[tahoe-dev] I assumed each share would go to a different server...

Greg Troxel gdt at ir.bbn.com
Sun Jan 9 16:35:20 UTC 2011

Shawn Willden <shawn at willden.org> writes:

> On Sun, Jan 9, 2011 at 7:19 AM, Josh Wilcox <wilcoxjg at gmail.com> wrote:
>>   I was surprised because I assumed each share would be sent to a different
>> server, but this error message seems to be saying that tahoe was only
>> looking for 7 distinct servers.
> The default is to use 10 shares, but "servers of happiness" is set to seven,
> so Tahoe only _requires_ seven servers.  If it can get 10 servers to take
> one share each, it will, but if there aren't that many servers accepting
> shares (as on the volunteer grid right now -- there are only six servers
> with available space), then the 10 shares will be placed on fewer servers.
>  If there are less than seven servers, then the upload will fail.

I think people are talking about the pubgrid.

The pubgrid seems to be for not huge amounts of data, so I wonder if
others would run more serers.  I am currently running 2, and 1 is full.
I fixed that by removing large shares and allowing a bit more space.

It would be nice to have more working servers (with reachable internet
addresses from client-only nodes behind NATS!), even if they only
offered a few GB each.

But we may need a config to disallow big shares, or implement accounting
on the pubgrid :-)

I've got a tcpdump of one of my servers that I can look at in my Copious
Spare Time; that may be interesting.

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