diff --git a/tests/generic/455 b/tests/generic/455
index 5b4b242e74..6dc46c3c72 100755
--- a/tests/generic/455
+++ b/tests/generic/455
@@ -35,6 +35,17 @@ _require_dm_target thin-pool
 
 rm -f $seqres.full
 
+_reset_dmthin()
+{
+    # With bcachefs, we need to wipe and start fresh every time we replay to a
+    # different point in time - if we see metadata from a future point in time,
+    # or an unrelated mount, bcachefs will get confused:
+    if [ "$FSTYP" = "bcachefs" ]; then
+	_dmthin_cleanup
+	_dmthin_init $devsize $devsize $csize $lowspace
+    fi
+}
+
 check_files()
 {
 	local name=$1
@@ -44,6 +55,7 @@ check_files()
 		local filename=$(basename $i)
 		local mark="${filename##*.}"
 		echo "checking $filename" >> $seqres.full
+		_reset_dmthin
 		_log_writes_replay_log $filename $DMTHIN_VOL_DEV
 		_dmthin_mount
 		local expected_md5=$(_md5_checksum $i)
@@ -101,6 +113,7 @@ _dmthin_check_fs
 
 # check pre umount
 echo "checking pre umount" >> $seqres.full
+_reset_dmthin
 _log_writes_replay_log last $DMTHIN_VOL_DEV
 _dmthin_mount
 _dmthin_check_fs
@@ -111,6 +124,7 @@ done
 
 # Check the end
 echo "checking post umount" >> $seqres.full
+_reset_dmthin
 _log_writes_replay_log end $DMTHIN_VOL_DEV
 _dmthin_mount
 for j in `seq 0 $((NUM_FILES-1))`; do
diff --git a/tests/generic/457 b/tests/generic/457
index ddbd90cf0c..f17d4e4430 100755
--- a/tests/generic/457
+++ b/tests/generic/457
@@ -37,6 +37,17 @@ _require_dm_target thin-pool
 
 rm -f $seqres.full
 
+_reset_dmthin()
+{
+    # With bcachefs, we need to wipe and start fresh every time we replay to a
+    # different point in time - if we see metadata from a future point in time,
+    # or an unrelated mount, bcachefs will get confused:
+    if [ "$FSTYP" = "bcachefs" ]; then
+	_dmthin_cleanup
+	_dmthin_init $devsize $devsize $csize $lowspace
+    fi
+}
+
 check_files()
 {
 	local name=$1
@@ -46,6 +57,7 @@ check_files()
 		local filename=$(basename $i)
 		local mark="${filename##*.}"
 		echo "checking $filename" >> $seqres.full
+		_reset_dmthin
 		_log_writes_replay_log $filename $DMTHIN_VOL_DEV
 		_dmthin_mount
 		local expected_md5=$(_md5_checksum $i)
@@ -105,6 +117,7 @@ _dmthin_check_fs
 
 # check pre umount
 echo "checking pre umount" >> $seqres.full
+_reset_dmthin
 _log_writes_replay_log last $DMTHIN_VOL_DEV
 _dmthin_mount
 _dmthin_check_fs
@@ -115,6 +128,7 @@ done
 
 # Check the end
 echo "checking post umount" >> $seqres.full
+_reset_dmthin
 _log_writes_replay_log end $DMTHIN_VOL_DEV
 _dmthin_mount
 for j in `seq 0 $((NUM_FILES-1))`; do
diff --git a/tests/generic/482 b/tests/generic/482
index 86941e8468..3cbe187f2e 100755
--- a/tests/generic/482
+++ b/tests/generic/482
@@ -77,16 +77,29 @@ prev=$(_log_writes_mark_to_entry_number mkfs)
 cur=$(_log_writes_find_next_fua $prev)
 [ -z "$cur" ] && _fail "failed to locate next FUA write"
 
+if [ "$FSTYP" = "bcachefs" ]; then
+    _dmthin_cleanup
+    _dmthin_init $devsize $devsize $csize $lowspace
+fi
+
 while [ ! -z "$cur" ]; do
 	_log_writes_replay_log_range $cur $DMTHIN_VOL_DEV >> $seqres.full
 
-	# Here we need extra mount to replay the log, mainly for journal based
-	# fs, as their fsck will report dirty log as error.
-	# We don't care to preserve any data on the replay dev, as we can replay
-	# back to the point we need, and in fact sometimes creating/deleting
-	# snapshots repeatedly can be slower than replaying the log.
-	_dmthin_mount
-	_dmthin_check_fs
+	if [ "$FSTYP" = "bcachefs" ]; then
+	    # bcachefs will get confused if fsck does writes to replay the log,
+	    # but then we replay writes from an earlier point in time on the
+	    # same fs - but  fsck in -n mode won't do any writes:
+	    _check_scratch_fs -n $DMTHIN_VOL_DEV
+	else
+	    # Here we need extra mount to replay the log, mainly for journal based
+	    # fs, as their fsck will report dirty log as error.
+	    # We don't care to preserve any data on the replay dev, as we can replay
+	    # back to the point we need, and in fact sometimes creating/deleting
+	    # snapshots repeatedly can be slower than replaying the log.
+
+	    _dmthin_mount
+	    _dmthin_check_fs
+	fi
 
 	prev=$cur
 	cur=$(_log_writes_find_next_fua $(($cur + 1)))
