Support for large files

[changlinli]

Normal files in B2 have an upper limit of 5GB. There is support for files up to 10TB, but it requires a separate API to use. This bit me recently where I kept getting odd Java exceptions (i guess B2 doesn't have the cleanest error messages) when uploading files.

This might be something that is better suited for your dependency, but just wanted to give you a heads up that this sometimes happens if you wanted to look into it (I'll try to pick up Go one of these weekends and have a whack at it if you haven't).

Thanks a bunch for writing this special remote!

[encryptio]

Good point; I always use git-annex's built-in chunking support because it makes everything resumable (you can enable it by passing chunk=100M or similar to initremote or enableremote, and even change it while data is at rest in the remote.)

Looks like the large file API is not supported by the upstream B2 client library I use; I'll open an issue there to add it.