_scratch_mkfs >/dev/null 2>&1
_scratch_mount
-xfs_io -F -f -t -c "pwrite -S 0x63 0 512" \
+$XFS_IO_PROG -f -t -c "pwrite -S 0x63 0 512" \
-c "pwrite -S 0x64 512 512" \
-c "pwrite -S 0x65 1024 512" \
-c "pwrite -S 0x66 1536 512" \
-c "pread -v 3584 512" \
$SCRATCH_MNT/aligned_vector_rw | _filter_xfs_io_unique
-xfs_io -F -f -c "pwrite -S 0x63 4096 1024" \
+$XFS_IO_PROG -f -c "pwrite -S 0x63 4096 1024" \
-c "pwrite -S 0x6B 5120 1024" \
-c "pwrite -S 0x6C 6144 1024" \
-c "pwrite -S 0x6D 7168 1024" \
-c "pread -v 7168 1024" \
$SCRATCH_MNT/aligned_vector_rw | _filter_xfs_io_unique
-xfs_io -F -f -c "pwrite -S 0x6E 8192 2048" \
+$XFS_IO_PROG -f -c "pwrite -S 0x6E 8192 2048" \
-c "pwrite -S 0x6F 10240 2048" \
-c "pread -v 0 2048" \
-c "pread -v 2048 2048" \
-c "pread -v 10240 2048" \
$SCRATCH_MNT/aligned_vector_rw | _filter_xfs_io_unique
-xfs_io -F -f -c "pwrite -S 0x70 12288 4096" \
+$XFS_IO_PROG -f -c "pwrite -S 0x70 12288 4096" \
-c "pread -v 0 4096" \
-c "pread -v 4096 4096" \
-c "pread -v 8192 4096" \
-c "pread -v 12288 4096" \
$SCRATCH_MNT/aligned_vector_rw | _filter_xfs_io_unique
-xfs_io -F -f -c "pwrite -S 0x71 16384 8192" \
+$XFS_IO_PROG -f -c "pwrite -S 0x71 16384 8192" \
-c "pwrite -S 0x72 24576 8192" \
-c "pread -v 0 8192" \
-c "pread -v 8192 8192" \
-c "pread -v 16384 8192" \
$SCRATCH_MNT/aligned_vector_rw | _filter_xfs_io_unique
-xfs_io -F -f -c "pwrite -S 0x73 32768 16384" \
+$XFS_IO_PROG -f -c "pwrite -S 0x73 32768 16384" \
-c "pwrite -S 0x74 49152 16384" \
-c "pread -v 0 16384" \
-c "pread -v 16384 16384" \
-c "pread -v 49152 16384" \
$SCRATCH_MNT/aligned_vector_rw | _filter_xfs_io_unique
-xfs_io -F -f -c "pwrite -S 0x75 65536 32768" \
+$XFS_IO_PROG -f -c "pwrite -S 0x75 65536 32768" \
-c "pwrite -S 0x76 98304 32768" \
-c "pread -v 0 32768" \
-c "pread -v 32768 32768" \
-c "pread -v 98304 32768" \
$SCRATCH_MNT/aligned_vector_rw | _filter_xfs_io_unique
-xfs_io -F -f -c "pwrite -S 0x76 131072 65536" \
+$XFS_IO_PROG -f -c "pwrite -S 0x76 131072 65536" \
-c "pwrite -S 0x77 196608 65536" \
-c "pread -v 0 65536" \
-c "pread -v 65536 65536" \
-c "pread -v 196608 65536" \
$SCRATCH_MNT/aligned_vector_rw | _filter_xfs_io_unique
-xfs_io -F -f -c "pwrite -S 0x76 262144 131072" \
+$XFS_IO_PROG -f -c "pwrite -S 0x76 262144 131072" \
-c "pwrite -S 0x77 393216 131072" \
-c "pread -v 0 131072" \
-c "pread -v 131072 131072" \
-c "pread -v 393216 131072" \
$SCRATCH_MNT/aligned_vector_rw | _filter_xfs_io_unique
-xfs_io -F -f -c "pwrite -S 0x76 524288 524288" \
+$XFS_IO_PROG -f -c "pwrite -S 0x76 524288 524288" \
-c "pwrite -S 0x77 1048576 524288" \
-c "pread -v 0 524288" \
-c "pread -v 524288 524288" \
-c "pread -v 1048576 524288" \
$SCRATCH_MNT/aligned_vector_rw | _filter_xfs_io_unique
-xfs_io -F -f -c "pwrite -S 0x32 1048576 1048576" \
+$XFS_IO_PROG -f -c "pwrite -S 0x32 1048576 1048576" \
-c "pwrite -S 0x33 2097152 1048576" \
-c "pwrite -S 0x34 3145728 1048576" \
-c "pwrite -S 0x35 4194304 1048576" \
-c "pread -v 8388608 1048576" \
$SCRATCH_MNT/aligned_vector_rw | _filter_xfs_io_unique
-xfs_io -F -f -c "pwrite -S 0x32 1048576 1048576" \
+$XFS_IO_PROG -f -c "pwrite -S 0x32 1048576 1048576" \
-c "pwrite -S 0x33 2097152 1048576" \
-c "pwrite -S 0x34 3145728 1048576" \
-c "pwrite -S 0x35 4194304 1048576" \
-c "pread -v 9437184 1048576" \
$SCRATCH_MNT/aligned_vector_rw | _filter_xfs_io_unique
-xfs_io -F -f -c "pwrite -S 0x92 10485760 10485760" \
+$XFS_IO_PROG -f -c "pwrite -S 0x92 10485760 10485760" \
-c "pwrite -S 0x93 20971520 10485760" \
-c "pwrite -S 0x94 31457280 10485760" \
-c "pwrite -S 0x95 41943040 10485760" \