Signed-off-by: Alberto Garcia <be...@igalia.com> --- qapi/block-core.json | 18 ++++---- blockdev.c | 85 +++++++++++++++++++++----------------- tests/qemu-iotests/155 | 9 ++-- tests/qemu-iotests/165 | 4 +- tests/qemu-iotests/245 | 27 +++++++----- tests/qemu-iotests/248 | 2 +- tests/qemu-iotests/248.out | 2 +- tests/qemu-iotests/296 | 9 ++-- tests/qemu-iotests/298 | 4 +- 9 files changed, 91 insertions(+), 69 deletions(-)
diff --git a/qapi/block-core.json b/qapi/block-core.json index c0e7c23331..0363c901b7 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -4140,13 +4140,15 @@ ## # @x-blockdev-reopen: # -# Reopens a block device using the given set of options. Any option -# not specified will be reset to its default value regardless of its -# previous status. If an option cannot be changed or a particular +# Reopens one or more block devices using the given set of options. +# Any option not specified will be reset to its default value regardless +# of its previous status. If an option cannot be changed or a particular # driver does not support reopening then the command will return an -# error. +# error. All devices in the list are reopened in one transaction, so +# if one of them fails then the whole transaction is cancelled. # -# The top-level @node-name option (from BlockdevOptions) must be +# The command receives a list of block devices to reopen. For each one +# of them, the top-level @node-name option (from BlockdevOptions) must be # specified and is used to select the block device to be reopened. # Other @node-name options must be either omitted or set to the # current name of the appropriate node. This command won't change any @@ -4166,8 +4168,8 @@ # # 4) NULL: the current child (if any) is detached. # -# Options (1) and (2) are supported in all cases, but at the moment -# only @backing allows replacing or detaching an existing child. +# Options (1) and (2) are supported in all cases. Option (3) is +# supported for @file and @backing, and option (4) for @backing only. # # Unlike with blockdev-add, the @backing option must always be present # unless the node being reopened does not have a backing file and its @@ -4177,7 +4179,7 @@ # Since: 4.0 ## { 'command': 'x-blockdev-reopen', - 'data': 'BlockdevOptions', 'boxed': true } + 'data': { 'options': ['BlockdevOptions'] } } ## # @blockdev-del: diff --git a/blockdev.c b/blockdev.c index 098a05709d..6b688c0f73 100644 --- a/blockdev.c +++ b/blockdev.c @@ -3528,38 +3528,16 @@ fail: visit_free(v); } -void qmp_x_blockdev_reopen(BlockdevOptions *options, Error **errp) +void qmp_x_blockdev_reopen(BlockdevOptionsList *reopen_list, Error **errp) { - BlockDriverState *bs; - QObject *obj; - Visitor *v = qobject_output_visitor_new(&obj); - BlockReopenQueue *queue; - QDict *qdict; - - /* Check for the selected node name */ - if (!options->has_node_name) { - error_setg(errp, "Node name not specified"); - goto fail; - } - - bs = bdrv_find_node(options->node_name); - if (!bs) { - error_setg(errp, "Cannot find node named '%s'", options->node_name); - goto fail; - } - - /* Put all options in a QDict and flatten it */ - visit_type_BlockdevOptions(v, NULL, &options, &error_abort); - visit_complete(v, &obj); - qdict = qobject_to(QDict, obj); - - qdict_flatten(qdict); - - /* Perform the reopen operation */ + BlockReopenQueue *queue = NULL; + GSList *aio_ctxs = NULL; + GSList *visitors = NULL; + GSList *drained = NULL; BdrvNextIterator it; - GSList *aio_ctxs = NULL, *ctx; BlockDriverState *it_bs; + /* Acquire all AIO contexts */ for (it_bs = bdrv_first(&it); it_bs; it_bs = bdrv_next(&it)) { AioContext *aio_context = bdrv_get_aio_context(it_bs); @@ -3569,19 +3547,50 @@ void qmp_x_blockdev_reopen(BlockdevOptions *options, Error **errp) } } - bdrv_subtree_drained_begin(bs); - queue = bdrv_reopen_queue(NULL, bs, qdict, false); + /* Add each one of the BDS that we want to reopen to the queue */ + for (; reopen_list != NULL; reopen_list = reopen_list->next) { + BlockdevOptions *options = reopen_list->value; + QDict *qdict; + Visitor *v; + BlockDriverState *bs; + QObject *obj; + + /* Check for the selected node name */ + if (!options->has_node_name) { + error_setg(errp, "Node name not specified"); + goto fail; + } + + bs = bdrv_find_node(options->node_name); + if (!bs) { + error_setg(errp, "Cannot find node named '%s'", options->node_name); + goto fail; + } + + v = qobject_output_visitor_new(&obj); + visitors = g_slist_prepend(visitors, v); + + /* Put all options in a QDict and flatten it */ + visit_type_BlockdevOptions(v, NULL, &options, &error_abort); + visit_complete(v, &obj); + qdict = qobject_to(QDict, obj); + + qdict_flatten(qdict); + + bdrv_subtree_drained_begin(bs); + queue = bdrv_reopen_queue(queue, bs, qdict, false); + drained = g_slist_prepend(drained, bs); + } + + /* Perform the reopen operation */ bdrv_reopen_multiple(queue, errp); - bdrv_subtree_drained_end(bs); - - for (ctx = aio_ctxs; ctx != NULL; ctx = ctx->next) { - AioContext *aio_context = ctx->data; - aio_context_release(aio_context); - } - g_slist_free(aio_ctxs); + queue = NULL; fail: - visit_free(v); + bdrv_reopen_queue_free(queue); + g_slist_free_full(drained, (GDestroyNotify) bdrv_subtree_drained_end); + g_slist_free_full(aio_ctxs, (GDestroyNotify) aio_context_release); + g_slist_free_full(visitors, (GDestroyNotify) visit_free); } void qmp_blockdev_del(const char *node_name, Error **errp) diff --git a/tests/qemu-iotests/155 b/tests/qemu-iotests/155 index 988f986144..5271f9541f 100755 --- a/tests/qemu-iotests/155 +++ b/tests/qemu-iotests/155 @@ -260,9 +260,12 @@ class TestBlockdevMirrorReopen(MirrorBaseClass): result = self.vm.qmp('blockdev-add', node_name="backing", driver="null-co") self.assert_qmp(result, 'return', {}) - result = self.vm.qmp('x-blockdev-reopen', node_name="target", - driver=iotests.imgfmt, file="target-file", - backing="backing") + result = self.vm.qmp('x-blockdev-reopen', options = [{ + 'node-name': "target", + 'driver': iotests.imgfmt, + 'file': "target-file", + 'backing': "backing" + }]) self.assert_qmp(result, 'return', {}) class TestBlockdevMirrorReopenIothread(TestBlockdevMirrorReopen): diff --git a/tests/qemu-iotests/165 b/tests/qemu-iotests/165 index fb56a769b4..32db5086e1 100755 --- a/tests/qemu-iotests/165 +++ b/tests/qemu-iotests/165 @@ -136,7 +136,7 @@ class TestPersistentDirtyBitmap(iotests.QMPTestCase): assert sha256_1 == self.getSha256() # Reopen to RW - result = self.vm.qmp('x-blockdev-reopen', **{ + result = self.vm.qmp('x-blockdev-reopen', options = [{ 'node-name': 'node0', 'driver': iotests.imgfmt, 'file': { @@ -144,7 +144,7 @@ class TestPersistentDirtyBitmap(iotests.QMPTestCase): 'filename': disk }, 'read-only': False - }) + }]) self.assert_qmp(result, 'return', {}) # Check that bitmap is reopened to RW and we can write to it. diff --git a/tests/qemu-iotests/245 b/tests/qemu-iotests/245 index 1549a42e2b..53281228bc 100755 --- a/tests/qemu-iotests/245 +++ b/tests/qemu-iotests/245 @@ -84,8 +84,18 @@ class TestBlockdevReopen(iotests.QMPTestCase): "Expected output of %d qemu-io commands, found %d" % (found, self.total_io_cmds)) - # Run x-blockdev-reopen with 'opts' but applying 'newopts' - # on top of it. The original 'opts' dict is unmodified + # Run x-blockdev-reopen on a list of block devices + def reopenMultiple(self, opts, errmsg = None): + result = self.vm.qmp('x-blockdev-reopen', conv_keys = False, options = opts) + if errmsg: + self.assert_qmp(result, 'error/class', 'GenericError') + self.assert_qmp(result, 'error/desc', errmsg) + else: + self.assert_qmp(result, 'return', {}) + + # Run x-blockdev-reopen on a single block device (specified by + # 'opts') but applying 'newopts' on top of it. The original 'opts' + # dict is unmodified def reopen(self, opts, newopts = {}, errmsg = None): opts = copy.deepcopy(opts) @@ -100,12 +110,7 @@ class TestBlockdevReopen(iotests.QMPTestCase): subdict = opts[prefix] subdict[key] = value - result = self.vm.qmp('x-blockdev-reopen', conv_keys = False, **opts) - if errmsg: - self.assert_qmp(result, 'error/class', 'GenericError') - self.assert_qmp(result, 'error/desc', errmsg) - else: - self.assert_qmp(result, 'return', {}) + self.reopenMultiple([ opts ], errmsg) # Run query-named-block-nodes and return the specified entry @@ -141,10 +146,10 @@ class TestBlockdevReopen(iotests.QMPTestCase): # We cannot change any of these self.reopen(opts, {'node-name': 'not-found'}, "Cannot find node named 'not-found'") self.reopen(opts, {'node-name': ''}, "Cannot find node named ''") - self.reopen(opts, {'node-name': None}, "Invalid parameter type for 'node-name', expected: string") + self.reopen(opts, {'node-name': None}, "Invalid parameter type for 'options[0].node-name', expected: string") self.reopen(opts, {'driver': 'raw'}, "Cannot change the option 'driver'") self.reopen(opts, {'driver': ''}, "Invalid parameter ''") - self.reopen(opts, {'driver': None}, "Invalid parameter type for 'driver', expected: string") + self.reopen(opts, {'driver': None}, "Invalid parameter type for 'options[0].driver', expected: string") self.reopen(opts, {'file': 'not-found'}, "Cannot find device= nor node_name=not-found") self.reopen(opts, {'file': ''}, "Cannot find device= nor node_name=") self.reopen(opts, {'file': None}, "Invalid parameter type for 'file', expected: BlockdevRef") @@ -153,7 +158,7 @@ class TestBlockdevReopen(iotests.QMPTestCase): self.reopen(opts, {'file.filename': hd_path[1]}, "Cannot change the option 'filename'") self.reopen(opts, {'file.aio': 'native'}, "Cannot change the option 'aio'") self.reopen(opts, {'file.locking': 'off'}, "Cannot change the option 'locking'") - self.reopen(opts, {'file.filename': None}, "Invalid parameter type for 'file.filename', expected: string") + self.reopen(opts, {'file.filename': None}, "Invalid parameter type for 'options[0].file.filename', expected: string") # node-name is optional in BlockdevOptions, but x-blockdev-reopen needs it del opts['node-name'] diff --git a/tests/qemu-iotests/248 b/tests/qemu-iotests/248 index 18ba03467e..2b43853183 100755 --- a/tests/qemu-iotests/248 +++ b/tests/qemu-iotests/248 @@ -62,7 +62,7 @@ vm.get_qmp_events() del blockdev_opts['file']['size'] vm.qmp_log('x-blockdev-reopen', filters=[filter_qmp_testfiles], - **blockdev_opts) + options = [ blockdev_opts ]) vm.qmp_log('block-job-resume', device='drive0') vm.event_wait('JOB_STATUS_CHANGE', timeout=1.0, diff --git a/tests/qemu-iotests/248.out b/tests/qemu-iotests/248.out index 369b25bf26..893f625347 100644 --- a/tests/qemu-iotests/248.out +++ b/tests/qemu-iotests/248.out @@ -2,7 +2,7 @@ {"return": {}} {"execute": "blockdev-mirror", "arguments": {"device": "drive0", "on-target-error": "enospc", "sync": "full", "target": "target"}} {"return": {}} -{"execute": "x-blockdev-reopen", "arguments": {"driver": "qcow2", "file": {"driver": "raw", "file": {"driver": "file", "filename": "TEST_DIR/PID-target"}}, "node-name": "target"}} +{"execute": "x-blockdev-reopen", "arguments": {"options": [{"driver": "qcow2", "file": {"driver": "raw", "file": {"driver": "file", "filename": "TEST_DIR/PID-target"}}, "node-name": "target"}]}} {"return": {}} {"execute": "block-job-resume", "arguments": {"device": "drive0"}} {"return": {}} diff --git a/tests/qemu-iotests/296 b/tests/qemu-iotests/296 index fb7dec88aa..cfa5122d6b 100755 --- a/tests/qemu-iotests/296 +++ b/tests/qemu-iotests/296 @@ -119,8 +119,7 @@ class EncryptionSetupTestCase(iotests.QMPTestCase): command = 'x-blockdev-reopen' if reOpen else 'blockdev-add' - result = vm.qmp(command, ** - { + opts = { 'driver': iotests.imgfmt, 'node-name': id, 'read-only': readOnly, @@ -130,7 +129,11 @@ class EncryptionSetupTestCase(iotests.QMPTestCase): 'filename': test_img, } } - ) + + if reOpen: + result = vm.qmp(command, options = [ opts ]) + else: + result = vm.qmp(command, **opts) self.assert_qmp(result, 'return', {}) diff --git a/tests/qemu-iotests/298 b/tests/qemu-iotests/298 index d535946b5f..4efdb35b91 100644 --- a/tests/qemu-iotests/298 +++ b/tests/qemu-iotests/298 @@ -98,7 +98,7 @@ class TestPreallocateFilter(TestPreallocateBase): self.check_big() def test_reopen_opts(self): - result = self.vm.qmp('x-blockdev-reopen', **{ + result = self.vm.qmp('x-blockdev-reopen', options = [{ 'node-name': 'disk', 'driver': iotests.imgfmt, 'file': { @@ -112,7 +112,7 @@ class TestPreallocateFilter(TestPreallocateBase): 'filename': disk } } - }) + }]) self.assert_qmp(result, 'return', {}) self.vm.hmp_qemu_io('drive0', 'write 0 1M') -- 2.20.1