diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index 71a5e0d..f06c08f 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -389,13 +389,16 @@
 
 static bool coroutine_fn do_perform_cow_encrypt(BlockDriverState *bs,
                                                 uint64_t src_cluster_offset,
+                                                uint64_t cluster_offset,
                                                 unsigned offset_in_cluster,
                                                 uint8_t *buffer,
                                                 unsigned bytes)
 {
     if (bytes && bs->encrypted) {
         BDRVQcow2State *s = bs->opaque;
-        int64_t sector = (src_cluster_offset + offset_in_cluster)
+        int64_t sector = (s->crypt_physical_offset ?
+                          (cluster_offset + offset_in_cluster) :
+                          (src_cluster_offset + offset_in_cluster))
                          >> BDRV_SECTOR_BITS;
         assert((offset_in_cluster & ~BDRV_SECTOR_MASK) == 0);
         assert((bytes & ~BDRV_SECTOR_MASK) == 0);
@@ -788,10 +791,11 @@
 
     /* Encrypt the data if necessary before writing it */
     if (bs->encrypted) {
-        if (!do_perform_cow_encrypt(bs, m->offset, start->offset,
-                                    start_buffer, start->nb_bytes) ||
-            !do_perform_cow_encrypt(bs, m->offset, end->offset,
-                                    end_buffer, end->nb_bytes)) {
+        if (!do_perform_cow_encrypt(bs, m->offset, m->alloc_offset,
+                                    start->offset, start_buffer,
+                                    start->nb_bytes) ||
+            !do_perform_cow_encrypt(bs, m->offset, m->alloc_offset,
+                                    end->offset, end_buffer, end->nb_bytes)) {
             ret = -EIO;
             goto fail;
         }
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index 7c06061..81c22e6 100644
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -1856,6 +1856,16 @@
         return ret;
     }
 
+    /* encryption */
+    if (s->crypto_header.length) {
+        ret = inc_refcounts(bs, res, refcount_table, nb_clusters,
+                            s->crypto_header.offset,
+                            s->crypto_header.length);
+        if (ret < 0) {
+            return ret;
+        }
+    }
+
     return check_refblocks(bs, res, fix, rebuild, refcount_table, nb_clusters);
 }
 
diff --git a/block/qcow2.c b/block/qcow2.c
index 1c66ec1..7d1c5a3 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -66,6 +66,7 @@
 #define  QCOW2_EXT_MAGIC_END 0
 #define  QCOW2_EXT_MAGIC_BACKING_FORMAT 0xE2792ACA
 #define  QCOW2_EXT_MAGIC_FEATURE_TABLE 0x6803f857
+#define  QCOW2_EXT_MAGIC_CRYPTO_HEADER 0x0537be77
 
 static int qcow2_probe(const uint8_t *buf, int buf_size, const char *filename)
 {
@@ -80,6 +81,86 @@
 }
 
 
+static ssize_t qcow2_crypto_hdr_read_func(QCryptoBlock *block, size_t offset,
+                                          uint8_t *buf, size_t buflen,
+                                          void *opaque, Error **errp)
+{
+    BlockDriverState *bs = opaque;
+    BDRVQcow2State *s = bs->opaque;
+    ssize_t ret;
+
+    if ((offset + buflen) > s->crypto_header.length) {
+        error_setg(errp, "Request for data outside of extension header");
+        return -1;
+    }
+
+    ret = bdrv_pread(bs->file,
+                     s->crypto_header.offset + offset, buf, buflen);
+    if (ret < 0) {
+        error_setg_errno(errp, -ret, "Could not read encryption header");
+        return -1;
+    }
+    return ret;
+}
+
+
+static ssize_t qcow2_crypto_hdr_init_func(QCryptoBlock *block, size_t headerlen,
+                                          void *opaque, Error **errp)
+{
+    BlockDriverState *bs = opaque;
+    BDRVQcow2State *s = bs->opaque;
+    int64_t ret;
+    int64_t clusterlen;
+
+    ret = qcow2_alloc_clusters(bs, headerlen);
+    if (ret < 0) {
+        error_setg_errno(errp, -ret,
+                         "Cannot allocate cluster for LUKS header size %zu",
+                         headerlen);
+        return -1;
+    }
+
+    s->crypto_header.length = headerlen;
+    s->crypto_header.offset = ret;
+
+    /* Zero fill remaining space in cluster so it has predictable
+     * content in case of future spec changes */
+    clusterlen = size_to_clusters(s, headerlen) * s->cluster_size;
+    ret = bdrv_pwrite_zeroes(bs->file,
+                             ret + headerlen,
+                             clusterlen - headerlen, 0);
+    if (ret < 0) {
+        error_setg_errno(errp, -ret, "Could not zero fill encryption header");
+        return -1;
+    }
+
+    return ret;
+}
+
+
+static ssize_t qcow2_crypto_hdr_write_func(QCryptoBlock *block, size_t offset,
+                                           const uint8_t *buf, size_t buflen,
+                                           void *opaque, Error **errp)
+{
+    BlockDriverState *bs = opaque;
+    BDRVQcow2State *s = bs->opaque;
+    ssize_t ret;
+
+    if ((offset + buflen) > s->crypto_header.length) {
+        error_setg(errp, "Request for data outside of extension header");
+        return -1;
+    }
+
+    ret = bdrv_pwrite(bs->file,
+                      s->crypto_header.offset + offset, buf, buflen);
+    if (ret < 0) {
+        error_setg_errno(errp, -ret, "Could not read encryption header");
+        return -1;
+    }
+    return ret;
+}
+
+
 /* 
  * read qcow2 extension and fill bs
  * start reading from start_offset
@@ -89,7 +170,7 @@
  */
 static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
                                  uint64_t end_offset, void **p_feature_table,
-                                 Error **errp)
+                                 int flags, Error **errp)
 {
     BDRVQcow2State *s = bs->opaque;
     QCowExtension ext;
@@ -165,6 +246,47 @@
             }
             break;
 
+        case QCOW2_EXT_MAGIC_CRYPTO_HEADER: {
+            unsigned int cflags = 0;
+            if (s->crypt_method_header != QCOW_CRYPT_LUKS) {
+                error_setg(errp, "CRYPTO header extension only "
+                           "expected with LUKS encryption method");
+                return -EINVAL;
+            }
+            if (ext.len != sizeof(Qcow2CryptoHeaderExtension)) {
+                error_setg(errp, "CRYPTO header extension size %u, "
+                           "but expected size %zu", ext.len,
+                           sizeof(Qcow2CryptoHeaderExtension));
+                return -EINVAL;
+            }
+
+            ret = bdrv_pread(bs->file, offset, &s->crypto_header, ext.len);
+            if (ret < 0) {
+                error_setg_errno(errp, -ret,
+                                 "Unable to read CRYPTO header extension");
+                return ret;
+            }
+            be64_to_cpus(&s->crypto_header.offset);
+            be64_to_cpus(&s->crypto_header.length);
+
+            if ((s->crypto_header.offset % s->cluster_size) != 0) {
+                error_setg(errp, "Encryption header offset '%" PRIu64 "' is "
+                           "not a multiple of cluster size '%u'",
+                           s->crypto_header.offset, s->cluster_size);
+                return -EINVAL;
+            }
+
+            if (flags & BDRV_O_NO_IO) {
+                cflags |= QCRYPTO_BLOCK_OPEN_NO_IO;
+            }
+            s->crypto = qcrypto_block_open(s->crypto_opts,
+                                           qcow2_crypto_hdr_read_func,
+                                           bs, cflags, errp);
+            if (!s->crypto) {
+                return -EINVAL;
+            }
+        }   break;
+
         default:
             /* unknown magic - save it in case we need to rewrite the header */
             {
@@ -464,7 +586,8 @@
             .type = QEMU_OPT_NUMBER,
             .help = "Clean unused cache entries after this time (in seconds)",
         },
-        BLOCK_CRYPTO_OPT_DEF_QCOW_KEY_SECRET("encrypt."),
+        BLOCK_CRYPTO_OPT_DEF_KEY_SECRET("encrypt.",
+            "ID of secret providing qcow2 AES key or LUKS passphrase"),
         { /* end of list */ }
     },
 };
@@ -784,6 +907,19 @@
             Q_CRYPTO_BLOCK_FORMAT_QCOW, encryptopts, errp);
         break;
 
+    case QCOW_CRYPT_LUKS:
+        if (encryptfmt && !g_str_equal(encryptfmt, "luks")) {
+            error_setg(errp,
+                       "Header reported 'luks' encryption format but "
+                       "options specify '%s'", encryptfmt);
+            ret = -EINVAL;
+            goto fail;
+        }
+        qdict_del(encryptopts, "format");
+        r->crypto_opts = block_crypto_open_opts_init(
+            Q_CRYPTO_BLOCK_FORMAT_LUKS, encryptopts, errp);
+        break;
+
     default:
         error_setg(errp, "Unsupported encryption method %d",
                    s->crypt_method_header);
@@ -977,7 +1113,7 @@
     if (s->incompatible_features & ~QCOW2_INCOMPAT_MASK) {
         void *feature_table = NULL;
         qcow2_read_extensions(bs, header.header_length, ext_end,
-                              &feature_table, NULL);
+                              &feature_table, flags, NULL);
         report_unsupported_feature(errp, feature_table,
                                    s->incompatible_features &
                                    ~QCOW2_INCOMPAT_MASK);
@@ -1009,12 +1145,6 @@
     s->refcount_max = UINT64_C(1) << (s->refcount_bits - 1);
     s->refcount_max += s->refcount_max - 1;
 
-    if (header.crypt_method > QCOW_CRYPT_AES) {
-        error_setg(errp, "Unsupported encryption method: %" PRIu32,
-                   header.crypt_method);
-        ret = -EINVAL;
-        goto fail;
-    }
     s->crypt_method_header = header.crypt_method;
     if (s->crypt_method_header) {
         if (bdrv_uses_whitelist() &&
@@ -1031,6 +1161,15 @@
             goto fail;
         }
 
+        if (s->crypt_method_header == QCOW_CRYPT_AES) {
+            s->crypt_physical_offset = false;
+        } else {
+            /* Assuming LUKS and any future crypt methods we
+             * add will all use physical offsets, due to the
+             * fact that the alternative is insecure...  */
+            s->crypt_physical_offset = true;
+        }
+
         bs->encrypted = true;
         bs->valid_key = true;
     }
@@ -1159,20 +1298,31 @@
 
     /* read qcow2 extensions */
     if (qcow2_read_extensions(bs, header.header_length, ext_end, NULL,
-        &local_err)) {
+                              flags, &local_err)) {
         error_propagate(errp, local_err);
         ret = -EINVAL;
         goto fail;
     }
 
-    if (s->crypt_method_header == QCOW_CRYPT_AES) {
-        unsigned int cflags = 0;
-        if (flags & BDRV_O_NO_IO) {
-            cflags |= QCRYPTO_BLOCK_OPEN_NO_IO;
-        }
-        s->crypto = qcrypto_block_open(s->crypto_opts, NULL, NULL,
-                                       cflags, errp);
-        if (!s->crypto) {
+    /* qcow2_read_extension may have set up the crypto context
+     * if the crypt method needs a header region, some methods
+     * don't need header extensions, so must check here
+     */
+    if (s->crypt_method_header && !s->crypto) {
+        if (s->crypt_method_header == QCOW_CRYPT_AES) {
+            unsigned int cflags = 0;
+            if (flags & BDRV_O_NO_IO) {
+                cflags |= QCRYPTO_BLOCK_OPEN_NO_IO;
+            }
+            s->crypto = qcrypto_block_open(s->crypto_opts, NULL, NULL,
+                                           cflags, errp);
+            if (!s->crypto) {
+                ret = -EINVAL;
+                goto fail;
+            }
+        } else if (!(flags & BDRV_O_NO_IO)) {
+            error_setg(errp, "Missing CRYPTO header for crypt method %d",
+                       s->crypt_method_header);
             ret = -EINVAL;
             goto fail;
         }
@@ -1566,7 +1716,9 @@
                 assert((cur_bytes & (BDRV_SECTOR_SIZE - 1)) == 0);
                 Error *err = NULL;
                 if (qcrypto_block_decrypt(s->crypto,
-                                          offset >> BDRV_SECTOR_BITS,
+                                          (s->crypt_physical_offset ?
+                                           cluster_offset + offset_in_cluster :
+                                           offset) >> BDRV_SECTOR_BITS,
                                           cluster_data,
                                           cur_bytes,
                                           &err) < 0) {
@@ -1700,7 +1852,10 @@
                    QCOW_MAX_CRYPT_CLUSTERS * s->cluster_size);
             qemu_iovec_to_buf(&hd_qiov, 0, cluster_data, hd_qiov.size);
 
-            if (qcrypto_block_encrypt(s->crypto, offset >> BDRV_SECTOR_BITS,
+            if (qcrypto_block_encrypt(s->crypto,
+                                      (s->crypt_physical_offset ?
+                                       cluster_offset + offset_in_cluster :
+                                       offset) >> BDRV_SECTOR_BITS,
                                       cluster_data,
                                       cur_bytes, &err) < 0) {
                 error_free(err);
@@ -2004,6 +2159,22 @@
         buflen -= ret;
     }
 
+    /* Full disk encryption header pointer extension */
+    if (s->crypto_header.offset != 0) {
+        cpu_to_be64s(&s->crypto_header.offset);
+        cpu_to_be64s(&s->crypto_header.length);
+        ret = header_ext_add(buf, QCOW2_EXT_MAGIC_CRYPTO_HEADER,
+                             &s->crypto_header, sizeof(s->crypto_header),
+                             buflen);
+        be64_to_cpus(&s->crypto_header.offset);
+        be64_to_cpus(&s->crypto_header.length);
+        if (ret < 0) {
+            goto fail;
+        }
+        buf += ret;
+        buflen -= ret;
+    }
+
     /* Feature table */
     if (s->qcow_version >= 3) {
         Qcow2Feature features[] = {
@@ -2102,6 +2273,16 @@
     return qcow2_update_header(bs);
 }
 
+static int qcow2_crypt_method_from_format(const char *encryptfmt)
+{
+    if (g_str_equal(encryptfmt, "luks")) {
+        return QCOW_CRYPT_LUKS;
+    } else if (g_str_equal(encryptfmt, "aes")) {
+        return QCOW_CRYPT_AES;
+    } else {
+        return -EINVAL;
+    }
+}
 
 static int qcow2_set_up_encryption(BlockDriverState *bs, const char *encryptfmt,
                                    QemuOpts *opts, Error **errp)
@@ -2111,27 +2292,36 @@
     QCryptoBlock *crypto = NULL;
     int ret = -EINVAL;
     QDict *options, *encryptopts;
+    int fmt;
 
     options = qemu_opts_to_qdict(opts, NULL);
     qdict_extract_subqdict(options, &encryptopts, "encrypt.");
     QDECREF(options);
 
-    if (!g_str_equal(encryptfmt, "aes")) {
-        error_setg(errp, "Unknown encryption format '%s', expected 'aes'",
-                   encryptfmt);
-        ret = -EINVAL;
-        goto out;
+    fmt = qcow2_crypt_method_from_format(encryptfmt);
+
+    switch (fmt) {
+    case QCOW_CRYPT_LUKS:
+        cryptoopts = block_crypto_create_opts_init(
+            Q_CRYPTO_BLOCK_FORMAT_LUKS, encryptopts, errp);
+        break;
+    case QCOW_CRYPT_AES:
+        cryptoopts = block_crypto_create_opts_init(
+            Q_CRYPTO_BLOCK_FORMAT_QCOW, encryptopts, errp);
+        break;
+    default:
+        error_setg(errp, "Unknown encryption format '%s'", encryptfmt);
+        break;
     }
-    cryptoopts = block_crypto_create_opts_init(
-        Q_CRYPTO_BLOCK_FORMAT_QCOW, encryptopts, errp);
     if (!cryptoopts) {
         ret = -EINVAL;
         goto out;
     }
-    s->crypt_method_header = QCOW_CRYPT_AES;
+    s->crypt_method_header = fmt;
 
     crypto = qcrypto_block_create(cryptoopts,
-                                  NULL, NULL,
+                                  qcow2_crypto_hdr_init_func,
+                                  qcow2_crypto_hdr_write_func,
                                   bs, errp);
     if (!crypto) {
         ret = -EINVAL;
@@ -3268,6 +3458,7 @@
     const char *compat = NULL;
     uint64_t cluster_size = s->cluster_size;
     bool encrypt;
+    int encformat;
     int refcount_bits = s->refcount_bits;
     Error *local_err = NULL;
     int ret;
@@ -3310,6 +3501,14 @@
                 error_report("Changing the encryption flag is not supported");
                 return -ENOTSUP;
             }
+        } else if (!strcmp(desc->name, BLOCK_OPT_ENCRYPT_FORMAT)) {
+            encformat = qcow2_crypt_method_from_format(
+                qemu_opt_get(opts, BLOCK_OPT_ENCRYPT_FORMAT));
+
+            if (encformat != s->crypt_method_header) {
+                error_report("Changing the encryption format is not supported");
+                return -ENOTSUP;
+            }
         } else if (!strcmp(desc->name, BLOCK_OPT_CLUSTER_SIZE)) {
             cluster_size = qemu_opt_get_size(opts, BLOCK_OPT_CLUSTER_SIZE,
                                              cluster_size);
@@ -3530,9 +3729,16 @@
         {
             .name = BLOCK_OPT_ENCRYPT_FORMAT,
             .type = QEMU_OPT_STRING,
-            .help = "Encrypt the image, format choices: 'aes'",
+            .help = "Encrypt the image, format choices: 'aes', 'luks'",
         },
-        BLOCK_CRYPTO_OPT_DEF_QCOW_KEY_SECRET("encrypt."),
+        BLOCK_CRYPTO_OPT_DEF_KEY_SECRET("encrypt.",
+            "ID of secret providing qcow AES key or LUKS passphrase"),
+        BLOCK_CRYPTO_OPT_DEF_LUKS_CIPHER_ALG("encrypt."),
+        BLOCK_CRYPTO_OPT_DEF_LUKS_CIPHER_MODE("encrypt."),
+        BLOCK_CRYPTO_OPT_DEF_LUKS_IVGEN_ALG("encrypt."),
+        BLOCK_CRYPTO_OPT_DEF_LUKS_IVGEN_HASH_ALG("encrypt."),
+        BLOCK_CRYPTO_OPT_DEF_LUKS_HASH_ALG("encrypt."),
+        BLOCK_CRYPTO_OPT_DEF_LUKS_ITER_TIME("encrypt."),
         {
             .name = BLOCK_OPT_CLUSTER_SIZE,
             .type = QEMU_OPT_SIZE,
diff --git a/block/qcow2.h b/block/qcow2.h
index 4b89610..84c9853 100644
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -36,6 +36,7 @@
 
 #define QCOW_CRYPT_NONE 0
 #define QCOW_CRYPT_AES  1
+#define QCOW_CRYPT_LUKS 2
 
 #define QCOW_MAX_CRYPT_CLUSTERS 32
 #define QCOW_MAX_SNAPSHOTS 65536
@@ -163,6 +164,11 @@
 struct Qcow2Cache;
 typedef struct Qcow2Cache Qcow2Cache;
 
+typedef struct Qcow2CryptoHeaderExtension {
+    uint64_t offset;
+    uint64_t length;
+} QEMU_PACKED Qcow2CryptoHeaderExtension;
+
 typedef struct Qcow2UnknownHeaderExtension {
     uint32_t magic;
     uint32_t len;
@@ -257,8 +263,11 @@
 
     CoMutex lock;
 
+    Qcow2CryptoHeaderExtension crypto_header; /* QCow2 header extension */
     QCryptoBlockOpenOptions *crypto_opts; /* Disk encryption runtime options */
     QCryptoBlock *crypto; /* Disk encryption format driver */
+    bool crypt_physical_offset; /* Whether to use virtual or physical offset
+                                   for encryption initialization vector tweak */
     uint32_t crypt_method_header;
     uint64_t snapshots_offset;
     int snapshots_size;
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 1f268ee..bb075c0 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -2325,7 +2325,7 @@
 # Since: 2.10
 ##
 { 'enum': 'BlockdevQcow2EncryptionFormat',
-  'data': [ 'aes' ] }
+  'data': [ 'aes', 'luks' ] }
 
 ##
 # @BlockdevQcow2Encryption:
@@ -2335,7 +2335,8 @@
 { 'union': 'BlockdevQcow2Encryption',
   'base': { 'format': 'BlockdevQcow2EncryptionFormat' },
   'discriminator': 'format',
-  'data': { 'aes': 'QCryptoBlockOptionsQCow' } }
+  'data': { 'aes': 'QCryptoBlockOptionsQCow',
+            'luks': 'QCryptoBlockOptionsLUKS'} }
 
 ##
 # @BlockdevOptionsQcow2:
diff --git a/tests/qemu-iotests/082.out b/tests/qemu-iotests/082.out
index 3978db5..dbed67f 100644
--- a/tests/qemu-iotests/082.out
+++ b/tests/qemu-iotests/082.out
@@ -49,8 +49,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -64,8 +70,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -79,8 +91,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -94,8 +112,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -109,8 +133,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -124,8 +154,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -139,8 +175,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -154,8 +196,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -184,8 +232,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -248,8 +302,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -263,8 +323,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -278,8 +344,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -293,8 +365,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -308,8 +386,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -323,8 +407,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -338,8 +428,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -353,8 +449,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -383,8 +485,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -444,8 +552,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -459,8 +573,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -474,8 +594,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -489,8 +615,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -504,8 +636,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -519,8 +657,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -534,8 +678,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -549,8 +699,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates
@@ -581,8 +737,14 @@
 backing_file     File name of a base image
 backing_fmt      Image format of the base image
 encryption       Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
-encrypt.format   Encrypt the image, format choices: 'aes'
-encrypt.key-secret ID of the secret that provides the AES encryption key
+encrypt.format   Encrypt the image, format choices: 'aes', 'luks'
+encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase
+encrypt.cipher-alg Name of encryption cipher algorithm
+encrypt.cipher-mode Name of encryption cipher mode
+encrypt.ivgen-alg Name of IV generator algorithm
+encrypt.ivgen-hash-alg Name of IV generator hash algorithm
+encrypt.hash-alg Name of encryption hash algorithm
+encrypt.iter-time Time to spend in PBKDF in milliseconds
 cluster_size     qcow2 cluster size
 preallocation    Preallocation mode (allowed values: off, metadata, falloc, full)
 lazy_refcounts   Postpone refcount updates