On 9/24/25 6:02 PM, home user via users wrote:
In an earlier thread ("questions: file systems (was: /var/lib/flatpak/
repo/objects...)"), Will referred me to the Redhat website
"https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/
html-single/managing_file_systems/index#types-of-file-systems_overview-
of-available-file-systems".
I've read that a few times. I've also examined wikipedia's "Comparison
of File Systems":
"https://en.wikipedia.org/wiki/Comparison_of_file_systems";.
It seems the main file systems to consider are BTRFS, ext4, and XFS.
Based on the wikipedia article, I made a table showing how those three
choices differ. Based on that comparison, the Redhat article, and other
discussion on this list (including in this thread), I notice a few of
you seem to be real fans of BTRFS, and a few of you seem to be quite
critical of BTRFS. I'm currently weakly leaning towards BTRFS for the
new desktop (for those things where I have a choice). I do recognize
the choice of file system is a matter of "use case" (broadly speaking)
and, more likely than not, personal preference.
Questions:
If I use BTRFS for /home (that's the default, right?), can I easily turn
off
* copy-on-write,
* compression,
* encryption, and
* (maybe) data deduplication
for /home, but still easily use those capabilities on a few scattered
files and sub-directories within /home?
Why would you want to turn those options off?
Encryption is normally done at the partition level. btrfs doesn't have
encryption itself. You would create a LUKS volume on the partition and
then create the btrfs filesystem on top of that. I've never personally
used encryption.
Am I correct in thinking that all top level directories other than /home
must use specific file systems and I should not concern myself with
those, but use the defaults?
/boot is a separate partition by default, but could be included in /
All the other top level directories (other than /home) are either part
of / or are special filesystems in RAM. e.g. procfs, sysfs, tmpfs, etc.
Unless you're expecting space issues, you normally don't do anything
special with them.
--
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