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How to image a Debian system on a zfs mirror? (discuss.tchncs.de)

submitted 5 months ago* (last edited 5 months ago) by [email protected] to c/[email protected]

19 comments fedilink hide all child comments

I have set up a refurbished PC as a media PC with storage. The OS, Debian, is on an m.2 nvme disk of 256 GB. I have connected 2x4TB risks in zfs mirror mode to store my media.

Off late, while booting, I've noticed some messages that suggest that the health of nvme disk is not good. Searching the error, i realised that I should not rely on it. I've done a number of tweaks to set up my system the way I like that I want to save by creating an image of the OS drive on a fresh nvme disk of same size that I have.

How do I go about doing it? I could boot using a live USB and create the image on the HDDs but the live USB OS won't recognise my zfs, right? Is using another external disk or another PC my only option here?

Thanks and cheers!

PS: The machine is a HP Elitedesk 800 G3 that has a wifi port that I've heard can be used as additional port for m.2 drives. Is it true?

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[–] [email protected] 5 points 5 months ago* (last edited 5 months ago) (4 children)

don't mess around with imaging to a file on the zfs, then restoring it. simply clone nvme -> nvme using a usb nvme adapter then replace the internal with the clone.

[–] [email protected] 4 points 5 months ago (3 children)

I would like to avoid buying additional hardware if possible.

[–] [email protected] 5 points 5 months ago (1 children)

usb nvme adapters are not expensive and it likely won't be the only time you need it. they are a handy accessory to have on hand if you have nvme storage.

[–] [email protected] 3 points 5 months ago

I'll definitely take this route if the wifi slot will not support the m.2 drive. Thanks for the suggestion.

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