very simple datastore reimplementation

Eben Eliason eben.eliason at
Fri May 9 14:34:01 EDT 2008

On Fri, May 9, 2008 at 1:34 PM, Marco Pesenti Gritti <mpgritti at> wrote:
> On Fri, May 9, 2008 at 6:11 PM, Tomeu Vizoso <tomeu at> wrote:
>> On Fri, May 9, 2008 at 2:15 PM, Jim Gettys <jg at> wrote:
>>> FUSE is great, but...
>>> It means interoperability must be an explicit planned-in-advance action:
>>> if a datastore is already on a removable device in your pocket, and you
>>> need to access something on a foreign system, you are stuck unless there
>>> is some minimal level of human interpretability of the file system...
>>> Instead, you have to dig up a system with FUSE/olpcfs installed, and
>>> then copy the files to a conventional file structure.
>>> This is the use case that's hard to get around.
>> Ok, I think I see now where is the misunderstanding.
>> In the first post in this thread, I tried to explain that this
>> proposal would use removable devices in the same way they are used in
>> other systems and that the DS would have nothing to do with them:
> I think expanding the space available to the DS through usb devices or
> sd cards is a use case we should take in consideration when designing
> the DS, even if we don't plan to support it right now.

There was a previous discussion around this idea, that ultimately led
me to a place where I think that its going to be extrememly ahrd, if
not impossible, to accomplish this in a sufficiently useful way.
Unless we can actually make the extra space appear as though its an
extension of the Journal (and not an external device) do I see any
real benefit.

- Eben

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