Setting file system size about yas3fs HOT 5 OPEN

Sorry for the delay in the answer. I don't think setting the f_stat would do what you ask, because there is no way to get the size of a "folder" on S3 than doing (every time) a full "list", that is slow and costly.
I could cache that (as I do for a readdir) and that could be an interesting use case, but not easy to implement.

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What if you put some sort of special file/object on s3 to hold the size/used/free information, and update it on writes, or when adding a file? It would still be an overhead on network traffic, but I think list operations are the most expensive, so, doing more writes might still be cheaper. Also, I didn't studied the code enough to be able to be specific, but I'm sure there's some caching you could do to minimize even those extra writes.

Anyway, I might have some time to invest on it soon, since it's a feature that would really help my use case, so maybe I will do a pull request, and we can discuss possible solutions =)

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Hi, please feel free to do a pull request!
Probably a good candidate to host S3 used/free space would be DynamoDB, and keeping that updated would be easier (and faster) as DynamoDB supports atomic counters.

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Just a +1 that is is actually a very useful feature - folder size limit, alas I don't have the appropriate skills to help on this. Just thought I'd show that others would like this too should it ever be possible :)

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Unfortunately, I might never get around to help with this, since we might move in the direction of implementing direct access to S3, instead of using a fuse interface. =(

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