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From bc3e5687b0f29cae1b5770aee8f4625b348deea1 Mon Sep 17 00:00:00 2001
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From: Max Reitz <mreitz@redhat.com>
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Date: Mon, 4 Feb 2019 20:42:07 +0100
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Subject: [PATCH 07/33] iotests: Test file-posix locking and reopen
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RH-Author: Max Reitz <mreitz@redhat.com>
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Message-id: <20190204204207.18079-8-mreitz@redhat.com>
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Patchwork-id: 84226
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O-Subject: [RHEL-7.7 qemu-kvm-rhev PATCH 7/7] iotests: Test file-posix locking and reopen
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Bugzilla: 1551486
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RH-Acked-by: John Snow <jsnow@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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Reviewed-by: Alberto Garcia <berto@igalia.com>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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(cherry picked from commit 6d0a4a0fb5c8f10c8eb68b52cfda0082b00ae963)
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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tests/qemu-iotests/182 | 71 ++++++++++++++++++++++++++++++++++++++++++++++
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tests/qemu-iotests/182.out | 9 ++++++
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2 files changed, 80 insertions(+)
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diff --git a/tests/qemu-iotests/182 b/tests/qemu-iotests/182
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index 4b31592..3b7689c 100755
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--- a/tests/qemu-iotests/182
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+++ b/tests/qemu-iotests/182
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@@ -31,6 +31,7 @@ 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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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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@@ -71,6 +72,76 @@ echo 'quit' | $QEMU -nographic -monitor stdio \
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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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+
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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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+
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+_launch_qemu
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+
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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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+
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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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+
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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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+
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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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+
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+# Now we attach the image to a virtio-blk device. This device does
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+# require 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': 'device_add',
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+ 'arguments': {
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+ 'driver': 'virtio-blk',
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+ 'drive': 'node1'
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+ } }" \
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+ 'return' \
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+ 'error'
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+
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+_cleanup_qemu
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+
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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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diff --git a/tests/qemu-iotests/182.out b/tests/qemu-iotests/182.out
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index f1463c8..af501ca 100644
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--- a/tests/qemu-iotests/182.out
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+++ b/tests/qemu-iotests/182.out
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@@ -5,4 +5,13 @@ Starting QEMU
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Starting a second QEMU using the same image should fail
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QEMU_PROG: -drive file=TEST_DIR/t.qcow2,if=none,id=drive0,file.locking=on: Failed to get "write" lock
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Is another process using the image [TEST_DIR/t.qcow2]?
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+
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+=== Testing reopen ===
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+
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+{"return": {}}
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+{"return": {}}
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+Formatting 'TEST_DIR/t.qcow2.overlay', fmt=qcow2 size=197120 backing_file=TEST_DIR/t.qcow2 backing_fmt=file cluster_size=65536 lazy_refcounts=off refcount_bits=16
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+{"return": {}}
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+{"return": {}}
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+{"return": {}}
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*** done
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--
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1.8.3.1
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