Hi! When i do xfstests with ext4 fs, one case fail as below: FSTYP -- ext4 PLATFORM -- Linux/x86_64 local 4.13.0-rc3 MKFS_OPTIONS -- /dev/sda8 MOUNT_OPTIONS -- -o acl,user_xattr /dev/sda8 /fs/scratch ext4/023 [not run] xfs_scrub not found <=== Not run: ext4/023 Passed all 0 tests It is clear that i do not have xfs_scrub cmd. I have read related docs but do not find where or how can i get it. I use v4.7 xfsprogs and xfstests commit is a00c51a0. Could you help me? Thanks Xiang