On Fri, Mar 15, 2024 at 10:05:16AM -0400, Phillip Susi wrote: > Dave Chinner <david@xxxxxxxxxxxxx> writes: > > > How do other filesystems behave? Is this a problem just on specific > > filesystems? > > I finally got around to testing other filesystems and surprisingly, it > seems this is only a problem for ext4. I tried btrfs, f2fs, jfs, udf, > and xfs. xfs even uses the same jbd2 for journaling that ext4 does > doesn't it? No, xfs has its own logging code. > I just formatted a clean fs, synced, and ran blktrace, then synced > again, and only ext4 emits a flush on the second sync. Heh. Maybe we should deprecate ext4 then? :) (Just kidding!) --D
