Fix verity test.

(Writing just one byte from urandom means, that there is still
high probability the byte will be the same and it will cause
no data corruption :-)

diff --git a/tests/verity-compat-test b/tests/verity-compat-test
index 55a7df4..ddb7398 100755 (executable)
--- a/tests/verity-compat-test
+++ b/tests/verity-compat-test
@@ -111,14 +111,14 @@ function check_root_hash() # $1 size, $2 hash, $3 salt, $4 version, $5 hash, [$6
 
        case $fail in
        data)
-               dd if=/dev/urandom of=$LOOPDEV1 bs=1 seek=3456 count=1 2>/dev/null
+               dd if=/dev/urandom of=$LOOPDEV1 bs=1 seek=3456 count=8 2>/dev/null
                TXT="data_dev"
                ;;
        hash)
                if [ -z "$LOOPDEV2" ] ; then
-                       dd if=/dev/urandom of=$LOOPDEV1 bs=1 seek=$((8193 + $4)) count=1 2>/dev/null
+                       dd if=/dev/urandom of=$LOOPDEV1 bs=1 seek=$((8193 + $4)) count=8 2>/dev/null
                else
-                       dd if=/dev/urandom of=$LOOPDEV2 bs=1 seek=8193 count=1 2>/dev/null
+                       dd if=/dev/urandom of=$LOOPDEV2 bs=1 seek=8193 count=8 2>/dev/null
                fi
                 TXT="hash_dev"
                ;;