how to migrate 40T data and 180M files

theti9er at theti9er at
Tue Aug 11 17:39:14 MDT 2009

Use cp -au <src> <dest>, repeat if it crashes or if you have to stop (it  
will skip files already copied), then rsync to update directories'  
modification dates and catch anything changed during copy.


On Aug 11, 2009 5:37am, Ming Gao <gaomingcn at> wrote:
> It's almost the same? I ever tested on about 7G data, I rsync'ed it to  
> another directory, and it takes less than 1 minute when I run the same  
> command line again.

> The reason why I use rsync is that the data will change during the time I  
> run rsync the first time. Then I need to run rsync the second time to  
> make them the same.

> How long would it take if the two copies are the same? I mean just verify  
> if they are the same.

> 2009/8/11 Michal Suchanek hramrach at>

> Finding out what's

> already transferred and transferring the rest takes about the same

> time as doing a full transfer.

> Thanks

> Michal

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