block: Add strong_runtime_opts to BlockDriver

This new field can be set by block drivers to list the runtime options
they accept that may influence the contents of the respective BDS. As of
a follow-up patch, this list will be used by the common
bdrv_refresh_filename() implementation to decide which options to put
into BDS.full_open_options (and consequently whether a JSON filename has
to be created), thus freeing the drivers of having to implement that
logic themselves.

Additionally, this patch adds the field to all of the block drivers that
need it and sets it accordingly.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-id: 20190201192935.18394-22-mreitz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>

23 files changed, 256 insertions, 1 deletions

diff --git a/block/blkdebug.c b/block/blkdebug.c
index 0759452925..71b4275b98 100644
--- a/block/blkdebug.c
+++ b/block/blkdebug.c
@@ -888,6 +888,20 @@ static int blkdebug_reopen_prepare(BDRVReopenState *reopen_state,
     return 0;
 }
 
+static const char *const blkdebug_strong_runtime_opts[] = {
+    "config",
+    "inject-error.",
+    "set-state.",
+    "align",
+    "max-transfer",
+    "opt-write-zero",
+    "max-write-zero",
+    "opt-discard",
+    "max-discard",
+
+    NULL
+};
+
 static BlockDriver bdrv_blkdebug = {
     .format_name            = "blkdebug",
     .protocol_name          = "blkdebug",
@@ -917,6 +931,8 @@ static BlockDriver bdrv_blkdebug = {
                                 = blkdebug_debug_remove_breakpoint,
     .bdrv_debug_resume          = blkdebug_debug_resume,
     .bdrv_debug_is_suspended    = blkdebug_debug_is_suspended,
+
+    .strong_runtime_opts        = blkdebug_strong_runtime_opts,
 };
 
 static void bdrv_blkdebug_init(void)
diff --git a/block/blklogwrites.c b/block/blklogwrites.c
index 36e3d0f822..5da5df112d 100644
--- a/block/blklogwrites.c
+++ b/block/blklogwrites.c
@@ -517,6 +517,13 @@ blk_log_writes_co_pdiscard(BlockDriverState *bs, int64_t offset, int count)
                                  LOG_DISCARD_FLAG, false);
 }
 
+static const char *const blk_log_writes_strong_runtime_opts[] = {
+    "log-append",
+    "log-sector-size",
+
+    NULL
+};
+
 static BlockDriver bdrv_blk_log_writes = {
     .format_name            = "blklogwrites",
     .instance_size          = sizeof(BDRVBlkLogWritesState),
@@ -536,6 +543,7 @@ static BlockDriver bdrv_blk_log_writes = {
     .bdrv_co_block_status   = bdrv_co_block_status_from_file,
 
     .is_filter              = true,
+    .strong_runtime_opts    = blk_log_writes_strong_runtime_opts,
 };
 
 static void bdrv_blk_log_writes_init(void)
diff --git a/block/crypto.c b/block/crypto.c
index d5b1da66a1..fd8c7cfac6 100644
--- a/block/crypto.c
+++ b/block/crypto.c
@@ -619,6 +619,12 @@ block_crypto_get_specific_info_luks(BlockDriverState *bs, Error **errp)
     return spec_info;
 }
 
+static const char *const block_crypto_strong_runtime_opts[] = {
+    BLOCK_CRYPTO_OPT_LUKS_KEY_SECRET,
+
+    NULL
+};
+
 BlockDriver bdrv_crypto_luks = {
     .format_name        = "luks",
     .instance_size      = sizeof(BlockCrypto),
@@ -640,6 +646,8 @@ BlockDriver bdrv_crypto_luks = {
     .bdrv_getlength     = block_crypto_getlength,
     .bdrv_get_info      = block_crypto_get_info_luks,
     .bdrv_get_specific_info = block_crypto_get_specific_info_luks,
+
+    .strong_runtime_opts = block_crypto_strong_runtime_opts,
 };
 
 static void block_crypto_init(void)
diff --git a/block/curl.c b/block/curl.c
index b7ac265d3a..1c9e4f6a64 100644
--- a/block/curl.c
+++ b/block/curl.c
@@ -947,6 +947,19 @@ static int64_t curl_getlength(BlockDriverState *bs)
     return s->len;
 }
 
+static const char *const curl_strong_runtime_opts[] = {
+    CURL_BLOCK_OPT_URL,
+    CURL_BLOCK_OPT_SSLVERIFY,
+    CURL_BLOCK_OPT_COOKIE,
+    CURL_BLOCK_OPT_COOKIE_SECRET,
+    CURL_BLOCK_OPT_USERNAME,
+    CURL_BLOCK_OPT_PASSWORD_SECRET,
+    CURL_BLOCK_OPT_PROXY_USERNAME,
+    CURL_BLOCK_OPT_PROXY_PASSWORD_SECRET,
+
+    NULL
+};
+
 static BlockDriver bdrv_http = {
     .format_name                = "http",
     .protocol_name              = "http",
@@ -961,6 +974,8 @@ static BlockDriver bdrv_http = {
 
     .bdrv_detach_aio_context    = curl_detach_aio_context,
     .bdrv_attach_aio_context    = curl_attach_aio_context,
+
+    .strong_runtime_opts        = curl_strong_runtime_opts,
 };
 
 static BlockDriver bdrv_https = {
@@ -977,6 +992,8 @@ static BlockDriver bdrv_https = {
 
     .bdrv_detach_aio_context    = curl_detach_aio_context,
     .bdrv_attach_aio_context    = curl_attach_aio_context,
+
+    .strong_runtime_opts        = curl_strong_runtime_opts,
 };
 
 static BlockDriver bdrv_ftp = {
@@ -993,6 +1010,8 @@ static BlockDriver bdrv_ftp = {
 
     .bdrv_detach_aio_context    = curl_detach_aio_context,
     .bdrv_attach_aio_context    = curl_attach_aio_context,
+
+    .strong_runtime_opts        = curl_strong_runtime_opts,
 };
 
 static BlockDriver bdrv_ftps = {
@@ -1009,6 +1028,8 @@ static BlockDriver bdrv_ftps = {
 
     .bdrv_detach_aio_context    = curl_detach_aio_context,
     .bdrv_attach_aio_context    = curl_attach_aio_context,
+
+    .strong_runtime_opts        = curl_strong_runtime_opts,
 };
 
 static void curl_block_init(void)
diff --git a/block/gluster.c b/block/gluster.c
index 72891060e3..af64330211 100644
--- a/block/gluster.c
+++ b/block/gluster.c
@@ -1495,6 +1495,21 @@ static int coroutine_fn qemu_gluster_co_block_status(BlockDriverState *bs,
 }
 
 
+static const char *const gluster_strong_open_opts[] = {
+    GLUSTER_OPT_VOLUME,
+    GLUSTER_OPT_PATH,
+    GLUSTER_OPT_TYPE,
+    GLUSTER_OPT_SERVER_PATTERN,
+    GLUSTER_OPT_HOST,
+    GLUSTER_OPT_PORT,
+    GLUSTER_OPT_TO,
+    GLUSTER_OPT_IPV4,
+    GLUSTER_OPT_IPV6,
+    GLUSTER_OPT_SOCKET,
+
+    NULL
+};
+
 static BlockDriver bdrv_gluster = {
     .format_name                  = "gluster",
     .protocol_name                = "gluster",
@@ -1522,6 +1537,7 @@ static BlockDriver bdrv_gluster = {
 #endif
     .bdrv_co_block_status         = qemu_gluster_co_block_status,
     .create_opts                  = &qemu_gluster_create_opts,
+    .strong_runtime_opts          = gluster_strong_open_opts,
 };
 
 static BlockDriver bdrv_gluster_tcp = {
@@ -1551,6 +1567,7 @@ static BlockDriver bdrv_gluster_tcp = {
 #endif
     .bdrv_co_block_status         = qemu_gluster_co_block_status,
     .create_opts                  = &qemu_gluster_create_opts,
+    .strong_runtime_opts          = gluster_strong_open_opts,
 };
 
 static BlockDriver bdrv_gluster_unix = {
@@ -1580,6 +1597,7 @@ static BlockDriver bdrv_gluster_unix = {
 #endif
     .bdrv_co_block_status         = qemu_gluster_co_block_status,
     .create_opts                  = &qemu_gluster_create_opts,
+    .strong_runtime_opts          = gluster_strong_open_opts,
 };
 
 /* rdma is deprecated (actually never supported for volfile fetch).
@@ -1615,6 +1633,7 @@ static BlockDriver bdrv_gluster_rdma = {
 #endif
     .bdrv_co_block_status         = qemu_gluster_co_block_status,
     .create_opts                  = &qemu_gluster_create_opts,
+    .strong_runtime_opts          = gluster_strong_open_opts,
 };
 
 static void bdrv_gluster_init(void)
diff --git a/block/iscsi.c b/block/iscsi.c
index ff473206e6..a0c0084837 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -2448,6 +2448,20 @@ static QemuOptsList iscsi_create_opts = {
     }
 };
 
+static const char *const iscsi_strong_runtime_opts[] = {
+    "transport",
+    "portal",
+    "target",
+    "user",
+    "password",
+    "password-secret",
+    "lun",
+    "initiator-name",
+    "header-digest",
+
+    NULL
+};
+
 static BlockDriver bdrv_iscsi = {
     .format_name     = "iscsi",
     .protocol_name   = "iscsi",
@@ -2482,6 +2496,8 @@ static BlockDriver bdrv_iscsi = {
 
     .bdrv_detach_aio_context = iscsi_detach_aio_context,
     .bdrv_attach_aio_context = iscsi_attach_aio_context,
+
+    .strong_runtime_opts = iscsi_strong_runtime_opts,
 };
 
 #if LIBISCSI_API_VERSION >= (20160603)
@@ -2519,6 +2535,8 @@ static BlockDriver bdrv_iser = {
 
     .bdrv_detach_aio_context = iscsi_detach_aio_context,
     .bdrv_attach_aio_context = iscsi_attach_aio_context,
+
+    .strong_runtime_opts = iscsi_strong_runtime_opts,
 };
 #endif
 
diff --git a/block/nbd.c b/block/nbd.c
index 83e6e9e442..318a58776c 100644
--- a/block/nbd.c
+++ b/block/nbd.c
@@ -538,6 +538,17 @@ static char *nbd_dirname(BlockDriverState *bs, Error **errp)
     return NULL;
 }
 
+static const char *const nbd_strong_runtime_opts[] = {
+    "path",
+    "host",
+    "port",
+    "export",
+    "tls-creds",
+    "server.",
+
+    NULL
+};
+
 static BlockDriver bdrv_nbd = {
     .format_name                = "nbd",
     .protocol_name              = "nbd",
@@ -557,6 +568,7 @@ static BlockDriver bdrv_nbd = {
     .bdrv_refresh_filename      = nbd_refresh_filename,
     .bdrv_co_block_status       = nbd_client_co_block_status,
     .bdrv_dirname               = nbd_dirname,
+    .strong_runtime_opts        = nbd_strong_runtime_opts,
 };
 
 static BlockDriver bdrv_nbd_tcp = {
@@ -578,6 +590,7 @@ static BlockDriver bdrv_nbd_tcp = {
     .bdrv_refresh_filename      = nbd_refresh_filename,
     .bdrv_co_block_status       = nbd_client_co_block_status,
     .bdrv_dirname               = nbd_dirname,
+    .strong_runtime_opts        = nbd_strong_runtime_opts,
 };
 
 static BlockDriver bdrv_nbd_unix = {
@@ -599,6 +612,7 @@ static BlockDriver bdrv_nbd_unix = {
     .bdrv_refresh_filename      = nbd_refresh_filename,
     .bdrv_co_block_status       = nbd_client_co_block_status,
     .bdrv_dirname               = nbd_dirname,
+    .strong_runtime_opts        = nbd_strong_runtime_opts,
 };
 
 static void bdrv_nbd_init(void)
diff --git a/block/nfs.c b/block/nfs.c
index 19ee07c321..6985a44b89 100644
--- a/block/nfs.c
+++ b/block/nfs.c
@@ -878,6 +878,15 @@ static void coroutine_fn nfs_co_invalidate_cache(BlockDriverState *bs,
 }
 #endif
 
+static const char *nfs_strong_runtime_opts[] = {
+    "path",
+    "user",
+    "group",
+    "server.",
+
+    NULL
+};
+
 static BlockDriver bdrv_nfs = {
     .format_name                    = "nfs",
     .protocol_name                  = "nfs",
@@ -905,6 +914,8 @@ static BlockDriver bdrv_nfs = {
     .bdrv_refresh_filename          = nfs_refresh_filename,
     .bdrv_dirname                   = nfs_dirname,
 
+    .strong_runtime_opts            = nfs_strong_runtime_opts,
+
 #ifdef LIBNFS_FEATURE_PAGECACHE
     .bdrv_co_invalidate_cache       = nfs_co_invalidate_cache,
 #endif
diff --git a/block/null.c b/block/null.c
index d442d3e901..858892f0c4 100644
--- a/block/null.c
+++ b/block/null.c
@@ -252,6 +252,13 @@ static void null_refresh_filename(BlockDriverState *bs, QDict *opts)
     bs->full_open_options = qobject_ref(opts);
 }
 
+static const char *const null_strong_runtime_opts[] = {
+    BLOCK_OPT_SIZE,
+    NULL_OPT_ZEROES,
+
+    NULL
+};
+
 static BlockDriver bdrv_null_co = {
     .format_name            = "null-co",
     .protocol_name          = "null-co",
@@ -269,6 +276,7 @@ static BlockDriver bdrv_null_co = {
     .bdrv_co_block_status   = null_co_block_status,
 
     .bdrv_refresh_filename  = null_refresh_filename,
+    .strong_runtime_opts    = null_strong_runtime_opts,
 };
 
 static BlockDriver bdrv_null_aio = {
@@ -288,6 +296,7 @@ static BlockDriver bdrv_null_aio = {
     .bdrv_co_block_status   = null_co_block_status,
 
     .bdrv_refresh_filename  = null_refresh_filename,
+    .strong_runtime_opts    = null_strong_runtime_opts,
 };
 
 static void bdrv_null_init(void)
diff --git a/block/nvme.c b/block/nvme.c
index 6c2ce7dfa5..bf656b2bba 100644
--- a/block/nvme.c
+++ b/block/nvme.c
@@ -1136,6 +1136,13 @@ static void nvme_unregister_buf(BlockDriverState *bs, void *host)
     qemu_vfio_dma_unmap(s->vfio, host);
 }
 
+static const char *const nvme_strong_runtime_opts[] = {
+    NVME_BLOCK_OPT_DEVICE,
+    NVME_BLOCK_OPT_NAMESPACE,
+
+    NULL
+};
+
 static BlockDriver bdrv_nvme = {
     .format_name              = "nvme",
     .protocol_name            = "nvme",
@@ -1153,6 +1160,7 @@ static BlockDriver bdrv_nvme = {
 
     .bdrv_refresh_filename    = nvme_refresh_filename,
     .bdrv_refresh_limits      = nvme_refresh_limits,
+    .strong_runtime_opts      = nvme_strong_runtime_opts,
 
     .bdrv_detach_aio_context  = nvme_detach_aio_context,
     .bdrv_attach_aio_context  = nvme_attach_aio_context,
diff --git a/block/qcow.c b/block/qcow.c
index d47515d3df..25d2025fd0 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -1186,6 +1186,12 @@ static QemuOptsList qcow_create_opts = {
     }
 };
 
+static const char *const qcow_strong_runtime_opts[] = {
+    "encrypt." BLOCK_CRYPTO_OPT_QCOW_KEY_SECRET,
+
+    NULL
+};
+
 static BlockDriver bdrv_qcow = {
     .format_name	= "qcow",
     .instance_size	= sizeof(BDRVQcowState),
@@ -1209,6 +1215,7 @@ static BlockDriver bdrv_qcow = {
     .bdrv_get_info          = qcow_get_info,
 
     .create_opts            = &qcow_create_opts,
+    .strong_runtime_opts    = qcow_strong_runtime_opts,
 };
 
 static void bdrv_qcow_init(void)
diff --git a/block/qcow2.c b/block/qcow2.c
index 3826ce7a39..92242fb14f 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -4936,6 +4936,12 @@ static QemuOptsList qcow2_create_opts = {
     }
 };
 
+static const char *const qcow2_strong_runtime_opts[] = {
+    "encrypt." BLOCK_CRYPTO_OPT_QCOW_KEY_SECRET,
+
+    NULL
+};
+
 BlockDriver bdrv_qcow2 = {
     .format_name        = "qcow2",
     .instance_size      = sizeof(BDRVQcow2State),
@@ -4984,6 +4990,7 @@ BlockDriver bdrv_qcow2 = {
     .bdrv_inactivate            = qcow2_inactivate,
 
     .create_opts         = &qcow2_create_opts,
+    .strong_runtime_opts = qcow2_strong_runtime_opts,
     .bdrv_co_check       = qcow2_co_check,
     .bdrv_amend_options  = qcow2_amend_options,
 
diff --git a/block/quorum.c b/block/quorum.c
index a890f21e85..1af6458dc4 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -1104,6 +1104,15 @@ static char *quorum_dirname(BlockDriverState *bs, Error **errp)
     return NULL;
 }
 
+static const char *const quorum_strong_runtime_opts[] = {
+    QUORUM_OPT_VOTE_THRESHOLD,
+    QUORUM_OPT_BLKVERIFY,
+    QUORUM_OPT_REWRITE,
+    QUORUM_OPT_READ_PATTERN,
+
+    NULL
+};
+
 static BlockDriver bdrv_quorum = {
     .format_name                        = "quorum",
 
@@ -1128,6 +1137,8 @@ static BlockDriver bdrv_quorum = {
 
     .is_filter                          = true,
     .bdrv_recurse_is_first_non_filter   = quorum_recurse_is_first_non_filter,
+
+    .strong_runtime_opts                = quorum_strong_runtime_opts,
 };
 
 static void bdrv_quorum_init(void)
diff --git a/block/raw-format.c b/block/raw-format.c
index d07bcdae62..e3e5ba2c8a 100644
--- a/block/raw-format.c
+++ b/block/raw-format.c
@@ -532,6 +532,13 @@ static int coroutine_fn raw_co_copy_range_to(BlockDriverState *bs,
                                  read_flags, write_flags);
 }
 
+static const char *const raw_strong_runtime_opts[] = {
+    "offset",
+    "size",
+
+    NULL
+};
+
 BlockDriver bdrv_raw = {
     .format_name          = "raw",
     .instance_size        = sizeof(BDRVRawState),
@@ -561,7 +568,8 @@ BlockDriver bdrv_raw = {
     .bdrv_lock_medium     = &raw_lock_medium,
     .bdrv_co_ioctl        = &raw_co_ioctl,
     .create_opts          = &raw_create_opts,
-    .bdrv_has_zero_init   = &raw_has_zero_init
+    .bdrv_has_zero_init   = &raw_has_zero_init,
+    .strong_runtime_opts  = raw_strong_runtime_opts,
 };
 
 static void bdrv_raw_init(void)
diff --git a/block/rbd.c b/block/rbd.c
index 8a1a9f4b6e..0c549c9935 100644
--- a/block/rbd.c
+++ b/block/rbd.c
@@ -1228,6 +1228,18 @@ static QemuOptsList qemu_rbd_create_opts = {
     }
 };
 
+static const char *const qemu_rbd_strong_runtime_opts[] = {
+    "pool",
+    "image",
+    "conf",
+    "snapshot",
+    "user",
+    "server.",
+    "password-secret",
+
+    NULL
+};
+
 static BlockDriver bdrv_rbd = {
     .format_name            = "rbd",
     .instance_size          = sizeof(BDRVRBDState),
@@ -1265,6 +1277,8 @@ static BlockDriver bdrv_rbd = {
 #ifdef LIBRBD_SUPPORTS_INVALIDATE
     .bdrv_co_invalidate_cache = qemu_rbd_co_invalidate_cache,
 #endif
+
+    .strong_runtime_opts    = qemu_rbd_strong_runtime_opts,
 };
 
 static void bdrv_rbd_init(void)
diff --git a/block/replication.c b/block/replication.c
index 9b332002ee..4c80b54daf 100644
--- a/block/replication.c
+++ b/block/replication.c
@@ -676,6 +676,13 @@ static void replication_stop(ReplicationState *rs, bool failover, Error **errp)
     aio_context_release(aio_context);
 }
 
+static const char *const replication_strong_runtime_opts[] = {
+    REPLICATION_MODE,
+    REPLICATION_TOP_ID,
+
+    NULL
+};
+
 BlockDriver bdrv_replication = {
     .format_name                = "replication",
     .instance_size              = sizeof(BDRVReplicationState),
@@ -692,6 +699,7 @@ BlockDriver bdrv_replication = {
     .bdrv_recurse_is_first_non_filter = replication_recurse_is_first_non_filter,
 
     .has_variable_length        = true,
+    .strong_runtime_opts        = replication_strong_runtime_opts,
 };
 
 static void bdrv_replication_init(void)
diff --git a/block/sheepdog.c b/block/sheepdog.c
index b916ba07bf..cbdfe9ab6e 100644
--- a/block/sheepdog.c
+++ b/block/sheepdog.c
@@ -3203,6 +3203,15 @@ static QemuOptsList sd_create_opts = {
     }
 };
 
+static const char *const sd_strong_runtime_opts[] = {
+    "vdi",
+    "snap-id",
+    "tag",
+    "server.",
+
+    NULL
+};
+
 static BlockDriver bdrv_sheepdog = {
     .format_name                  = "sheepdog",
     .protocol_name                = "sheepdog",
@@ -3238,6 +3247,7 @@ static BlockDriver bdrv_sheepdog = {
     .bdrv_attach_aio_context      = sd_attach_aio_context,
 
     .create_opts                  = &sd_create_opts,
+    .strong_runtime_opts          = sd_strong_runtime_opts,
 };
 
 static BlockDriver bdrv_sheepdog_tcp = {
@@ -3275,6 +3285,7 @@ static BlockDriver bdrv_sheepdog_tcp = {
     .bdrv_attach_aio_context      = sd_attach_aio_context,
 
     .create_opts                  = &sd_create_opts,
+    .strong_runtime_opts          = sd_strong_runtime_opts,
 };
 
 static BlockDriver bdrv_sheepdog_unix = {
@@ -3312,6 +3323,7 @@ static BlockDriver bdrv_sheepdog_unix = {
     .bdrv_attach_aio_context      = sd_attach_aio_context,
 
     .create_opts                  = &sd_create_opts,
+    .strong_runtime_opts          = sd_strong_runtime_opts,
 };
 
 static void bdrv_sheepdog_init(void)
diff --git a/block/ssh.c b/block/ssh.c
index bbc513e095..190ef95300 100644
--- a/block/ssh.c
+++ b/block/ssh.c
@@ -1254,6 +1254,17 @@ static int coroutine_fn ssh_co_truncate(BlockDriverState *bs, int64_t offset,
     return ssh_grow_file(s, offset, errp);
 }
 
+static const char *const ssh_strong_runtime_opts[] = {
+    "host",
+    "port",
+    "path",
+    "user",
+    "host_key_check",
+    "server.",
+
+    NULL
+};
+
 static BlockDriver bdrv_ssh = {
     .format_name                  = "ssh",
     .protocol_name                = "ssh",
@@ -1270,6 +1281,7 @@ static BlockDriver bdrv_ssh = {
     .bdrv_co_truncate             = ssh_co_truncate,
     .bdrv_co_flush_to_disk        = ssh_co_flush,
     .create_opts                  = &ssh_create_opts,
+    .strong_runtime_opts          = ssh_strong_runtime_opts,
 };
 
 static void bdrv_ssh_init(void)
diff --git a/block/throttle.c b/block/throttle.c
index 636c9764aa..f64dcc27b9 100644
--- a/block/throttle.c
+++ b/block/throttle.c
@@ -227,6 +227,12 @@ static void coroutine_fn throttle_co_drain_end(BlockDriverState *bs)
     atomic_dec(&tgm->io_limits_disabled);
 }
 
+static const char *const throttle_strong_runtime_opts[] = {
+    QEMU_OPT_THROTTLE_GROUP_NAME,
+
+    NULL
+};
+
 static BlockDriver bdrv_throttle = {
     .format_name                        =   "throttle",
     .instance_size                      =   sizeof(ThrottleGroupMember),
@@ -259,6 +265,7 @@ static BlockDriver bdrv_throttle = {
     .bdrv_co_drain_end                  =   throttle_co_drain_end,
 
     .is_filter                          =   true,
+    .strong_runtime_opts                =   throttle_strong_runtime_opts,
 };
 
 static void bdrv_throttle_init(void)
diff --git a/block/vpc.c b/block/vpc.c
index 52ab717642..a902a4c54d 100644
--- a/block/vpc.c
+++ b/block/vpc.c
@@ -1218,6 +1218,12 @@ static QemuOptsList vpc_create_opts = {
     }
 };
 
+static const char *const vpc_strong_runtime_opts[] = {
+    VPC_OPT_SIZE_CALC,
+
+    NULL
+};
+
 static BlockDriver bdrv_vpc = {
     .format_name    = "vpc",
     .instance_size  = sizeof(BDRVVPCState),
@@ -1238,6 +1244,7 @@ static BlockDriver bdrv_vpc = {
 
     .create_opts            = &vpc_create_opts,
     .bdrv_has_zero_init     = vpc_has_zero_init,
+    .strong_runtime_opts    = vpc_strong_runtime_opts,
 };
 
 static void bdrv_vpc_init(void)
diff --git a/block/vvfat.c b/block/vvfat.c
index b7b61ea8b7..5f66787890 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -3253,6 +3253,16 @@ static void vvfat_close(BlockDriverState *bs)
     }
 }
 
+static const char *const vvfat_strong_runtime_opts[] = {
+    "dir",
+    "fat-type",
+    "floppy",
+    "label",
+    "rw",
+
+    NULL
+};
+
 static BlockDriver bdrv_vvfat = {
     .format_name            = "vvfat",
     .protocol_name          = "fat",
@@ -3267,6 +3277,8 @@ static BlockDriver bdrv_vvfat = {
     .bdrv_co_preadv         = vvfat_co_preadv,
     .bdrv_co_pwritev        = vvfat_co_pwritev,
     .bdrv_co_block_status   = vvfat_co_block_status,
+
+    .strong_runtime_opts    = vvfat_strong_runtime_opts,
 };
 
 static void bdrv_vvfat_init(void)
diff --git a/block/vxhs.c b/block/vxhs.c
index 0cb0a007e9..2e18229ba4 100644
--- a/block/vxhs.c
+++ b/block/vxhs.c
@@ -556,6 +556,16 @@ static int64_t vxhs_getlength(BlockDriverState *bs)
     return vdisk_size;
 }
 
+static const char *const vxhs_strong_runtime_opts[] = {
+    VXHS_OPT_VDISK_ID,
+    "tls-creds",
+    VXHS_OPT_HOST,
+    VXHS_OPT_PORT,
+    VXHS_OPT_SERVER".",
+
+    NULL
+};
+
 static BlockDriver bdrv_vxhs = {
     .format_name                  = "vxhs",
     .protocol_name                = "vxhs",
@@ -567,6 +577,7 @@ static BlockDriver bdrv_vxhs = {
     .bdrv_getlength               = vxhs_getlength,
     .bdrv_aio_preadv              = vxhs_aio_preadv,
     .bdrv_aio_pwritev             = vxhs_aio_pwritev,
+    .strong_runtime_opts          = vxhs_strong_runtime_opts,
 };
 
 static void bdrv_vxhs_init(void)
diff --git a/include/block/block_int.h b/include/block/block_int.h
index e4d4817ea6..160e8cac1f 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -517,6 +517,13 @@ struct BlockDriver {
     void (*bdrv_register_buf)(BlockDriverState *bs, void *host, size_t size);
     void (*bdrv_unregister_buf)(BlockDriverState *bs, void *host);
     QLIST_ENTRY(BlockDriver) list;
+
+    /* Pointer to a NULL-terminated array of names of strong options
+     * that can be specified for bdrv_open(). A strong option is one
+     * that changes the data of a BDS.
+     * If this pointer is NULL, the array is considered empty.
+     * "filename" and "driver" are always considered strong. */
+    const char *const *strong_runtime_opts;
 };
 
 typedef struct BlockLimits {