748f831b2a
Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-id: 20191017133155.5327-12-mreitz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
180 lines
4.6 KiB
Bash
Executable File
180 lines
4.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# Test image locking for POSIX locks
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#
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# Copyright 2017 Red Hat, Inc.
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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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# creator
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owner=famz@redhat.com
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seq="$(basename $0)"
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echo "QA output created by $seq"
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tmp=/tmp/$$
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status=1 # failure is the default!
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_cleanup()
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{
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_cleanup_test_img
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rm -f "$TEST_IMG.overlay"
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rm -f "$SOCK_DIR/nbd.socket"
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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. ./common.qemu
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_supported_fmt qcow2
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_supported_proto file
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size=32M
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case "$QEMU_DEFAULT_MACHINE" in
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s390-ccw-virtio)
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virtioblk=virtio-blk-ccw
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;;
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*)
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virtioblk=virtio-blk-pci
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;;
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esac
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_make_test_img $size
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echo "Starting QEMU"
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_launch_qemu -drive file=$TEST_IMG,if=none,id=drive0,file.locking=on \
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-device $virtioblk,drive=drive0
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echo
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echo "Starting a second QEMU using the same image should fail"
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echo 'quit' | $QEMU -nographic -monitor stdio \
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-drive file=$TEST_IMG,if=none,id=drive0,file.locking=on \
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-device $virtioblk,drive=drive0 2>&1 | _filter_testdir 2>&1 |
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_filter_qemu |
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sed -e '/falling back to POSIX file/d' \
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-e '/locks can be lost unexpectedly/d'
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_cleanup_qemu
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echo
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echo '=== Testing reopen ==='
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echo
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# This tests that reopening does not unshare any permissions it should
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# not unshare
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# (There was a bug where reopening shared exactly the opposite of the
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# permissions it was supposed to share)
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_launch_qemu
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_send_qemu_cmd $QEMU_HANDLE \
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"{'execute': 'qmp_capabilities'}" \
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'return'
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# Open the image without any format layer (we are not going to access
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# it, so that is fine)
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# This should keep all permissions shared.
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success_or_failure=y _send_qemu_cmd $QEMU_HANDLE \
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"{'execute': 'blockdev-add',
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'arguments': {
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'node-name': 'node0',
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'driver': 'file',
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'filename': '$TEST_IMG',
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'locking': 'on'
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} }" \
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'return' \
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'error'
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# This snapshot will perform a reopen to drop R/W to RO.
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# It should still keep all permissions shared.
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success_or_failure=y _send_qemu_cmd $QEMU_HANDLE \
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"{'execute': 'blockdev-snapshot-sync',
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'arguments': {
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'node-name': 'node0',
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'snapshot-file': '$TEST_IMG.overlay',
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'snapshot-node-name': 'node1'
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} }" \
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'return' \
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'error'
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# Now open the same file again
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# This does not require any permissions (and does not unshare any), so
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# this will not conflict with node0.
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success_or_failure=y _send_qemu_cmd $QEMU_HANDLE \
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"{'execute': 'blockdev-add',
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'arguments': {
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'node-name': 'node1',
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'driver': 'file',
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'filename': '$TEST_IMG',
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'locking': 'on'
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} }" \
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'return' \
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'error'
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# Start an NBD server to which we can attach node1
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success_or_failure=y _send_qemu_cmd $QEMU_HANDLE \
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"{'execute': 'nbd-server-start',
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'arguments': {
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'addr': {
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'type': 'unix',
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'data': {
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'path': '$SOCK_DIR/nbd.socket'
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} } } }" \
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'return' \
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'error'
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# Now we attach the image to the NBD server. This server does require
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# some permissions (at least WRITE and READ_CONSISTENT), so if
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# reopening node0 unshared any (which it should not have), this will
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# fail (but it should not).
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success_or_failure=y _send_qemu_cmd $QEMU_HANDLE \
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"{'execute': 'nbd-server-add',
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'arguments': {
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'device': 'node1'
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} }" \
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'return' \
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'error'
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_cleanup_qemu
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echo
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echo '=== Testing failure to loosen restrictions ==='
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echo
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_launch_qemu -drive file=$TEST_IMG,if=none,file.locking=on
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_send_qemu_cmd $QEMU_HANDLE \
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"{'execute': 'qmp_capabilities'}" \
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'return'
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_cleanup_test_img
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# When quitting qemu, it will try to drop its locks on the test image.
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# Because that file no longer exists, it will be unable to do so.
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# However, that is not fatal, so it should just move on.
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_send_qemu_cmd $QEMU_HANDLE \
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"{'execute': 'quit'}" \
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'return'
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wait=1 _cleanup_qemu
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# success, all done
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echo "*** done"
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rm -f $seq.full
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status=0
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