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 <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Vincent Fu <[email protected]>
axboe · Apr 30, 2024 · 3ed8eea · 3ed8eea
1 parent 06eb4c1
commit 3ed8eea
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/t/zbd/test-zbd-support b/t/zbd/test-zbd-support
@@ -852,12 +852,15 @@ test31() {
     # 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))")