https://bugzilla.kernel.org/show_bug.cgi?id=206419 --- Comment #1 from bugzilla.kernel.org@xxxxxxxx --- I was able to umount the filesystem and ran e2fsck, which offered: Inode 34852 extent tree (at level 2) could be narrower. Optimize<y>? yes And then went on to correct bitmpa differences - no sign of the bitmap block checksum error. Afterwards, I mounted again and now fstrim works without complaints. -- You are receiving this mail because: You are watching the assignee of the bug.