ext3文件系统是否支持快照？如果是这样,是否可以使用没有LVM的直接分区来完成？
“直分区”的示例如下：
> / dev / sda1 / boot ext3
> / dev / sda2 / ext3
> / dev / sda3 swap
解决方法
Unlike a number of modern file systems,Ext3 does not have native support for snapshots - the ability to quickly capture the state of the filesystem at arbitrary times,instead relying on less space-efficient volume level snapshots provided by the Linux LVM. The Next3 file system is a modified version of Ext3 which offers snapshots support,yet retains compatibility to the EXT3 on-disk format
引用：http://en.wikipedia.org/wiki/Ext3#Lack_of_snapshots_support
