Backblaze has stopped backing up OneDrive and Dropbox folders and maybe others

Ironically drop box and one drive folders I can still somewhat understand as they are "backuped" in other ways (but potentially not reliable so I also understand why people do not like that).

But .git? It does not mean you have it synced to GitHub or anything reliable?

If you do anything then only backup the .git folder and not the checkout.

But backing up the checkout and not the .git folder is crazy.

Managing backup exclusions strikes again. It's impossible. Either commit to backing up the full disk, including the 80% of easily regenerated/redownloaded etc. data, or risk the 0.001% critical 16 byte file that turns out to contain your Bitcoin wallet key or god knows what else. I've been bitten by this more times than I'd like to admit managing my own backups, it's hard to expect a shrink-wrapped provider to do much better. It only takes one dumb simplification like "my Downloads folder is junk, no need to back that up" combined with (no doubt, years later) downloading say a 1Password recovery PDF that you lazily decide will live in that folder, and the stage is set.

Pinning this squarely on user error. Backblaze could clearly have done better, but it's such a well known failure mode that it's not much far off refusing to test restores of a bunch of tapes left in the sun for a decade.

I don't remember why I started doing it, but I don't bulk exclude .cache for some reason or other. I have a script that strips down larger known caches as part of the backup. But the logic, whatever it was, is easy to understand: you're relying on apps to correctly categorise what is vs. isn't cache.

Also consider e.g. ~/.cache/thumbnails. It's easy to understand as a cache, but if the thumbnails were of photos on an SD card that gets lost or immediately dies, is it still a cache? It might be the only copy of some once-in-a-lifetime event or holiday where the card didn't make it back with you. Something like this actually happened to me, but in that case, the "cache" was a tarball of an old photo gallery generated from the originals that ought to have been deleted.

It's just really hard to know upfront whether something is actually important or not. Same for the Downloads folder. Vendor goes bankrupt, removes old software versions, etc. The only safe thing you can really do is hold your nose and save the whole lot.

Exclusions are one thing, but I've had Backblaze _fail to restore a file_. I pay for unlimited history.

I contacted the support asking WTF, "oh the file got deleted at some point, sorry for that", and they offered me 3 months of credits.

I do not trust my Backblaze backups anymore.

I can understand in theory why they wouldn't want to back up .git folders as-is. Git has a serious object count bloat problem if you have any repository with a good amount of commit history, which causes a lot of unnecessary overhead in just scanning the folder for files alone.

I don't quite understand why it's still like this; it's probably the biggest reason why git tends to play poorly with a lot of filesystem tools (not just backups). If it'd been something like an SQLite database instead (just an example really), you wouldn't get so much unnecessary inode bloat.

At the same time Backblaze is a backup solution. The need to back up everything is sort of baked in there. They promise to be the third backup solution in a three layer strategy (backup directly connected, backup in home, backup external), and that third one is probably the single most important one of them all since it's the one you're going to be touching the least in an ideal scenario. They really can't be excluding any files whatsoever.

The cloud service exclusion is similarly bad, although much worse. Imagine getting hit by a cryptoworm. Your cloud storage tool is dutifully going to sync everything encrypted, junking up your entire storage across devices and because restoring old versions is both ass and near impossible at scale, you need an actual backup solution for that situation. Backblaze excluding files in those folders feels like a complete misunderstanding of what their purpose should be.