Fedora Cloud 35 Approved To Use Btrfs By Default

[kloczek]

why RHEL 8 removed ?

Give them a bit more time 😊

[Zan Lynx]

How much CPU does brtfs use these days? That's a metric that is rarely benchmarked, but might be quite important. AFAIR it used to be quite bad. with btrfs.

It is only a problem on SSD, as far as I can tell. When a file gets a lot of fragmentation due to Copy On Write then the CPU usage goes up. That also happens if a lot of snapshots are used.

That said, I don't have a problem with my Fedora NAS. It's using a 250G Samsung NVMe for its root drive with btrfs. I'm running snapper timeline on everything. There are about 50 snapshots.

There is also a small amount of increased CPU and disk usage on the HDD RAID10 because I have it mounted with the "autodefrag" option, so it spends some time rewriting small fragments.

And as always, don't use btrfs for inappropriate types of files and complain about it. If you want to run a database service use XFS or EXT4.

[brent]

How much CPU does brtfs use these days? That's a metric that is rarely benchmarked, but might be quite important. AFAIR it used to be quite bad. with btrfs.

[Ananace]

why RHEL 8 removed ?

there any hope for this to get support in windows and maybe mac too

For Windows there's the https://github.com/maharmstone/btrfs driver - which is also used by ReactOS, it's worked quite well in my limited usage.

[Aryma]

why RHEL 8 removed ?

there any hope for this to get support in windows and maybe mac too

[skeevy420]

Three months after: "Fedora disables BTRFS as the default and reverts to EXT4... again"

(just a joke)

If Ext4 ever picks up inline (LZ4/Zstd) compression I'd totally expect that headline.

[bash2bash]

What is sad, is that major cloud providers like digitalocean, linode and hetzner, do not support anything other than ext4.

Sure you can force-format btrfs or any other file system, but their services all break!! You can't do backups, you can't resize partitions, you can't do migrations, you can't do pretty much anything if you don't use ext4. It seems this is a major issue with their platform tools but they seem incapable of supporting anything other than ext4.

[rastersoft]

Three months after: "Fedora disables BTRFS as the default and reverts to EXT4... again"

(just a joke)

[skeevy420]

what different between ext4 and btrfs

why other distro don't use it as default ?

Simplest answer: A lot. BTRFS supports features Ext4 doesn't and vice-a-versa. Long answer: Wikipedia.

Ext4 is tried and true which is traditionally why most distributions use it. It isn't as feature-filled as BTRFS, but the features it has are good enough for most people.

BTRFS has gotten a lot better in the past few years and lately has picked up really spiffy things like Zstd compression so it is starting to pick up momentum. BTRFS seems to have really picked up adoption speed over the past year and a half.

[NobodyXu]

what different between ext4 and btrfs

why other distro don't use it as default ?

Here's some of the features mentioned in the article:

Among the Btrfs features of interest to the Fedora Cloud folks are transparent file-system compression, copy-on-write (CoW) features, reflinks and snapshots, greater data integrity, online shrink and grow, and the other attributes usually trumpeted when talking about Btrfs.

These features are not present in ext4, and some of them also doesn't present in xfs.

Though there is one filesystem that have most of them except for the online shrinking, zfs on linux.

Btrfs is kind of inspired by it and picked because zfs is created by Oracle, the open source killer, and release it under common creative license, which make it possible for Oracle to make some sneaky move if it is ever inlined into linux,