264
submitted 11 months ago by 0x4E4F@infosec.pub to c/linuxmemes@lemmy.world
you are viewing a single comment's thread
view the rest of the comments
[-] 0x4E4F@infosec.pub 53 points 11 months ago

Timeshift works only with BTRFS subvolumes, thus, if you wanna have backups (snapshots), you have to have subvolumes and not install in the root of a BTRFS filesystem πŸ˜”.

[-] eager_eagle@lemmy.world 19 points 11 months ago

That's only to backup/rollback the root though, right? If one's looking to backup - say - their home dir, they can just recreate the home as a subvolume without reinstalling the system. Or am I mistaken?

[-] AnonStoleMyPants@sopuli.xyz 4 points 11 months ago

You can definitely do this with a few commands.

[-] raldone01@lemmy.world 4 points 11 months ago* (last edited 11 months ago)

https://github.com/raldone01/config_fish/blob/main/tdcff_functions/btrfs_folder_to_subvol.fish

Because I often forget to do it I wrote a little helper script.

This file can be run or sourced and only depends on btrfs-progs and fish.

[-] 0x4E4F@infosec.pub 3 points 11 months ago

Awww man, thanks ☺️.

Good thing I love fiish, it's my default shell πŸ˜‰.

[-] 0x4E4F@infosec.pub 2 points 11 months ago

Yes, you can just set it to mount a, let's say @home, subvolume to /home and that's that, done.

[-] Turun@feddit.de 7 points 11 months ago

If you want to you can just create a new subvolume, mount it temporarily and move all your files from root to there. Then you need to figure out how to make the new subvolume your root directory upon boot and you are done.

[-] 0x4E4F@infosec.pub 1 points 11 months ago* (last edited 11 months ago)

I know how to do that, you set the subvolume as the default one, thus, when mounting, if no options are passed, it always mounts that subvolume as root.

But, you have to disable that. Sure, I set it during install, cuz installers are stupid (if you tell it to install in /@, it will most probably moan), but disable it after first run (set the real root as the default subvol, i.e. mount point) and just add subvol mount options in fstab.

It's just extra steps I have to do now πŸ˜’, that's why the rant.

[-] PrecisePangolin@lemmy.ml 6 points 11 months ago

Thank you for sharing your knowledge.

[-] reflex@kbin.social 2 points 11 months ago* (last edited 11 months ago)

Timeshift

Oh okey so if I have Snapper already, nothing I need to worry about?

[-] valveman@lemmy.eco.br 2 points 11 months ago

Snapper also uses btrfs subvolumes to create snapshots, so if you did create them during your installation process, nothing to worry about.

I don't remember if there is a way to create them after the installation, neither if it's a tough process tho. I used to simply reinstall when I messed up with the subvolumes.

[-] backhdlp@lemmy.blahaj.zone 2 points 11 months ago

sudo btrfs subvolumes create /path/to/subvolume

If you don't configure anything, root will already be a subvolume.

If you wanna make a used directory a subvolume, you have to move the contents first, and move them back after creation.

The only thing that takes time here is the move

[-] 0x4E4F@infosec.pub 1 points 11 months ago* (last edited 11 months ago)

Yeah, but Timeshift uses the Ubuntu style subvolume naming, @ for root, @home for /home, so you have to create them that way, otherwise, it won't work. It can work if you tell it to ignore home, but checks for @ as root on start up.

[-] domi@lemmy.secnd.me 2 points 11 months ago* (last edited 11 months ago)

Check out Btrfs Assistant. It does what Timeshift does with a similar UI but works with any subvolume layout.

[-] 0x4E4F@infosec.pub 1 points 11 months ago

Hm, will check it out, thanks for the suggestion πŸ˜‰.

[-] backhdlp@lemmy.blahaj.zone 2 points 11 months ago

Wasn't aware of that, using snapper for my snapshotting needs.

[-] 0x4E4F@infosec.pub 1 points 11 months ago* (last edited 11 months ago)

I haven't tried it. Does it have like daily, weekly, monthly snapshots setup?

[-] backhdlp@lemmy.blahaj.zone 2 points 11 months ago

You can have hourly, daily, weekly, monthly and yearly. I also use snap-pac to make snapshots before and after pacman transactions.

Check out https://wiki.archlinux.org/title/Snapper

[-] rostby@lemmy.fmhy.net 2 points 11 months ago

Immutable distros rejoice 😎

[-] 0x4E4F@infosec.pub 1 points 11 months ago

Take way too much space... I dual boot on the same drive 🀷.

this post was submitted on 03 Dec 2023
264 points (97.8% liked)

linuxmemes

21197 readers
55 users here now

Hint: :q!


Sister communities:


Community rules (click to expand)

1. Follow the site-wide rules

2. Be civil
  • Understand the difference between a joke and an insult.
  • Do not harrass or attack members of the community for any reason.
  • Leave remarks of "peasantry" to the PCMR community. If you dislike an OS/service/application, attack the thing you dislike, not the individuals who use it. Some people may not have a choice.
  • Bigotry will not be tolerated.
  • These rules are somewhat loosened when the subject is a public figure. Still, do not attack their person or incite harrassment.
  • 3. Post Linux-related content
  • Including Unix and BSD.
  • Non-Linux content is acceptable as long as it makes a reference to Linux. For example, the poorly made mockery of sudo in Windows.
  • No porn. Even if you watch it on a Linux machine.
  • 4. No recent reposts
  • Everybody uses Arch btw, can't quit Vim, and wants to interject for a moment. You can stop now.

  • Please report posts and comments that break these rules!

    founded 1 year ago
    MODERATORS