How to convert root directory into a subvolume in btrfs?

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grub-btrfs grub grub2 Snapshot Btrfs

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  • weywot

    My notes on using Pop!_OS

    • When I installed gentoo I only used btrfs because of it's compression. Now I've learned of subvolumes and snapshots. A common choice (I think) is to have your root directory be a subvolume, and your home directory be another subvolume, and have nothing written on the top level volume. Basically I want the sort of setup expalined here (except the swap file, of course). But I've already installed all of my stuff on the top level volume it seems. Is is possible to 'convert' my system to a scheme like the one shown in the guide?

  • grub-btrfs

    Include btrfs snapshots at boot options. (Grub menu)

    • Quick search gives me grub-btrfs which seems to support my setup fine. No "mounting over itself" invloved, you can just pass subvol=... at mount/boot time. I'll have to play with it some day. Note that I'm not using an initrd.

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    Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

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