diff --git a/include/hw/block/block.h b/include/hw/block/block.h
index 784953a237..3ba2a33604 100644
--- a/include/hw/block/block.h
+++ b/include/hw/block/block.h
@@ -18,12 +18,12 @@
 
 typedef struct BlockConf {
     BlockBackend *blk;
-    uint16_t physical_block_size;
-    uint16_t logical_block_size;
-    uint16_t min_io_size;
-    uint32_t opt_io_size;
+    uint64_t physical_block_size;
+    uint64_t logical_block_size;
+    uint64_t min_io_size;
+    uint64_t opt_io_size;
     int32_t bootindex;
-    uint32_t discard_granularity;
+    uint64_t discard_granularity;
     /* geometry, not all devices use this */
     uint32_t cyls, heads, secs;
     uint32_t lcyls, lheads, lsecs;
@@ -51,9 +51,9 @@ static inline unsigned int get_physical_block_exp(BlockConf *conf)
                           _conf.logical_block_size),                    \
     DEFINE_PROP_BLOCKSIZE("physical_block_size", _state,                \
                           _conf.physical_block_size),                   \
-    DEFINE_PROP_UINT16("min_io_size", _state, _conf.min_io_size, 0),    \
-    DEFINE_PROP_UINT32("opt_io_size", _state, _conf.opt_io_size, 0),    \
-    DEFINE_PROP_UINT32("discard_granularity", _state,                   \
+    DEFINE_PROP_SIZE("min_io_size", _state, _conf.min_io_size, 0),      \
+    DEFINE_PROP_SIZE("opt_io_size", _state, _conf.opt_io_size, 0),      \
+    DEFINE_PROP_SIZE("discard_granularity", _state,                   \
                        _conf.discard_granularity, -1),                  \
     DEFINE_PROP_ON_OFF_AUTO("write-cache", _state, _conf.wce,           \
                             ON_OFF_AUTO_AUTO),                          \
diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h
index f161604fb6..c3bea7dba6 100644
--- a/include/hw/qdev-properties.h
+++ b/include/hw/qdev-properties.h
@@ -197,7 +197,7 @@ extern const PropertyInfo qdev_prop_pcie_link_width;
 #define DEFINE_PROP_BIOS_CHS_TRANS(_n, _s, _f, _d) \
     DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_bios_chs_trans, int)
 #define DEFINE_PROP_BLOCKSIZE(_n, _s, _f) \
-    DEFINE_PROP_UNSIGNED(_n, _s, _f, 0, qdev_prop_blocksize, uint16_t)
+    DEFINE_PROP_UNSIGNED(_n, _s, _f, 0, qdev_prop_blocksize, uint64_t)
 #define DEFINE_PROP_PCI_HOST_DEVADDR(_n, _s, _f) \
     DEFINE_PROP(_n, _s, _f, qdev_prop_pci_host_devaddr, PCIHostDeviceAddress)
 #define DEFINE_PROP_OFF_AUTO_PCIBAR(_n, _s, _f, _d) \
diff --git a/hw/block/block.c b/hw/block/block.c
index b22207c921..0e11c531aa 100644
--- a/hw/block/block.c
+++ b/hw/block/block.c
@@ -96,12 +96,34 @@ bool blkconf_blocksizes(BlockConf *conf, Error **errp)
         return false;
     }
 
+    /*
+     * all devices which support min_io_size (scsi and virtio-blk) expose it to
+     * the guest as a uint16_t in units of logical blocks
+     */
+    if (conf->min_io_size > conf->logical_block_size * UINT16_MAX) {
+        error_setg(errp,
+                   "min_io_size must not exceed " stringify(UINT16_MAX)
+                   " logical blocks");
+        return false;
+    }
+
     if (!QEMU_IS_ALIGNED(conf->opt_io_size, conf->logical_block_size)) {
         error_setg(errp,
                    "opt_io_size must be a multiple of logical_block_size");
         return false;
     }
 
+    /*
+     * all devices which support opt_io_size (scsi and virtio-blk) expose it to
+     * the guest as a uint32_t in units of logical blocks
+     */
+    if (conf->opt_io_size > conf->logical_block_size * UINT32_MAX) {
+        error_setg(errp,
+                   "opt_io_size must not exceed " stringify(UINT32_MAX)
+                   " logical blocks");
+        return false;
+    }
+
     if (conf->discard_granularity != -1 &&
         !QEMU_IS_ALIGNED(conf->discard_granularity,
                          conf->logical_block_size)) {
@@ -110,6 +132,18 @@ bool blkconf_blocksizes(BlockConf *conf, Error **errp)
         return false;
     }
 
+    /*
+     * all devices which support discard_granularity (scsi) expose it to the
+     * guest as a uint32_t in units of logical blocks
+     */
+    if (conf->discard_granularity != -1 &&
+        conf->discard_granularity > conf->logical_block_size * UINT32_MAX) {
+        error_setg(errp,
+                   "discard_granularity must not exceed " stringify(UINT32_MAX)
+                   " logical blocks");
+        return false;
+    }
+
     return true;
 }
 
diff --git a/hw/core/qdev-properties.c b/hw/core/qdev-properties.c
index 249dc69bd8..fd945ce77f 100644
--- a/hw/core/qdev-properties.c
+++ b/hw/core/qdev-properties.c
@@ -14,6 +14,7 @@
 #include "qapi/visitor.h"
 #include "chardev/char.h"
 #include "qemu/uuid.h"
+#include "qemu/units.h"
 
 void qdev_prop_set_after_realize(DeviceState *dev, const char *name,
                                   Error **errp)
@@ -727,63 +728,6 @@ const PropertyInfo qdev_prop_pci_devfn = {
     .set_default_value = set_default_value_int,
 };
 
-/* --- blocksize --- */
-
-/* lower limit is sector size */
-#define MIN_BLOCK_SIZE          512
-#define MIN_BLOCK_SIZE_STR      stringify(MIN_BLOCK_SIZE)
-/* upper limit is the max power of 2 that fits in uint16_t */
-#define MAX_BLOCK_SIZE          32768
-#define MAX_BLOCK_SIZE_STR      stringify(MAX_BLOCK_SIZE)
-
-static void set_blocksize(Object *obj, Visitor *v, const char *name,
-                          void *opaque, Error **errp)
-{
-    DeviceState *dev = DEVICE(obj);
-    Property *prop = opaque;
-    uint16_t value, *ptr = qdev_get_prop_ptr(dev, prop);
-    Error *local_err = NULL;
-
-    if (dev->realized) {
-        qdev_prop_set_after_realize(dev, name, errp);
-        return;
-    }
-
-    visit_type_uint16(v, name, &value, &local_err);
-    if (local_err) {
-        error_propagate(errp, local_err);
-        return;
-    }
-    /* value of 0 means "unset" */
-    if (value && (value < MIN_BLOCK_SIZE || value > MAX_BLOCK_SIZE)) {
-        error_setg(errp,
-                   "Property %s.%s doesn't take value %" PRIu16
-                   " (minimum: " MIN_BLOCK_SIZE_STR
-                   ", maximum: " MAX_BLOCK_SIZE_STR ")",
-                   dev->id ? : "", name, value);
-        return;
-    }
-
-    /* We rely on power-of-2 blocksizes for bitmasks */
-    if ((value & (value - 1)) != 0) {
-        error_setg(errp,
-                  "Property %s.%s doesn't take value '%" PRId64 "', it's not a power of 2",
-                  dev->id ?: "", name, (int64_t)value);
-        return;
-    }
-
-    *ptr = value;
-}
-
-const PropertyInfo qdev_prop_blocksize = {
-    .name  = "uint16",
-    .description = "A power of two between " MIN_BLOCK_SIZE_STR
-                   " and " MAX_BLOCK_SIZE_STR,
-    .get   = get_uint16,
-    .set   = set_blocksize,
-    .set_default_value = set_default_value_uint,
-};
-
 /* --- pci host address --- */
 
 static void get_pci_host_devaddr(Object *obj, Visitor *v, const char *name,
@@ -1257,6 +1201,63 @@ const PropertyInfo qdev_prop_size = {
     .set_default_value = set_default_value_uint,
 };
 
+/* --- blocksize --- */
+
+/* lower limit is sector size */
+#define MIN_BLOCK_SIZE          512
+#define MIN_BLOCK_SIZE_STR      "512 B"
+/* upper limit is the max power of 2 that fits in uint16_t */
+#define MAX_BLOCK_SIZE          (32 * KiB)
+#define MAX_BLOCK_SIZE_STR      "32 KiB"
+
+static void set_blocksize(Object *obj, Visitor *v, const char *name,
+                          void *opaque, Error **errp)
+{
+    DeviceState *dev = DEVICE(obj);
+    Property *prop = opaque;
+    uint64_t value, *ptr = qdev_get_prop_ptr(dev, prop);
+    Error *local_err = NULL;
+
+    if (dev->realized) {
+        qdev_prop_set_after_realize(dev, name, errp);
+        return;
+    }
+
+    visit_type_size(v, name, &value, &local_err);
+    if (local_err) {
+        error_propagate(errp, local_err);
+        return;
+    }
+    /* value of 0 means "unset" */
+    if (value && (value < MIN_BLOCK_SIZE || value > MAX_BLOCK_SIZE)) {
+        error_setg(errp,
+                   "Property %s.%s doesn't take value %" PRIu64
+                   " (minimum: " MIN_BLOCK_SIZE_STR
+                   ", maximum: " MAX_BLOCK_SIZE_STR ")",
+                   dev->id ? : "", name, value);
+        return;
+    }
+
+    /* We rely on power-of-2 blocksizes for bitmasks */
+    if ((value & (value - 1)) != 0) {
+        error_setg(errp,
+                  "Property %s.%s doesn't take value '%" PRId64 "', it's not a power of 2",
+                  dev->id ?: "", name, (int64_t)value);
+        return;
+    }
+
+    *ptr = value;
+}
+
+const PropertyInfo qdev_prop_blocksize = {
+    .name  = "size",
+    .description = "A power of two between " MIN_BLOCK_SIZE_STR
+                   " and " MAX_BLOCK_SIZE_STR,
+    .get   = get_size,
+    .set   = set_blocksize,
+    .set_default_value = set_default_value_uint,
+};
+
 /* --- object link property --- */
 
 static void create_link_property(ObjectClass *oc, Property *prop)
diff --git a/tests/qemu-iotests/172.out b/tests/qemu-iotests/172.out
index 59cc70aebb..cde0276c3b 100644
--- a/tests/qemu-iotests/172.out
+++ b/tests/qemu-iotests/172.out
@@ -24,11 +24,11 @@ Testing:
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "floppy0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "288"
@@ -54,11 +54,11 @@ Testing: -fda TEST_DIR/t.qcow2
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "floppy0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -81,22 +81,22 @@ Testing: -fdb TEST_DIR/t.qcow2
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "floppy1"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "floppy0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "288"
@@ -119,22 +119,22 @@ Testing: -fda TEST_DIR/t.qcow2 -fdb TEST_DIR/t.qcow2.2
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "floppy1"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "floppy0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -160,11 +160,11 @@ Testing: -drive if=floppy,file=TEST_DIR/t.qcow2
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "floppy0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -187,22 +187,22 @@ Testing: -drive if=floppy,file=TEST_DIR/t.qcow2,index=1
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "floppy1"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "floppy0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "288"
@@ -225,22 +225,22 @@ Testing: -drive if=floppy,file=TEST_DIR/t.qcow2 -drive if=floppy,file=TEST_DIR/t
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "floppy1"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "floppy0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -266,11 +266,11 @@ Testing: -drive if=none,file=TEST_DIR/t.qcow2 -global isa-fdc.driveA=none0
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -293,11 +293,11 @@ Testing: -drive if=none,file=TEST_DIR/t.qcow2 -global isa-fdc.driveB=none0
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -320,22 +320,22 @@ Testing: -drive if=none,file=TEST_DIR/t.qcow2 -drive if=none,file=TEST_DIR/t.qco
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "none1"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -361,11 +361,11 @@ Testing: -drive if=none,file=TEST_DIR/t.qcow2 -device floppy,drive=none0
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -388,11 +388,11 @@ Testing: -drive if=none,file=TEST_DIR/t.qcow2 -device floppy,drive=none0,unit=1
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -415,22 +415,22 @@ Testing: -drive if=none,file=TEST_DIR/t.qcow2 -drive if=none,file=TEST_DIR/t.qco
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "none1"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -456,22 +456,22 @@ Testing: -fda TEST_DIR/t.qcow2 -drive if=none,file=TEST_DIR/t.qcow2.2 -global is
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "floppy0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -494,22 +494,22 @@ Testing: -fdb TEST_DIR/t.qcow2 -drive if=none,file=TEST_DIR/t.qcow2.2 -global is
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "floppy1"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -532,11 +532,11 @@ Testing: -fda TEST_DIR/t.qcow2 -drive if=none,file=TEST_DIR/t.qcow2.2 -global is
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "floppy0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -559,11 +559,11 @@ Testing: -fdb TEST_DIR/t.qcow2 -drive if=none,file=TEST_DIR/t.qcow2.2 -global is
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "floppy1"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -589,22 +589,22 @@ Testing: -fda TEST_DIR/t.qcow2 -drive if=none,file=TEST_DIR/t.qcow2.2 -device fl
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "floppy0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -627,22 +627,22 @@ Testing: -fda TEST_DIR/t.qcow2 -drive if=none,file=TEST_DIR/t.qcow2.2 -device fl
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "floppy0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -665,22 +665,22 @@ Testing: -fdb TEST_DIR/t.qcow2 -drive if=none,file=TEST_DIR/t.qcow2.2 -device fl
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "floppy1"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -703,22 +703,22 @@ Testing: -fdb TEST_DIR/t.qcow2 -drive if=none,file=TEST_DIR/t.qcow2.2 -device fl
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "floppy1"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -750,22 +750,22 @@ Testing: -drive if=floppy,file=TEST_DIR/t.qcow2 -drive if=none,file=TEST_DIR/t.q
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "floppy0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -788,22 +788,22 @@ Testing: -drive if=floppy,file=TEST_DIR/t.qcow2 -drive if=none,file=TEST_DIR/t.q
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "floppy0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -832,22 +832,22 @@ Testing: -drive if=none,file=TEST_DIR/t.qcow2 -drive if=none,file=TEST_DIR/t.qco
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "none1"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -870,22 +870,22 @@ Testing: -drive if=none,file=TEST_DIR/t.qcow2 -drive if=none,file=TEST_DIR/t.qco
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "none1"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -908,22 +908,22 @@ Testing: -drive if=none,file=TEST_DIR/t.qcow2 -drive if=none,file=TEST_DIR/t.qco
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "none1"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -946,22 +946,22 @@ Testing: -drive if=none,file=TEST_DIR/t.qcow2 -drive if=none,file=TEST_DIR/t.qco
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "none1"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
               dev: floppy, id ""
                 unit = 1 (0x1)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -999,11 +999,11 @@ Testing: -device floppy
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = ""
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "288"
@@ -1026,11 +1026,11 @@ Testing: -device floppy,drive-type=120
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = ""
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "120"
@@ -1053,11 +1053,11 @@ Testing: -device floppy,drive-type=144
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = ""
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -1080,11 +1080,11 @@ Testing: -device floppy,drive-type=288
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = ""
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "288"
@@ -1110,11 +1110,11 @@ Testing: -drive if=none,file=TEST_DIR/t.qcow2 -device floppy,drive=none0,drive-t
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "120"
@@ -1137,11 +1137,11 @@ Testing: -drive if=none,file=TEST_DIR/t.qcow2 -device floppy,drive=none0,drive-t
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "288"
@@ -1167,11 +1167,11 @@ Testing: -drive if=none,file=TEST_DIR/t.qcow2 -device floppy,drive=none0,logical
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
@@ -1194,11 +1194,11 @@ Testing: -drive if=none,file=TEST_DIR/t.qcow2 -device floppy,drive=none0,physica
               dev: floppy, id ""
                 unit = 0 (0x0)
                 drive = "none0"
-                logical_block_size = 512 (0x200)
-                physical_block_size = 512 (0x200)
-                min_io_size = 0 (0x0)
-                opt_io_size = 0 (0x0)
-                discard_granularity = 4294967295 (0xffffffff)
+                logical_block_size = 512 (512 B)
+                physical_block_size = 512 (512 B)
+                min_io_size = 0 (0 B)
+                opt_io_size = 0 (0 B)
+                discard_granularity = 18446744073709551615 (16 EiB)
                 write-cache = "auto"
                 share-rw = false
                 drive-type = "144"
