dump和restore命令实现全备、增量备份和差异备份

r囧r小猫 2024-04-17 23:31 74阅读 0赞

差异备份，在全备的基础上做备份。因为tar命令不能实现差异备份，所以本文讲解如何用dump和restore命令实现。当然dump和restore命令也可以实现全备和增量备份。

## 一 创建备份目录 分区 挂载 ##

[root@serv01 data]# mkdir /backup
    [root@serv01 data]# fdisk /dev/sdb
    [root@serv01 data]# fdisk /dev/sdc
    [root@serv01 data]# mkfs.ext4 /dev/sdb1
    [root@serv01 data]# mkfs.ext4 /dev/sdc1
     
    [root@serv01 data]# mount /dev/sdb1 /data
    [root@serv01 data]# mount /dev/sdc1/backup/

## 二 拷贝文件、修改配置文件 ##

#拷贝文件
    [root@serv01 data]# rm -rf *
    [root@serv01 data]# cp /boot/* .
    cp: omitting directory `/boot/efi'
    cp: omitting directory `/boot/grub'
    cp: omitting directory `/boot/lost+found'
    #向fstab文件追加内容
    [root@serv01 data]# echo "/dev/sdb1/data ext4 defaults 1 2" >> /etc/fstab
    [root@serv01 data]# echo "/dev/sdc1/backup ext4 defaults 1 2" >> /etc/fstab

## 三 dump和restore——实现全备 ##

[root@serv01 data]# yum install dump -y
    #dump：支持增量备份和差异备份，只能对单独的分区进行备份
    #0：全备
    #u：把/etc/dumpdates更新
    #f：备份后的名字
    [root@serv01 data]# cd /backup/
    [root@serv01 backup]# ls
    lost+found
    [root@serv01 backup]# rm -rf lost+found/
    #第一次查看，发现dumpdates没有任何内容
    [root@serv01 backup]# ls /etc/dumpdates
    /etc/dumpdates
    #备份
    [root@serv01 backup]# dump -0uf data01.dump/data/
     DUMP: Date of this level 0 dump: Fri Aug 2 18:57:53 2013
     DUMP: Dumping /dev/sdb1 (/data) to data01.dump
     DUMP: Label: none
     DUMP: Writing 10 Kilobyte records
     DUMP: mapping (Pass I) [regular files]
     DUMP: mapping (Pass II) [directories]
     DUMP: estimated 59 blocks.
     DUMP: Volume 1 started with block 1 at: Fri Aug  2 18:57:53 2013
     DUMP: dumping (Pass III) [directories]
     DUMP: dumping (Pass IV) [regular files]
     DUMP: Closing data01.dump
     DUMP: Volume 1 completed at: Fri Aug 2 18:57:53 2013
     DUMP: Volume 1 50 blocks (0.05MB)
     DUMP: 50 blocks (0.05MB) on 1 volume(s)
     DUMP: finished in less than a second
     DUMP: Date of this level 0 dump: Fri Aug 2 18:57:53 2013
     DUMP: Date this dump completed: Fri Aug  2 18:57:53 2013
     DUMP: Average transfer rate: 0 kB/s
     DUMP: DUMP IS DONE
    [root@serv01 backup]# ll
    total 52
    -rw-r--r—. 1 root root 51200 Aug  2 18:57 data01.dump
    #查看dumpdates文件，发现已经更新了
    [root@serv01 backup]# cat /etc/dumpdates
    /dev/sdb1 0 Fri Aug  2 18:57:53 2013 +0800
     
    #还原，数据没有了，重新备份
    [root@serv01 backup]# cd /data
    [root@serv01 data]# ls
    lost+found
    [root@serv01 data]# rm -rf *
    [root@serv01 data]# cp /boot/* ./
    cp: omitting directory `/boot/efi'
    cp: omitting directory `/boot/grub'
    cp: omitting directory `/boot/lost+found'
    [root@serv01 data]# cd /backup/
    [root@serv01 backup]# ls
    data01.dump
    [root@serv01 backup]# rm -rf *
    [root@serv01 backup]# ls
    [root@serv01 backup]# > /etc/dumpdates
    [root@serv01 backup]# dump -0uf dump01.dump/data/
     DUMP: Date of this level 0 dump: Fri Aug 2 19:02:20 2013
     DUMP: Dumping /dev/sdb1 (/data) to dump01.dump
     DUMP: Label: none
     DUMP: Writing 10 Kilobyte records
     DUMP: mapping (Pass I) [regular files]
     DUMP: mapping (Pass II) [directories]
     DUMP: estimated 18674 blocks.
     DUMP: Volume 1 started with block 1 at: Fri Aug  2 19:02:20 2013
     DUMP: dumping (Pass III) [directories]
     DUMP: dumping (Pass IV) [regular files]
     DUMP: Closing dump01.dump
     DUMP: Volume 1 completed at: Fri Aug 2 19:02:20 2013
     DUMP: Volume 1 18670 blocks (18.23MB)
     DUMP: 18670 blocks (18.23MB) on 1 volume(s)
     DUMP: finished in less than a second
     DUMP: Date of this level 0 dump: Fri Aug 2 19:02:20 2013
     DUMP: Date this dump completed: Fri Aug  2 19:02:20 2013
     DUMP: Average transfer rate: 0 kB/s
     DUMP: DUMP IS DONE
    #进入data目录，发现有数据
    [root@serv01 backup]# cd /data
    [root@serv01 data]# ls
    config-2.6.32-131.0.15.el6.x86_64         symvers-2.6.32-131.0.15.el6.x86_64.gz  vmlinuz-2.6.32-131.0.15.el6.x86_64
    initramfs-2.6.32-131.0.15.el6.x86_64.img  System.map-2.6.32-131.0.15.el6.x86_64
    #全部删除，模拟数据丢失
    [root@serv01 data]# rm -rf *
    [root@serv01 data]# ls
    #恢复数据
    [root@serv01 data]# restore -rf/backup/dump01.dump
    #恢复成功
    [root@serv01 data]# ls
    config-2.6.32-131.0.15.el6.x86_64         restoresymtable                       System.map-2.6.32-131.0.15.el6.x86_64
    initramfs-2.6.32-131.0.15.el6.x86_64.img  symvers-2.6.32-131.0.15.el6.x86_64.gz  vmlinuz-2.6.32-131.0.15.el6.x86_64
     
    [root@serv01 data]# cp /etc/passwd ./
    [root@serv01 data]# ls
    config-2.6.32-131.0.15.el6.x86_64         passwd          symvers-2.6.32-131.0.15.el6.x86_64.gz vmlinuz-2.6.32-131.0.15.el6.x86_64
    initramfs-2.6.32-131.0.15.el6.x86_64.img  restoresymtable  System.map-2.6.32-131.0.15.el6.x86_64
    [root@serv01 data]# cd /backup/

## 四 dump和restore——实现增量备份 ##

#增量备份：1-9
    #dump：备份磁盘上的块，不止是文件；只能备份单独的分区
     
    [root@serv01 data]# rm -rf *
    [root@serv01 data]# cp /boot/* .
    cp: omitting directory `/boot/efi'
    cp: omitting directory `/boot/grub'
    cp: omitting directory `/boot/lost+found'
    [root@serv01 data]# cd /backup/
    [root@serv01 backup]# ll
    total 18672
    -rw-r--r--. 1 root root 19118080 Aug  2  2013dump01.dump
    [root@serv01 backup]# rm -rf dump01.dump
     
    #第一次备份：全备
    [root@serv01 backup]# dump -0uf data01.dump/data/
     DUMP: Date of this level 0 dump: Fri Aug 2 11:25:57 2013
     DUMP: Dumping /dev/sdb1 (/data) to data01.dump
     DUMP: Label: none
     DUMP: Writing 10 Kilobyte records
     DUMP: mapping (Pass I) [regular files]
     DUMP: mapping (Pass II) [directories]
     DUMP: estimated 18674 blocks.
     DUMP: Volume 1 started with block 1 at: Fri Aug  2 11:25:57 2013
     DUMP: dumping (Pass III) [directories]
     DUMP: dumping (Pass IV) [regular files]
     DUMP: Closing data01.dump
     DUMP: Volume 1 completed at: Fri Aug 2 11:25:57 2013
     DUMP: Volume 1 18670 blocks (18.23MB)
     DUMP: 18670 blocks (18.23MB) on 1 volume(s)
     DUMP: finished in less than a second
     DUMP: Date of this level 0 dump: Fri Aug 2 11:25:57 2013
     DUMP: Date this dump completed: Fri Aug  2 11:25:57 2013
     DUMP: Average transfer rate: 0 kB/s
     DUMP: DUMP IS DONE
    [root@serv01 backup]# ll
    total 18672
    -rw-r—r—. 1 root root 19118080 Aug  2 11:25 data01.dump
    #拷贝文件到data目录
    #第二次备份：增量备份
    [root@serv01 backup]# cp /etc/inittab/data/
    [root@serv01 backup]# dump -1uf data02.dump/data/
     DUMP: Date of this level 1 dump: Fri Aug 2 11:26:28 2013
     DUMP: Date of last level 0 dump: Fri Aug 2 11:25:57 2013
     DUMP: Dumping /dev/sdb1 (/data) to data02.dump
     DUMP: Label: none
     DUMP: Writing 10 Kilobyte records
     DUMP: mapping (Pass I) [regular files]
     DUMP: mapping (Pass II) [directories]
     DUMP: estimated 55 blocks.
     DUMP: Volume 1 started with block 1 at: Fri Aug  2 11:26:28 2013
     DUMP: dumping (Pass III) [directories]
     DUMP: dumping (Pass IV) [regular files]
     DUMP: Closing data02.dump
     DUMP: Volume 1 completed at: Fri Aug 2 11:26:28 2013
     DUMP: Volume 1 50 blocks (0.05MB)
     DUMP: 50 blocks (0.05MB) on 1 volume(s)
     DUMP: finished in less than a second
     DUMP: Date of this level 1 dump: Fri Aug 2 11:26:28 2013
     DUMP: Date this dump completed: Fri Aug  2 11:26:28 2013
     DUMP: Average transfer rate: 0 kB/s
     DUMP: DUMP IS DONE
    [root@serv01 backup]# ll
    total 18724
    -rw-r--r--. 1 root root 19118080 Aug  2 11:25 data01.dump
    -rw-r--r—. 1 root root    51200 Aug 2 11:26 data02.dump
    #再次拷贝文件
    [root@serv01 backup]# cp /etc/passwd /data/
    #第三次备份：增量备份
    [root@serv01 backup]# dump -2uf data03.dump/data/
     DUMP: Date of this level 2 dump: Fri Aug 2 11:27:07 2013
     DUMP: Date of last level 1 dump: Fri Aug 2 11:26:28 2013
     DUMP: Dumping /dev/sdb1 (/data) to data03.dump
     DUMP: Label: none
     DUMP: Writing 10 Kilobyte records
     DUMP: mapping (Pass I) [regular files]
     DUMP: mapping (Pass II) [directories]
     DUMP: estimated 55 blocks.
     DUMP: Volume 1 started with block 1 at: Fri Aug  2 11:27:07 2013
     DUMP: dumping (Pass III) [directories]
     DUMP: dumping (Pass IV) [regular files]
     DUMP: Closing data03.dump
     DUMP: Volume 1 completed at: Fri Aug 2 11:27:07 2013
     DUMP: Volume 1 50 blocks (0.05MB)
     DUMP: 50 blocks (0.05MB) on 1 volume(s)
     DUMP: finished in less than a second
     DUMP: Date of this level 2 dump: Fri Aug 2 11:27:07 2013
     DUMP: Date this dump completed: Fri Aug  2 11:27:07 2013
     DUMP: Average transfer rate: 0 kB/s
     DUMP: DUMP IS DONE
    [root@serv01 backup]# cat /etc/dumpdates
    /dev/sdb1 0 Fri Aug  2 11:25:57 2013 +0800
    /dev/sdb1 1 Fri Aug  2 11:26:28 2013 +0800
    /dev/sdb1 2 Fri Aug  2 11:27:07 2013 +0800
    #第四次备份：增量备份
    [root@serv01 backup]# dump -3uf data04.dump/data/
     DUMP: Date of this level 3 dump: Fri Aug 2 11:28:48 2013
     DUMP: Date of last level 2 dump: Fri Aug 2 11:27:07 2013
     DUMP: Dumping /dev/sdb1 (/data) to data04.dump
     DUMP: Label: none
     DUMP: Writing 10 Kilobyte records
     DUMP: mapping (Pass I) [regular files]
     DUMP: mapping (Pass II) [directories]
     DUMP: estimated 50 blocks.
     DUMP: Volume 1 started with block 1 at: Fri Aug  2 11:28:48 2013
     DUMP: dumping (Pass III) [directories]
     DUMP: dumping (Pass IV) [regular files]
     DUMP: Closing data04.dump
     DUMP: Volume 1 completed at: Fri Aug 2 11:28:48 2013
     DUMP: Volume 1 40 blocks (0.04MB)
     DUMP: 40 blocks (0.04MB) on 1 volume(s)
     DUMP: finished in less than a second
     DUMP: Date of this level 3 dump: Fri Aug 2 11:28:48 2013
     DUMP: Date this dump completed: Fri Aug  2 11:28:48 2013
     DUMP: Average transfer rate: 0 kB/s
     DUMP: DUMP IS DONE
    [root@serv01 backup]# cat /etc/dumpdates
    /dev/sdb1 0 Fri Aug  2 11:25:57 2013 +0800
    /dev/sdb1 1 Fri Aug  2 11:26:28 2013 +0800
    /dev/sdb1 2 Fri Aug  2 11:27:07 2013 +0800
    /dev/sdb1 3 Fri Aug  2 11:28:48 2013 +0800
    #进入data目录，模拟数据丢失
    [root@serv01 backup]# cd /data
    [root@serv01 data]# ls
    config-2.6.32-131.0.15.el6.x86_64         inittab  symvers-2.6.32-131.0.15.el6.x86_64.gz
    initramfs-2.6.32-131.0.15.el6.x86_64.img  passwd  vmlinuz-2.6.32-131.0.15.el6.x86_64
    [root@serv01 data]# rm -rf *
    [root@serv01 data]# ls
    #恢复数据：一级一级地恢复
    [root@serv01 data]# restore -rf/backup/data01.dump
    [root@serv01 data]# ls
    config-2.6.32-131.0.15.el6.x86_64         restoresymtable                        System.map-2.6.32-131.0.15.el6.x86_64
    initramfs-2.6.32-131.0.15.el6.x86_64.img  symvers-2.6.32-131.0.15.el6.x86_64.gz  vmlinuz-2.6.32-131.0.15.el6.x86_64
    [root@serv01 data]# restore -rf/backup/data03.dump
    restore: Incremental tape too low
    [root@serv01 data]# ls
    config-2.6.32-131.0.15.el6.x86_64         restoresymtable                       System.map-2.6.32-131.0.15.el6.x86_64
    initramfs-2.6.32-131.0.15.el6.x86_64.img  symvers-2.6.32-131.0.15.el6.x86_64.gz  vmlinuz-2.6.32-131.0.15.el6.x86_64
    [root@serv01 data]# restore -rf/backup/data02.dump
    [root@serv01 data]# restore -rf/backup/data03.dump
    [root@serv01 data]# restore -rf/backup/data04.dump
    [root@serv01 data]# ls
    config-2.6.32-131.0.15.el6.x86_64         inittab  restoresymtable                        vmlinuz-2.6.32-131.0.15.el6.x86_64
    initramfs-2.6.32-131.0.15.el6.x86_64.img  passwd  symvers-2.6.32-131.0.15.el6.x86_64.gz
     
    #恢复时报错：
    #1.恢复的数据不对：查看挂载是否正确
    #2.restore: Incremental tape too high 同一级别的备份了多次，所以会报这个错误，检查/etc/dumpdates文件和拼写是否错误

## 五 dump和restore——实现差异备份 ##

#演示差异备份
    [root@serv01 data]# cd /backup/
    [root@serv01 backup]# rm -rf *
    [root@serv01 backup]# rm -rf data01.dump
    [root@serv01 backup]# > /etc/dumpdates
    #首先全备
    [root@serv01 backup]# dump -0uf data01.dump/data/
     DUMP: Date of this level 0 dump: Fri Aug 2 11:43:51 2013
     DUMP: Dumping /dev/sdb1 (/data) to data01.dump
     DUMP: Label: none
     DUMP: Writing 10 Kilobyte records
     DUMP: mapping (Pass I) [regular files]
     DUMP: mapping (Pass II) [directories]
     DUMP: estimated 16672 blocks.
     DUMP: Volume 1 started with block 1 at: Fri Aug  2 11:43:51 2013
     DUMP: dumping (Pass III) [directories]
     DUMP: dumping (Pass IV) [regular files]
     DUMP: Closing data01.dump
     DUMP: Volume 1 completed at: Fri Aug 2 11:43:51 2013
     DUMP: Volume 1 16680 blocks (16.29MB)
     DUMP: 16680 blocks (16.29MB) on 1 volume(s)
     DUMP: finished in less than a second
     DUMP: Date of this level 0 dump: Fri Aug 2 11:43:51 2013
     DUMP: Date this dump completed: Fri Aug  2 11:43:51 2013
     DUMP: Average transfer rate: 0 kB/s
     DUMP: DUMP IS DONE
    [root@serv01 backup]# cat /etc/dumpdates
    /dev/sdb1 0 Fri Aug  2 11:43:51 2013 +0800
    #拷贝fstab文件
    [root@serv01 backup]# cp /etc/fstab /data/
    #差异备份
    [root@serv01 backup]# dump -1uf data02.dump/data/
     DUMP: Date of this level 1 dump: Fri Aug 2 11:44:20 2013
     DUMP: Date of last level 0 dump: Fri Aug 2 11:43:51 2013
     DUMP: Dumping /dev/sdb1 (/data) to data02.dump
     DUMP: Label: none
     DUMP: Writing 10 Kilobyte records
     DUMP: mapping (Pass I) [regular files]
     DUMP: mapping (Pass II) [directories]
     DUMP: estimated 55 blocks.
     DUMP: Volume 1 started with block 1 at: Fri Aug  2 11:44:20 2013
     DUMP: dumping (Pass III) [directories]
     DUMP: dumping (Pass IV) [regular files]
     DUMP: Closing data02.dump
     DUMP: Volume 1 completed at: Fri Aug 2 11:44:20 2013
     DUMP: Volume 1 50 blocks (0.05MB)
     DUMP: 50 blocks (0.05MB) on 1 volume(s)
     DUMP: finished in less than a second
     DUMP: Date of this level 1 dump: Fri Aug 2 11:44:20 2013
     DUMP: Date this dump completed: Fri Aug  2 11:44:20 2013
     DUMP: Average transfer rate: 0 kB/s
     DUMP: DUMP IS DONE
    #拷贝yum.conf文件
    [root@serv01 backup]# cp /etc/yum.conf/data
    [root@serv01 backup]# dump -1ufdata021.dump /data/
     DUMP: Date of this level 1 dump: Fri Aug 2 11:44:47 2013
     DUMP: Date of last level 0 dump: Fri Aug 2 11:43:51 2013
     DUMP: Dumping /dev/sdb1 (/data) to data021.dump
     DUMP: Label: none
     DUMP: Writing 10 Kilobyte records
     DUMP: mapping (Pass I) [regular files]
     DUMP: mapping (Pass II) [directories]
     DUMP: estimated 60 blocks.
     DUMP: Volume 1 started with block 1 at: Fri Aug  2 11:44:47 2013
     DUMP: dumping (Pass III) [directories]
     DUMP: dumping (Pass IV) [regular files]
     DUMP: Closing data021.dump
     DUMP: Volume 1 completed at: Fri Aug 2 11:44:47 2013
     DUMP: Volume 1 60 blocks (0.06MB)
     DUMP: 60 blocks (0.06MB) on 1 volume(s)
     DUMP: finished in less than a second
     DUMP: Date of this level 1 dump: Fri Aug 2 11:44:47 2013
     DUMP: Date this dump completed: Fri Aug  2 11:44:47 2013
     DUMP: Average transfer rate: 0 kB/s
     DUMP: DUMP IS DONE
    #拷贝文件，然后差异备份
    [root@serv01 backup]# cp /etc/networks/data
    [root@serv01 backup]# dump -1ufdata0211.dump /data/
     DUMP: Date of this level 1 dump: Fri Aug 2 11:45:34 2013
     DUMP: Date of last level 0 dump: Fri Aug 2 11:43:51 2013
     DUMP: Dumping /dev/sdb1 (/data) to data0211.dump
     DUMP: Label: none
     DUMP: Writing 10 Kilobyte records
     DUMP: mapping (Pass I) [regular files]
     DUMP: mapping (Pass II) [directories]
     DUMP: estimated 65 blocks.
     DUMP: Volume 1 started with block 1 at: Fri Aug  2 11:45:34 2013
     DUMP: dumping (Pass III) [directories]
     DUMP: dumping (Pass IV) [regular files]
     DUMP: Closing data0211.dump
     DUMP: Volume 1 completed at: Fri Aug 2 11:45:34 2013
     DUMP: Volume 1 70 blocks (0.07MB)
     DUMP: 70 blocks (0.07MB) on 1 volume(s)
     DUMP: finished in less than a second
     DUMP: Date of this level 1 dump: Fri Aug 2 11:45:34 2013
     DUMP: Date this dump completed: Fri Aug  2 11:45:34 2013
     DUMP: Average transfer rate: 0 kB/s
     DUMP: DUMP IS DONE
     
    #模拟数据删除
    [root@serv01 backup]# cd /data
    [root@serv01 data]# rm -rf *
    #恢复时需要有全备的文件和想恢复的文件（或者最后一次），只需要两个
    [root@serv01 data]# restore -rf/backup/data01.dump
    [root@serv01 data]# restore -rf/backup/data021.dump
    [root@serv01 data]# ls
    config-2.6.32-131.0.15.el6.x86_64         inittab          symvers-2.6.32-131.0.15.el6.x86_64.gz
    fstab                                    passwd           vmlinuz-2.6.32-131.0.15.el6.x86_64
    initramfs-2.6.32-131.0.15.el6.x86_64.img  restoresymtable  yum.conf
    [root@serv01 data]# rm -rf *
    [root@serv01 data]# restore -rf/backup/data01.dump
    [root@serv01 data]# restore -rf/backup/data0211.dump
    [root@serv01 data]# ls
    config-2.6.32-131.0.15.el6.x86_64         inittab   restoresymtable                        yum.conf
    fstab                                    networks symvers-2.6.32-131.0.15.el6.x86_64.gz
    initramfs-2.6.32-131.0.15.el6.x86_64.img  passwd   vmlinuz-2.6.32-131.0.15.el6.x86_64
     
    #差异备份：一定是在全备的基础上
     
    #dd没有增量备份的功能
    #磁盘拷贝（对拷）
    [root@serv01 backup]# cd /data/
    [root@serv01 data]# ls
    [root@serv01 data]# cp /boot/* .
    cp: omitting directory `/boot/efi'
    cp: omitting directory `/boot/grub'
    cp: omitting directory `/boot/lost+found'
    [root@serv01 data]# dd if=/dev/sdb1of=/dev/sdc1
    dd: writing to `/dev/sdc1': Input/outputerror
    4192897+0 records in
    4192896+0 records out
    2146762752 bytes (2.1 GB) copied, 71.3082s, 30.1 MB/s
    [root@serv01 data]# df -h
    Filesystem            Size Used Avail Use% Mounted on
    /dev/sda2             9.7G  1.1G 8.1G  12% /
    tmpfs                 188M     0 188M   0% /dev/shm
    /dev/sda1             194M   25M 160M  14% /boot
    /dev/sda5             4.0G  137M 3.7G   4% /opt
    /dev/sr0              3.4G 3.4G     0 100% /iso
    /dev/sdb1             2.0G   54M 1.9G   3% /data
    /dev/sdc1             2.0G   35M 1.9G   2% /backup
    [root@serv01 data]# ls /backup/
    config-2.6.32-131.0.15.el6.x86_64        symvers-2.6.32-131.0.15.el6.x86_64.gz vmlinuz-2.6.32-131.0.15.el6.x86_64
    initramfs-2.6.32-131.0.15.el6.x86_64.img  System.map-2.6.32-131.0.15.el6.x86_64

## 六 相关文章 ##

*  [tar命令使用及tar实现全备份和增量备份][tar_tar]

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   <td style="text-align:right"><a title="新浪微博求粉 ^_^" href="http://weibo.com/wentasy" rel="nofollow"><img title="新浪微博求粉 ^_^" alt="Sina" src="https://img-my.csdn.net/uploads/201210/26/1351182273_5476.png.thumb.jpg" style="height:40px"></a>&nbsp;<a title="我的CSDN博客——HelloWorld" href="http://blog.csdn.net/Wentasy" rel="nofollow"><img title="我的CSDN博客——HelloWorld" alt="CSDN" src="https://img-my.csdn.net/uploads/201210/26/1351182268_8254.png.thumb.jpg" style="height:40px"></a></td> 
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   <td style="text-align:right; font-family:microsoft yahei; color:white; font-size:12px"> <a title="我的CSDN博客——HelloWorld" href="http://blog.csdn.net/Wentasy" rel="nofollow">@Wentasy</a> 博文仅供参考，欢迎大家来访。如有错误之处，希望批评指正。原创博文如需转载请注明出处，谢谢 :) [CSDN博客]</td> 
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[tar_tar]: http://blog.csdn.net/justdb/article/details/10040973