Re: Number of CheckPoints

[Ryusuke Konishi <ryusuke-sG5X7nlA6pw@public.gmane.org>]

On Thu, 30 Jul 2009 23:38:49 +0900 (JST), Ryusuke Konishi wrote:
> For example, a 32-bit Linux kernel can handle up to 2 ^ 32 blocks.
> Since NILFS2 stores 21 checkpoints in a standard 4KB block, 32-bit
> nilfs can handle up to
> 
>   90,194,313,215 (= about 90.2 giga) checkpoints
> 
> If we create a checkpoint per 5 seconds, it corresponds to
> 
>   18,038,862,643 seconds = 5,010,795 days = 13,728 years
> 
> So the conclusion is, you know, up to the capacity of your drive ;)

I made a miscalculation.

90,194,313,215 checkpoints = 

 450,971,566,080 seconds = 125,269,879 days = 343,205 years.

In either case, the conclustion is the same.

Ryusuke