diff options
authorShin'ichiro Kawasaki <>2019-08-09 12:28:36 +0900
committerJens Axboe <>2019-08-08 21:36:32 -0600
commit937ec971236d98089b63217635294c788ea00bce (patch)
parentc1f6f32ea74316df1e8707eba4fb95ab14fae6f7 (diff)
t/zbd: Fix I/O bytes rounding errors
When fio reports write bytes or read bytes, it rounds the number with units MiB or KiB to fit the number within limited number of digits. This results in rounding errors of the reported bytes and sometimes causes test failures for test case #17 in test-zbd-support which reports incorrect total I/O bytes in case both of write bytes and read bytes are rounded up. To avoid the rounding error, increase the number of digits from default value 4 to 10 to keep precision. For example, a number "256MiB" will be reported as "267911168B" with this change. Signed-off-by: Shin'ichiro Kawasaki <> Signed-off-by: Jens Axboe <>
1 files changed, 2 insertions, 1 deletions
diff --git a/t/zbd/test-zbd-support b/t/zbd/test-zbd-support
index 10c78e9a..6fb48ef0 100755
--- a/t/zbd/test-zbd-support
+++ b/t/zbd/test-zbd-support
@@ -85,7 +85,8 @@ run_fio() {
fio=$(dirname "$0")/../../fio
- opts=("--aux-path=/tmp" "--allow_file_create=0" "$@")
+ opts=("--aux-path=/tmp" "--allow_file_create=0" \
+ "--significant_figures=10" "$@")
{ echo; echo "fio ${opts[*]}"; echo; } >>"${logfile}.${test_number}"
"${dynamic_analyzer[@]}" "$fio" "${opts[@]}"