diff options
Diffstat (limited to 'tests/dd')
| -rwxr-xr-x | tests/dd/sparse | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/tests/dd/sparse b/tests/dd/sparse index 8f558a1b0..17aa94b8b 100755 --- a/tests/dd/sparse +++ b/tests/dd/sparse @@ -47,14 +47,24 @@ dd if=/dev/urandom of=file.in bs=1M count=1 truncate -s+1M file.in dd if=/dev/urandom of=file.in bs=1M count=1 conv=notrunc oflag=append +# Note the block allocations below are usually equal, +# but can vary by a file system block due to alignment, +# which was seen on XFS at least. +alloc_equal() { + : ${sectors_per_block:=$(expr $(stat -f -c "%S" .) / 512)} + alloc_diff=$(expr $(stat -c %b "$1") - $(stat -c %b "$2")) + alloc_diff=$(echo $alloc_diff | tr -d -- -) # abs() + test $alloc_diff -le $sectors_per_block +} + # Ensure NUL blocks smaller than the block size are not made sparse dd if=file.in of=file.out bs=2M conv=sparse test $(stat -c %s file.in) = $(stat -c %s file.out) || fail=1 -test $(stat -c %b file.in) = $(stat -c %b file.out) && fail=1 +alloc_equal file.in file.out && fail=1 # Ensure NUL blocks >= block size are made sparse dd if=file.in of=file.out bs=1M conv=sparse test $(stat -c %s file.in) = $(stat -c %s file.out) || fail=1 -test $(stat -c %b file.in) = $(stat -c %b file.out) || fail=1 +alloc_equal file.in file.out || fail=1 Exit $fail |