ZFS snapshots of VM Truenas datasets - am I safe? (lemmy.ml)

submitted 2 days ago by trilobite@lemmy.ml to c/selfhosted@lemmy.world

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Hi folks, I've got a VM that is running my Firefly iii instance and Paperless instance as containers. A lot of work and time goes into managing these tools and I want to make sure I don't lose them. This is my setup:

Turenas Scale machine 1 -> VM1 - Docker containers. The VM sits on its own dataset in Truenas.

I replicate the dataset to Truenas Scale 2 one a week and this machine only goes on on Sunday to save power.

I Rsync the dataset to a 3rd machine where there is a hard disk that I store offsite.

I recognize that I could lose up to one week of work but that is nothing compared to the human hrs spent building those databases from scratch.

Apart from snapshotting e rsyncing every day, what else could I do to make this more resilient without increasing CAPEX and OPEX costs?

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[-] just_another_person@lemmy.world 3 points 2 days ago

Test a restore and see. Only way to know for sure.

[-] trilobite@lemmy.ml 2 points 2 days ago* (last edited 2 days ago)

make me shake ... brrr

I'm going to try and see is I can get a VM running on the second Truenas server using the replicated dataset. I only use the second machine to duplicate datasets in case the first machine fails and have to rebuild it.

[-] just_another_person@lemmy.world 1 points 2 days ago

That'll do it if all you're checking for is valid working operation after a restore.

Make some notes that you tested it and what you had to do to get it working in the backup job as well. Could save you A LOT of panic in the future.

this post was submitted on 22 Dec 2024

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