuntufix
|
||||
@ -0,0 +1,63 @@
|
||||
zBackup——一个通用的重复数据备份工具
|
||||
================================================================================
|
||||
zbackup是一个基于rsync思想的全局重复数据备份工具。给它传入一个大的tar文件后，它会存储该文件的重复区域（仅进行一次），然后对结果进行压缩，并根据参数确定是否对其加密。传入另一个tar文件后，它会从之前的已备份文件中复用重复的数据。只有新的改动会被保存，并且只要文件变动不是很大，需要的存储空间非常少。任何时候之前的已备份文件都可以被完整地读出来。
|
||||
|
||||
### zBackup特性 ###
|
||||
|
||||
- 使用并行的LZMA或者LZO压缩算法压缩已备份数据
|
||||
- 使用内置的AES加密算法加密已备份数据
|
||||
- 可以删除旧的已备份数据
|
||||
- 使用一个64位滚动哈希，保持软碰撞数量为0
|
||||
- 已备份数据由不可更改的文件组成。任何现有文件都没有被更改过
|
||||
- 使用C++语言编写，并且只有适量的依赖库
|
||||
- 可以在生产环境安全使用
|
||||
- 可以在不同备份库中交换数据而无需重新压缩
|
||||
|
||||
### 在ubuntu中安装zBackup ###
|
||||
|
||||
打开终端并运行如下命令：
|
||||
|
||||
sudo apt-get install zbackup
|
||||
|
||||
### 使用zBackup ###
|
||||
|
||||
`zbackup init`命令会初始化一个备份库，用来存放待备份的数据。
|
||||
|
||||
zbackup init [--non-encrypted] [--password-file ~/.my_backup_password ] /my/backup/repo
|
||||
|
||||
`zbackup backup`命令备份一个由`tar c`创建的tar文件到刚才使用`zbackup init`初始化的备份库。（译注：实际使用时类似这样，tar c files | zbackup ...）
|
||||
|
||||
zbackup [--password-file ~/.my_backup_password ] [--threads number_of_threads ] backup /my/backup/repo/backups/backup-`date ‘+%Y-%m-%d'`
|
||||
|
||||
`zbackup restore`命令从备份库中恢复一个已备份文件到tar文件中。
|
||||
|
||||
zbackup [--password-file ~/.my_backup_password ] [--cache-size cache_size_in_mb ] restore /my/backup/repo/backups/backup-`date ‘+%Y-%m-%d'` > /my/precious/backup-restored.tar
|
||||
|
||||
### 可用选项 ###
|
||||
|
||||
- -non-encrypted -- 不加密备份库。
|
||||
- --password-file ~/.my_backup_password -- 使用位于~/.my_backup_password的口令文件来加密备份库和待备份文件，以及解密已备份文件。
|
||||
- --threads number_of_threads -- 限制并行LZMA压缩的线程数到number_of_threads。建议在32位的系统平台使用。
|
||||
- --cache-size cache_size_in_mb -- 使用cache_size_in_mb中的缓存大小来加速恢复文件的过程。
|
||||
|
||||
### zBackup相关文件 ###
|
||||
|
||||
~/.my_backup_password 用来加密备份库和待备份文件，以及解密已备份文件。更多细节见zbackup。
|
||||
|
||||
/my/backup/repo 存放备份库的目录。
|
||||
|
||||
/my/precious/restored-tar 用来恢复已备份文件的tar文件。
|
||||
|
||||
/my/backup/repo/backups/backup-`date ‘+%Y-%m-%d'` 指定的之前已备份文件的文件名。
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
via: http://www.ubuntugeek.com/zbackup-a-versatile-deduplicating-backup-tool.html
|
||||
|
||||
作者：[ruchi][a]
|
||||
译者：[goreliu](https://github.com/goreliu)
|
||||
校对：[校对者ID](https://github.com/校对者ID)
|
||||
|
||||
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
|
||||
|
||||
[a]:http://www.ubuntugeek.com/author/ubuntufix
|
||||
Loading…
Reference in New Issue
Block a user