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Merge pull request #146 from versity/auke/truncatedd

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Ensure dd creates the full 8K input test file.
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Zach Brown
2023-10-24 10:10:11 -07:00
committed by GitHub
parent bdecee5e5d 707e1b2d59
commit 5ff372561d
1 changed files with 6 additions and 1 deletions
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tests/tests/basic-truncate.sh
+6 -1
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@@ -11,8 +11,13 @@ FILE="$T_D0/file"
# final block as we truncated past it. # final block as we truncated past it.
# #
echo "== truncate writes zeroed partial end of file block" echo "== truncate writes zeroed partial end of file block"
yes | dd of="$FILE" bs=8K count=1 status=none yes | dd of="$FILE" bs=8K count=1 status=none iflag=fullblock
sync sync
# not passing iflag=fullblock causes the file occasionally to just be
# 4K, so just to be safe we should at least check size once
test `stat --printf="%s\n" "$FILE"` -eq 8192 || t_fail "test file incorrect start size"
truncate -s 6K "$FILE" truncate -s 6K "$FILE"
truncate -s 12K "$FILE" truncate -s 12K "$FILE"
echo 3 > /proc/sys/vm/drop_caches echo 3 > /proc/sys/vm/drop_caches