On 6/29/20 1:31 AM, Mark Otaris wrote: > The master branch for cp now defaults to copy-on-write on filesystems > that support reflinks, which should make copies more efficient if > Fedora starts using btrfs: > https://git.savannah.gnu.org/cgit/coreutils.git/commit/?id=25725f9d41735d176d73a757430739fb71c7d043. > > Dolphin and KIO also seem like they will start doing this: > https://bugs.kde.org/show_bug.cgi?id=326880, > https://invent.kde.org/frameworks/kio/commit/c2faaae697f11ee600989b67b4406981838ae628. > > Beyond these recent changes, there are many other reasons to use > btrfs, such as that Podman has a btrfs driver that might make > containers more efficient, that ostree makes limited use of reflinks > when they are available, that many filesystem options can be changed > and new features and better defaults used even after the filesystem > was initially created, that resize operations can be done online, and > that there are uniform checksums on all metadata blocks, giving > guarantees against corruption. > > XFS also has reflinks, but lacks many features of btrfs, and switching > from ext4 to XFS would mean losing cgroup writeback. That's incorrect: commit adfb5fb46af059387eca0fce1d8cd8733f9ee3a0 Author: Christoph Hellwig <hch@xxxxxx> Date: Fri Jun 28 19:30:22 2019 -0700 xfs: implement cgroup aware writeback Link every newly allocated writeback bio to cgroup pointed to by the writeback control structure, and charge every byte written back to it. Tested-by: Stefan Priebe - Profihost AG <s.priebe@xxxxxxxxxxxx> Signed-off-by: Christoph Hellwig <hch@xxxxxx> Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx> -Eric _______________________________________________ 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
