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What Filesystem? (lemmy.world)
submitted 1 year ago by cianmor@lemmy.world to c/linux@lemmy.ml

What filesystem is currently best for a single nvme drive with regard to performance read/write as well as stability/no file loss? ext4 seems very old, btrfs is used by RHEL, ZFS seems to be quite good... what do people tend to use nowadays? What is an arch users go-to filesystem?

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[-] OsrsNeedsF2P@lemmy.ml 1 points 1 year ago

So you're going to make snapshots of the ext4 filesystem onto the BTRFS one?

[-] root@aussie.zone 1 points 1 year ago

On the contrary, my intention is to make snapshots of the OS (btrfs) and my idea is to store the snapshots on the /home nvme drive (ext4).

I don't know if that's the standard practice or if I'm over complicating things. My SSD is only 240Gb (I think) while my nvme is a 1Tb drive, thus the intention to store snapshots on the nvme. Maybe the 240Gb is sufficient for say a month's worth of snapshots plus the OS?

[-] rocketeer8015@discuss.tchncs.de 2 points 1 year ago

No, that’s a very bad idea. BTRFS has deduplication, without that the snapshots would take up way to much space. Also it’s too many writes since ext4 doesn’t use cow and would have to do distinct writes for every snapshot.

The 240 gb are plenty for a root system without /home and years worth of snapshots on a btrfs volume, only the changes take up space so the amount of snapshots hardly matters.

For /home either ext4, xfs or btrfs is fine. Personally I only use a single btrfs volume and put certain folders in their own subvolumes so they can have different settings for snapshots(no snapshots for /home, tmp and cache folders).

[-] root@aussie.zone 1 points 1 year ago

Noted. Thanks for your clear response. I'll just keep it simple have the OS snapshots on the same partition.

[-] fraenki@feddit.de 2 points 1 year ago

It's more important to backup your /home than /. /home is where you store your crucial files.

[-] root@aussie.zone 1 points 1 year ago

Yes, that's true. Then again, I'm mainly using my PC for gaming and most of what will be in /home will be game installs. I have my photos and music backups in a separate HDD.

I think at the end of the day, what I'm trying to achieve with the btrfs snapshots is to be able to roll back my OS in case a system update goes wrong, or I did something I shouldn't have. :p

this post was submitted on 20 Jul 2023
89 points (91.6% liked)

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