I've forgot to add, that for compression, this, again, works only for newly created/accesses files only, so after adding compression to fstab (and reboot), you might want to run a defragmentation `sudo btrfs filesystem defragment -r <mount point>`. There was a recent article about that too: https://fedoramagazine.org/working-with-btrfs-compression/ --- Best regards, Alex ------- Original Message ------- On Tuesday, May 2nd, 2023 at 12:04, Alex Gurenko <agurenko@xxxxxxxxxxxxxx> wrote: > There was an article back in the days of btrfs introduction that described the process: https://fedoramagazine.org/convert-your-filesystem-to-btrfs/ > > I've used it myself without any issues back then, I would assume it's still safe to do so now. > > I ran it like this for a few more releases without issues, until I decided to re-install fresh. > > The only downside would probably be (please keep me honest here), the defaults might not apply. > > There are few things that are done on a fresh install, which will probably won't apply on a converted system: > > - COW (copy-on-write) disabled for /var/lib/libvirt/images > - probably on other directories? > - can be done manually with `chattr -R +C <path>` but it only works for new files in said path, so you might need to move things out and back in > > - enable compression by making sure fstab includes `,compress=zstd:1` > - based on your position on async discard [0], you might want to add `nodiscard` to fstab as well, but it seems to be okay with latest fixes kernels 6.2.13+ or 6.3.0, at least on a desktop > > [0] https://discussion.fedoraproject.org/t/btrfs-discard-storm-on-fedora/79997/28 > > --- > Best regards, Alex > > > > > ------- Original Message ------- > On Tuesday, May 2nd, 2023 at 11:29, Paul Smith phhs80@xxxxxxxxx wrote: > > > > > Dear All, > > > > I have always upgraded Fedora from the previously installed version. > > Consequently, I still have ext4. To have btrfs, is it needed to do a > > Fedora clean install? > > > > Thanks in advance, > > > > Paul > > _______________________________________________ > > users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx > > To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx > > Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ > > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > > List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx > > Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
