t/zbd: avoid test case 31 failure with small devices
The test case assumed that the test target devices have 128 or more
sequential write required zones and uses 128 as the minimum number of
zones to write. This caused failure when the devices had a smaller
number of sequential write required zones. To avoid the failure, count
the actual number of sequential write required zones and use it if it is
smaller than 128.
Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Link: https://lore.kernel.org/r/20240430103022.4136039-4-shinichiro.kawasaki@wdc.com
Signed-off-by: Vincent Fu <vincent.fu@samsung.com>
diff --git a/t/zbd/test-zbd-support b/t/zbd/test-zbd-support
index ef98835..e0b2a75 100755
--- a/t/zbd/test-zbd-support
+++ b/t/zbd/test-zbd-support
@@ -852,12 +852,15 @@
# To distribute the write target zones evenly, skip certain zones for every
# write. Utilize zonemode strided for such write patterns.
bs=$((128 * 1024))
+ off=$((first_sequential_zone_sector * 512))
+ size=$((disk_size - off))
nz=$((max_open_zones))
if [[ $nz -eq 0 ]]; then
nz=128
fi
- off=$((first_sequential_zone_sector * 512))
- size=$((disk_size - off))
+ if ((size / zone_size < nz)); then
+ nz=$((size / zone_size))
+ fi
inc=$(((size / nz / zone_size) * zone_size))
opts=("--name=$dev" "--filename=$dev" "--rw=write" "--bs=${bs}")
opts+=("--offset=$off" "--size=$((inc * nz))" "--io_size=$((bs * nz))")
