Incremental backups to optical media: tar, dar, or something else?
traches @ traches @sh.itjust.works Posts 2Comments 429Joined 2 yr. ago
traches @ traches @sh.itjust.works
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Books, specifically Discworld?
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Books, specifically Discworld?
Woah, that's cool! I didn't know you just
zfs send
anywhere. I suppose I'd have to split it up manually withsplit
or something to get 50gb chunks?Dar has
dar_manager
which you can use to create a database of snapshots and slices that you can use to locate individual files, but honestly if I'm using this backup it'll almost certainly be a full restore after some cataclysm. If I just want a few files I'll use one of my other, always-online backups.Edit: Clicked save before I was finished
I'm more concerned with robustness than efficiency. Dar will warn you about corruption, which should only affect that particular file and not the whole archive. Tar will allow you to read past errors so the whole archive won't be ruined, but I'm not sure how bad the affects would be. I'm really not a fan of a solution that needs every part of every disk to be read perfectly.
I could chunk them up manually, but we're talking about 2TB of lumpy data, spread across hundreds of thousands of files. I'll definitely need some sort of tooling to track changes, I'm not doing that manually and I bounce around the photo library changing metadata all the time.