tests/cp/sparse-perf.sh

   1 #!/bin/sh
   2 # ensure that a sparse file is copied efficiently, by default
   3
   4 # Copyright (C) 2011-2021 Free Software Foundation, Inc.
   5
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  18
  19 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ cp
  21
  22 touch sparse_chk
  23 seek_data_capable_ sparse_chk ||
  24   skip_ "this file system lacks SEEK_DATA support"
  25
  26 # Create a large-but-sparse file.
  27 timeout 10 truncate -s1T f ||
  28   skip_ "unable to create a 1 TiB sparse file"
  29
  30 # Nothing can read (much less write) that many bytes in so little time.
  31 timeout 10 cp --reflink=never f f2
  32 ret=$?
  33 if test $ret -eq 124; then  # timeout
  34   # Only fail if we allocated more data
  35   # as we've seen SEEK_DATA taking 35s on some freebsd VMs
  36   test $(stat -c%b f2) -gt $(stat -c%b f) && fail=1 ||
  37     skip_ "SEEK_DATA timed out"
  38 elif test $ret -ne 0; then
  39   fail=1
  40 fi
  41
  42 # Ensure that the sparse file copied through SEEK_DATA has the same size
  43 # in bytes as the original.
  44 test "$(stat --printf %s f)" = "$(stat --printf %s f2)" || fail=1
  45
  46 Exit $fail