Hey there Heitor!
Nice to hear from ya bud!! I actually did get this to work.
The key that lead to success was to add a 'use_cache' option.
I basically assigned a 10GB EBS volume just to use as a cache.
It was just an experiment, and I planned on getting did of the
10GB EBS and get one much smaller to use later.
But what I found is that the 10GB volume filled up to 8.5GB
during backups and restores! Everything worked, but it appears
that a large cache is the only answer. Almost defeats the
purpose of using S3, but not quite I hope.
I think what was happening previously was that S3FS was
hitting some sort of default cache limit and dying out.
It'll be interesting to see how this pans out. Cuz I was
planning on adding a number of new hosts to backups that I
previously couldn't afford to due to the expense of storing my
backup tapes on EBS. S3 is way cheaper.
I can let you guys know how it goes if you're intetested.
Thanks,
Tim