On Thu, Jan 7, 2021 at 7:54 AM Daniel Pocock <daniel@xxxxxxxxxx> wrote: > > > > On 07/01/2021 02:02, Neal Gompa wrote: > > On Wed, Jan 6, 2021 at 6:27 PM Peter Robinson <pbrobinson@xxxxxxxxx> wrote: > >> > >> On Wed, Jan 6, 2021 at 11:25 PM Neal Gompa <ngompa13@xxxxxxxxx> wrote: > >>> > >>> On Wed, Jan 6, 2021 at 6:03 PM Peter Robinson <pbrobinson@xxxxxxxxx> wrote: > >>>> > >>>>> Regardless of the packages above, I still think the Btrfs issue is the > >>>>> biggest surprise for people and it is worse because it is the default > >>>>> filesystem now. People can reboot into a new kernel but they may not be > >>>>> able to easily reformat their disks after mkfs at 64k. > >>>> > >>>> What's the situation on filesystems like xfs or ext4? > >>> > >>> This issue was mostly resolved for both filesystems years ago. There > >>> is a patchset in review in linux-btrfs@ mailing list that resolves > >>> this problem. I expect that it'll land in Linux 5.11 or 5.12, though Josef may > >>> know more exact details on timelines. > >> > >> Unless it's a small fix it'll be 5.12+ now given the main merge window > >> for 5.11 is closed. > > > > Then yeah, we're probably looking at 5.12, since it's ~80 patches last > > I checked. > > This will be good for the workstation installed with the latest Fedora > if it can use the volumes formatted with 4k and create them that way by > default. I suspect that's for the btrfs tools and their maintainers to decide. > If the user formats a disk such as a USB stick and tries to use it with > any other GNU/Linux system with an older kernel, such as RHEL, they may > be surprised. TBH that's no different for all sorts of filesystems and feature enhancements to them, always has been. > With the changes mentioned, will it be possible to have 4k as default > for mkfs.btrfs unless the user manually overrides it? I'm sure it's possible, as mentioned above that would be a decision for the upstream btrfs maintainers, they would be better positioned to know the impact of such a change. > As far as I know, there are no problems using ext4 on ppc64el systems > but as btrfs is now the default, some people may end up with the 64k > block size if they do an install today using the current Fedora installer. I suspect the amount of people using btrfs on ppc64le and moving those disks to other architectures are quite limited especially given it was just introduced as default in F-33, like everything storage related on any filesystem backups are always recommended. > Another hack: maybe the installer can just default to ext4 on this > architecture until 5.12 is available. Well given 5.12 will likely be the shipping kernel for F-34 you've still got a few weeks to liaise with btrfs upstream to see if everything is going to be in place (kernel/tools etc) to submit a self contained change for F-34 to ensure this is resolved to your satisfaction for that release. Peter _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-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/devel@xxxxxxxxxxxxxxxxxxxxxxx
