t/zbd: test write zone accounting of almost full zones

Recent commit fixed the bug of the write zone accounting for almost full
zones. Add a test case which confirms the fix.

Signed-off-by: Shin'ichiro Kawasaki <[email protected]>
Signed-off-by: Vincent Fu <[email protected]>

t/zbd/test-zbd-support

@@ -1368,6 +1368,27 @@ test63() {
 	check_reset_count -eq 3 || return $?
 }
 
+# Test write zone accounting handles almost full zones correctly. Prepare an
+# almost full, but not full zone. Write to the zone with verify using larger
+# block size. Then confirm fio does not report write zone accounting failure.
+test64() {
+	local bs cap
+
+	[ -n "$is_zbd" ] && reset_zone "$dev" -1
+
+	bs=$((zone_size / 8))
+	cap=$(total_zone_capacity 1 $((first_sequential_zone_sector*512)) $dev)
+	run_fio_on_seq "$(ioengine "psync")" --rw=write --bs="$bs" \
+		       --size=$((zone_size)) \
+		       --io_size=$((cap - bs)) \
+		       >> "${logfile}.${test_number}" 2>&1 || return $?
+
+	bs=$((zone_size / 2))
+	run_fio_on_seq "$(ioengine "psync")" --rw=write --bs="$bs" \
+		       --size=$((zone_size)) --do_verify=1 --verify=md5 \
+		       >> "${logfile}.${test_number}" 2>&1 || return $?
+}
+
 SECONDS=0
 tests=()
 dynamic_analyzer=()