Tell me why I shouldn't use btrfs (lemmy.zip)

submitted 2 years ago by possiblylinux127@lemmy.zip to c/selfhosted@lemmy.world

114 comments fedilink hide all child comments

About a year ago I switched to ZFS for Proxmox so that I wouldn't be running technology preview.

Btrfs gave me no issues for years and I even replaced a dying disk with no issues. I use raid 1 for my Proxmox machines. Anyway I moved to ZFS and it has been a less that ideal experience. The separate kernel modules mean that I can't downgrade the kernel plus the performance on my hardware is abysmal. I get only like 50-100mb/s vs the several hundred I would get with btrfs.

Any reason I shouldn't go back to btrfs? There seems to be a community fear of btrfs eating data or having unexplainable errors. That is sad to hear as btrfs has had lots of time to mature in the last 8 years. I would never have considered it 5-6 years ago but now it seems like a solid choice.

Anyone else pondering or using btrfs? It seems like a solid choice.

you are viewing a single comment's thread
view the rest of the comments

[-] stuner@lemmy.world 2 points 2 years ago* (last edited 2 years ago)

I'm seeing very similar speeds on my two-HDD RAID1. The computer has an AMD 8500G CPU but the load from ZFS is minimal. Reading / writing a 50GB /dev/urandom file (larger than the cache) gives me:

169 MB/s write
254 MB/s read

What's your setup?

[-] possiblylinux127@lemmy.zip 1 points 2 years ago

Maybe I am CPU bottlenecked. I have a mix of i5-8500 and i7-6700k

The drives are a mix but I get almost the same performance across machines

[-] stuner@lemmy.world 2 points 2 years ago

It's possible, but you should be able to see it quite easily. In my case, the CPU utilization was very low, so the same test should also not be CPU-bottlenecked on your system.

[-] possiblylinux127@lemmy.zip 0 points 2 years ago

Is your machine part of a cluster by chance? Of so, when you do a VM transfer what performance do you see?

[-] stuner@lemmy.world 1 points 2 years ago

Unfotunately, I can help you with that. The machine is not running any VMs.

this post was submitted on 23 Nov 2024

99 points (91.6% liked)

Selfhosted

62903 readers

307 users here now

A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

Rules:

Detailed Rules Post

Be civil.
No spam.
Posts are to be related to self-hosting.
Don't duplicate the full text of your blog or readme if you're providing a link.
Submission headline should match the article title.
No trolling.
Promotion posts require active participation, with an account that is at least 30 days old. F/LOSS without a paywall has exceptions, with requirements. See the rules link for details. Tags [CBH] or [AIP] are required, see the links in Rule 8 for details.
AI-related discussions and AI-involved promotional posts have additional requirements for tagging, as noted in Rule 7 and the AI & Promotional Post Expanded Rules post, and find example disclosures here.

Resources:

selfh.st Newsletter and index of selfhosted software and apps
awesome-selfhosted software
awesome-sysadmin resources
Self-Hosted Podcast from Jupiter Broadcasting

Any issues on the community? Report it using the report flag.

Questions? DM the mods!

founded 3 years ago

MODERATORS

curbstickle@anarchist.nexus

curbstickle_lw@lemmy.world