72 lines
2.3 KiB
Python
Executable File
72 lines
2.3 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# Test nbd reconnect on open
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#
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# Copyright (c) 2020 Virtuozzo International GmbH
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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import time
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import iotests
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from iotests import qemu_img_create, file_path, qemu_io_popen, qemu_nbd, \
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qemu_io_log, log
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iotests.script_initialize(supported_fmts=['qcow2'])
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disk, nbd_sock = file_path('disk', 'nbd-sock')
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def create_args(open_timeout):
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return ['--image-opts', '-c', 'read 0 1M',
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f'driver=nbd,open-timeout={open_timeout},'
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f'server.type=unix,server.path={nbd_sock}']
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def check_fail_to_connect(open_timeout):
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log(f'Check fail to connect with {open_timeout} seconds of timeout')
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start_t = time.time()
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qemu_io_log(*create_args(open_timeout), check=False)
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delta_t = time.time() - start_t
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max_delta = open_timeout + 0.2
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if open_timeout <= delta_t <= max_delta:
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log(f'qemu_io finished in {open_timeout}..{max_delta} seconds, OK')
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else:
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note = 'too early' if delta_t < open_timeout else 'too long'
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log(f'qemu_io finished in {delta_t:.1f} seconds, {note}')
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qemu_img_create('-f', iotests.imgfmt, disk, '1M')
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# Start NBD client when NBD server is not yet running. It should not fail, but
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# wait for 5 seconds for the server to be available.
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client = qemu_io_popen(*create_args(5))
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time.sleep(1)
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qemu_nbd('-k', nbd_sock, '-f', iotests.imgfmt, disk)
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# client should succeed
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log(client.communicate()[0], filters=[iotests.filter_qemu_io])
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# Server was started without --persistent flag, so it should be off now. Let's
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# check it and at the same time check that with open-timeout=0 client fails
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# immediately.
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check_fail_to_connect(0)
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# Check that we will fail after non-zero timeout if server is still unavailable
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check_fail_to_connect(1)
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