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lemmy - Link to source

Newbie to BTRFS- how do I use Timeshift to create backups on another SSD?

Hey there, folks! Currently playing around with a laptop that's got three SSDs. Running Arch but that isn't quite related. I have everything configured on one SSD, the other two are totally fresh. What do I need to do to setup one of those fresh SSDs for Timeshift backups? Please walk me through it from the very start- I think I understand some parts but I'm not too certain.

I can format the drives using mkfs.btrfs without any issues, but I'm confused about how I can add subvolumes and configure their root permissions properly to allow Timeshift snapshots.

EDIT: I see now that I misunderstood what Timeshift does. New question- which tool can I use to make a backup of my entire filesystem onto another drive such that it can be restored?

This entry was edited (17 hours ago)
in reply to Cornflake

lemmy - Link to source

mutual_ayed

Build the snapshot with the below file

```# create read-only temporary snapshot of volume
btrfs subvolume snapshot -r /path-to-sv/subvol /path-to-sv/subvol.ro

send the subvolume to file, compress with parallel ZSTD & monitor progress


btrfs send /path-to-sv/subvol.snap.ro | \
pv -c | pzstd -16 | pv -c | \
dd of=/path-to-external-backup/subvol.zstd.back

delete read-only snapshot


btrfs subvolume delete /path-to-sv/subvol.ro

<br />To restore subvolume from backup we run the process in reverse:

read backup file and decompress the stream, redirect to temporary read-only snapshot


dd if=/path-to-external-backup/subvol.zstd.back | \
pv -c | pzstd -d | pv -c | \
btrfs receive /path-to-sv/

make a RW subvolume


btrfs subvolume snapshot subvol.ro subvol

delete temporary snapshot


btrfs subvolume delete /path-to-sv/subvol.ro
```

From here

superuser.com/questions/139624…

You might want to make this into a systemd timer to run at boot or before shutting down

linuxconfig.org/how-to-schedul…

This entry was edited (16 hours ago)
in reply to Cornflake

lemmy - Link to source

catloaf

github.com/linuxmint/timeshift

For btrfs snapshots, storage on other disks is not supported.

Timeshift is designed to protect system files and settings. It is NOT a backup tool and is not meant to protect user data.

GitHub - linuxmint/timeshift: System restore tool for Linux. Creates filesystem snapshots using rsync+hardlinks, or BTRFS snapshots. Supports scheduled snapshots, multiple backup levels, and exclude filters. Snapshots can be restored while system is runni

System restore tool for Linux. Creates filesystem snapshots using rsync+hardlinks, or BTRFS snapshots. Supports scheduled snapshots, multiple backup levels, and exclude filters. Snapshots can be re...
GitHub
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