copy/copy-sparse-to-stream.sh

   1 #!/usr/bin/env bash
   2 # nbd client library in userspace
   3 # Copyright Red Hat
   4 #
   5 # This library is free software; you can redistribute it and/or
   6 # modify it under the terms of the GNU Lesser General Public
   7 # License as published by the Free Software Foundation; either
   8 # version 2 of the License, or (at your option) any later version.
   9 #
  10 # This library is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # Lesser General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU Lesser General Public
  16 # License along with this library; if not, write to the Free Software
  17 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  18
  19 # Stream from a sparse NBD source.  The NBD source uses a bandwidth
  20 # limiter so this will be very slow unless nbdcopy correctly handles
  21 # extents.
  22
  23 . ../tests/functions.sh
  24
  25 set -e
  26 set -x
  27
  28 requires nbdkit --version
  29 requires nbdkit --exit-with-parent --version
  30 requires nbdkit data --version
  31 requires nbdkit --version --filter=rate null
  32
  33 # Copy rate is 512Kbps.  nbdcopy should only need to copy two 32Kbyte
  34 # extents (2 * 32 * 8 = 512) so this should not take longer than a
  35 # second.  But if nbdcopy is ignoring extents it will take much, much
  36 # longer.
  37 $VG nbdcopy -- \
  38     [ nbdkit --exit-with-parent \
  39              data data=' 1  @1073741823 1 ' \
  40              --filter=rate rate=512K \
  41     ] \
  42     - >/dev/null