Illumos 4757, 4913

4757 ZFS embedded-data block pointers ("zero block compression")
4913 zfs release should not be subject to space checks

Reviewed by: Adam Leventhal <[email protected]>
Reviewed by: Max Grossman <[email protected]>
Reviewed by: George Wilson <[email protected]>
Reviewed by: Christopher Siden <[email protected]>
Reviewed by: Dan McDonald <[email protected]>
Approved by: Dan McDonald <[email protected]>

References:
  https://www.illumos.org/issues/4757
  https://www.illumos.org/issues/4913
  https://github.com/illumos/illumos-gate/commit/5d7b4d4

Porting notes:

For compatibility with the fastpath code the zio_done() function
needed to be updated.  Because embedded-data block pointers do
not require DVAs to be allocated the associated vdevs will not
be marked and therefore should not be unmarked.

Ported by: Tim Chase <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #2544

1 files changed, 43 insertions, 10 deletions

diff --git a/cmd/zstreamdump/zstreamdump.c b/cmd/zstreamdump/zstreamdump.c
index a4c451d53..dd8b31ccc 100644
--- a/cmd/zstreamdump/zstreamdump.c
+++ b/cmd/zstreamdump/zstreamdump.c
@@ -36,7 +36,6 @@
 #include <sys/zfs_ioctl.h>
 #include <zfs_fletcher.h>
 
-uint64_t drr_record_count[DRR_NUMTYPES];
 uint64_t total_write_size = 0;
 uint64_t total_stream_len = 0;
 FILE *send_stream = 0;
@@ -81,6 +80,8 @@ int
 main(int argc, char *argv[])
 {
 	char *buf = malloc(INITIAL_BUFLEN);
+	uint64_t drr_record_count[DRR_NUMTYPES] = { 0 };
+	uint64_t total_records = 0;
 	dmu_replay_record_t thedrr;
 	dmu_replay_record_t *drr = &thedrr;
 	struct drr_begin *drrb = &thedrr.drr_u.drr_begin;
@@ -91,6 +92,7 @@ main(int argc, char *argv[])
 	struct drr_write_byref *drrwbr = &thedrr.drr_u.drr_write_byref;
 	struct drr_free *drrf = &thedrr.drr_u.drr_free;
 	struct drr_spill *drrs = &thedrr.drr_u.drr_spill;
+	struct drr_write_embedded *drrwe = &thedrr.drr_u.drr_write_embedded;
 	char c;
 	boolean_t verbose = B_FALSE;
 	boolean_t first = B_TRUE;
@@ -170,6 +172,7 @@ main(int argc, char *argv[])
 		}
 
 		drr_record_count[drr->drr_type]++;
+		total_records++;
 
 		switch (drr->drr_type) {
 		case DRR_BEGIN:
@@ -286,8 +289,8 @@ main(int argc, char *argv[])
 				    drro->drr_bonuslen);
 			}
 			if (drro->drr_bonuslen > 0) {
-				(void) ssread(buf, P2ROUNDUP(drro->drr_bonuslen,
-				    8), &zc);
+				(void) ssread(buf,
+				    P2ROUNDUP(drro->drr_bonuslen, 8), &zc);
 			}
 			break;
 
@@ -397,6 +400,38 @@ main(int argc, char *argv[])
 			}
 			(void) ssread(buf, drrs->drr_length, &zc);
 			break;
+		case DRR_WRITE_EMBEDDED:
+			if (do_byteswap) {
+				drrwe->drr_object =
+				    BSWAP_64(drrwe->drr_object);
+				drrwe->drr_offset =
+				    BSWAP_64(drrwe->drr_offset);
+				drrwe->drr_length =
+				    BSWAP_64(drrwe->drr_length);
+				drrwe->drr_toguid =
+				    BSWAP_64(drrwe->drr_toguid);
+				drrwe->drr_lsize =
+				    BSWAP_32(drrwe->drr_lsize);
+				drrwe->drr_psize =
+				    BSWAP_32(drrwe->drr_psize);
+			}
+			if (verbose) {
+				(void) printf("WRITE_EMBEDDED object = %llu "
+				    "offset = %llu length = %llu\n"
+				    "toguid = %llx comp = %u etype = %u "
+				    "lsize = %u psize = %u\n",
+				    (u_longlong_t)drrwe->drr_object,
+				    (u_longlong_t)drrwe->drr_offset,
+				    (u_longlong_t)drrwe->drr_length,
+				    (u_longlong_t)drrwe->drr_toguid,
+				    drrwe->drr_compression,
+				    drrwe->drr_etype,
+				    drrwe->drr_lsize,
+				    drrwe->drr_psize);
+			}
+			(void) ssread(buf,
+			    P2ROUNDUP(drrwe->drr_psize, 8), &zc);
+			break;
 		case DRR_NUMTYPES:
 			/* should never be reached */
 			exit(1);
@@ -418,18 +453,16 @@ main(int argc, char *argv[])
 	    (u_longlong_t)drr_record_count[DRR_FREEOBJECTS]);
 	(void) printf("\tTotal DRR_WRITE records = %lld\n",
 	    (u_longlong_t)drr_record_count[DRR_WRITE]);
+	(void) printf("\tTotal DRR_WRITE_BYREF records = %lld\n",
+	    (u_longlong_t)drr_record_count[DRR_WRITE_BYREF]);
+	(void) printf("\tTotal DRR_WRITE_EMBEDDED records = %lld\n",
+	    (u_longlong_t)drr_record_count[DRR_WRITE_EMBEDDED]);
 	(void) printf("\tTotal DRR_FREE records = %lld\n",
 	    (u_longlong_t)drr_record_count[DRR_FREE]);
 	(void) printf("\tTotal DRR_SPILL records = %lld\n",
 	    (u_longlong_t)drr_record_count[DRR_SPILL]);
 	(void) printf("\tTotal records = %lld\n",
-	    (u_longlong_t)(drr_record_count[DRR_BEGIN] +
-	    drr_record_count[DRR_OBJECT] +
-	    drr_record_count[DRR_FREEOBJECTS] +
-	    drr_record_count[DRR_WRITE] +
-	    drr_record_count[DRR_FREE] +
-	    drr_record_count[DRR_SPILL] +
-	    drr_record_count[DRR_END]));
+	    (u_longlong_t)total_records);
 	(void) printf("\tTotal write size = %lld (0x%llx)\n",
 	    (u_longlong_t)total_write_size, (u_longlong_t)total_write_size);
 	(void) printf("\tTotal stream length = %lld (0x%llx)\n",