On 23/06/2020 12:23, Neal Gompa wrote:
Hey all,
Chris Murphy and I are working on a change to switch Fedora's desktop
variants to Btrfs[1]. The plan is for all Fedora desktop variants to
switch over, which means both release-blocking desktops
(Workstation/GNOME and KDE) will use Btrfs by default going forward. I
expect this to be a smooth change, as Btrfs has been a
release-blocking filesystem for many years now (at least since Fedora
20) and has had OpenQA tests to verify its functionality for nearly as
long as OpenQA has been in use in Fedora for testing. And I've
personally been using Btrfs on all my Fedora systems (~5 physical
machines and ~100 virtual machines) since 2015 with no issues.
My expectation is that there should be no work for the SIG to do
(beyond me doing the work, of course). For all the words that are in
the change proposal[1], the extent of the change is to flip the
settings in Anaconda to use Btrfs by default on new installations.
I'm interested in hearing about your feedback on the change proposal.
I am excited about this, personally, as I think there's some serious
opportunity to collaborate with KDE upstream and our friends at
openSUSE on taking advantage of Btrfs features to make a smoother
experience.
Thanks in advance and best regards,
Neal
[1]: https://fedoraproject.org/wiki/Changes/BtrfsByDefault
I tried BTRFS on a system and was happy until I had a problem that
couldn't be fixed and it made remote backups impossible. Our system
admin and myself tried to fix it and every time ended up at the same
point that everything suggested was a full rebuild of the damaged file
system after a reformat.
Are all the tools there now to fix all file system faults other than a
failed drive?
I don't remember the details of the problem as it was a couple of years
ago. I personally will avoid BTRFS until I know that there are fsck
tools available.
While searching I am still seeing many comments from last month that end
with stuff like this.
***
My advice:
Do not use btrfsck
Do not try to fix the broken partition
Make a backup in the simplest way possible, e.g. with dd
As @SleeplessSloth said, its usually possible to mount it read
only, and create a new partition with the files.
https://github.com/maharmstone/btrfs/issues/215
***
Archlinux has a warning about using Btrfs.
https://wiki.archlinux.org/index.php/Btrfs
Warning: Btrfs has some features that are unstable. See the Btrfs Wiki's
Status, Is Btrfs stable? and Getting started for more detailed
information. See the #Known issues section.
***
But for me, this is the most telling.
https://btrfs.wiki.kernel.org/index.php/FAQ#Is_btrfs_stable.3F
Is btrfs stable?
Short answer: Maybe.
***
From the above links, until at least in the btrfs.wiki.kernel.org it
should be classified as "Stable" before being a default file system.
Just my thoughts
Some of the features in btrfs were the reason I tried it.
Robin
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