[tahoe-dev] split brain? how handled in tahoe -- docs?

James A. Donald jamesd at echeque.com
Wed Aug 8 01:46:09 UTC 2012


On 2012-08-07 5:16 PM, Two Spirit wrote:
> Since when is lost data considered highly RELIABLE storage? It isn't
> storage if it doesn't store. in my eyes vanishing data is not acceptable
> storage. double penalty to guy who worked hard to finish early, since the
> one who wrote last wins. we might as well rename it to "lossy storage" or
> "leakage" instead of storage. the issue is not HA because both halves
> believe both sides is operational and no data is lost. Is it not true that
> a user's expectation is that what they put into the file system, they
> should get back from the file system unless there is an error?
>
> you know that feeling you get when you start hearing the hard drive make
> clicking noises because you know that there is a chance you might loose
> data? not worth it, you don't risk it, dump the drive and get something
> that works.  I would at least well document this limitation, so the newbie
> who is considering using it knows what he is getting into and if it is a
> real concern for their needs or not.

This is not a problem if only one entity should ever have the write 
capability for a file, which is desirable for other reasons.





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