Merge remote-tracking branch 'remotes/ericb/tags/pull-nbd-2019-02-11' into staging

nbd patches for 2019-02-11

- Add qcow2 bitmap details to 'qemu-img info'

# gpg: Signature made Mon 11 Feb 2019 20:38:32 GMT
# gpg:                using RSA key A7A16B4A2527436A
# gpg: Good signature from "Eric Blake <eblake@redhat.com>" [full]
# gpg:                 aka "Eric Blake (Free Software Programmer) <ebb9@byu.net>" [full]
# gpg:                 aka "[jpeg image of size 6874]" [full]
# Primary key fingerprint: 71C2 CC22 B1C4 6029 27D2  F3AA A7A1 6B4A 2527 436A

* remotes/ericb/tags/pull-nbd-2019-02-11:
  qcow2: list of bitmaps new test 242
  qcow2: Add list of bitmaps to ImageInfoSpecificQCow2
  bdrv_query_image_info Error parameter added
  nbd/server: Kill pointless shadowed variable

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

15 files changed, 431 insertions, 18 deletions

diff --git a/block.c b/block.c
index b67d9b7b65..4ad0e90d7e 100644
--- a/block.c
+++ b/block.c
@@ -4462,11 +4462,12 @@ int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
     return drv->bdrv_get_info(bs, bdi);
 }
 
-ImageInfoSpecific *bdrv_get_specific_info(BlockDriverState *bs)
+ImageInfoSpecific *bdrv_get_specific_info(BlockDriverState *bs,
+                                          Error **errp)
 {
     BlockDriver *drv = bs->drv;
     if (drv && drv->bdrv_get_specific_info) {
-        return drv->bdrv_get_specific_info(bs);
+        return drv->bdrv_get_specific_info(bs, errp);
     }
     return NULL;
 }
diff --git a/block/crypto.c b/block/crypto.c
index f0a5f6b987..d5b1da66a1 100644
--- a/block/crypto.c
+++ b/block/crypto.c
@@ -594,20 +594,17 @@ static int block_crypto_get_info_luks(BlockDriverState *bs,
 }
 
 static ImageInfoSpecific *
-block_crypto_get_specific_info_luks(BlockDriverState *bs)
+block_crypto_get_specific_info_luks(BlockDriverState *bs, Error **errp)
 {
     BlockCrypto *crypto = bs->opaque;
     ImageInfoSpecific *spec_info;
     QCryptoBlockInfo *info;
 
-    info = qcrypto_block_get_info(crypto->block, NULL);
+    info = qcrypto_block_get_info(crypto->block, errp);
     if (!info) {
         return NULL;
     }
-    if (info->format != Q_CRYPTO_BLOCK_FORMAT_LUKS) {
-        qapi_free_QCryptoBlockInfo(info);
-        return NULL;
-    }
+    assert(info->format == Q_CRYPTO_BLOCK_FORMAT_LUKS);
 
     spec_info = g_new(ImageInfoSpecific, 1);
     spec_info->type = IMAGE_INFO_SPECIFIC_KIND_LUKS;
diff --git a/block/qapi.c b/block/qapi.c
index c66f949db8..00291f9105 100644
--- a/block/qapi.c
+++ b/block/qapi.c
@@ -282,7 +282,12 @@ void bdrv_query_image_info(BlockDriverState *bs,
         info->dirty_flag = bdi.is_dirty;
         info->has_dirty_flag = true;
     }
-    info->format_specific     = bdrv_get_specific_info(bs);
+    info->format_specific = bdrv_get_specific_info(bs, &err);
+    if (err) {
+        error_propagate(errp, err);
+        qapi_free_ImageInfo(info);
+        goto out;
+    }
     info->has_format_specific = info->format_specific != NULL;
 
     backing_filename = bs->backing_file;
diff --git a/block/qcow2-bitmap.c b/block/qcow2-bitmap.c
index b946301429..3ee524da4b 100644
--- a/block/qcow2-bitmap.c
+++ b/block/qcow2-bitmap.c
@@ -1006,6 +1006,82 @@ fail:
     return false;
 }
 
+
+static Qcow2BitmapInfoFlagsList *get_bitmap_info_flags(uint32_t flags)
+{
+    Qcow2BitmapInfoFlagsList *list = NULL;
+    Qcow2BitmapInfoFlagsList **plist = &list;
+    int i;
+
+    static const struct {
+        int bme;  /* Bitmap directory entry flags */
+        int info; /* The flags to report to the user */
+    } map[] = {
+        { BME_FLAG_IN_USE, QCOW2_BITMAP_INFO_FLAGS_IN_USE },
+        { BME_FLAG_AUTO,   QCOW2_BITMAP_INFO_FLAGS_AUTO },
+    };
+
+    int map_size = ARRAY_SIZE(map);
+
+    for (i = 0; i < map_size; ++i) {
+        if (flags & map[i].bme) {
+            Qcow2BitmapInfoFlagsList *entry =
+                g_new0(Qcow2BitmapInfoFlagsList, 1);
+            entry->value = map[i].info;
+            *plist = entry;
+            plist = &entry->next;
+            flags &= ~map[i].bme;
+        }
+    }
+    /* Check if the BME_* mapping above is complete */
+    assert(!flags);
+
+    return list;
+}
+
+/*
+ * qcow2_get_bitmap_info_list()
+ * Returns a list of QCOW2 bitmap details.
+ * In case of no bitmaps, the function returns NULL and
+ * the @errp parameter is not set.
+ * When bitmap information can not be obtained, the function returns
+ * NULL and the @errp parameter is set.
+ */
+Qcow2BitmapInfoList *qcow2_get_bitmap_info_list(BlockDriverState *bs,
+                                                Error **errp)
+{
+    BDRVQcow2State *s = bs->opaque;
+    Qcow2BitmapList *bm_list;
+    Qcow2Bitmap *bm;
+    Qcow2BitmapInfoList *list = NULL;
+    Qcow2BitmapInfoList **plist = &list;
+
+    if (s->nb_bitmaps == 0) {
+        return NULL;
+    }
+
+    bm_list = bitmap_list_load(bs, s->bitmap_directory_offset,
+                               s->bitmap_directory_size, errp);
+    if (bm_list == NULL) {
+        return NULL;
+    }
+
+    QSIMPLEQ_FOREACH(bm, bm_list, entry) {
+        Qcow2BitmapInfo *info = g_new0(Qcow2BitmapInfo, 1);
+        Qcow2BitmapInfoList *obj = g_new0(Qcow2BitmapInfoList, 1);
+        info->granularity = 1U << bm->granularity_bits;
+        info->name = g_strdup(bm->name);
+        info->flags = get_bitmap_info_flags(bm->flags & ~BME_RESERVED_FLAGS);
+        obj->value = info;
+        *plist = obj;
+        plist = &obj->next;
+    }
+
+    bitmap_list_free(bm_list);
+
+    return list;
+}
+
 int qcow2_reopen_bitmaps_rw_hint(BlockDriverState *bs, bool *header_updated,
                                  Error **errp)
 {
diff --git a/block/qcow2.c b/block/qcow2.c
index 8c91b92865..65a54c9ac6 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -4368,20 +4368,26 @@ static int qcow2_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
     return 0;
 }
 
-static ImageInfoSpecific *qcow2_get_specific_info(BlockDriverState *bs)
+static ImageInfoSpecific *qcow2_get_specific_info(BlockDriverState *bs,
+                                                  Error **errp)
 {
     BDRVQcow2State *s = bs->opaque;
     ImageInfoSpecific *spec_info;
     QCryptoBlockInfo *encrypt_info = NULL;
+    Error *local_err = NULL;
 
     if (s->crypto != NULL) {
-        encrypt_info = qcrypto_block_get_info(s->crypto, &error_abort);
+        encrypt_info = qcrypto_block_get_info(s->crypto, &local_err);
+        if (local_err) {
+            error_propagate(errp, local_err);
+            return NULL;
+        }
     }
 
     spec_info = g_new(ImageInfoSpecific, 1);
     *spec_info = (ImageInfoSpecific){
         .type  = IMAGE_INFO_SPECIFIC_KIND_QCOW2,
-        .u.qcow2.data = g_new(ImageInfoSpecificQCow2, 1),
+        .u.qcow2.data = g_new0(ImageInfoSpecificQCow2, 1),
     };
     if (s->qcow_version == 2) {
         *spec_info->u.qcow2.data = (ImageInfoSpecificQCow2){
@@ -4389,6 +4395,13 @@ static ImageInfoSpecific *qcow2_get_specific_info(BlockDriverState *bs)
             .refcount_bits      = s->refcount_bits,
         };
     } else if (s->qcow_version == 3) {
+        Qcow2BitmapInfoList *bitmaps;
+        bitmaps = qcow2_get_bitmap_info_list(bs, &local_err);
+        if (local_err) {
+            error_propagate(errp, local_err);
+            qapi_free_ImageInfoSpecific(spec_info);
+            return NULL;
+        }
         *spec_info->u.qcow2.data = (ImageInfoSpecificQCow2){
             .compat             = g_strdup("1.1"),
             .lazy_refcounts     = s->compatible_features &
@@ -4398,6 +4411,8 @@ static ImageInfoSpecific *qcow2_get_specific_info(BlockDriverState *bs)
                                   QCOW2_INCOMPAT_CORRUPT,
             .has_corrupt        = true,
             .refcount_bits      = s->refcount_bits,
+            .has_bitmaps        = !!bitmaps,
+            .bitmaps            = bitmaps,
         };
     } else {
         /* if this assertion fails, this probably means a new version was
diff --git a/block/qcow2.h b/block/qcow2.h
index 32cce9eee2..9dd02df831 100644
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -684,6 +684,8 @@ int qcow2_check_bitmaps_refcounts(BlockDriverState *bs, BdrvCheckResult *res,
                                   void **refcount_table,
                                   int64_t *refcount_table_size);
 bool qcow2_load_dirty_bitmaps(BlockDriverState *bs, Error **errp);
+Qcow2BitmapInfoList *qcow2_get_bitmap_info_list(BlockDriverState *bs,
+                                                Error **errp);
 int qcow2_reopen_bitmaps_rw_hint(BlockDriverState *bs, bool *header_updated,
                                  Error **errp);
 int qcow2_reopen_bitmaps_rw(BlockDriverState *bs, Error **errp);
diff --git a/block/vmdk.c b/block/vmdk.c
index 682ad93aa1..096e8eb662 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -2543,7 +2543,8 @@ static int coroutine_fn vmdk_co_check(BlockDriverState *bs,
     return ret;
 }
 
-static ImageInfoSpecific *vmdk_get_specific_info(BlockDriverState *bs)
+static ImageInfoSpecific *vmdk_get_specific_info(BlockDriverState *bs,
+                                                 Error **errp)
 {
     int i;
     BDRVVmdkState *s = bs->opaque;
diff --git a/include/block/block.h b/include/block/block.h
index 57233cf2c0..73357c6c25 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -478,7 +478,8 @@ const char *bdrv_get_device_name(const BlockDriverState *bs);
 const char *bdrv_get_device_or_node_name(const BlockDriverState *bs);
 int bdrv_get_flags(BlockDriverState *bs);
 int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi);
-ImageInfoSpecific *bdrv_get_specific_info(BlockDriverState *bs);
+ImageInfoSpecific *bdrv_get_specific_info(BlockDriverState *bs,
+                                          Error **errp);
 void bdrv_round_to_clusters(BlockDriverState *bs,
                             int64_t offset, int64_t bytes,
                             int64_t *cluster_offset,
diff --git a/include/block/block_int.h b/include/block/block_int.h
index f605622216..0075bafd10 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -319,7 +319,8 @@ struct BlockDriver {
                                   const char *name,
                                   Error **errp);
     int (*bdrv_get_info)(BlockDriverState *bs, BlockDriverInfo *bdi);
-    ImageInfoSpecific *(*bdrv_get_specific_info)(BlockDriverState *bs);
+    ImageInfoSpecific *(*bdrv_get_specific_info)(BlockDriverState *bs,
+                                                 Error **errp);
 
     int coroutine_fn (*bdrv_save_vmstate)(BlockDriverState *bs,
                                           QEMUIOVector *qiov,
diff --git a/nbd/server.c b/nbd/server.c
index 838c150d8c..0910d09a6d 100644
--- a/nbd/server.c
+++ b/nbd/server.c
@@ -1495,7 +1495,6 @@ NBDExport *nbd_export_new(BlockDriverState *bs, uint64_t dev_offset,
 
     if (bitmap) {
         BdrvDirtyBitmap *bm = NULL;
-        BlockDriverState *bs = blk_bs(blk);
 
         while (true) {
             bm = bdrv_find_dirty_bitmap(bs, bitmap);
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 5f17d67d71..0f349d4603 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -69,6 +69,8 @@
 # @encrypt: details about encryption parameters; only set if image
 #           is encrypted (since 2.10)
 #
+# @bitmaps: A list of qcow2 bitmap details (since 4.0)
+#
 # Since: 1.7
 ##
 { 'struct': 'ImageInfoSpecificQCow2',
@@ -77,7 +79,8 @@
       '*lazy-refcounts': 'bool',
       '*corrupt': 'bool',
       'refcount-bits': 'int',
-      '*encrypt': 'ImageInfoSpecificQCow2Encryption'
+      '*encrypt': 'ImageInfoSpecificQCow2Encryption',
+      '*bitmaps': ['Qcow2BitmapInfo']
   } }
 
 ##
@@ -454,6 +457,42 @@
            'status': 'DirtyBitmapStatus'} }
 
 ##
+# @Qcow2BitmapInfoFlags:
+#
+# An enumeration of flags that a bitmap can report to the user.
+#
+# @in-use: This flag is set by any process actively modifying the qcow2 file,
+#          and cleared when the updated bitmap is flushed to the qcow2 image.
+#          The presence of this flag in an offline image means that the bitmap
+#          was not saved correctly after its last usage, and may contain
+#          inconsistent data.
+#
+# @auto: The bitmap must reflect all changes of the virtual disk by any
+#        application that would write to this qcow2 file.
+#
+# Since: 4.0
+##
+{ 'enum': 'Qcow2BitmapInfoFlags',
+  'data': ['in-use', 'auto'] }
+
+##
+# @Qcow2BitmapInfo:
+#
+# Qcow2 bitmap information.
+#
+# @name: the name of the bitmap
+#
+# @granularity: granularity of the bitmap in bytes
+#
+# @flags: flags of the bitmap
+#
+# Since: 4.0
+##
+{ 'struct': 'Qcow2BitmapInfo',
+  'data': {'name': 'str', 'granularity': 'uint32',
+           'flags': ['Qcow2BitmapInfoFlags'] } }
+
+##
 # @BlockLatencyHistogramInfo:
 #
 # Block latency histogram.
diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c
index ee8f56e46a..b9f189f09b 100644
--- a/qemu-io-cmds.c
+++ b/qemu-io-cmds.c
@@ -1661,6 +1661,7 @@ static int info_f(BlockBackend *blk, int argc, char **argv)
     BlockDriverState *bs = blk_bs(blk);
     BlockDriverInfo bdi;
     ImageInfoSpecific *spec_info;
+    Error *local_err = NULL;
     char s1[64], s2[64];
     int ret;
 
@@ -1682,7 +1683,11 @@ static int info_f(BlockBackend *blk, int argc, char **argv)
     printf("cluster size: %s\n", s1);
     printf("vm state offset: %s\n", s2);
 
-    spec_info = bdrv_get_specific_info(bs);
+    spec_info = bdrv_get_specific_info(bs, &local_err);
+    if (local_err) {
+        error_report_err(local_err);
+        return -EIO;
+    }
     if (spec_info) {
         printf("Format specific information:\n");
         bdrv_image_info_specific_dump(fprintf, stdout, spec_info);
diff --git a/tests/qemu-iotests/242 b/tests/qemu-iotests/242
new file mode 100755
index 0000000000..16c65edcd7
--- /dev/null
+++ b/tests/qemu-iotests/242
@@ -0,0 +1,104 @@
+#!/usr/bin/env python
+#
+# Test for qcow2 bitmap printed information
+#
+# Copyright (c) 2019 Virtuozzo International GmbH
+#
+# 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/>.
+#
+
+import iotests
+import json
+from iotests import qemu_img_create, qemu_io, qemu_img_pipe, \
+    file_path, img_info_log, log, filter_qemu_io
+
+iotests.verify_image_format(supported_fmts=['qcow2'])
+
+disk = file_path('disk')
+chunk = 256 * 1024
+bitmap_flag_unknown = 1 << 2
+# flag_offset = 5*cluster_size + flag_offset_in_bitmap_directory_entry
+flag_offset = 0x5000f
+
+
+def print_bitmap(extra_args):
+    log('qemu-img info dump:\n')
+    img_info_log(disk, extra_args=extra_args)
+    result = json.loads(qemu_img_pipe('info', '--force-share',
+                                      '--output=json', disk))
+    if 'bitmaps' in result['format-specific']['data']:
+        bitmaps = result['format-specific']['data']['bitmaps']
+        log('The same bitmaps in JSON format:')
+        log(bitmaps, indent=2)
+    else:
+        log('No bitmap in JSON format output')
+
+
+def add_bitmap(bitmap_number, persistent, disabled):
+    granularity = 1 << (13 + bitmap_number)
+    bitmap_name = 'bitmap-' + str(bitmap_number-1)
+    vm = iotests.VM().add_drive(disk)
+    vm.launch()
+    vm.qmp_log('block-dirty-bitmap-add', node='drive0', name=bitmap_name,
+               granularity=granularity, persistent=persistent,
+               disabled=disabled)
+    vm.shutdown()
+
+
+def write_to_disk(offset, size):
+    write = 'write {} {}'.format(offset, size)
+    log(qemu_io('-c', write, disk), filters=[filter_qemu_io])
+
+
+def toggle_flag(offset):
+    with open(disk, "r+b") as f:
+        f.seek(offset, 0)
+        c = f.read(1)
+        toggled = chr(ord(c) ^ bitmap_flag_unknown)
+        f.seek(-1, 1)
+        f.write(toggled)
+
+
+qemu_img_create('-f', iotests.imgfmt, disk, '1M')
+
+for num in range(1, 4):
+    disabled = False
+    if num == 2:
+        disabled = True
+    log('Test {}'.format(num))
+    add_bitmap(num, num > 1, disabled)
+    write_to_disk((num-1) * chunk, chunk)
+    print_bitmap([])
+    log('')
+
+vm = iotests.VM().add_drive(disk)
+vm.launch()
+num += 1
+log('Test {}\nChecking "in-use" flag...'.format(num))
+print_bitmap(['--force-share'])
+vm.shutdown()
+
+num += 1
+log('\nTest {}'.format(num))
+qemu_img_create('-f', iotests.imgfmt, disk, '1M')
+add_bitmap(1, True, False)
+log('Write an unknown bitmap flag \'{}\' into a new QCOW2 image at offset {}'
+    .format(hex(bitmap_flag_unknown), flag_offset))
+toggle_flag(flag_offset)
+img_info_log(disk)
+toggle_flag(flag_offset)
+log('Unset the unknown bitmap flag \'{}\' in the bitmap directory entry:\n'
+    .format(hex(bitmap_flag_unknown)))
+img_info_log(disk)
+log('Test complete')
diff --git a/tests/qemu-iotests/242.out b/tests/qemu-iotests/242.out
new file mode 100644
index 0000000000..fbe05d71c0
--- /dev/null
+++ b/tests/qemu-iotests/242.out
@@ -0,0 +1,166 @@
+Test 1
+{"execute": "block-dirty-bitmap-add", "arguments": {"disabled": false, "granularity": 16384, "name": "bitmap-0", "node": "drive0", "persistent": false}}
+{"return": {}}
+wrote 262144/262144 bytes at offset 0
+256 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+qemu-img info dump:
+
+image: TEST_IMG
+file format: IMGFMT
+virtual size: 1.0M (1048576 bytes)
+cluster_size: 65536
+Format specific information:
+    compat: 1.1
+    lazy refcounts: false
+    refcount bits: 16
+    corrupt: false
+
+No bitmap in JSON format output
+
+Test 2
+{"execute": "block-dirty-bitmap-add", "arguments": {"disabled": true, "granularity": 32768, "name": "bitmap-1", "node": "drive0", "persistent": true}}
+{"return": {}}
+wrote 262144/262144 bytes at offset 262144
+256 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+qemu-img info dump:
+
+image: TEST_IMG
+file format: IMGFMT
+virtual size: 1.0M (1048576 bytes)
+cluster_size: 65536
+Format specific information:
+    compat: 1.1
+    lazy refcounts: false
+    bitmaps:
+        [0]:
+            flags:
+            name: bitmap-1
+            granularity: 32768
+    refcount bits: 16
+    corrupt: false
+
+The same bitmaps in JSON format:
+[
+  {
+    "flags": [],
+    "granularity": 32768,
+    "name": "bitmap-1"
+  }
+]
+
+Test 3
+{"execute": "block-dirty-bitmap-add", "arguments": {"disabled": false, "granularity": 65536, "name": "bitmap-2", "node": "drive0", "persistent": true}}
+{"return": {}}
+wrote 262144/262144 bytes at offset 524288
+256 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+qemu-img info dump:
+
+image: TEST_IMG
+file format: IMGFMT
+virtual size: 1.0M (1048576 bytes)
+cluster_size: 65536
+Format specific information:
+    compat: 1.1
+    lazy refcounts: false
+    bitmaps:
+        [0]:
+            flags:
+            name: bitmap-1
+            granularity: 32768
+        [1]:
+            flags:
+                [0]: auto
+            name: bitmap-2
+            granularity: 65536
+    refcount bits: 16
+    corrupt: false
+
+The same bitmaps in JSON format:
+[
+  {
+    "flags": [],
+    "granularity": 32768,
+    "name": "bitmap-1"
+  },
+  {
+    "flags": [
+      "auto"
+    ],
+    "granularity": 65536,
+    "name": "bitmap-2"
+  }
+]
+
+Test 4
+Checking "in-use" flag...
+qemu-img info dump:
+
+image: TEST_IMG
+file format: IMGFMT
+virtual size: 1.0M (1048576 bytes)
+cluster_size: 65536
+Format specific information:
+    compat: 1.1
+    lazy refcounts: false
+    bitmaps:
+        [0]:
+            flags:
+                [0]: in-use
+            name: bitmap-1
+            granularity: 32768
+        [1]:
+            flags:
+                [0]: in-use
+                [1]: auto
+            name: bitmap-2
+            granularity: 65536
+    refcount bits: 16
+    corrupt: false
+
+The same bitmaps in JSON format:
+[
+  {
+    "flags": [
+      "in-use"
+    ],
+    "granularity": 32768,
+    "name": "bitmap-1"
+  },
+  {
+    "flags": [
+      "in-use",
+      "auto"
+    ],
+    "granularity": 65536,
+    "name": "bitmap-2"
+  }
+]
+
+Test 5
+{"execute": "block-dirty-bitmap-add", "arguments": {"disabled": false, "granularity": 16384, "name": "bitmap-0", "node": "drive0", "persistent": true}}
+{"return": {}}
+Write an unknown bitmap flag '0x4' into a new QCOW2 image at offset 327695
+qemu-img: Could not open 'TEST_IMG': Bitmap 'bitmap-0' doesn't satisfy the constraints
+
+Unset the unknown bitmap flag '0x4' in the bitmap directory entry:
+
+image: TEST_IMG
+file format: IMGFMT
+virtual size: 1.0M (1048576 bytes)
+cluster_size: 65536
+Format specific information:
+    compat: 1.1
+    lazy refcounts: false
+    bitmaps:
+        [0]:
+            flags:
+                [0]: auto
+            name: bitmap-0
+            granularity: 16384
+    refcount bits: 16
+    corrupt: false
+
+Test complete
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index 959ffe85fc..fc4c416fa3 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -238,3 +238,4 @@
 238 auto quick
 239 rw auto quick
 240 auto quick
+242 rw auto quick