Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

Block pull request

# gpg: Signature made Fri 29 Aug 2014 17:25:58 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"

* remotes/stefanha/tags/block-pull-request: (35 commits)
  quorum: Fix leak of opts in quorum_open
  blkverify: Fix leak of opts in blkverify_open
  nfs: Fix leak of opts in nfs_file_open
  curl: Don't deref NULL pointer in call to aio_poll.
  curl: Allow a cookie or cookies to be sent with http/https requests.
  virtio-blk: allow drive_del with dataplane
  block: acquire AioContext in do_drive_del()
  linux-aio: avoid deadlock in nested aio_poll() calls
  qemu-iotests: add multiwrite test cases
  block: fix overlapping multiwrite requests
  nbd: Follow the BDS' AIO context
  block: Add AIO context notifiers
  nbd: Drop nbd_can_read()
  sheepdog: fix a core dump while do auto-reconnecting
  aio-win32: add support for sockets
  qemu-coroutine-io: fix for Win32
  AioContext: introduce aio_prepare
  aio-win32: add aio_set_dispatching optimization
  test-aio: test timers on Windows too
  AioContext: export and use aio_dispatch
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

4 files changed, 235 insertions, 37 deletions

diff --git a/tests/qemu-iotests/100 b/tests/qemu-iotests/100
new file mode 100755
index 0000000000..9124aba760
--- /dev/null
+++ b/tests/qemu-iotests/100
@@ -0,0 +1,134 @@
+#!/bin/bash
+#
+# Test simple read/write using plain bdrv_read/bdrv_write
+#
+# Copyright (C) 2014 Red Hat, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+# creator
+owner=stefanha@redhat.com
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+
+_cleanup()
+{
+	_cleanup_test_img
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+_supported_fmt generic
+_supported_proto generic
+_supported_os Linux
+
+
+size=128M
+
+echo
+echo "== Single request =="
+_make_test_img $size
+$QEMU_IO -c "multiwrite 0 4k" "$TEST_IMG" | _filter_qemu_io
+
+echo
+echo "== verify pattern =="
+$QEMU_IO -c "read -P 0xcd 0 4k" "$TEST_IMG" | _filter_qemu_io
+$QEMU_IO -c "read -P 0 4k 4k" "$TEST_IMG" | _filter_qemu_io
+
+echo
+echo "== Sequential requests =="
+_make_test_img $size
+$QEMU_IO -c "multiwrite 0 4k ; 4k 4k" "$TEST_IMG" | _filter_qemu_io
+
+echo
+echo "== verify pattern =="
+$QEMU_IO -c "read -P 0xcd 0 4k" "$TEST_IMG" | _filter_qemu_io
+$QEMU_IO -c "read -P 0xce 4k 4k" "$TEST_IMG" | _filter_qemu_io
+$QEMU_IO -c "read -P 0 8k 4k" "$TEST_IMG" | _filter_qemu_io
+
+echo
+echo "== Superset overlapping requests =="
+_make_test_img $size
+$QEMU_IO -c "multiwrite 0 4k ; 1k 2k" "$TEST_IMG" | _filter_qemu_io
+
+echo
+echo "== verify pattern =="
+# Order of overlapping in-flight requests is not guaranteed so we cannot verify
+# [1k, 3k) since it could have either pattern 0xcd or 0xce.
+$QEMU_IO -c "read -P 0xcd 0 1k" "$TEST_IMG" | _filter_qemu_io
+$QEMU_IO -c "read -P 0xcd 3k 1k" "$TEST_IMG" | _filter_qemu_io
+$QEMU_IO -c "read -P 0 4k 4k" "$TEST_IMG" | _filter_qemu_io
+
+echo
+echo "== Subset overlapping requests =="
+_make_test_img $size
+$QEMU_IO -c "multiwrite 1k 2k ; 0k 4k" "$TEST_IMG" | _filter_qemu_io
+
+echo
+echo "== verify pattern =="
+# Order of overlapping in-flight requests is not guaranteed so we cannot verify
+# [1k, 3k) since it could have either pattern 0xcd or 0xce.
+$QEMU_IO -c "read -P 0xce 0 1k" "$TEST_IMG" | _filter_qemu_io
+$QEMU_IO -c "read -P 0xce 3k 1k" "$TEST_IMG" | _filter_qemu_io
+$QEMU_IO -c "read -P 0 4k 4k" "$TEST_IMG" | _filter_qemu_io
+
+echo
+echo "== Head overlapping requests =="
+_make_test_img $size
+$QEMU_IO -c "multiwrite 0k 2k ; 0k 4k" "$TEST_IMG" | _filter_qemu_io
+
+echo
+echo "== verify pattern =="
+# Order of overlapping in-flight requests is not guaranteed so we cannot verify
+# [0k, 2k) since it could have either pattern 0xcd or 0xce.
+$QEMU_IO -c "read -P 0xce 2k 2k" "$TEST_IMG" | _filter_qemu_io
+$QEMU_IO -c "read -P 0 4k 4k" "$TEST_IMG" | _filter_qemu_io
+
+echo
+echo "== Tail overlapping requests =="
+_make_test_img $size
+$QEMU_IO -c "multiwrite 2k 2k ; 0k 4k" "$TEST_IMG" | _filter_qemu_io
+
+echo
+echo "== verify pattern =="
+# Order of overlapping in-flight requests is not guaranteed so we cannot verify
+# [2k, 4k) since it could have either pattern 0xcd or 0xce.
+$QEMU_IO -c "read -P 0xce 0k 2k" "$TEST_IMG" | _filter_qemu_io
+$QEMU_IO -c "read -P 0 4k 4k" "$TEST_IMG" | _filter_qemu_io
+
+echo
+echo "== Disjoint requests =="
+_make_test_img $size
+$QEMU_IO -c "multiwrite 0 4k ; 64k 4k" "$TEST_IMG" | _filter_qemu_io
+
+echo
+echo "== verify pattern =="
+$QEMU_IO -c "read -P 0xcd 0 4k" "$TEST_IMG" | _filter_qemu_io
+$QEMU_IO -c "read -P 0 4k 60k" "$TEST_IMG" | _filter_qemu_io
+$QEMU_IO -c "read -P 0xce 64k 4k" "$TEST_IMG" | _filter_qemu_io
+$QEMU_IO -c "read -P 0 68k 4k" "$TEST_IMG" | _filter_qemu_io
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0
diff --git a/tests/qemu-iotests/100.out b/tests/qemu-iotests/100.out
new file mode 100644
index 0000000000..2d6e9f0a7d
--- /dev/null
+++ b/tests/qemu-iotests/100.out
@@ -0,0 +1,89 @@
+QA output created by 100
+
+== Single request ==
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 
+wrote 4096/4096 bytes at offset 0
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== verify pattern ==
+read 4096/4096 bytes at offset 0
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 4096/4096 bytes at offset 4096
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== Sequential requests ==
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 
+wrote 8192/8192 bytes at offset 0
+8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== verify pattern ==
+read 4096/4096 bytes at offset 0
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 4096/4096 bytes at offset 4096
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 4096/4096 bytes at offset 8192
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== Superset overlapping requests ==
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 
+wrote 6144/6144 bytes at offset 0
+6 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== verify pattern ==
+read 1024/1024 bytes at offset 0
+1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 1024/1024 bytes at offset 3072
+1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 4096/4096 bytes at offset 4096
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== Subset overlapping requests ==
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 
+wrote 6144/6144 bytes at offset 1024
+6 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== verify pattern ==
+read 1024/1024 bytes at offset 0
+1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 1024/1024 bytes at offset 3072
+1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 4096/4096 bytes at offset 4096
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== Head overlapping requests ==
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 
+wrote 6144/6144 bytes at offset 0
+6 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== verify pattern ==
+read 2048/2048 bytes at offset 2048
+2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 4096/4096 bytes at offset 4096
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== Tail overlapping requests ==
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 
+wrote 6144/6144 bytes at offset 2048
+6 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== verify pattern ==
+read 2048/2048 bytes at offset 0
+2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 4096/4096 bytes at offset 4096
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== Disjoint requests ==
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 
+wrote 8192/8192 bytes at offset 0
+8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== verify pattern ==
+read 4096/4096 bytes at offset 0
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 61440/61440 bytes at offset 4096
+60 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 4096/4096 bytes at offset 65536
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 4096/4096 bytes at offset 69632
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+*** done
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index 2803d68d62..0920b28db4 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -101,5 +101,6 @@
 092 rw auto quick
 095 rw auto quick
 099 rw auto quick
+100 rw auto quick
 101 rw auto quick
 103 rw auto quick
diff --git a/tests/test-aio.c b/tests/test-aio.c
index f12b6e0ae8..c6a8713e83 100644
--- a/tests/test-aio.c
+++ b/tests/test-aio.c
@@ -57,8 +57,6 @@ static void bh_test_cb(void *opaque)
     }
 }
 
-#if !defined(_WIN32)
-
 static void timer_test_cb(void *opaque)
 {
     TimerTestData *data = opaque;
@@ -68,12 +66,10 @@ static void timer_test_cb(void *opaque)
     }
 }
 
-static void dummy_io_handler_read(void *opaque)
+static void dummy_io_handler_read(EventNotifier *e)
 {
 }
 
-#endif /* !_WIN32 */
-
 static void bh_delete_cb(void *opaque)
 {
     BHTestData *data = opaque;
@@ -428,24 +424,18 @@ static void test_wait_event_notifier_noflush(void)
     event_notifier_cleanup(&data.e);
 }
 
-#if !defined(_WIN32)
-
 static void test_timer_schedule(void)
 {
     TimerTestData data = { .n = 0, .ctx = ctx, .ns = SCALE_MS * 750LL,
                            .max = 2,
                            .clock_type = QEMU_CLOCK_VIRTUAL };
-    int pipefd[2];
+    EventNotifier e;
 
     /* aio_poll will not block to wait for timers to complete unless it has
      * an fd to wait on. Fixing this breaks other tests. So create a dummy one.
      */
-    g_assert(!qemu_pipe(pipefd));
-    qemu_set_nonblock(pipefd[0]);
-    qemu_set_nonblock(pipefd[1]);
-
-    aio_set_fd_handler(ctx, pipefd[0],
-                       dummy_io_handler_read, NULL, NULL);
+    event_notifier_init(&e, false);
+    aio_set_event_notifier(ctx, &e, dummy_io_handler_read);
     aio_poll(ctx, false);
 
     aio_timer_init(ctx, &data.timer, data.clock_type,
@@ -484,15 +474,12 @@ static void test_timer_schedule(void)
     g_assert(!aio_poll(ctx, false));
     g_assert_cmpint(data.n, ==, 2);
 
-    aio_set_fd_handler(ctx, pipefd[0], NULL, NULL, NULL);
-    close(pipefd[0]);
-    close(pipefd[1]);
+    aio_set_event_notifier(ctx, &e, NULL);
+    event_notifier_cleanup(&e);
 
     timer_del(&data.timer);
 }
 
-#endif /* !_WIN32 */
-
 /* Now the same tests, using the context as a GSource.  They are
  * very similar to the ones above, with g_main_context_iteration
  * replacing aio_poll.  However:
@@ -775,25 +762,19 @@ static void test_source_wait_event_notifier_noflush(void)
     event_notifier_cleanup(&data.e);
 }
 
-#if !defined(_WIN32)
-
 static void test_source_timer_schedule(void)
 {
     TimerTestData data = { .n = 0, .ctx = ctx, .ns = SCALE_MS * 750LL,
                            .max = 2,
                            .clock_type = QEMU_CLOCK_VIRTUAL };
-    int pipefd[2];
+    EventNotifier e;
     int64_t expiry;
 
     /* aio_poll will not block to wait for timers to complete unless it has
      * an fd to wait on. Fixing this breaks other tests. So create a dummy one.
      */
-    g_assert(!qemu_pipe(pipefd));
-    qemu_set_nonblock(pipefd[0]);
-    qemu_set_nonblock(pipefd[1]);
-
-    aio_set_fd_handler(ctx, pipefd[0],
-                       dummy_io_handler_read, NULL, NULL);
+    event_notifier_init(&e, false);
+    aio_set_event_notifier(ctx, &e, dummy_io_handler_read);
     do {} while (g_main_context_iteration(NULL, false));
 
     aio_timer_init(ctx, &data.timer, data.clock_type,
@@ -818,15 +799,12 @@ static void test_source_timer_schedule(void)
     g_assert_cmpint(data.n, ==, 2);
     g_assert(qemu_clock_get_ns(data.clock_type) > expiry);
 
-    aio_set_fd_handler(ctx, pipefd[0], NULL, NULL, NULL);
-    close(pipefd[0]);
-    close(pipefd[1]);
+    aio_set_event_notifier(ctx, &e, NULL);
+    event_notifier_cleanup(&e);
 
     timer_del(&data.timer);
 }
 
-#endif /* !_WIN32 */
-
 
 /* End of tests.  */
 
@@ -857,9 +835,7 @@ int main(int argc, char **argv)
     g_test_add_func("/aio/event/wait",              test_wait_event_notifier);
     g_test_add_func("/aio/event/wait/no-flush-cb",  test_wait_event_notifier_noflush);
     g_test_add_func("/aio/event/flush",             test_flush_event_notifier);
-#if !defined(_WIN32)
     g_test_add_func("/aio/timer/schedule",          test_timer_schedule);
-#endif
 
     g_test_add_func("/aio-gsource/notify",                  test_source_notify);
     g_test_add_func("/aio-gsource/flush",                   test_source_flush);
@@ -874,8 +850,6 @@ int main(int argc, char **argv)
     g_test_add_func("/aio-gsource/event/wait",              test_source_wait_event_notifier);
     g_test_add_func("/aio-gsource/event/wait/no-flush-cb",  test_source_wait_event_notifier_noflush);
     g_test_add_func("/aio-gsource/event/flush",             test_source_flush_event_notifier);
-#if !defined(_WIN32)
     g_test_add_func("/aio-gsource/timer/schedule",          test_source_timer_schedule);
-#endif
     return g_test_run();
 }