diff options
Diffstat (limited to 'tests/zfs-tests/include/libtest.shlib')
| -rw-r--r-- | tests/zfs-tests/include/libtest.shlib | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/tests/zfs-tests/include/libtest.shlib b/tests/zfs-tests/include/libtest.shlib index 8984071c8..07cf9a1e6 100644 --- a/tests/zfs-tests/include/libtest.shlib +++ b/tests/zfs-tests/include/libtest.shlib @@ -29,6 +29,7 @@ # . ${STF_TOOLS}/include/logapi.shlib +. ${STF_SUITE}/include/math.shlib # # Apply constrained path when available. This is required since the @@ -3112,6 +3113,73 @@ function get_min } # +# Generate a random number between 1 and the argument. +# +function random +{ + typeset max=$1 + echo $(( ($RANDOM % $max) + 1 )) +} + +# Write data that can be compressed into a directory +function write_compressible +{ + typeset dir=$1 + typeset megs=$2 + typeset nfiles=${3:-1} + typeset bs=${4:-1024k} + typeset fname=${5:-file} + + [[ -d $dir ]] || log_fail "No directory: $dir" + + # Under Linux fio is not currently used since its behavior can + # differ significantly across versions. This includes missing + # command line options and cases where the --buffer_compress_* + # options fail to behave as expected. + if is_linux; then + typeset file_bytes=$(to_bytes $megs) + typeset bs_bytes=4096 + typeset blocks=$(($file_bytes / $bs_bytes)) + + for (( i = 0; i < $nfiles; i++ )); do + truncate -s $file_bytes $dir/$fname.$i + + # Write every third block to get 66% compression. + for (( j = 0; j < $blocks; j += 3 )); do + dd if=/dev/urandom of=$dir/$fname.$i \ + seek=$j bs=$bs_bytes count=1 \ + conv=notrunc >/dev/null 2>&1 + done + done + else + log_must eval "fio \ + --name=job \ + --fallocate=0 \ + --minimal \ + --randrepeat=0 \ + --buffer_compress_percentage=66 \ + --buffer_compress_chunk=4096 \ + --directory=$dir \ + --numjobs=$nfiles \ + --nrfiles=$nfiles \ + --rw=write \ + --bs=$bs \ + --filesize=$megs \ + --filename_format='$fname.\$jobnum' >/dev/null" + fi +} + +function get_objnum +{ + typeset pathname=$1 + typeset objnum + + [[ -e $pathname ]] || log_fail "No such file or directory: $pathname" + objnum=$(stat -c %i $pathname) + echo $objnum +} + +# # Synchronize all the data in pool # # $1 pool name |