[tahoe-dev] Change the parameters(K-N) when using

Michael Coppola coppola.mi at husky.neu.edu
Mon Feb 28 10:44:16 PST 2011


Sorry I don't have an answer, but I would like to second this question. 
I run a small friendnet, and as we add more storage nodes, I would like
to consider changing the K-N parameters too to save space.  Thank you to
anyone who may offer some guidance

Michael

On 02/28/2011 01:41 PM, Jiawei Jiang wrote:
> Hello
>
> A question about change the parameters(K-N) when using.
>
> Assume that I have a grid with 10 servers with 3-6, and there are
> already files stored. With the scale growth of the grid, maybe to 100
> nodes or even 1000, is there possibility to change the K-N parameter
> to a larger one (for example 20-40) without damaging the existing
> files. Another assumption would only customers have the encryption key.
>
> In other words, is that possible to have two different settings of
> parameters on the same grid simultaneously. 
>
> If not, I think the only way is to reconstruct all existing files
> before re-starting the system with a new parameter. I need to gather
> the encrypted shares (with 3-6 setting), storing them
> on temporary storage, and then re-distribute files (with 20-40
> setting). The question is, in such process do I need encryption keys
> from customer nodes. In other words, do I need both encryption keys
> and parameters to do so?
>
> Thanks
> Eric
>
>
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