On Wed, Oct 22, 2025 at 11:08 PM home user via users < [email protected]> wrote:
> (Fedora-42 workstation) > > Following what's said here: > "https://wiki.archlinux.org/title/Btrfs#Disabling_CoW"; > and here: > " > https://unix.stackexchange.com/questions/635661/how-to-prevent-btrfs-compressing-var > ", > I'm trying to turn off copy-on-write and compression on "/home". > I'm logged in as "root"; I'm in "/root". > I moved the original /home aside to /home_old. > I created a new "/home". > I turned off copy-on-write. > But when I try to turn off compression, I get this: > - - - - - - > bash: chattr +m /home > chattr: Invalid argument while setting flags on /home > > bash: btrfs property set /home compression none > ERROR: failed to set compression for /home: Invalid argument > > - - - - - - > What's wrong? > How should I do this? > You need to tell us why you think this is needed. Are you concerned with one of the drawbacks of COW mentioned in https://archive.kernel.org/oldwiki/btrfs.wiki.kernel.org/index.php/SysadminGuide.html#Copy_on_Write_.28CoW.29 ? It is usually a mistake to move away from distro defaults unless your use-case depends on the changes. Linux is a community effort, so staying with a configuration shared with many others means it is easier for the community to help if you encounter problems. -- George N. White III
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