diff --git a/cmd/zdb/zdb.c b/cmd/zdb/zdb.c
index 4880c80487..449b6bf2cc 100644
--- a/cmd/zdb/zdb.c
+++ b/cmd/zdb/zdb.c
@@ -199,7 +199,8 @@ sublivelist_verify_blkptr(void *arg, const blkptr_t *bp, boolean_t free,
 					break;
 				sublivelist_verify_block_t svb = {
 				    .svb_dva = bp->blk_dva[i],
-				    .svb_allocated_txg = bp->blk_birth
+				    .svb_allocated_txg =
+				    BP_GET_LOGICAL_BIRTH(bp)
 				};
 
 				if (zfs_btree_find(&sv->sv_leftover, &svb,
@@ -2340,7 +2341,7 @@ snprintf_blkptr_compact(char *blkbuf, size_t buflen, const blkptr_t *bp,
 		    (int)BPE_GET_ETYPE(bp),
 		    (u_longlong_t)BPE_GET_LSIZE(bp),
 		    (u_longlong_t)BPE_GET_PSIZE(bp),
-		    (u_longlong_t)bp->blk_birth);
+		    (u_longlong_t)BP_GET_LOGICAL_BIRTH(bp));
 		return;
 	}
 
@@ -2358,7 +2359,7 @@ snprintf_blkptr_compact(char *blkbuf, size_t buflen, const blkptr_t *bp,
 		    buflen - strlen(blkbuf),
 		    "%llxL B=%llu",
 		    (u_longlong_t)BP_GET_LSIZE(bp),
-		    (u_longlong_t)bp->blk_birth);
+		    (u_longlong_t)BP_GET_LOGICAL_BIRTH(bp));
 	} else {
 		(void) snprintf(blkbuf + strlen(blkbuf),
 		    buflen - strlen(blkbuf),
@@ -2366,8 +2367,8 @@ snprintf_blkptr_compact(char *blkbuf, size_t buflen, const blkptr_t *bp,
 		    (u_longlong_t)BP_GET_LSIZE(bp),
 		    (u_longlong_t)BP_GET_PSIZE(bp),
 		    (u_longlong_t)BP_GET_FILL(bp),
-		    (u_longlong_t)bp->blk_birth,
-		    (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
+		    (u_longlong_t)BP_GET_LOGICAL_BIRTH(bp),
+		    (u_longlong_t)BP_GET_BIRTH(bp));
 		if (bp_freed)
 			(void) snprintf(blkbuf + strlen(blkbuf),
 			    buflen - strlen(blkbuf), " %s", "FREE");
@@ -2417,7 +2418,7 @@ visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
 {
 	int err = 0;
 
-	if (bp->blk_birth == 0)
+	if (BP_GET_LOGICAL_BIRTH(bp) == 0)
 		return (0);
 
 	print_indirect(spa, bp, zb, dnp);
@@ -2605,7 +2606,7 @@ dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
 	(void) arg, (void) tx;
 	char blkbuf[BP_SPRINTF_LEN];
 
-	if (bp->blk_birth != 0) {
+	if (BP_GET_LOGICAL_BIRTH(bp) != 0) {
 		snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
 		(void) printf("\t%s\n", blkbuf);
 	}
@@ -2646,7 +2647,7 @@ dump_bpobj_cb(void *arg, const blkptr_t *bp, boolean_t bp_freed, dmu_tx_t *tx)
 	(void) arg, (void) tx;
 	char blkbuf[BP_SPRINTF_LEN];
 
-	ASSERT(bp->blk_birth != 0);
+	ASSERT(BP_GET_LOGICAL_BIRTH(bp) != 0);
 	snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp, bp_freed);
 	(void) printf("\t%s\n", blkbuf);
 	return (0);
@@ -5788,7 +5789,7 @@ zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
 	if (zb->zb_level == ZB_DNODE_LEVEL)
 		return (0);
 
-	if (dump_opt['b'] >= 5 && bp->blk_birth > 0) {
+	if (dump_opt['b'] >= 5 && BP_GET_LOGICAL_BIRTH(bp) > 0) {
 		char blkbuf[BP_SPRINTF_LEN];
 		snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
 		(void) printf("objset %llu object %llu "
diff --git a/cmd/zdb/zdb_il.c b/cmd/zdb/zdb_il.c
index 63d95ddedc..e3caaeb70e 100644
--- a/cmd/zdb/zdb_il.c
+++ b/cmd/zdb/zdb_il.c
@@ -173,8 +173,8 @@ zil_prt_rec_write(zilog_t *zilog, int txtype, const void *arg)
 
 	if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
 		(void) printf("%shas blkptr, %s\n", tab_prefix,
-		    !BP_IS_HOLE(bp) &&
-		    bp->blk_birth >= spa_min_claim_txg(zilog->zl_spa) ?
+		    !BP_IS_HOLE(bp) && BP_GET_LOGICAL_BIRTH(bp) >=
+		    spa_min_claim_txg(zilog->zl_spa) ?
 		    "will claim" : "won't claim");
 		print_log_bp(bp, tab_prefix);
 
@@ -186,7 +186,7 @@ zil_prt_rec_write(zilog_t *zilog, int txtype, const void *arg)
 			(void) printf("%s<hole>\n", tab_prefix);
 			return;
 		}
-		if (bp->blk_birth < zilog->zl_header->zh_claim_txg) {
+		if (BP_GET_LOGICAL_BIRTH(bp) < zilog->zl_header->zh_claim_txg) {
 			(void) printf("%s<block already committed>\n",
 			    tab_prefix);
 			return;
@@ -237,8 +237,8 @@ zil_prt_rec_write_enc(zilog_t *zilog, int txtype, const void *arg)
 
 	if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
 		(void) printf("%shas blkptr, %s\n", tab_prefix,
-		    !BP_IS_HOLE(bp) &&
-		    bp->blk_birth >= spa_min_claim_txg(zilog->zl_spa) ?
+		    !BP_IS_HOLE(bp) && BP_GET_LOGICAL_BIRTH(bp) >=
+		    spa_min_claim_txg(zilog->zl_spa) ?
 		    "will claim" : "won't claim");
 		print_log_bp(bp, tab_prefix);
 	}
@@ -473,7 +473,7 @@ print_log_block(zilog_t *zilog, const blkptr_t *bp, void *arg,
 
 	if (claim_txg != 0)
 		claim = "already claimed";
-	else if (bp->blk_birth >= spa_min_claim_txg(zilog->zl_spa))
+	else if (BP_GET_LOGICAL_BIRTH(bp) >= spa_min_claim_txg(zilog->zl_spa))
 		claim = "will claim";
 	else
 		claim = "won't claim";
diff --git a/cmd/zhack.c b/cmd/zhack.c
index 44611887dd..f15a6ece53 100644
--- a/cmd/zhack.c
+++ b/cmd/zhack.c
@@ -612,8 +612,8 @@ zhack_repair_undetach(uberblock_t *ub, nvlist_t *cfg, const int l)
 	 * Uberblock root block pointer has valid birth TXG.
 	 * Copying it to the label NVlist
 	 */
-	if (ub->ub_rootbp.blk_birth != 0) {
-		const uint64_t txg = ub->ub_rootbp.blk_birth;
+	if (BP_GET_LOGICAL_BIRTH(&ub->ub_rootbp) != 0) {
+		const uint64_t txg = BP_GET_LOGICAL_BIRTH(&ub->ub_rootbp);
 		ub->ub_txg = txg;
 
 		if (nvlist_remove_all(cfg, ZPOOL_CONFIG_CREATE_TXG) != 0) {
diff --git a/include/sys/spa.h b/include/sys/spa.h
index cada3c8410..fb4c93431a 100644
--- a/include/sys/spa.h
+++ b/include/sys/spa.h
@@ -125,15 +125,15 @@ typedef struct zio_cksum_salt {
  *
  *	64	56	48	40	32	24	16	8	0
  *	+-------+-------+-------+-------+-------+-------+-------+-------+
- * 0	|  pad  |	  vdev1         | GRID  |	  ASIZE		|
+ * 0	|  pad  |	  vdev1         | pad   |	  ASIZE		|
  *	+-------+-------+-------+-------+-------+-------+-------+-------+
  * 1	|G|			 offset1				|
  *	+-------+-------+-------+-------+-------+-------+-------+-------+
- * 2	|  pad  |	  vdev2         | GRID  |	  ASIZE		|
+ * 2	|  pad  |	  vdev2         | pad   |	  ASIZE		|
  *	+-------+-------+-------+-------+-------+-------+-------+-------+
  * 3	|G|			 offset2				|
  *	+-------+-------+-------+-------+-------+-------+-------+-------+
- * 4	|  pad  |	  vdev3         | GRID  |	  ASIZE		|
+ * 4	|  pad  |	  vdev3         | pad   |	  ASIZE		|
  *	+-------+-------+-------+-------+-------+-------+-------+-------+
  * 5	|G|			 offset3				|
  *	+-------+-------+-------+-------+-------+-------+-------+-------+
@@ -165,7 +165,6 @@ typedef struct zio_cksum_salt {
  * LSIZE	logical size
  * PSIZE	physical size (after compression)
  * ASIZE	allocated size (including RAID-Z parity and gang block headers)
- * GRID		RAID-Z layout information (reserved for future use)
  * cksum	checksum function
  * comp		compression function
  * G		gang block indicator
@@ -190,11 +189,11 @@ typedef struct zio_cksum_salt {
  *
  *	64	56	48	40	32	24	16	8	0
  *	+-------+-------+-------+-------+-------+-------+-------+-------+
- * 0	|		vdev1		| GRID  |	  ASIZE		|
+ * 0	|		vdev1		| pad   |	  ASIZE		|
  *	+-------+-------+-------+-------+-------+-------+-------+-------+
  * 1	|G|			 offset1				|
  *	+-------+-------+-------+-------+-------+-------+-------+-------+
- * 2	|		vdev2		| GRID  |	  ASIZE		|
+ * 2	|		vdev2		| pad   |	  ASIZE		|
  *	+-------+-------+-------+-------+-------+-------+-------+-------+
  * 3	|G|			 offset2				|
  *	+-------+-------+-------+-------+-------+-------+-------+-------+
@@ -355,7 +354,7 @@ typedef enum bp_embedded_type {
 #define	BPE_NUM_WORDS 14
 #define	BPE_PAYLOAD_SIZE (BPE_NUM_WORDS * sizeof (uint64_t))
 #define	BPE_IS_PAYLOADWORD(bp, wp) \
-	((wp) != &(bp)->blk_prop && (wp) != &(bp)->blk_birth)
+	((wp) != &(bp)->blk_prop && (wp) != (&(bp)->blk_birth_word[1]))
 
 #define	SPA_BLKPTRSHIFT	7		/* blkptr_t is 128 bytes	*/
 #define	SPA_DVAS_PER_BP	3		/* Number of DVAs in a bp	*/
@@ -374,8 +373,7 @@ typedef struct blkptr {
 	dva_t		blk_dva[SPA_DVAS_PER_BP]; /* Data Virtual Addresses */
 	uint64_t	blk_prop;	/* size, compression, type, etc	    */
 	uint64_t	blk_pad[2];	/* Extra space for the future	    */
-	uint64_t	blk_phys_birth;	/* txg when block was allocated	    */
-	uint64_t	blk_birth;	/* transaction group at birth	    */
+	uint64_t	blk_birth_word[2];
 	uint64_t	blk_fill;	/* fill count			    */
 	zio_cksum_t	blk_cksum;	/* 256-bit checksum		    */
 } blkptr_t;
@@ -395,9 +393,6 @@ typedef struct blkptr {
 	BF64_SET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, \
 	SPA_MINBLOCKSHIFT, 0, x)
 
-#define	DVA_GET_GRID(dva)	BF64_GET((dva)->dva_word[0], 24, 8)
-#define	DVA_SET_GRID(dva, x)	BF64_SET((dva)->dva_word[0], 24, 8, x)
-
 #define	DVA_GET_VDEV(dva)	BF64_GET((dva)->dva_word[0], 32, SPA_VDEVBITS)
 #define	DVA_SET_VDEV(dva, x)	\
 	BF64_SET((dva)->dva_word[0], 32, SPA_VDEVBITS, x)
@@ -480,15 +475,23 @@ typedef struct blkptr {
 #define	BP_GET_FREE(bp)			BF64_GET((bp)->blk_fill, 0, 1)
 #define	BP_SET_FREE(bp, x)		BF64_SET((bp)->blk_fill, 0, 1, x)
 
-#define	BP_PHYSICAL_BIRTH(bp)		\
-	(BP_IS_EMBEDDED(bp) ? 0 : \
-	(bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth)
+#define	BP_GET_LOGICAL_BIRTH(bp)	(bp)->blk_birth_word[1]
+#define	BP_SET_LOGICAL_BIRTH(bp, x)	((bp)->blk_birth_word[1] = (x))
+
+#define	BP_GET_PHYSICAL_BIRTH(bp)	(bp)->blk_birth_word[0]
+#define	BP_SET_PHYSICAL_BIRTH(bp, x)	((bp)->blk_birth_word[0] = (x))
+
+#define	BP_GET_BIRTH(bp)					\
+	(BP_IS_EMBEDDED(bp) ? 0 : 				\
+	BP_GET_PHYSICAL_BIRTH(bp) ? BP_GET_PHYSICAL_BIRTH(bp) :	\
+	BP_GET_LOGICAL_BIRTH(bp))
 
 #define	BP_SET_BIRTH(bp, logical, physical)	\
 {						\
 	ASSERT(!BP_IS_EMBEDDED(bp));		\
-	(bp)->blk_birth = (logical);		\
-	(bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \
+	BP_SET_LOGICAL_BIRTH(bp, logical);	\
+	BP_SET_PHYSICAL_BIRTH(bp, 		\
+	    ((logical) == (physical) ? 0 : (physical))); \
 }
 
 #define	BP_GET_FILL(bp)				\
@@ -541,8 +544,8 @@ typedef struct blkptr {
 	(dva1)->dva_word[0] == (dva2)->dva_word[0])
 
 #define	BP_EQUAL(bp1, bp2)	\
-	(BP_PHYSICAL_BIRTH(bp1) == BP_PHYSICAL_BIRTH(bp2) &&	\
-	(bp1)->blk_birth == (bp2)->blk_birth &&			\
+	(BP_GET_BIRTH(bp1) == BP_GET_BIRTH(bp2) &&	\
+	BP_GET_LOGICAL_BIRTH(bp1) == BP_GET_LOGICAL_BIRTH(bp2) &&	\
 	DVA_EQUAL(&(bp1)->blk_dva[0], &(bp2)->blk_dva[0]) &&	\
 	DVA_EQUAL(&(bp1)->blk_dva[1], &(bp2)->blk_dva[1]) &&	\
 	DVA_EQUAL(&(bp1)->blk_dva[2], &(bp2)->blk_dva[2]))
@@ -581,8 +584,8 @@ typedef struct blkptr {
 	(bp)->blk_prop = 0;			\
 	(bp)->blk_pad[0] = 0;			\
 	(bp)->blk_pad[1] = 0;			\
-	(bp)->blk_phys_birth = 0;		\
-	(bp)->blk_birth = 0;			\
+	(bp)->blk_birth_word[0] = 0;		\
+	(bp)->blk_birth_word[1] = 0;		\
 	(bp)->blk_fill = 0;			\
 	ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0);	\
 }
@@ -631,7 +634,7 @@ typedef struct blkptr {
 		    (u_longlong_t)BP_GET_LEVEL(bp),			\
 		    type,						\
 		    (u_longlong_t)BP_GET_LSIZE(bp),			\
-		    (u_longlong_t)bp->blk_birth);			\
+		    (u_longlong_t)BP_GET_LOGICAL_BIRTH(bp));		\
 	} else if (BP_IS_EMBEDDED(bp)) {				\
 		len = func(buf + len, size - len,			\
 		    "EMBEDDED [L%llu %s] et=%u %s "			\
@@ -642,14 +645,14 @@ typedef struct blkptr {
 		    compress,						\
 		    (u_longlong_t)BPE_GET_LSIZE(bp),			\
 		    (u_longlong_t)BPE_GET_PSIZE(bp),			\
-		    (u_longlong_t)bp->blk_birth);			\
+		    (u_longlong_t)BP_GET_LOGICAL_BIRTH(bp));		\
 	} else if (BP_IS_REDACTED(bp)) {				\
 		len += func(buf + len, size - len,			\
 		    "REDACTED [L%llu %s] size=%llxL birth=%lluL",	\
 		    (u_longlong_t)BP_GET_LEVEL(bp),			\
 		    type,						\
 		    (u_longlong_t)BP_GET_LSIZE(bp),			\
-		    (u_longlong_t)bp->blk_birth);			\
+		    (u_longlong_t)BP_GET_LOGICAL_BIRTH(bp));		\
 	} else {							\
 		for (int d = 0; d < BP_GET_NDVAS(bp); d++) {		\
 			const dva_t *dva = &bp->blk_dva[d];		\
@@ -691,8 +694,8 @@ typedef struct blkptr {
 		    ws,							\
 		    (u_longlong_t)BP_GET_LSIZE(bp),			\
 		    (u_longlong_t)BP_GET_PSIZE(bp),			\
-		    (u_longlong_t)bp->blk_birth,			\
-		    (u_longlong_t)BP_PHYSICAL_BIRTH(bp),		\
+		    (u_longlong_t)BP_GET_LOGICAL_BIRTH(bp),		\
+		    (u_longlong_t)BP_GET_BIRTH(bp),			\
 		    (u_longlong_t)BP_GET_FILL(bp),			\
 		    ws,							\
 		    (u_longlong_t)bp->blk_cksum.zc_word[0],		\
@@ -1142,9 +1145,9 @@ extern const char *spa_state_to_name(spa_t *spa);
 /* error handling */
 struct zbookmark_phys;
 extern void spa_log_error(spa_t *spa, const zbookmark_phys_t *zb,
-    const uint64_t *birth);
+    const uint64_t birth);
 extern void spa_remove_error(spa_t *spa, zbookmark_phys_t *zb,
-    const uint64_t *birth);
+    uint64_t birth);
 extern int zfs_ereport_post(const char *clazz, spa_t *spa, vdev_t *vd,
     const zbookmark_phys_t *zb, zio_t *zio, uint64_t state);
 extern boolean_t zfs_ereport_is_valid(const char *clazz, spa_t *spa, vdev_t *vd,
diff --git a/include/sys/uberblock_impl.h b/include/sys/uberblock_impl.h
index d3a71cc8f8..1736b32cd3 100644
--- a/include/sys/uberblock_impl.h
+++ b/include/sys/uberblock_impl.h
@@ -165,7 +165,7 @@ struct uberblock {
 	 * pool from a checkpointed uberblock [see spa_ld_select_uberblock()],
 	 * the value of the field is used to determine which ZIL blocks have
 	 * been allocated according to the ms_sm when we are rewinding to a
-	 * checkpoint. Specifically, if blk_birth > ub_checkpoint_txg, then
+	 * checkpoint. Specifically, if logical birth > ub_checkpoint_txg,then
 	 * the ZIL block is not allocated [see uses of spa_min_claim_txg()].
 	 */
 	uint64_t	ub_checkpoint_txg;
diff --git a/lib/libzdb/libzdb.c b/lib/libzdb/libzdb.c
index 9989fa1eb8..12144dc65e 100644
--- a/lib/libzdb/libzdb.c
+++ b/lib/libzdb/libzdb.c
@@ -93,9 +93,9 @@ livelist_compare(const void *larg, const void *rarg)
 	 * Since we're storing blkptrs without cancelling FREE/ALLOC pairs,
 	 * it's possible the offsets are equal. In that case, sort by txg
 	 */
-	if (l->blk_birth < r->blk_birth) {
+	if (BP_GET_LOGICAL_BIRTH(l) < BP_GET_LOGICAL_BIRTH(r)) {
 		return (-1);
-	} else if (l->blk_birth > r->blk_birth) {
+	} else if (BP_GET_LOGICAL_BIRTH(l) > BP_GET_LOGICAL_BIRTH(r)) {
 		return (+1);
 	}
 	return (0);
diff --git a/module/zfs/arc.c b/module/zfs/arc.c
index 3bcffb3c7e..b1bcac6c44 100644
--- a/module/zfs/arc.c
+++ b/module/zfs/arc.c
@@ -1014,7 +1014,7 @@ static arc_buf_hdr_t *
 buf_hash_find(uint64_t spa, const blkptr_t *bp, kmutex_t **lockp)
 {
 	const dva_t *dva = BP_IDENTITY(bp);
-	uint64_t birth = BP_PHYSICAL_BIRTH(bp);
+	uint64_t birth = BP_GET_BIRTH(bp);
 	uint64_t idx = BUF_HASH_INDEX(spa, dva, birth);
 	kmutex_t *hash_lock = BUF_HASH_LOCK(idx);
 	arc_buf_hdr_t *hdr;
@@ -2183,7 +2183,7 @@ arc_untransform(arc_buf_t *buf, spa_t *spa, const zbookmark_phys_t *zb,
 		 * (and generate an ereport) before leaving the ARC.
 		 */
 		ret = SET_ERROR(EIO);
-		spa_log_error(spa, zb, &buf->b_hdr->b_birth);
+		spa_log_error(spa, zb, buf->b_hdr->b_birth);
 		(void) zfs_ereport_post(FM_EREPORT_ZFS_AUTHENTICATION,
 		    spa, NULL, zb, NULL, 0);
 	}
@@ -5251,7 +5251,7 @@ arc_read_done(zio_t *zio)
 	if (HDR_IN_HASH_TABLE(hdr)) {
 		arc_buf_hdr_t *found;
 
-		ASSERT3U(hdr->b_birth, ==, BP_PHYSICAL_BIRTH(zio->io_bp));
+		ASSERT3U(hdr->b_birth, ==, BP_GET_BIRTH(zio->io_bp));
 		ASSERT3U(hdr->b_dva.dva_word[0], ==,
 		    BP_IDENTITY(zio->io_bp)->dva_word[0]);
 		ASSERT3U(hdr->b_dva.dva_word[1], ==,
@@ -5354,7 +5354,7 @@ arc_read_done(zio_t *zio)
 			error = SET_ERROR(EIO);
 			if ((zio->io_flags & ZIO_FLAG_SPECULATIVE) == 0) {
 				spa_log_error(zio->io_spa, &acb->acb_zb,
-				    &zio->io_bp->blk_birth);
+				    BP_GET_LOGICAL_BIRTH(zio->io_bp));
 				(void) zfs_ereport_post(
 				    FM_EREPORT_ZFS_AUTHENTICATION,
 				    zio->io_spa, NULL, &acb->acb_zb, zio, 0);
@@ -5639,7 +5639,7 @@ top:
 				 */
 				rc = SET_ERROR(EIO);
 				if ((zio_flags & ZIO_FLAG_SPECULATIVE) == 0) {
-					spa_log_error(spa, zb, &hdr->b_birth);
+					spa_log_error(spa, zb, hdr->b_birth);
 					(void) zfs_ereport_post(
 					    FM_EREPORT_ZFS_AUTHENTICATION,
 					    spa, NULL, zb, NULL, 0);
@@ -5686,12 +5686,12 @@ top:
 			 * embedded data.
 			 */
 			arc_buf_hdr_t *exists = NULL;
-			hdr = arc_hdr_alloc(spa_load_guid(spa), psize, lsize,
+			hdr = arc_hdr_alloc(guid, psize, lsize,
 			    BP_IS_PROTECTED(bp), BP_GET_COMPRESS(bp), 0, type);
 
 			if (!embedded_bp) {
 				hdr->b_dva = *BP_IDENTITY(bp);
-				hdr->b_birth = BP_PHYSICAL_BIRTH(bp);
+				hdr->b_birth = BP_GET_BIRTH(bp);
 				exists = buf_hash_insert(hdr, &hash_lock);
 			}
 			if (exists != NULL) {
@@ -6557,7 +6557,7 @@ arc_write_done(zio_t *zio)
 			buf_discard_identity(hdr);
 		} else {
 			hdr->b_dva = *BP_IDENTITY(zio->io_bp);
-			hdr->b_birth = BP_PHYSICAL_BIRTH(zio->io_bp);
+			hdr->b_birth = BP_GET_BIRTH(zio->io_bp);
 		}
 	} else {
 		ASSERT(HDR_EMPTY(hdr));
diff --git a/module/zfs/bpobj.c b/module/zfs/bpobj.c
index e772caead2..96e1601c4e 100644
--- a/module/zfs/bpobj.c
+++ b/module/zfs/bpobj.c
@@ -893,7 +893,7 @@ bpobj_enqueue(bpobj_t *bpo, const blkptr_t *bp, boolean_t bp_freed,
 		 */
 		memset(&stored_bp, 0, sizeof (stored_bp));
 		stored_bp.blk_prop = bp->blk_prop;
-		stored_bp.blk_birth = bp->blk_birth;
+		BP_SET_LOGICAL_BIRTH(&stored_bp, BP_GET_LOGICAL_BIRTH(bp));
 	} else if (!BP_GET_DEDUP(bp)) {
 		/* The bpobj will compress better without the checksum */
 		memset(&stored_bp.blk_cksum, 0, sizeof (stored_bp.blk_cksum));
@@ -953,7 +953,8 @@ space_range_cb(void *arg, const blkptr_t *bp, boolean_t bp_freed, dmu_tx_t *tx)
 	(void) bp_freed, (void) tx;
 	struct space_range_arg *sra = arg;
 
-	if (bp->blk_birth > sra->mintxg && bp->blk_birth <= sra->maxtxg) {
+	if (BP_GET_LOGICAL_BIRTH(bp) > sra->mintxg &&
+	    BP_GET_LOGICAL_BIRTH(bp) <= sra->maxtxg) {
 		if (dsl_pool_sync_context(spa_get_dsl(sra->spa)))
 			sra->used += bp_get_dsize_sync(sra->spa, bp);
 		else
@@ -985,7 +986,7 @@ bpobj_space(bpobj_t *bpo, uint64_t *usedp, uint64_t *compp, uint64_t *uncompp)
 
 /*
  * Return the amount of space in the bpobj which is:
- * mintxg < blk_birth <= maxtxg
+ * mintxg < logical birth <= maxtxg
  */
 int
 bpobj_space_range(bpobj_t *bpo, uint64_t mintxg, uint64_t maxtxg,
diff --git a/module/zfs/brt.c b/module/zfs/brt.c
index 416caeb11c..0b5a09df37 100644
--- a/module/zfs/brt.c
+++ b/module/zfs/brt.c
@@ -1384,8 +1384,7 @@ brt_pending_entry_compare(const void *x1, const void *x2)
 		cmp = TREE_CMP(DVA_GET_OFFSET(&bp1->blk_dva[0]),
 		    DVA_GET_OFFSET(&bp2->blk_dva[0]));
 		if (unlikely(cmp == 0)) {
-			cmp = TREE_CMP(BP_PHYSICAL_BIRTH(bp1),
-			    BP_PHYSICAL_BIRTH(bp2));
+			cmp = TREE_CMP(BP_GET_BIRTH(bp1), BP_GET_BIRTH(bp2));
 		}
 	}
 
diff --git a/module/zfs/dbuf.c b/module/zfs/dbuf.c
index 6798fc2d5b..4e190c131e 100644
--- a/module/zfs/dbuf.c
+++ b/module/zfs/dbuf.c
@@ -1217,7 +1217,7 @@ dbuf_verify(dmu_buf_impl_t *db)
 					ASSERT0(bp->blk_pad[1]);
 					ASSERT(!BP_IS_EMBEDDED(bp));
 					ASSERT(BP_IS_HOLE(bp));
-					ASSERT0(bp->blk_phys_birth);
+					ASSERT0(BP_GET_PHYSICAL_BIRTH(bp));
 				}
 			}
 		}
@@ -1457,7 +1457,7 @@ dbuf_handle_indirect_hole(dmu_buf_impl_t *db, dnode_t *dn, blkptr_t *dbbp)
 		    dn->dn_datablksz : BP_GET_LSIZE(dbbp));
 		BP_SET_TYPE(bp, BP_GET_TYPE(dbbp));
 		BP_SET_LEVEL(bp, BP_GET_LEVEL(dbbp) - 1);
-		BP_SET_BIRTH(bp, dbbp->blk_birth, 0);
+		BP_SET_BIRTH(bp, BP_GET_LOGICAL_BIRTH(dbbp), 0);
 	}
 }
 
@@ -1486,7 +1486,7 @@ dbuf_read_hole(dmu_buf_impl_t *db, dnode_t *dn, blkptr_t *bp)
 		memset(db->db.db_data, 0, db->db.db_size);
 
 		if (bp != NULL && db->db_level > 0 && BP_IS_HOLE(bp) &&
-		    bp->blk_birth != 0) {
+		    BP_GET_LOGICAL_BIRTH(bp) != 0) {
 			dbuf_handle_indirect_hole(db, dn, bp);
 		}
 		db->db_state = DB_CACHED;
@@ -1633,7 +1633,8 @@ dbuf_read_impl(dmu_buf_impl_t *db, zio_t *zio, uint32_t flags,
 	 * If this is not true it indicates tampering and we report an error.
 	 */
 	if (db->db_objset->os_encrypted && !BP_USES_CRYPT(bpp)) {
-		spa_log_error(db->db_objset->os_spa, &zb, &bpp->blk_birth);
+		spa_log_error(db->db_objset->os_spa, &zb,
+		    BP_GET_LOGICAL_BIRTH(bpp));
 		err = SET_ERROR(EIO);
 		goto early_unlock;
 	}
@@ -2832,7 +2833,7 @@ dbuf_override_impl(dmu_buf_impl_t *db, const blkptr_t *bp, dmu_tx_t *tx)
 	dl = &dr->dt.dl;
 	dl->dr_overridden_by = *bp;
 	dl->dr_override_state = DR_OVERRIDDEN;
-	dl->dr_overridden_by.blk_birth = dr->dr_txg;
+	BP_SET_LOGICAL_BIRTH(&dl->dr_overridden_by, dr->dr_txg);
 }
 
 boolean_t
@@ -2909,7 +2910,7 @@ dmu_buf_write_embedded(dmu_buf_t *dbuf, void *data,
 	BP_SET_BYTEORDER(&dl->dr_overridden_by, byteorder);
 
 	dl->dr_override_state = DR_OVERRIDDEN;
-	dl->dr_overridden_by.blk_birth = dr->dr_txg;
+	BP_SET_LOGICAL_BIRTH(&dl->dr_overridden_by, dr->dr_txg);
 }
 
 void
@@ -4712,7 +4713,7 @@ dbuf_write_ready(zio_t *zio, arc_buf_t *buf, void *vdb)
 	dnode_diduse_space(dn, delta - zio->io_prev_space_delta);
 	zio->io_prev_space_delta = delta;
 
-	if (bp->blk_birth != 0) {
+	if (BP_GET_LOGICAL_BIRTH(bp) != 0) {
 		ASSERT((db->db_blkid != DMU_SPILL_BLKID &&
 		    BP_GET_TYPE(bp) == dn->dn_type) ||
 		    (db->db_blkid == DMU_SPILL_BLKID &&
@@ -4999,7 +5000,7 @@ dbuf_remap_impl(dnode_t *dn, blkptr_t *bp, krwlock_t *rw, dmu_tx_t *tx)
 	ASSERT(dsl_pool_sync_context(spa_get_dsl(spa)));
 
 	drica.drica_os = dn->dn_objset;
-	drica.drica_blk_birth = bp->blk_birth;
+	drica.drica_blk_birth = BP_GET_LOGICAL_BIRTH(bp);
 	drica.drica_tx = tx;
 	if (spa_remap_blkptr(spa, &bp_copy, dbuf_remap_impl_callback,
 	    &drica)) {
@@ -5014,7 +5015,8 @@ dbuf_remap_impl(dnode_t *dn, blkptr_t *bp, krwlock_t *rw, dmu_tx_t *tx)
 		if (dn->dn_objset != spa_meta_objset(spa)) {
 			dsl_dataset_t *ds = dmu_objset_ds(dn->dn_objset);
 			if (dsl_deadlist_is_open(&ds->ds_dir->dd_livelist) &&
-			    bp->blk_birth > ds->ds_dir->dd_origin_txg) {
+			    BP_GET_LOGICAL_BIRTH(bp) >
+			    ds->ds_dir->dd_origin_txg) {
 				ASSERT(!BP_IS_EMBEDDED(bp));
 				ASSERT(dsl_dir_is_clone(ds->ds_dir));
 				ASSERT(spa_feature_is_enabled(spa,
@@ -5136,7 +5138,7 @@ dbuf_write(dbuf_dirty_record_t *dr, arc_buf_t *data, dmu_tx_t *tx)
 	}
 
 	ASSERT(db->db_level == 0 || data == db->db_buf);
-	ASSERT3U(db->db_blkptr->blk_birth, <=, txg);
+	ASSERT3U(BP_GET_LOGICAL_BIRTH(db->db_blkptr), <=, txg);
 	ASSERT(pio);
 
 	SET_BOOKMARK(&zb, os->os_dsl_dataset ?
diff --git a/module/zfs/ddt.c b/module/zfs/ddt.c
index de8640e58a..4c53cb0a2f 100644
--- a/module/zfs/ddt.c
+++ b/module/zfs/ddt.c
@@ -437,7 +437,7 @@ ddt_phys_fill(ddt_phys_t *ddp, const blkptr_t *bp)
 
 	for (int d = 0; d < SPA_DVAS_PER_BP; d++)
 		ddp->ddp_dva[d] = bp->blk_dva[d];
-	ddp->ddp_phys_birth = BP_PHYSICAL_BIRTH(bp);
+	ddp->ddp_phys_birth = BP_GET_BIRTH(bp);
 }
 
 void
@@ -485,7 +485,7 @@ ddt_phys_select(const ddt_entry_t *dde, const blkptr_t *bp)
 
 	for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
 		if (DVA_EQUAL(BP_IDENTITY(bp), &ddp->ddp_dva[0]) &&
-		    BP_PHYSICAL_BIRTH(bp) == ddp->ddp_phys_birth)
+		    BP_GET_BIRTH(bp) == ddp->ddp_phys_birth)
 			return (ddp);
 	}
 	return (NULL);
diff --git a/module/zfs/dmu.c b/module/zfs/dmu.c
index 8986f55e79..b88cf447d2 100644
--- a/module/zfs/dmu.c
+++ b/module/zfs/dmu.c
@@ -1627,7 +1627,7 @@ dmu_sync_done(zio_t *zio, arc_buf_t *buf, void *varg)
 		 * it's an old style hole.
 		 */
 		if (BP_IS_HOLE(&dr->dt.dl.dr_overridden_by) &&
-		    dr->dt.dl.dr_overridden_by.blk_birth == 0)
+		    BP_GET_LOGICAL_BIRTH(&dr->dt.dl.dr_overridden_by) == 0)
 			BP_ZERO(&dr->dt.dl.dr_overridden_by);
 	} else {
 		dr->dt.dl.dr_override_state = DR_NOT_OVERRIDDEN;
@@ -1658,7 +1658,7 @@ dmu_sync_late_arrival_done(zio_t *zio)
 			blkptr_t *bp_orig __maybe_unused = &zio->io_bp_orig;
 			ASSERT(!(zio->io_flags & ZIO_FLAG_NOPWRITE));
 			ASSERT(BP_IS_HOLE(bp_orig) || !BP_EQUAL(bp, bp_orig));
-			ASSERT(zio->io_bp->blk_birth == zio->io_txg);
+			ASSERT(BP_GET_LOGICAL_BIRTH(zio->io_bp) == zio->io_txg);
 			ASSERT(zio->io_txg > spa_syncing_txg(zio->io_spa));
 			zio_free(zio->io_spa, zio->io_txg, zio->io_bp);
 		}
@@ -2285,11 +2285,11 @@ dmu_read_l0_bps(objset_t *os, uint64_t object, uint64_t offset, uint64_t length,
 		 * operation into ZIL, or it may be impossible to replay, since
 		 * the block may appear not yet allocated at that point.
 		 */
-		if (BP_PHYSICAL_BIRTH(bp) > spa_freeze_txg(os->os_spa)) {
+		if (BP_GET_BIRTH(bp) > spa_freeze_txg(os->os_spa)) {
 			error = SET_ERROR(EINVAL);
 			goto out;
 		}
-		if (BP_PHYSICAL_BIRTH(bp) > spa_last_synced_txg(os->os_spa)) {
+		if (BP_GET_BIRTH(bp) > spa_last_synced_txg(os->os_spa)) {
 			error = SET_ERROR(EAGAIN);
 			goto out;
 		}
@@ -2364,13 +2364,14 @@ dmu_brt_clone(objset_t *os, uint64_t object, uint64_t offset, uint64_t length,
 		dl->dr_brtwrite = B_TRUE;
 		dl->dr_override_state = DR_OVERRIDDEN;
 		if (BP_IS_HOLE(bp)) {
-			dl->dr_overridden_by.blk_birth = 0;
-			dl->dr_overridden_by.blk_phys_birth = 0;
+			BP_SET_LOGICAL_BIRTH(&dl->dr_overridden_by, 0);
+			BP_SET_PHYSICAL_BIRTH(&dl->dr_overridden_by, 0);
 		} else {
-			dl->dr_overridden_by.blk_birth = dr->dr_txg;
+			BP_SET_LOGICAL_BIRTH(&dl->dr_overridden_by,
+			    dr->dr_txg);
 			if (!BP_IS_EMBEDDED(bp)) {
-				dl->dr_overridden_by.blk_phys_birth =
-				    BP_PHYSICAL_BIRTH(bp);
+				BP_SET_PHYSICAL_BIRTH(&dl->dr_overridden_by,
+				    BP_GET_BIRTH(bp));
 			}
 		}
 
diff --git a/module/zfs/dmu_recv.c b/module/zfs/dmu_recv.c
index 9f1c25f866..680aed4513 100644
--- a/module/zfs/dmu_recv.c
+++ b/module/zfs/dmu_recv.c
@@ -1352,8 +1352,10 @@ corrective_read_done(zio_t *zio)
 {
 	cr_cb_data_t *data = zio->io_private;
 	/* Corruption corrected; update error log if needed */
-	if (zio->io_error == 0)
-		spa_remove_error(data->spa, &data->zb, &zio->io_bp->blk_birth);
+	if (zio->io_error == 0) {
+		spa_remove_error(data->spa, &data->zb,
+		    BP_GET_LOGICAL_BIRTH(zio->io_bp));
+	}
 	kmem_free(data, sizeof (cr_cb_data_t));
 	abd_free(zio->io_abd);
 }
@@ -1480,8 +1482,9 @@ do_corrective_recv(struct receive_writer_arg *rwa, struct drr_write *drrw,
 	}
 	rrd->abd = abd;
 
-	io = zio_rewrite(NULL, rwa->os->os_spa, bp->blk_birth, bp, abd,
-	    BP_GET_PSIZE(bp), NULL, NULL, ZIO_PRIORITY_SYNC_WRITE, flags, &zb);
+	io = zio_rewrite(NULL, rwa->os->os_spa, BP_GET_LOGICAL_BIRTH(bp), bp,
+	    abd, BP_GET_PSIZE(bp), NULL, NULL, ZIO_PRIORITY_SYNC_WRITE, flags,
+	    &zb);
 
 	ASSERT(abd_get_size(abd) == BP_GET_LSIZE(bp) ||
 	    abd_get_size(abd) == BP_GET_PSIZE(bp));
diff --git a/module/zfs/dmu_send.c b/module/zfs/dmu_send.c
index 37c68528bf..b6cc2f0a5e 100644
--- a/module/zfs/dmu_send.c
+++ b/module/zfs/dmu_send.c
@@ -619,7 +619,7 @@ dump_spill(dmu_send_cookie_t *dscp, const blkptr_t *bp, uint64_t object,
 
 	/* See comment in dump_dnode() for full details */
 	if (zfs_send_unmodified_spill_blocks &&
-	    (bp->blk_birth <= dscp->dsc_fromtxg)) {
+	    (BP_GET_LOGICAL_BIRTH(bp) <= dscp->dsc_fromtxg)) {
 		drrs->drr_flags |= DRR_SPILL_UNMODIFIED;
 	}
 
@@ -804,7 +804,7 @@ dump_dnode(dmu_send_cookie_t *dscp, const blkptr_t *bp, uint64_t object,
 	 */
 	if (zfs_send_unmodified_spill_blocks &&
 	    (dnp->dn_flags & DNODE_FLAG_SPILL_BLKPTR) &&
-	    (DN_SPILL_BLKPTR(dnp)->blk_birth <= dscp->dsc_fromtxg)) {
+	    (BP_GET_LOGICAL_BIRTH(DN_SPILL_BLKPTR(dnp)) <= dscp->dsc_fromtxg)) {
 		struct send_range record;
 		blkptr_t *bp = DN_SPILL_BLKPTR(dnp);
 
@@ -1123,7 +1123,7 @@ send_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
 	 */
 	if (sta->os->os_encrypted &&
 	    !BP_IS_HOLE(bp) && !BP_USES_CRYPT(bp)) {
-		spa_log_error(spa, zb, &bp->blk_birth);
+		spa_log_error(spa, zb, BP_GET_LOGICAL_BIRTH(bp));
 		return (SET_ERROR(EIO));
 	}
 
diff --git a/module/zfs/dmu_traverse.c b/module/zfs/dmu_traverse.c
index 809f7f6165..15cc2885e8 100644
--- a/module/zfs/dmu_traverse.c
+++ b/module/zfs/dmu_traverse.c
@@ -83,7 +83,8 @@ traverse_zil_block(zilog_t *zilog, const blkptr_t *bp, void *arg,
 	if (BP_IS_HOLE(bp))
 		return (0);
 
-	if (claim_txg == 0 && bp->blk_birth >= spa_min_claim_txg(td->td_spa))
+	if (claim_txg == 0 &&
+	    BP_GET_LOGICAL_BIRTH(bp) >= spa_min_claim_txg(td->td_spa))
 		return (-1);
 
 	SET_BOOKMARK(&zb, td->td_objset, ZB_ZIL_OBJECT, ZB_ZIL_LEVEL,
@@ -108,7 +109,7 @@ traverse_zil_record(zilog_t *zilog, const lr_t *lrc, void *arg,
 		if (BP_IS_HOLE(bp))
 			return (0);
 
-		if (claim_txg == 0 || bp->blk_birth < claim_txg)
+		if (claim_txg == 0 || BP_GET_LOGICAL_BIRTH(bp) < claim_txg)
 			return (0);
 
 		ASSERT3U(BP_GET_LSIZE(bp), !=, 0);
@@ -192,7 +193,7 @@ traverse_prefetch_metadata(traverse_data_t *td, const dnode_phys_t *dnp,
 	 */
 	if (resume_skip_check(td, dnp, zb) != RESUME_SKIP_NONE)
 		return (B_FALSE);
-	if (BP_IS_HOLE(bp) || bp->blk_birth <= td->td_min_txg)
+	if (BP_IS_HOLE(bp) || BP_GET_LOGICAL_BIRTH(bp) <= td->td_min_txg)
 		return (B_FALSE);
 	if (BP_GET_LEVEL(bp) == 0 && BP_GET_TYPE(bp) != DMU_OT_DNODE)
 		return (B_FALSE);
@@ -235,7 +236,7 @@ traverse_visitbp(traverse_data_t *td, const dnode_phys_t *dnp,
 		ASSERT(0);
 	}
 
-	if (bp->blk_birth == 0) {
+	if (BP_GET_LOGICAL_BIRTH(bp) == 0) {
 		/*
 		 * Since this block has a birth time of 0 it must be one of
 		 * two things: a hole created before the
@@ -263,7 +264,7 @@ traverse_visitbp(traverse_data_t *td, const dnode_phys_t *dnp,
 		    zb->zb_object == DMU_META_DNODE_OBJECT) &&
 		    td->td_hole_birth_enabled_txg <= td->td_min_txg)
 			return (0);
-	} else if (bp->blk_birth <= td->td_min_txg) {
+	} else if (BP_GET_LOGICAL_BIRTH(bp) <= td->td_min_txg) {
 		return (0);
 	}
 
diff --git a/module/zfs/dnode.c b/module/zfs/dnode.c
index ba28aa06a9..a703fd414f 100644
--- a/module/zfs/dnode.c
+++ b/module/zfs/dnode.c
@@ -2557,7 +2557,7 @@ dnode_next_offset_level(dnode_t *dn, int flags, uint64_t *offset,
 	}
 
 	if (db != NULL && txg != 0 && (db->db_blkptr == NULL ||
-	    db->db_blkptr->blk_birth <= txg ||
+	    BP_GET_LOGICAL_BIRTH(db->db_blkptr) <= txg ||
 	    BP_IS_HOLE(db->db_blkptr))) {
 		/*
 		 * This can only happen when we are searching up the tree
@@ -2605,7 +2605,7 @@ dnode_next_offset_level(dnode_t *dn, int flags, uint64_t *offset,
 		    i >= 0 && i < epb; i += inc) {
 			if (BP_GET_FILL(&bp[i]) >= minfill &&
 			    BP_GET_FILL(&bp[i]) <= maxfill &&
-			    (hole || bp[i].blk_birth > txg))
+			    (hole || BP_GET_LOGICAL_BIRTH(&bp[i]) > txg))
 				break;
 			if (inc > 0 || *offset > 0)
 				*offset += inc;
diff --git a/module/zfs/dsl_bookmark.c b/module/zfs/dsl_bookmark.c
index 4faefecbad..5fd8bc2a26 100644
--- a/module/zfs/dsl_bookmark.c
+++ b/module/zfs/dsl_bookmark.c
@@ -1520,7 +1520,8 @@ dsl_bookmark_block_killed(dsl_dataset_t *ds, const blkptr_t *bp, dmu_tx_t *tx)
 		 * If the block was live (referenced) at the time of this
 		 * bookmark, add its space to the bookmark's FBN.
 		 */
-		if (bp->blk_birth <= dbn->dbn_phys.zbm_creation_txg &&
+		if (BP_GET_LOGICAL_BIRTH(bp) <=
+		    dbn->dbn_phys.zbm_creation_txg &&
 		    (dbn->dbn_phys.zbm_flags & ZBM_FLAG_HAS_FBN)) {
 			mutex_enter(&dbn->dbn_lock);
 			dbn->dbn_phys.zbm_referenced_freed_before_next_snap +=
diff --git a/module/zfs/dsl_dataset.c b/module/zfs/dsl_dataset.c
index 62a1649d37..b4de0e7ff0 100644
--- a/module/zfs/dsl_dataset.c
+++ b/module/zfs/dsl_dataset.c
@@ -156,7 +156,8 @@ dsl_dataset_block_born(dsl_dataset_t *ds, const blkptr_t *bp, dmu_tx_t *tx)
 		return;
 	}
 
-	ASSERT3U(bp->blk_birth, >, dsl_dataset_phys(ds)->ds_prev_snap_txg);
+	ASSERT3U(BP_GET_LOGICAL_BIRTH(bp), >,
+	    dsl_dataset_phys(ds)->ds_prev_snap_txg);
 	dmu_buf_will_dirty(ds->ds_dbuf, tx);
 	mutex_enter(&ds->ds_lock);
 	delta = parent_delta(ds, used);
@@ -190,7 +191,7 @@ dsl_dataset_block_born(dsl_dataset_t *ds, const blkptr_t *bp, dmu_tx_t *tx)
 	 * they do not need to be freed.
 	 */
 	if (dsl_deadlist_is_open(&ds->ds_dir->dd_livelist) &&
-	    bp->blk_birth > ds->ds_dir->dd_origin_txg &&
+	    BP_GET_LOGICAL_BIRTH(bp) > ds->ds_dir->dd_origin_txg &&
 	    !(BP_IS_EMBEDDED(bp))) {
 		ASSERT(dsl_dir_is_clone(ds->ds_dir));
 		ASSERT(spa_feature_is_enabled(spa,
@@ -236,7 +237,7 @@ dsl_dataset_block_remapped(dsl_dataset_t *ds, uint64_t vdev, uint64_t offset,
 		mutex_exit(&ds->ds_remap_deadlist_lock);
 
 		BP_ZERO(&fakebp);
-		fakebp.blk_birth = birth;
+		BP_SET_LOGICAL_BIRTH(&fakebp, birth);
 		DVA_SET_VDEV(dva, vdev);
 		DVA_SET_OFFSET(dva, offset);
 		DVA_SET_ASIZE(dva, size);
@@ -259,7 +260,7 @@ dsl_dataset_block_kill(dsl_dataset_t *ds, const blkptr_t *bp, dmu_tx_t *tx,
 		return (0);
 
 	ASSERT(dmu_tx_is_syncing(tx));
-	ASSERT(bp->blk_birth <= tx->tx_txg);
+	ASSERT(BP_GET_LOGICAL_BIRTH(bp) <= tx->tx_txg);
 
 	if (ds == NULL) {
 		dsl_free(tx->tx_pool, tx->tx_txg, bp);
@@ -277,7 +278,7 @@ dsl_dataset_block_kill(dsl_dataset_t *ds, const blkptr_t *bp, dmu_tx_t *tx,
 	 * they do not need to be freed.
 	 */
 	if (dsl_deadlist_is_open(&ds->ds_dir->dd_livelist) &&
-	    bp->blk_birth > ds->ds_dir->dd_origin_txg &&
+	    BP_GET_LOGICAL_BIRTH(bp) > ds->ds_dir->dd_origin_txg &&
 	    !(BP_IS_EMBEDDED(bp))) {
 		ASSERT(dsl_dir_is_clone(ds->ds_dir));
 		ASSERT(spa_feature_is_enabled(spa,
@@ -285,7 +286,7 @@ dsl_dataset_block_kill(dsl_dataset_t *ds, const blkptr_t *bp, dmu_tx_t *tx,
 		bplist_append(&ds->ds_dir->dd_pending_frees, bp);
 	}
 
-	if (bp->blk_birth > dsl_dataset_phys(ds)->ds_prev_snap_txg) {
+	if (BP_GET_LOGICAL_BIRTH(bp) > dsl_dataset_phys(ds)->ds_prev_snap_txg) {
 		int64_t delta;
 
 		dprintf_bp(bp, "freeing ds=%llu", (u_longlong_t)ds->ds_object);
@@ -317,16 +318,16 @@ dsl_dataset_block_kill(dsl_dataset_t *ds, const blkptr_t *bp, dmu_tx_t *tx,
 		ASSERT3U(ds->ds_prev->ds_object, ==,
 		    dsl_dataset_phys(ds)->ds_prev_snap_obj);
 		ASSERT(dsl_dataset_phys(ds->ds_prev)->ds_num_children > 0);
-		/* if (bp->blk_birth > prev prev snap txg) prev unique += bs */
+		/* if (logical birth > prev prev snap txg) prev unique += bs */
 		if (dsl_dataset_phys(ds->ds_prev)->ds_next_snap_obj ==
-		    ds->ds_object && bp->blk_birth >
+		    ds->ds_object && BP_GET_LOGICAL_BIRTH(bp) >
 		    dsl_dataset_phys(ds->ds_prev)->ds_prev_snap_txg) {
 			dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx);
 			mutex_enter(&ds->ds_prev->ds_lock);
 			dsl_dataset_phys(ds->ds_prev)->ds_unique_bytes += used;
 			mutex_exit(&ds->ds_prev->ds_lock);
 		}
-		if (bp->blk_birth > ds->ds_dir->dd_origin_txg) {
+		if (BP_GET_LOGICAL_BIRTH(bp) > ds->ds_dir->dd_origin_txg) {
 			dsl_dir_transfer_space(ds->ds_dir, used,
 			    DD_USED_HEAD, DD_USED_SNAP, tx);
 		}
@@ -2895,7 +2896,7 @@ dsl_dataset_modified_since_snap(dsl_dataset_t *ds, dsl_dataset_t *snap)
 	if (snap == NULL)
 		return (B_FALSE);
 	rrw_enter(&ds->ds_bp_rwlock, RW_READER, FTAG);
-	birth = dsl_dataset_get_blkptr(ds)->blk_birth;
+	birth = BP_GET_LOGICAL_BIRTH(dsl_dataset_get_blkptr(ds));
 	rrw_exit(&ds->ds_bp_rwlock, FTAG);
 	if (birth > dsl_dataset_phys(snap)->ds_creation_txg) {
 		objset_t *os, *os_snap;
diff --git a/module/zfs/dsl_deadlist.c b/module/zfs/dsl_deadlist.c
index e6c8d4be13..eff1f7de77 100644
--- a/module/zfs/dsl_deadlist.c
+++ b/module/zfs/dsl_deadlist.c
@@ -474,7 +474,7 @@ dsl_deadlist_insert(dsl_deadlist_t *dl, const blkptr_t *bp, boolean_t bp_freed,
 	dl->dl_phys->dl_comp += sign * BP_GET_PSIZE(bp);
 	dl->dl_phys->dl_uncomp += sign * BP_GET_UCSIZE(bp);
 
-	dle_tofind.dle_mintxg = bp->blk_birth;
+	dle_tofind.dle_mintxg = BP_GET_LOGICAL_BIRTH(bp);
 	dle = avl_find(&dl->dl_tree, &dle_tofind, &where);
 	if (dle == NULL)
 		dle = avl_nearest(&dl->dl_tree, where, AVL_BEFORE);
@@ -483,7 +483,7 @@ dsl_deadlist_insert(dsl_deadlist_t *dl, const blkptr_t *bp, boolean_t bp_freed,
 
 	if (dle == NULL) {
 		zfs_panic_recover("blkptr at %p has invalid BLK_BIRTH %llu",
-		    bp, (longlong_t)bp->blk_birth);
+		    bp, (longlong_t)BP_GET_LOGICAL_BIRTH(bp));
 		dle = avl_first(&dl->dl_tree);
 	}
 
@@ -1039,8 +1039,7 @@ dsl_livelist_iterate(void *arg, const blkptr_t *bp, boolean_t bp_freed,
 		ASSERT3U(BP_GET_PSIZE(bp), ==, BP_GET_PSIZE(&found->le_bp));
 		ASSERT3U(BP_GET_CHECKSUM(bp), ==,
 		    BP_GET_CHECKSUM(&found->le_bp));
-		ASSERT3U(BP_PHYSICAL_BIRTH(bp), ==,
-		    BP_PHYSICAL_BIRTH(&found->le_bp));
+		ASSERT3U(BP_GET_BIRTH(bp), ==, BP_GET_BIRTH(&found->le_bp));
 	}
 	if (bp_freed) {
 		if (found == NULL) {
diff --git a/module/zfs/dsl_destroy.c b/module/zfs/dsl_destroy.c
index d9d88a981e..d4a6e5b6e9 100644
--- a/module/zfs/dsl_destroy.c
+++ b/module/zfs/dsl_destroy.c
@@ -132,10 +132,11 @@ process_old_cb(void *arg, const blkptr_t *bp, boolean_t bp_freed, dmu_tx_t *tx)
 
 	ASSERT(!BP_IS_HOLE(bp));
 
-	if (bp->blk_birth <= dsl_dataset_phys(poa->ds)->ds_prev_snap_txg) {
+	if (BP_GET_LOGICAL_BIRTH(bp) <=
+	    dsl_dataset_phys(poa->ds)->ds_prev_snap_txg) {
 		dsl_deadlist_insert(&poa->ds->ds_deadlist, bp, bp_freed, tx);
 		if (poa->ds_prev && !poa->after_branch_point &&
-		    bp->blk_birth >
+		    BP_GET_LOGICAL_BIRTH(bp) >
 		    dsl_dataset_phys(poa->ds_prev)->ds_prev_snap_txg) {
 			dsl_dataset_phys(poa->ds_prev)->ds_unique_bytes +=
 			    bp_get_dsize_sync(dp->dp_spa, bp);
@@ -313,7 +314,8 @@ dsl_destroy_snapshot_sync_impl(dsl_dataset_t *ds, boolean_t defer, dmu_tx_t *tx)
 
 	ASSERT(RRW_WRITE_HELD(&dp->dp_config_rwlock));
 	rrw_enter(&ds->ds_bp_rwlock, RW_READER, FTAG);
-	ASSERT3U(dsl_dataset_phys(ds)->ds_bp.blk_birth, <=, tx->tx_txg);
+	ASSERT3U(BP_GET_LOGICAL_BIRTH(&dsl_dataset_phys(ds)->ds_bp), <=,
+	    tx->tx_txg);
 	rrw_exit(&ds->ds_bp_rwlock, FTAG);
 	ASSERT(zfs_refcount_is_zero(&ds->ds_longholds));
 
@@ -727,7 +729,7 @@ kill_blkptr(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
 		dsl_free(ka->tx->tx_pool, ka->tx->tx_txg, bp);
 	} else {
 		ASSERT(zilog == NULL);
-		ASSERT3U(bp->blk_birth, >,
+		ASSERT3U(BP_GET_LOGICAL_BIRTH(bp), >,
 		    dsl_dataset_phys(ka->ds)->ds_prev_snap_txg);
 		(void) dsl_dataset_block_kill(ka->ds, bp, tx, B_FALSE);
 	}
@@ -1017,7 +1019,8 @@ dsl_destroy_head_sync_impl(dsl_dataset_t *ds, dmu_tx_t *tx)
 	ASSERT(ds->ds_prev == NULL ||
 	    dsl_dataset_phys(ds->ds_prev)->ds_next_snap_obj != ds->ds_object);
 	rrw_enter(&ds->ds_bp_rwlock, RW_READER, FTAG);
-	ASSERT3U(dsl_dataset_phys(ds)->ds_bp.blk_birth, <=, tx->tx_txg);
+	ASSERT3U(BP_GET_LOGICAL_BIRTH(&dsl_dataset_phys(ds)->ds_bp), <=,
+	    tx->tx_txg);
 	rrw_exit(&ds->ds_bp_rwlock, FTAG);
 	ASSERT(RRW_WRITE_HELD(&dp->dp_config_rwlock));
 
diff --git a/module/zfs/dsl_pool.c b/module/zfs/dsl_pool.c
index 370c6a010d..342ec5c15c 100644
--- a/module/zfs/dsl_pool.c
+++ b/module/zfs/dsl_pool.c
@@ -1047,7 +1047,7 @@ upgrade_clones_cb(dsl_pool_t *dp, dsl_dataset_t *hds, void *arg)
 		 * will be wrong.
 		 */
 		rrw_enter(&ds->ds_bp_rwlock, RW_READER, FTAG);
-		ASSERT0(dsl_dataset_phys(prev)->ds_bp.blk_birth);
+		ASSERT0(BP_GET_LOGICAL_BIRTH(&dsl_dataset_phys(prev)->ds_bp));
 		rrw_exit(&ds->ds_bp_rwlock, FTAG);
 
 		/* The origin doesn't get attached to itself */
diff --git a/module/zfs/dsl_scan.c b/module/zfs/dsl_scan.c
index 060a5cc36d..55e89b89f0 100644
--- a/module/zfs/dsl_scan.c
+++ b/module/zfs/dsl_scan.c
@@ -429,8 +429,8 @@ sio2bp(const scan_io_t *sio, blkptr_t *bp)
 {
 	memset(bp, 0, sizeof (*bp));
 	bp->blk_prop = sio->sio_blk_prop;
-	bp->blk_phys_birth = sio->sio_phys_birth;
-	bp->blk_birth = sio->sio_birth;
+	BP_SET_PHYSICAL_BIRTH(bp, sio->sio_phys_birth);
+	BP_SET_LOGICAL_BIRTH(bp, sio->sio_birth);
 	bp->blk_fill = 1;	/* we always only work with data pointers */
 	bp->blk_cksum = sio->sio_cksum;
 
@@ -444,8 +444,8 @@ static inline void
 bp2sio(const blkptr_t *bp, scan_io_t *sio, int dva_i)
 {
 	sio->sio_blk_prop = bp->blk_prop;
-	sio->sio_phys_birth = bp->blk_phys_birth;
-	sio->sio_birth = bp->blk_birth;
+	sio->sio_phys_birth = BP_GET_PHYSICAL_BIRTH(bp);
+	sio->sio_birth = BP_GET_LOGICAL_BIRTH(bp);
 	sio->sio_cksum = bp->blk_cksum;
 	sio->sio_nr_dvas = BP_GET_NDVAS(bp);
 
@@ -1721,7 +1721,8 @@ dsl_scan_zil_block(zilog_t *zilog, const blkptr_t *bp, void *arg,
 	zbookmark_phys_t zb;
 
 	ASSERT(!BP_IS_REDACTED(bp));
-	if (BP_IS_HOLE(bp) || bp->blk_birth <= scn->scn_phys.scn_cur_min_txg)
+	if (BP_IS_HOLE(bp) ||
+	    BP_GET_LOGICAL_BIRTH(bp) <= scn->scn_phys.scn_cur_min_txg)
 		return (0);
 
 	/*
@@ -1730,7 +1731,8 @@ dsl_scan_zil_block(zilog_t *zilog, const blkptr_t *bp, void *arg,
 	 * (on-disk) even if it hasn't been claimed (even though for
 	 * scrub there's nothing to do to it).
 	 */
-	if (claim_txg == 0 && bp->blk_birth >= spa_min_claim_txg(dp->dp_spa))
+	if (claim_txg == 0 &&
+	    BP_GET_LOGICAL_BIRTH(bp) >= spa_min_claim_txg(dp->dp_spa))
 		return (0);
 
 	SET_BOOKMARK(&zb, zh->zh_log.blk_cksum.zc_word[ZIL_ZC_OBJSET],
@@ -1756,7 +1758,7 @@ dsl_scan_zil_record(zilog_t *zilog, const lr_t *lrc, void *arg,
 
 		ASSERT(!BP_IS_REDACTED(bp));
 		if (BP_IS_HOLE(bp) ||
-		    bp->blk_birth <= scn->scn_phys.scn_cur_min_txg)
+		    BP_GET_LOGICAL_BIRTH(bp) <= scn->scn_phys.scn_cur_min_txg)
 			return (0);
 
 		/*
@@ -1764,7 +1766,7 @@ dsl_scan_zil_record(zilog_t *zilog, const lr_t *lrc, void *arg,
 		 * already txg sync'ed (but this log block contains
 		 * other records that are not synced)
 		 */
-		if (claim_txg == 0 || bp->blk_birth < claim_txg)
+		if (claim_txg == 0 || BP_GET_LOGICAL_BIRTH(bp) < claim_txg)
 			return (0);
 
 		ASSERT3U(BP_GET_LSIZE(bp), !=, 0);
@@ -1903,7 +1905,8 @@ dsl_scan_prefetch(scan_prefetch_ctx_t *spc, blkptr_t *bp, zbookmark_phys_t *zb)
 	if (zfs_no_scrub_prefetch || BP_IS_REDACTED(bp))
 		return;
 
-	if (BP_IS_HOLE(bp) || bp->blk_birth <= scn->scn_phys.scn_cur_min_txg ||
+	if (BP_IS_HOLE(bp) ||
+	    BP_GET_LOGICAL_BIRTH(bp) <= scn->scn_phys.scn_cur_min_txg ||
 	    (BP_GET_LEVEL(bp) == 0 && BP_GET_TYPE(bp) != DMU_OT_DNODE &&
 	    BP_GET_TYPE(bp) != DMU_OT_OBJSET))
 		return;
@@ -2174,7 +2177,7 @@ dsl_scan_recurse(dsl_scan_t *scn, dsl_dataset_t *ds, dmu_objset_type_t ostype,
 	if (dnp != NULL &&
 	    dnp->dn_bonuslen > DN_MAX_BONUS_LEN(dnp)) {
 		scn->scn_phys.scn_errors++;
-		spa_log_error(spa, zb, &bp->blk_birth);
+		spa_log_error(spa, zb, BP_GET_LOGICAL_BIRTH(bp));
 		return (SET_ERROR(EINVAL));
 	}
 
@@ -2270,7 +2273,7 @@ dsl_scan_recurse(dsl_scan_t *scn, dsl_dataset_t *ds, dmu_objset_type_t ostype,
 		 * by arc_read() for the cases above.
 		 */
 		scn->scn_phys.scn_errors++;
-		spa_log_error(spa, zb, &bp->blk_birth);
+		spa_log_error(spa, zb, BP_GET_LOGICAL_BIRTH(bp));
 		return (SET_ERROR(EINVAL));
 	}
 
@@ -2347,7 +2350,7 @@ dsl_scan_visitbp(const blkptr_t *bp, const zbookmark_phys_t *zb,
 	if (f != SPA_FEATURE_NONE)
 		ASSERT(dsl_dataset_feature_is_active(ds, f));
 
-	if (bp->blk_birth <= scn->scn_phys.scn_cur_min_txg) {
+	if (BP_GET_LOGICAL_BIRTH(bp) <= scn->scn_phys.scn_cur_min_txg) {
 		scn->scn_lt_min_this_txg++;
 		return;
 	}
@@ -2373,7 +2376,7 @@ dsl_scan_visitbp(const blkptr_t *bp, const zbookmark_phys_t *zb,
 	 * Don't scan it now unless we need to because something
 	 * under it was modified.
 	 */
-	if (BP_PHYSICAL_BIRTH(bp) > scn->scn_phys.scn_cur_max_txg) {
+	if (BP_GET_BIRTH(bp) > scn->scn_phys.scn_cur_max_txg) {
 		scn->scn_gt_max_this_txg++;
 		return;
 	}
@@ -4714,7 +4717,7 @@ dsl_scan_scrub_cb(dsl_pool_t *dp,
 {
 	dsl_scan_t *scn = dp->dp_scan;
 	spa_t *spa = dp->dp_spa;
-	uint64_t phys_birth = BP_PHYSICAL_BIRTH(bp);
+	uint64_t phys_birth = BP_GET_BIRTH(bp);
 	size_t psize = BP_GET_PSIZE(bp);
 	boolean_t needs_io = B_FALSE;
 	int zio_flags = ZIO_FLAG_SCAN_THREAD | ZIO_FLAG_RAW | ZIO_FLAG_CANFAIL;
diff --git a/module/zfs/metaslab.c b/module/zfs/metaslab.c
index 7237fa8eeb..c4aa98ced4 100644
--- a/module/zfs/metaslab.c
+++ b/module/zfs/metaslab.c
@@ -5495,8 +5495,9 @@ remap_blkptr_cb(uint64_t inner_offset, vdev_t *vd, uint64_t offset,
 	vdev_t *oldvd = vdev_lookup_top(vd->vdev_spa,
 	    DVA_GET_VDEV(&bp->blk_dva[0]));
 	vdev_indirect_births_t *vib = oldvd->vdev_indirect_births;
-	bp->blk_phys_birth = vdev_indirect_births_physbirth(vib,
+	uint64_t physical_birth = vdev_indirect_births_physbirth(vib,
 	    DVA_GET_OFFSET(&bp->blk_dva[0]), DVA_GET_ASIZE(&bp->blk_dva[0]));
+	BP_SET_PHYSICAL_BIRTH(bp, physical_birth);
 
 	DVA_SET_VDEV(&bp->blk_dva[0], vd->vdev_id);
 	DVA_SET_OFFSET(&bp->blk_dva[0], offset);
@@ -5845,8 +5846,8 @@ metaslab_alloc(spa_t *spa, metaslab_class_t *mc, uint64_t psize, blkptr_t *bp,
 	dva_t *hintdva = (hintbp != NULL) ? hintbp->blk_dva : NULL;
 	int error = 0;
 
-	ASSERT(bp->blk_birth == 0);
-	ASSERT(BP_PHYSICAL_BIRTH(bp) == 0);
+	ASSERT0(BP_GET_LOGICAL_BIRTH(bp));
+	ASSERT0(BP_GET_PHYSICAL_BIRTH(bp));
 
 	spa_config_enter(spa, SCL_ALLOC, FTAG, RW_READER);
 
@@ -5900,7 +5901,7 @@ metaslab_free(spa_t *spa, const blkptr_t *bp, uint64_t txg, boolean_t now)
 	int ndvas = BP_GET_NDVAS(bp);
 
 	ASSERT(!BP_IS_HOLE(bp));
-	ASSERT(!now || bp->blk_birth >= spa_syncing_txg(spa));
+	ASSERT(!now || BP_GET_LOGICAL_BIRTH(bp) >= spa_syncing_txg(spa));
 
 	/*
 	 * If we have a checkpoint for the pool we need to make sure that
@@ -5918,7 +5919,7 @@ metaslab_free(spa_t *spa, const blkptr_t *bp, uint64_t txg, boolean_t now)
 	 * normally as they will be referenced by the checkpointed uberblock.
 	 */
 	boolean_t checkpoint = B_FALSE;
-	if (bp->blk_birth <= spa->spa_checkpoint_txg &&
+	if (BP_GET_LOGICAL_BIRTH(bp) <= spa->spa_checkpoint_txg &&
 	    spa_syncing_txg(spa) > spa->spa_checkpoint_txg) {
 		/*
 		 * At this point, if the block is part of the checkpoint
diff --git a/module/zfs/spa.c b/module/zfs/spa.c
index b144d06529..30c528a530 100644
--- a/module/zfs/spa.c
+++ b/module/zfs/spa.c
@@ -2655,8 +2655,8 @@ spa_claim_notify(zio_t *zio)
 		return;
 
 	mutex_enter(&spa->spa_props_lock);	/* any mutex will do */
-	if (spa->spa_claim_max_txg < zio->io_bp->blk_birth)
-		spa->spa_claim_max_txg = zio->io_bp->blk_birth;
+	if (spa->spa_claim_max_txg < BP_GET_LOGICAL_BIRTH(zio->io_bp))
+		spa->spa_claim_max_txg = BP_GET_LOGICAL_BIRTH(zio->io_bp);
 	mutex_exit(&spa->spa_props_lock);
 }
 
@@ -6266,7 +6266,8 @@ spa_create(const char *pool, nvlist_t *nvroot, nvlist_t *props,
 	nvlist_t *nvl;
 
 	if (props == NULL ||
-	    nvlist_lookup_string(props, "tname", &poolname) != 0)
+	    nvlist_lookup_string(props,
+	    zpool_prop_to_name(ZPOOL_PROP_TNAME), &poolname) != 0)
 		poolname = (char *)pool;
 
 	/*
@@ -9801,7 +9802,7 @@ spa_sync_iterate_to_convergence(spa_t *spa, dmu_tx_t *tx)
 		 * don't want to rely on that here).
 		 */
 		if (pass == 1 &&
-		    spa->spa_uberblock.ub_rootbp.blk_birth < txg &&
+		    BP_GET_LOGICAL_BIRTH(&spa->spa_uberblock.ub_rootbp) < txg &&
 		    !dmu_objset_is_dirty(mos, txg)) {
 			/*
 			 * Nothing changed on the first pass, therefore this
diff --git a/module/zfs/spa_errlog.c b/module/zfs/spa_errlog.c
index 244b4d2642..62d7b4fa2d 100644
--- a/module/zfs/spa_errlog.c
+++ b/module/zfs/spa_errlog.c
@@ -180,7 +180,7 @@ static int get_head_ds(spa_t *spa, uint64_t dsobj, uint64_t *head_ds)
  * during spa_errlog_sync().
  */
 void
-spa_log_error(spa_t *spa, const zbookmark_phys_t *zb, const uint64_t *birth)
+spa_log_error(spa_t *spa, const zbookmark_phys_t *zb, const uint64_t birth)
 {
 	spa_error_entry_t search;
 	spa_error_entry_t *new;
@@ -223,13 +223,7 @@ spa_log_error(spa_t *spa, const zbookmark_phys_t *zb, const uint64_t *birth)
 		new->se_zep.zb_object = zb->zb_object;
 		new->se_zep.zb_level = zb->zb_level;
 		new->se_zep.zb_blkid = zb->zb_blkid;
-
-		/*
-		 * birth may end up being NULL, e.g. in zio_done(). We
-		 * will handle this in process_error_block().
-		 */
-		if (birth != NULL)
-			new->se_zep.zb_birth = *birth;
+		new->se_zep.zb_birth = birth;
 	}
 
 	avl_insert(tree, new, where);
@@ -258,7 +252,7 @@ find_birth_txg(dsl_dataset_t *ds, zbookmark_err_phys_t *zep,
 	if (error == 0 && BP_IS_HOLE(&bp))
 		error = SET_ERROR(ENOENT);
 
-	*birth_txg = bp.blk_birth;
+	*birth_txg = BP_GET_LOGICAL_BIRTH(&bp);
 	rw_exit(&dn->dn_struct_rwlock);
 	dnode_rele(dn, FTAG);
 	return (error);
@@ -535,7 +529,7 @@ process_error_block(spa_t *spa, uint64_t head_ds, zbookmark_err_phys_t *zep,
 		 */
 		zbookmark_phys_t zb;
 		zep_to_zb(head_ds, zep, &zb);
-		spa_remove_error(spa, &zb, &zep->zb_birth);
+		spa_remove_error(spa, &zb, zep->zb_birth);
 	}
 
 	return (error);
@@ -563,7 +557,7 @@ spa_get_last_errlog_size(spa_t *spa)
  */
 static void
 spa_add_healed_error(spa_t *spa, uint64_t obj, zbookmark_phys_t *healed_zb,
-    const uint64_t *birth)
+    const uint64_t birth)
 {
 	char name[NAME_MAX_LEN];
 
@@ -618,11 +612,7 @@ spa_add_healed_error(spa_t *spa, uint64_t obj, zbookmark_phys_t *healed_zb,
 	healed_zep.zb_object = healed_zb->zb_object;
 	healed_zep.zb_level = healed_zb->zb_level;
 	healed_zep.zb_blkid = healed_zb->zb_blkid;
-
-	if (birth != NULL)
-		healed_zep.zb_birth = *birth;
-	else
-		healed_zep.zb_birth = 0;
+	healed_zep.zb_birth = birth;
 
 	errphys_to_name(&healed_zep, name, sizeof (name));
 
@@ -742,7 +732,7 @@ spa_remove_healed_errors(spa_t *spa, avl_tree_t *s, avl_tree_t *l, dmu_tx_t *tx)
  * later in spa_remove_healed_errors().
  */
 void
-spa_remove_error(spa_t *spa, zbookmark_phys_t *zb, const uint64_t *birth)
+spa_remove_error(spa_t *spa, zbookmark_phys_t *zb, uint64_t birth)
 {
 	spa_add_healed_error(spa, spa->spa_errlog_last, zb, birth);
 	spa_add_healed_error(spa, spa->spa_errlog_scrub, zb, birth);
@@ -890,7 +880,7 @@ sync_upgrade_errlog(spa_t *spa, uint64_t spa_err_obj, uint64_t *newobj,
 		if (error == EACCES)
 			error = 0;
 		else if (!error)
-			zep.zb_birth = bp.blk_birth;
+			zep.zb_birth = BP_GET_LOGICAL_BIRTH(&bp);
 
 		rw_exit(&dn->dn_struct_rwlock);
 		dnode_rele(dn, FTAG);
diff --git a/module/zfs/spa_log_spacemap.c b/module/zfs/spa_log_spacemap.c
index 873089a53e..32158e8c59 100644
--- a/module/zfs/spa_log_spacemap.c
+++ b/module/zfs/spa_log_spacemap.c
@@ -783,7 +783,7 @@ spa_flush_metaslabs(spa_t *spa, dmu_tx_t *tx)
 	 * request of flushing everything before we attempt to return
 	 * immediately.
 	 */
-	if (spa->spa_uberblock.ub_rootbp.blk_birth < txg &&
+	if (BP_GET_LOGICAL_BIRTH(&spa->spa_uberblock.ub_rootbp) < txg &&
 	    !dmu_objset_is_dirty(spa_meta_objset(spa), txg) &&
 	    !spa_flush_all_logs_requested(spa))
 		return;
diff --git a/module/zfs/uberblock.c b/module/zfs/uberblock.c
index 1921be1076..22ee8036c4 100644
--- a/module/zfs/uberblock.c
+++ b/module/zfs/uberblock.c
@@ -70,5 +70,5 @@ uberblock_update(uberblock_t *ub, vdev_t *rvd, uint64_t txg, uint64_t mmp_delay)
 	}
 	ub->ub_checkpoint_txg = 0;
 
-	return (ub->ub_rootbp.blk_birth == txg);
+	return (BP_GET_LOGICAL_BIRTH(&ub->ub_rootbp) == txg);
 }
diff --git a/module/zfs/vdev_mirror.c b/module/zfs/vdev_mirror.c
index f9a01c9f53..102eacb033 100644
--- a/module/zfs/vdev_mirror.c
+++ b/module/zfs/vdev_mirror.c
@@ -531,7 +531,7 @@ vdev_mirror_child_select(zio_t *zio)
 	uint64_t txg = zio->io_txg;
 	int c, lowest_load;
 
-	ASSERT(zio->io_bp == NULL || BP_PHYSICAL_BIRTH(zio->io_bp) == txg);
+	ASSERT(zio->io_bp == NULL || BP_GET_BIRTH(zio->io_bp) == txg);
 
 	lowest_load = INT_MAX;
 	mm->mm_preferred_cnt = 0;
diff --git a/module/zfs/vdev_raidz.c b/module/zfs/vdev_raidz.c
index 9d0b8763f1..b03331ec69 100644
--- a/module/zfs/vdev_raidz.c
+++ b/module/zfs/vdev_raidz.c
@@ -2190,12 +2190,11 @@ vdev_raidz_close(vdev_t *vd)
 
 /*
  * Return the logical width to use, given the txg in which the allocation
- * happened.  Note that BP_PHYSICAL_BIRTH() is usually the txg in which the
+ * happened.  Note that BP_GET_BIRTH() is usually the txg in which the
  * BP was allocated.  Remapped BP's (that were relocated due to device
- * removal, see remap_blkptr_cb()), will have a more recent
- * BP_PHYSICAL_BIRTH() which reflects when the BP was relocated, but we can
- * ignore these because they can't be on RAIDZ (device removal doesn't
- * support RAIDZ).
+ * removal, see remap_blkptr_cb()), will have a more recent physical birth
+ * which reflects when the BP was relocated, but we can ignore these because
+ * they can't be on RAIDZ (device removal doesn't support RAIDZ).
  */
 static uint64_t
 vdev_raidz_get_logical_width(vdev_raidz_t *vdrz, uint64_t txg)
@@ -2295,7 +2294,7 @@ vdev_raidz_io_verify(zio_t *zio, raidz_map_t *rm, raidz_row_t *rr, int col)
 	logical_rs.rs_start = rr->rr_offset;
 	logical_rs.rs_end = logical_rs.rs_start +
 	    vdev_raidz_asize(zio->io_vd, rr->rr_size,
-	    BP_PHYSICAL_BIRTH(zio->io_bp));
+	    BP_GET_BIRTH(zio->io_bp));
 
 	raidz_col_t *rc = &rr->rr_col[col];
 	vdev_t *cvd = zio->io_vd->vdev_child[rc->rc_devidx];
@@ -2518,7 +2517,7 @@ vdev_raidz_io_start(zio_t *zio)
 	raidz_map_t *rm;
 
 	uint64_t logical_width = vdev_raidz_get_logical_width(vdrz,
-	    BP_PHYSICAL_BIRTH(zio->io_bp));
+	    BP_GET_BIRTH(zio->io_bp));
 	if (logical_width != vdrz->vd_physical_width) {
 		zfs_locked_range_t *lr = NULL;
 		uint64_t synced_offset = UINT64_MAX;
diff --git a/module/zfs/zil.c b/module/zfs/zil.c
index e549e1895f..1af357c580 100644
--- a/module/zfs/zil.c
+++ b/module/zfs/zil.c
@@ -557,7 +557,7 @@ zil_clear_log_block(zilog_t *zilog, const blkptr_t *bp, void *tx,
 	 * that we rewind to is invalid. Thus, we return -1 so
 	 * zil_parse() doesn't attempt to read it.
 	 */
-	if (bp->blk_birth >= first_txg)
+	if (BP_GET_LOGICAL_BIRTH(bp) >= first_txg)
 		return (-1);
 
 	if (zil_bp_tree_add(zilog, bp) != 0)
@@ -583,7 +583,7 @@ zil_claim_log_block(zilog_t *zilog, const blkptr_t *bp, void *tx,
 	 * Claim log block if not already committed and not already claimed.
 	 * If tx == NULL, just verify that the block is claimable.
 	 */
-	if (BP_IS_HOLE(bp) || bp->blk_birth < first_txg ||
+	if (BP_IS_HOLE(bp) || BP_GET_LOGICAL_BIRTH(bp) < first_txg ||
 	    zil_bp_tree_add(zilog, bp) != 0)
 		return (0);
 
@@ -608,7 +608,7 @@ zil_claim_write(zilog_t *zilog, const lr_t *lrc, void *tx, uint64_t first_txg)
 	 * waited for all writes to be stable first), so it is semantically
 	 * correct to declare this the end of the log.
 	 */
-	if (lr->lr_blkptr.blk_birth >= first_txg) {
+	if (BP_GET_LOGICAL_BIRTH(&lr->lr_blkptr) >= first_txg) {
 		error = zil_read_log_data(zilog, lr, NULL);
 		if (error != 0)
 			return (error);
@@ -655,7 +655,7 @@ zil_claim_clone_range(zilog_t *zilog, const lr_t *lrc, void *tx,
 		 * just in case lets be safe and just stop here now instead of
 		 * corrupting the pool.
 		 */
-		if (BP_PHYSICAL_BIRTH(bp) >= first_txg)
+		if (BP_GET_BIRTH(bp) >= first_txg)
 			return (SET_ERROR(ENOENT));
 
 		/*
@@ -710,8 +710,8 @@ zil_free_write(zilog_t *zilog, const lr_t *lrc, void *tx, uint64_t claim_txg)
 	/*
 	 * If we previously claimed it, we need to free it.
 	 */
-	if (bp->blk_birth >= claim_txg && zil_bp_tree_add(zilog, bp) == 0 &&
-	    !BP_IS_HOLE(bp)) {
+	if (BP_GET_LOGICAL_BIRTH(bp) >= claim_txg &&
+	    zil_bp_tree_add(zilog, bp) == 0 && !BP_IS_HOLE(bp)) {
 		zio_free(zilog->zl_spa, dmu_tx_get_txg(tx), bp);
 	}
 
@@ -1965,7 +1965,7 @@ next_lwb:
 		    &slog);
 	}
 	if (error == 0) {
-		ASSERT3U(bp->blk_birth, ==, txg);
+		ASSERT3U(BP_GET_LOGICAL_BIRTH(bp), ==, txg);
 		BP_SET_CHECKSUM(bp, nlwb->lwb_slim ? ZIO_CHECKSUM_ZILOG2 :
 		    ZIO_CHECKSUM_ZILOG);
 		bp->blk_cksum = lwb->lwb_blk.blk_cksum;
diff --git a/module/zfs/zio.c b/module/zfs/zio.c
index 213fe5c483..e96bbda35a 100644
--- a/module/zfs/zio.c
+++ b/module/zfs/zio.c
@@ -613,7 +613,7 @@ error:
 		zio->io_error = SET_ERROR(EIO);
 		if ((zio->io_flags & ZIO_FLAG_SPECULATIVE) == 0) {
 			spa_log_error(spa, &zio->io_bookmark,
-			    &zio->io_bp->blk_birth);
+			    BP_GET_LOGICAL_BIRTH(zio->io_bp));
 			(void) zfs_ereport_post(FM_EREPORT_ZFS_AUTHENTICATION,
 			    spa, NULL, &zio->io_bookmark, zio, 0);
 		}
@@ -1052,8 +1052,8 @@ zfs_blkptr_verify_log(spa_t *spa, const blkptr_t *bp,
 	    (long long)bp->blk_prop,
 	    (long long)bp->blk_pad[0],
 	    (long long)bp->blk_pad[1],
-	    (long long)bp->blk_phys_birth,
-	    (long long)bp->blk_birth,
+	    (long long)BP_GET_PHYSICAL_BIRTH(bp),
+	    (long long)BP_GET_LOGICAL_BIRTH(bp),
 	    (long long)bp->blk_fill,
 	    (long long)bp->blk_cksum.zc_word[0],
 	    (long long)bp->blk_cksum.zc_word[1],
@@ -1156,10 +1156,11 @@ zfs_blkptr_verify(spa_t *spa, const blkptr_t *bp,
 	/*
 	 * Pool-specific checks.
 	 *
-	 * Note: it would be nice to verify that the blk_birth and
-	 * BP_PHYSICAL_BIRTH() are not too large.  However, spa_freeze()
-	 * allows the birth time of log blocks (and dmu_sync()-ed blocks
-	 * that are in the log) to be arbitrarily large.
+	 * Note: it would be nice to verify that the logical birth
+	 * and physical birth are not too large.  However,
+	 * spa_freeze() allows the birth time of log blocks (and
+	 * dmu_sync()-ed blocks that are in the log) to be arbitrarily
+	 * large.
 	 */
 	for (int i = 0; i < BP_GET_NDVAS(bp); i++) {
 		const dva_t *dva = &bp->blk_dva[i];
@@ -1246,7 +1247,7 @@ zio_read(zio_t *pio, spa_t *spa, const blkptr_t *bp,
 {
 	zio_t *zio;
 
-	zio = zio_create(pio, spa, BP_PHYSICAL_BIRTH(bp), bp,
+	zio = zio_create(pio, spa, BP_GET_BIRTH(bp), bp,
 	    data, size, size, done, private,
 	    ZIO_TYPE_READ, priority, flags, NULL, 0, zb,
 	    ZIO_STAGE_OPEN, (flags & ZIO_FLAG_DDT_CHILD) ?
@@ -1435,7 +1436,7 @@ zio_claim(zio_t *pio, spa_t *spa, uint64_t txg, const blkptr_t *bp,
 	 * starts allocating blocks -- so that nothing is allocated twice.
 	 * If txg == 0 we just verify that the block is claimable.
 	 */
-	ASSERT3U(spa->spa_uberblock.ub_rootbp.blk_birth, <,
+	ASSERT3U(BP_GET_LOGICAL_BIRTH(&spa->spa_uberblock.ub_rootbp), <,
 	    spa_min_claim_txg(spa));
 	ASSERT(txg == spa_min_claim_txg(spa) || txg == 0);
 	ASSERT(!BP_GET_DEDUP(bp) || !spa_writeable(spa));	/* zdb(8) */
@@ -1731,7 +1732,7 @@ zio_write_bp_init(zio_t *zio)
 		blkptr_t *bp = zio->io_bp;
 		zio_prop_t *zp = &zio->io_prop;
 
-		ASSERT(bp->blk_birth != zio->io_txg);
+		ASSERT(BP_GET_LOGICAL_BIRTH(bp) != zio->io_txg);
 
 		*bp = *zio->io_bp_override;
 		zio->io_pipeline = ZIO_INTERLOCK_PIPELINE;
@@ -1819,7 +1820,7 @@ zio_write_compress(zio_t *zio)
 	ASSERT(zio->io_child_type != ZIO_CHILD_DDT);
 	ASSERT(zio->io_bp_override == NULL);
 
-	if (!BP_IS_HOLE(bp) && bp->blk_birth == zio->io_txg) {
+	if (!BP_IS_HOLE(bp) && BP_GET_LOGICAL_BIRTH(bp) == zio->io_txg) {
 		/*
 		 * We're rewriting an existing block, which means we're
 		 * working on behalf of spa_sync().  For spa_sync() to
@@ -1866,7 +1867,7 @@ zio_write_compress(zio_t *zio)
 			BP_SET_TYPE(bp, zio->io_prop.zp_type);
 			BP_SET_LEVEL(bp, zio->io_prop.zp_level);
 			zio_buf_free(cbuf, lsize);
-			bp->blk_birth = zio->io_txg;
+			BP_SET_LOGICAL_BIRTH(bp, zio->io_txg);
 			zio->io_pipeline = ZIO_INTERLOCK_PIPELINE;
 			ASSERT(spa_feature_is_active(spa,
 			    SPA_FEATURE_EMBEDDED_DATA));
@@ -1947,7 +1948,7 @@ zio_write_compress(zio_t *zio)
 	 * spa_sync() to allocate new blocks, but force rewrites after that.
 	 * There should only be a handful of blocks after pass 1 in any case.
 	 */
-	if (!BP_IS_HOLE(bp) && bp->blk_birth == zio->io_txg &&
+	if (!BP_IS_HOLE(bp) && BP_GET_LOGICAL_BIRTH(bp) == zio->io_txg &&
 	    BP_GET_PSIZE(bp) == psize &&
 	    pass >= zfs_sync_pass_rewrite) {
 		VERIFY3U(psize, !=, 0);
@@ -1961,7 +1962,7 @@ zio_write_compress(zio_t *zio)
 	}
 
 	if (psize == 0) {
-		if (zio->io_bp_orig.blk_birth != 0 &&
+		if (BP_GET_LOGICAL_BIRTH(&zio->io_bp_orig) != 0 &&
 		    spa_feature_is_active(spa, SPA_FEATURE_HOLE_BIRTH)) {
 			BP_SET_LSIZE(bp, lsize);
 			BP_SET_TYPE(bp, zp->zp_type);
@@ -3539,7 +3540,7 @@ zio_ddt_write(zio_t *zio)
 		else
 			ddt_phys_addref(ddp);
 	} else if (zio->io_bp_override) {
-		ASSERT(bp->blk_birth == txg);
+		ASSERT(BP_GET_LOGICAL_BIRTH(bp) == txg);
 		ASSERT(BP_EQUAL(bp, zio->io_bp_override));
 		ddt_phys_fill(ddp, bp);
 		ddt_phys_addref(ddp);
@@ -3810,11 +3811,13 @@ zio_dva_claim(zio_t *zio)
 static void
 zio_dva_unallocate(zio_t *zio, zio_gang_node_t *gn, blkptr_t *bp)
 {
-	ASSERT(bp->blk_birth == zio->io_txg || BP_IS_HOLE(bp));
+	ASSERT(BP_GET_LOGICAL_BIRTH(bp) == zio->io_txg || BP_IS_HOLE(bp));
 	ASSERT(zio->io_bp_override == NULL);
 
-	if (!BP_IS_HOLE(bp))
-		metaslab_free(zio->io_spa, bp, bp->blk_birth, B_TRUE);
+	if (!BP_IS_HOLE(bp)) {
+		metaslab_free(zio->io_spa, bp, BP_GET_LOGICAL_BIRTH(bp),
+		    B_TRUE);
+	}
 
 	if (gn != NULL) {
 		for (int g = 0; g < SPA_GBH_NBLKPTRS; g++) {
@@ -4555,8 +4558,8 @@ zio_ready(zio_t *zio)
 
 	if (zio->io_ready) {
 		ASSERT(IO_IS_ALLOCATING(zio));
-		ASSERT(bp->blk_birth == zio->io_txg || BP_IS_HOLE(bp) ||
-		    (zio->io_flags & ZIO_FLAG_NOPWRITE));
+		ASSERT(BP_GET_LOGICAL_BIRTH(bp) == zio->io_txg ||
+		    BP_IS_HOLE(bp) || (zio->io_flags & ZIO_FLAG_NOPWRITE));
 		ASSERT(zio->io_children[ZIO_CHILD_GANG][ZIO_WAIT_READY] == 0);
 
 		zio->io_ready(zio);
@@ -4852,7 +4855,7 @@ zio_done(zio_t *zio)
 			 * error and generate a logical data ereport.
 			 */
 			spa_log_error(zio->io_spa, &zio->io_bookmark,
-			    &zio->io_bp->blk_birth);
+			    BP_GET_LOGICAL_BIRTH(zio->io_bp));
 			(void) zfs_ereport_post(FM_EREPORT_ZFS_DATA,
 			    zio->io_spa, NULL, &zio->io_bookmark, zio, 0);
 		}
diff --git a/module/zfs/zio_checksum.c b/module/zfs/zio_checksum.c
index e511b31fee..ce6772a40c 100644
--- a/module/zfs/zio_checksum.c
+++ b/module/zfs/zio_checksum.c
@@ -272,7 +272,7 @@ static void
 zio_checksum_gang_verifier(zio_cksum_t *zcp, const blkptr_t *bp)
 {
 	const dva_t *dva = BP_IDENTITY(bp);
-	uint64_t txg = BP_PHYSICAL_BIRTH(bp);
+	uint64_t txg = BP_GET_BIRTH(bp);
 
 	ASSERT(BP_IS_GANG(bp));