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Kopia: Fast and secure open-source backup software

kopia.io

81–90 of 138 posts

Re: Kopia: Fast and secure open-source backup software

#81

I noticed this project while comparing restic/borg and am thinking about trying it. Initially I thought this was a corporate project and was looking for the monetization model, but then I found https://github.com/kopia/kopia/blob/master/GOVERNANCE.md I feel like the project might benefit from making their governance model more prominent on the website.

How did it fare against Restic?

Re: Kopia: Fast and secure open-source backup software

#82
I use Kopia to backup the kids Windows laptops to the home file server over SFTP. The advantages over other options I've found so far:

* Can run in a "I haven't done a backup for a while, so I'll do one now" mode when the laptop is awake.

* Both laptops can be writing to the same repository at the same time, sharing common files, dedup, etc.

Missing:

* Only supports VSS via a couple of scripts I couldn't get working. (Restic is nice with that.)

Re: Kopia: Fast and secure open-source backup software

#83

Used it for a while, recently tried to restore some things and it failed, taking a really long time to restore some snapshots compared to other things I've tried. Switched to restic instead. Really like what kopia is but I'll wait a few more years before considering it for something, but right now I'm happy with restic. Too bad no one besides kopia does ecc, which is the reason I switched, but when I checked out why…

This has been my experience too with Kopia.

I tried to restore a ~200 GB file (stored remotely on a Hetzner Storage Box), and it failed (or at least did not finish after being left for ~20 hours; there was also no progress indicator or status I could find in the UI).

I also tried to restore a folder with about ~32 GB of data in it, and that also failed (the UI did report an error, but I don't recall it being useful).

Also, in general use, the UI would get disconnected from the repository every few days, and sometimes the backup overview list would show folders as being size 0 (which maybe indicated they failed; they showed up with an "incomplete" [or similar] tag in the UI).

Re: Kopia: Fast and secure open-source backup software

#84
post #4

Any comparisons to Restic? Looks like basically the same thing but with a GUI available. Edit: Found this very ad-hoc "benchmark" from over a year ago claiming that Kopia managed significantly better deduplication than Restic after several backups (what took Restic 2.2GB, Kopia did in https://github.com/kopia/kopia/issues/1809#issuecomment-1067... Edit Edit: Never mind, this benchmark was from before Restic supported…

> Kopia managed significantly better deduplication

> ... was from before Restic supported compression, which is the why its size is so much larger

deduplication != compression...

So we don't actually know which has better deduplication? Compression algorithms are well-established and you can find a million people who benchmarked them all for different purposes, but deduplication algorithms I never saw a comparison of. I don't even know if these things have proper names or if people just refer to them as "rsync-like"

Re: Kopia: Fast and secure open-source backup software

#85

I use Restic for personal backups and at work, but I thought I'd try Kopia to see if it'd be a good fit for my less techie relatives. This was about a year ago. The UI didn't seem like a good fit for those who are less technical. I don't remember the specifics. Does anyone have recommendations for backup services for the average user?

> I thought I'd try Kopia [for] my less techie relatives. This was about a year ago.

> The UI didn't seem like a good fit

Didn't seem like, or wasn't based on your trying it? Did you end up trying it? If not, what do your relatives use currently, is that better (even if not ideal, since you're still asking for recommendations)?

Re: Kopia: Fast and secure open-source backup software

#86
post #3

Hm interesting name, I spent a few seconds on the site to figure out origin but no luck. "Kopia" means "copy" in Swedish and probably more Nordic languages, too. Very hard to pronounce in English so it would be interesting to hear it said.

To be more precise it means "copy" in the noun sense, not the verb. It's a distinction that a lot of bad translations from English fail to make, like when X changed "tweet" to "post".

Re: Kopia: Fast and secure open-source backup software

#87
post #63

We are trying to use it for large backups of a production item, and it has not been a complete smooth ride all along. We have many files (millions) and lots of churn over ~80Tb total. Kopia has exhibited some issues: - takes about 120GB (!) of ram to perform regular maintenance & takes about 5hrs to do so. There are ideas floating around to cherry pick the large inefficiencies in the GC code but it’s yet to be worked…

If you're looking for ZFS backed why not rsync.net?

Am I dumb for just doing some rclone+rsync.net?

Re: Kopia: Fast and secure open-source backup software

#88

I noticed this project while comparing restic/borg and am thinking about trying it. Initially I thought this was a corporate project and was looking for the monetization model, but then I found https://github.com/kopia/kopia/blob/master/GOVERNANCE.md I feel like the project might benefit from making their governance model more prominent on the website.

How did it fare against Restic?

I found Restic slower in general, though Kopia is not super fast either when you have many backup sources (in my case I have 30+ separate directories I am backing up; Kopia works amazingly fast per single directory but make them 30+ and it's not as fast because it's basically going through them one by one and it's NOT going through them in one pass, sadly).

Re: Kopia: Fast and secure open-source backup software

#89
post #18

Love the asciinema demo. More projects should use it. Sometimes I have the urge to make a pull request on Github projects without any screenshot or video.

I personally don't see the point of CLI videos like asciinema, just let me scroll through the damn CLI history.

Yeah. / An ideal tool IMO would provide searching, skimming, and playback.

Re: Kopia: Fast and secure open-source backup software

#90

I use Kopia to backup the kids Windows laptops to the home file server over SFTP. The advantages over other options I've found so far: * Can run in a "I haven't done a backup for a while, so I'll do one now" mode when the laptop is awake. * Both laptops can be writing to the same repository at the same time, sharing common files, dedup, etc. Missing: * Only supports VSS via a couple of scripts I couldn't get working.…

> Only supports VSS via a couple of scripts I couldn't get working.

Is https://kopia.io/docs/advanced/actions/#windows-shadow-copy not working for you?

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