Merge ZFS version 15 and almost all OpenSolaris bugfixes referenced

in Solaris 10 updates 141445-09 and 142901-14.

Detailed information:
(OpenSolaris revisions and Bug IDs, Solaris 10 patch numbers)

7844:effed23820ae
6755435	zfs_open() and zfs_close() needs to use ZFS_ENTER/ZFS_VERIFY_ZP (141445-01)

7897:e520d8258820
6748436	inconsistent zpool.cache in boot_archive could panic a zfs root filesystem upon boot-up (141445-01)

7965:b795da521357
6740164	zpool attach can create an illegal root pool (141909-02)

8084:b811cc60d650
6769612	zpool_import() will continue to write to cachefile even if altroot is set (N/A)

8121:7fd09d4ebd9c
6757430	want an option for zdb to disable space map loading and leak tracking (141445-01)

8129:e4f45a0bfbb0
6542860	ASSERT: reason != VDEV_LABEL_REMOVE||vdev_inuse(vd, crtxg, reason, 0) (141445-01)

8188:fd00c0a81e80
6761100	want zdb option to select older uberblocks (141445-01)

8190:6eeea43ced42
6774886	zfs_setattr() won't allow ndmp to restore SUNWattr_rw (141445-01)

8225:59a9961c2aeb
6737463	panic while trying to write out config file if root pool import fails (141445-01)

8227:f7d7be9b1f56
6765294	Refactor replay (141445-01)

8228:51e9ca9ee3a5
6572357	libzfs should do more to avoid mnttab lookups (141909-01)
6572376	zfs_iter_filesystems and zfs_iter_snapshots get objset stats twice (141909-01)

8241:5a60f16123ba
6328632	zpool offline is a bit too conservative (141445-01)
6739487	ASSERT: txg <= spa_final_txg due to scrub/export race (141445-01)
6767129	ASSERT: cvd->vdev_isspare, in spa_vdev_detach() (141445-01)
6747698	checksum failures after offline -t / export / import / scrub (141445-01)
6745863	ZFS writes to disk after it has been offlined (141445-01)
6722540	50% slowdown on scrub/resilver with certain vdev configurations (141445-01)
6759999	resilver logic rewrites ditto blocks on both source and destination (141445-01)
6758107	I/O should never suspend during spa_load() (141445-01)
6776548	codereview(1) runs off the page when faced with multi-line comments (N/A)
6761406	AMD errata 91 workaround doesn't work on 64-bit systems (141445-01)

8242:e46e4b2f0a03
6770866	GRUB/ZFS should require physical path or devid, but not both (141445-01)

8269:03a7e9050cfd
6674216	"zfs share" doesn't work, but "zfs set sharenfs=on" does (141445-01)
6621164	$SRC/cmd/zfs/zfs_main.c seems to have a syntax error in the translation note (141445-01)
6635482	i18n problems in libzfs_dataset.c and zfs_main.c (141445-01)
6595194	"zfs get" VALUE column is as wide as NAME (141445-01)
6722991	vdev_disk.c: error checking for ddi_pathname_to_dev_t() must test for NODEV (141445-01)
6396518	ASSERT strings shouldn't be pre-processed (141445-01)

8274:846b39508aff
6713916	scrub/resilver needlessly decompress data (141445-01)

8343:655db2375fed
6739553	libzfs_status msgid table is out of sync (141445-01)
6784104	libzfs unfairly rejects numerical values greater than 2^63 (141445-01)
6784108	zfs_realloc() should not free original memory on failure (141445-01)

8525:e0e0e525d0f8
6788830	set large value to reservation cause core dump (141445-01)
6791064	want sysevents for ZFS scrub (141445-01)
6791066	need to be able to set cachefile on faulted pools (141445-01)
6791071	zpool_do_import() should not enable datasets on faulted pools (141445-01)
6792134	getting multiple properties on a faulted pool leads to confusion (141445-01)

8547:bcc7b46e5ff7
6792884	Vista clients cannot access .zfs (141445-01)

8632:36ef517870a3
6798384	It can take a village to raise a zio (141445-01)

8636:7e4ce9158df3
6551866	deadlock between zfs_write(), zfs_freesp(), and zfs_putapage() (141909-01)
6504953	zfs_getpage() misunderstands VOP_GETPAGE() interface (141909-01)
6702206	ZFS read/writer lock contention throttles sendfile() benchmark (141445-01)
6780491	Zone on a ZFS filesystem has poor fork/exec performance (141445-01)
6747596	assertion failed: DVA_EQUAL(BP_IDENTITY(&zio->io_bp_orig), BP_IDENTITY(zio->io_bp))); (141445-01)

8692:692d4668b40d
6801507	ZFS read aggregation should not mind the gap (141445-01)

8697:e62d2612c14d
6633095	creating a filesystem with many properties set is slow (141445-01)

8768:dfecfdbb27ed
6775697	oracle crashes when overwriting after hitting quota on zfs (141909-01)

8811:f8deccf701cf
6790687	libzfs mnttab caching ignores external changes (141445-01)
6791101	memory leak from libzfs_mnttab_init (141445-01)

8845:91af0d9c0790
6800942	smb_session_create() incorrectly stores IP addresses (N/A)
6582163	Access Control List (ACL) for shares (141445-01)
6804954	smb_search - shortname field should be space padded following the NULL terminator (N/A)
6800184	Panic at smb_oplock_conflict+0x35() (N/A)

8876:59d2e67b4b65
6803822	Reboot after replacement of system disk in a ZFS mirror drops to grub> prompt (141445-01)

8924:5af812f84759
6789318	coredump when issue zdb -uuuu poolname/ (141445-01)
6790345 zdb -dddd -e poolname coredump (141445-01)
6797109 zdb: 'zdb -dddddd pool_name/fs_name inode' coredump if the file with inode was deleted (141445-01)
6797118 zdb: 'zdb -dddddd poolname inum' coredump if I miss the fs name (141445-01)
6803343 shareiscsi=on failed, iscsitgtd failed request to share (141445-01)

9030:243fd360d81f
6815893	hang mounting a dataset after booting into a new boot environment (141445-01)

9056:826e1858a846
6809691	'zpool create -f' no longer overwrites ufs infomation (141445-01)

9179:d8fbd96b79b3
6790064	zfs needs to determine uid and gid earlier in create process (141445-01)

9214:8d350e5d04aa
6604992	forced unmount + being in .zfs/snapshot/<snap1> = not happy (141909-01)
6810367	assertion failed: dvp->v_flag & VROOT, file: ../../common/fs/gfs.c, line: 426 (141909-01)

9229:e3f8b41e5db4
6807765	ztest_dsl_dataset_promote_busy needs to clean up after ENOSPC (141445-01)

9230:e4561e3eb1ef
6821169	offlining a device results in checksum errors (141445-01)
6821170	ZFS should not increment error stats for unavailable devices (141445-01)
6824006	need to increase issue and interrupt taskqs threads in zfs (141445-01)

9234:bffdc4fc05c4
6792139	recovering from a suspended pool needs some work (141445-01)
6794830	reboot command hangs on a failed zfs pool (141445-01)

9246:67c03c93c071
6824062	System panicked in zfs_mount due to NULL pointer dereference when running btts and svvs tests (141909-01)

9276:a8a7fc849933
6816124	System crash running zpool destroy on broken zpool (141445-03)

9355:09928982c591
6818183	zfs snapshot -r is slow due to set_snap_props() doing txg_wait_synced() for each new snapshot (141445-03)

9391:413d0661ef33
6710376	log device can show incorrect status when other parts of pool are degraded (141445-03)

9396:f41cf682d0d3 (part already merged)
6501037	want user/group quotas on ZFS (141445-03)
6827260	assertion failed in arc_read(): hdr == pbuf->b_hdr (141445-03)
6815592	panic: No such hold X on refcount Y from zfs_znode_move (141445-03)
6759986	zfs list shows temporary %clone when doing online zfs recv (141445-03)

9404:319573cd93f8
6774713	zfs ignores canmount=noauto when sharenfs property != off (141445-03)

9412:4aefd8704ce0
6717022	ZFS DMU needs zero-copy support (141445-03)

9425:e7ffacaec3a8
6799895	spa_add_spares() needs to be protected by config lock (141445-03)
6826466	want to post sysevents on hot spare activation (141445-03)
6826468	spa 'allowfaulted' needs some work (141445-03)
6826469	kernel support for storing vdev FRU information (141445-03)
6826470	skip posting checksum errors from DTL regions of leaf vdevs (141445-03)
6826471	I/O errors after device remove probe can confuse FMA (141445-03)
6826472	spares should enjoy some of the benefits of cache devices (141445-03)

9443:2a96d8478e95
6833711	gang leaders shouldn't have to be logical (141445-03)

9463:d0bd231c7518
6764124	want zdb to be able to checksum metadata blocks only (141445-03)

9465:8372081b8019
6830237	zfs panic in zfs_groupmember() (141445-03)

9466:1fdfd1fed9c4
6833162	phantom log device in zpool status (141445-03)

9469:4f68f041ddcd
6824968	add ZFS userquota support to rquotad (141445-03)

9470:6d827468d7b5
6834217	godfather I/O should reexecute (141445-03)

9480:fcff33da767f
6596237	Stop looking and start ganging (141909-02)

9493:9933d599bc93
6623978	lwb->lwb_buf != NULL, file ../../../uts/common/fs/zfs/zil.c, line 787, function zil_lwb_commit (141445-06)

9512:64cafcbcc337
6801810	Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads (N/A)

9515:d3b739d9d043
6586537	async zio taskqs can block out userland commands (142901-09)

9554:787363635b6a
6836768	zfs_userspace() callback has no way to indicate failure (N/A)

9574:1eb6a6ab2c57
6838062	zfs panics when an error is encountered in space_map_load() (141909-02)

9583:b0696cd037cc
6794136	Panic BAD TRAP: type=e when importing degraded zraid pool. (141909-03)

9630:e25a03f552e0
6776104	"zfs import" deadlock between spa_unload() and spa_async_thread() (141445-06)

9653:a70048a304d1
6664765	Unable to remove files when using fat-zap and quota exceeded on ZFS filesystem (141445-06)

9688:127be1845343
6841321	zfs userspace / zfs get userused@ doesn't work on mounted snapshot (N/A)
6843069	zfs get userused@S-1-... doesn't work (N/A)

9873:8ddc892eca6e
6847229	assertion failed: refcount_count(&tx->tx_space_written) + delta <= tx->tx_space_towrite in dmu_tx.c (141445-06)

9904:d260bd3fd47c
6838344	kernel heap corruption detected on zil while stress testing (141445-06)

9951:a4895b3dd543
6844900	zfs_ioc_userspace_upgrade leaks (N/A)

10040:38b25aeeaf7a
6857012	zfs panics on zpool import (141445-06)

10000:241a51d8720c
6848242	zdb -e no longer works as expected (N/A)

10100:4a6965f6bef8
6856634	snv_117 not booting: zfs_parse_bootfs: error2 (141445-07)

10160:a45b03783d44
6861983	zfs should use new name <-> SID interfaces (N/A)
6862984	userquota commands can hang (141445-06)

10299:80845694147f
6696858	zfs receive of incremental replication stream can dereference NULL pointer and crash (N/A)

10302:a9e3d1987706
6696858	zfs receive of incremental replication stream can dereference NULL pointer and crash (fix lint) (N/A)

10575:2a8816c5173b (partial merge)
6882227 spa_async_remove() shouldn't do a full clear (142901-14)

10800:469478b180d9
6880764	fsync on zfs is broken if writes are greater than 32kb on a hard crash and no log attached (142901-09)
6793430 zdb -ivvvv assertion failure: bp->blk_cksum.zc_word[2] == dmu_objset_id(zilog->zl_os) (N/A)

10801:e0bf032e8673 (partial merge)
6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT (142901-09)

10810:b6b161a6ae4a
6892298 buf->b_hdr->b_state != arc_anon, file: ../../common/fs/zfs/arc.c, line: 2849 (142901-09)

10890:499786962772
6807339	spurious checksum errors when replacing a vdev (142901-13)

11249:6c30f7dfc97b
6906110 bad trap panic in zil_replay_log_record (142901-13)
6906946 zfs replay isn't handling uid/gid correctly (142901-13)

11454:6e69bacc1a5a
6898245 suspended zpool should not cause rest of the zfs/zpool commands to hang (142901-10)

11546:42ea6be8961b (partial merge)
6833999 3-way deadlock in dsl_dataset_hold_ref() and dsl_sync_task_group_sync() (142901-09)

Discussed with:	pjd
Approved by:	delphij (mentor)
Obtained from:	OpenSolaris (multiple Bug IDs)
MFC after:	2 months

3 files changed, 185 insertions, 105 deletions

diff --git a/cddl/contrib/opensolaris/cmd/zdb/zdb.8 b/cddl/contrib/opensolaris/cmd/zdb/zdb.8
index c9d5aed..f601825 100644
--- a/cddl/contrib/opensolaris/cmd/zdb/zdb.8
+++ b/cddl/contrib/opensolaris/cmd/zdb/zdb.8
@@ -1,23 +1,8 @@
 '\" te
-.\" CDDL HEADER START
-.\"
-.\" The contents of this file are subject to the terms of the
-.\" Common Development and Distribution License (the "License").  
-.\" You may not use this file except in compliance with the License.
-.\"
-.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
-.\" or http://www.opensolaris.org/os/licensing.
-.\" See the License for the specific language governing permissions
-.\" and limitations under the License.
-.\"
-.\" When distributing Covered Code, include this CDDL HEADER in each
-.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE.
-.\" If applicable, add the following below this CDDL HEADER, with the
-.\" fields enclosed by brackets "[]" replaced with your own identifying
-.\" information: Portions Copyright [yyyy] [name of copyright owner]
-.\"
-.\" CDDL HEADER END
 .\" Copyright (c) 2004, Sun Microsystems, Inc. All Rights Reserved.
+.\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
+.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing.  See the License for the specific language governing permissions and limitations under the License.
+.\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE.  If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
 .TH zdb 1M "31 Oct 2005" "SunOS 5.11" "System Administration Commands"
 .SH NAME
 zdb \- ZFS debugger
diff --git a/cddl/contrib/opensolaris/cmd/zdb/zdb.c b/cddl/contrib/opensolaris/cmd/zdb/zdb.c
index f0b4ba4..7106bee 100644
--- a/cddl/contrib/opensolaris/cmd/zdb/zdb.c
+++ b/cddl/contrib/opensolaris/cmd/zdb/zdb.c
@@ -19,7 +19,7 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
+ * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
@@ -87,8 +87,8 @@ static void
 usage(void)
 {
 	(void) fprintf(stderr,
-	    "Usage: %s [-udibcsv] [-U cachefile_path] "
-	    "[-S user:cksumalg] "
+	    "Usage: %s [-udibcsvL] [-U cachefile_path] [-t txg]\n"
+	    "\t   [-S user:cksumalg] "
 	    "dataset [object...]\n"
 	    "       %s -C [pool]\n"
 	    "       %s -l dev\n"
@@ -102,12 +102,16 @@ usage(void)
 	(void) fprintf(stderr, "        -C cached pool configuration\n");
 	(void) fprintf(stderr, "	-i intent logs\n");
 	(void) fprintf(stderr, "	-b block statistics\n");
-	(void) fprintf(stderr, "	-c checksum all data blocks\n");
+	(void) fprintf(stderr, "	-m metaslabs\n");
+	(void) fprintf(stderr, "	-c checksum all metadata (twice for "
+	    "all data) blocks\n");
 	(void) fprintf(stderr, "	-s report stats on zdb's I/O\n");
 	(void) fprintf(stderr, "	-S <user|all>:<cksum_alg|all> -- "
 	    "dump blkptr signatures\n");
 	(void) fprintf(stderr, "	-v verbose (applies to all others)\n");
 	(void) fprintf(stderr, "        -l dump label contents\n");
+	(void) fprintf(stderr, "        -L disable leak tracking (do not "
+	    "load spacemaps)\n");
 	(void) fprintf(stderr, "	-U cachefile_path -- use alternate "
 	    "cachefile\n");
 	(void) fprintf(stderr, "        -R read and display block from a "
@@ -115,12 +119,19 @@ usage(void)
 	(void) fprintf(stderr, "        -e Pool is exported/destroyed/"
 	    "has altroot\n");
 	(void) fprintf(stderr, "	-p <Path to vdev dir> (use with -e)\n");
+	(void) fprintf(stderr, "	-t <txg> highest txg to use when "
+	    "searching for uberblocks\n");
 	(void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
 	    "to make only that option verbose\n");
 	(void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
 	exit(1);
 }
 
+/*
+ * Called for usage errors that are discovered after a call to spa_open(),
+ * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
+ */
+
 static void
 fatal(const char *fmt, ...)
 {
@@ -132,7 +143,7 @@ fatal(const char *fmt, ...)
 	va_end(ap);
 	(void) fprintf(stderr, "\n");
 
-	abort();
+	exit(1);
 }
 
 static void
@@ -205,7 +216,7 @@ dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
 	size_t nvsize = *(uint64_t *)data;
 	char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
 
-	VERIFY(0 == dmu_read(os, object, 0, nvsize, packed));
+	VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
 
 	VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
 
@@ -431,7 +442,7 @@ dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm)
 	alloc = 0;
 	for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) {
 		VERIFY(0 == dmu_read(os, smo->smo_object, offset,
-		    sizeof (entry), &entry));
+		    sizeof (entry), &entry, DMU_READ_PREFETCH));
 		if (SM_DEBUG_DECODE(entry)) {
 			(void) printf("\t\t[%4llu] %s: txg %llu, pass %llu\n",
 			    (u_longlong_t)(offset / sizeof (entry)),
@@ -463,6 +474,21 @@ dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm)
 }
 
 static void
+dump_metaslab_stats(metaslab_t *msp)
+{
+	char maxbuf[5];
+	space_map_t *sm = &msp->ms_map;
+	avl_tree_t *t = sm->sm_pp_root;
+	int free_pct = sm->sm_space * 100 / sm->sm_size;
+
+	nicenum(space_map_maxsize(sm), maxbuf);
+
+	(void) printf("\t %20s %10lu   %7s  %6s   %4s %4d%%\n",
+	    "segments", avl_numnodes(t), "maxsize", maxbuf,
+	    "freepct", free_pct);
+}
+
+static void
 dump_metaslab(metaslab_t *msp)
 {
 	char freebuf[5];
@@ -472,22 +498,28 @@ dump_metaslab(metaslab_t *msp)
 
 	nicenum(msp->ms_map.sm_size - smo->smo_alloc, freebuf);
 
-	if (dump_opt['d'] <= 5) {
-		(void) printf("\t%10llx   %10llu   %5s\n",
-		    (u_longlong_t)msp->ms_map.sm_start,
-		    (u_longlong_t)smo->smo_object,
-		    freebuf);
-		return;
-	}
-
 	(void) printf(
-	    "\tvdev %llu   offset %08llx   spacemap %4llu   free %5s\n",
+	    "\tvdev %5llu   offset %12llx   spacemap %6llu   free    %5s\n",
 	    (u_longlong_t)vd->vdev_id, (u_longlong_t)msp->ms_map.sm_start,
 	    (u_longlong_t)smo->smo_object, freebuf);
 
-	ASSERT(msp->ms_map.sm_size == (1ULL << vd->vdev_ms_shift));
+	if (dump_opt['m'] > 1) {
+		mutex_enter(&msp->ms_lock);
+		VERIFY(space_map_load(&msp->ms_map, zfs_metaslab_ops,
+		    SM_FREE, &msp->ms_smo, spa->spa_meta_objset) == 0);
+		dump_metaslab_stats(msp);
+		space_map_unload(&msp->ms_map);
+		mutex_exit(&msp->ms_lock);
+	}
+
+	if (dump_opt['d'] > 5 || dump_opt['m'] > 2) {
+		ASSERT(msp->ms_map.sm_size == (1ULL << vd->vdev_ms_shift));
+
+		mutex_enter(&msp->ms_lock);
+		dump_spacemap(spa->spa_meta_objset, smo, &msp->ms_map);
+		mutex_exit(&msp->ms_lock);
+	}
 
-	dump_spacemap(spa->spa_meta_objset, smo, &msp->ms_map);
 }
 
 static void
@@ -502,14 +534,12 @@ dump_metaslabs(spa_t *spa)
 	for (c = 0; c < rvd->vdev_children; c++) {
 		vd = rvd->vdev_child[c];
 
-		(void) printf("\n    vdev %llu\n\n", (u_longlong_t)vd->vdev_id);
+		(void) printf("\t%-10s   %-19s   %-15s   %-10s\n",
+		    "vdev", "offset", "spacemap", "free");
+		(void) printf("\t%10s   %19s   %15s   %10s\n",
+		    "----------", "-------------------",
+		    "---------------", "-------------");
 
-		if (dump_opt['d'] <= 5) {
-			(void) printf("\t%10s   %10s   %5s\n",
-			    "offset", "spacemap", "free");
-			(void) printf("\t%10s   %10s   %5s\n",
-			    "------", "--------", "----");
-		}
 		for (m = 0; m < vd->vdev_ms_count; m++)
 			dump_metaslab(vd->vdev_ms[m]);
 		(void) printf("\n");
@@ -517,44 +547,52 @@ dump_metaslabs(spa_t *spa)
 }
 
 static void
+dump_dtl_seg(space_map_t *sm, uint64_t start, uint64_t size)
+{
+	char *prefix = (void *)sm;
+
+	(void) printf("%s [%llu,%llu) length %llu\n",
+	    prefix,
+	    (u_longlong_t)start,
+	    (u_longlong_t)(start + size),
+	    (u_longlong_t)(size));
+}
+
+static void
 dump_dtl(vdev_t *vd, int indent)
 {
-	avl_tree_t *t = &vd->vdev_dtl_map.sm_root;
-	space_seg_t *ss;
-	vdev_t *pvd;
-	int c;
+	spa_t *spa = vd->vdev_spa;
+	boolean_t required;
+	char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
+	char prefix[256];
+
+	spa_vdev_state_enter(spa);
+	required = vdev_dtl_required(vd);
+	(void) spa_vdev_state_exit(spa, NULL, 0);
 
 	if (indent == 0)
 		(void) printf("\nDirty time logs:\n\n");
 
-	(void) printf("\t%*s%s\n", indent, "",
+	(void) printf("\t%*s%s [%s]\n", indent, "",
 	    vd->vdev_path ? vd->vdev_path :
-	    vd->vdev_parent ? vd->vdev_ops->vdev_op_type :
-	    spa_name(vd->vdev_spa));
+	    vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
+	    required ? "DTL-required" : "DTL-expendable");
 
-	for (ss = avl_first(t); ss; ss = AVL_NEXT(t, ss)) {
-		/*
-		 * Everything in this DTL must appear in all parent DTL unions.
-		 */
-		for (pvd = vd; pvd; pvd = pvd->vdev_parent)
-			ASSERT(vdev_dtl_contains(&pvd->vdev_dtl_map,
-			    ss->ss_start, ss->ss_end - ss->ss_start));
-		(void) printf("\t%*soutage [%llu,%llu] length %llu\n",
-		    indent, "",
-		    (u_longlong_t)ss->ss_start,
-		    (u_longlong_t)ss->ss_end - 1,
-		    (u_longlong_t)(ss->ss_end - ss->ss_start));
-	}
-
-	(void) printf("\n");
-
-	if (dump_opt['d'] > 5 && vd->vdev_children == 0) {
-		dump_spacemap(vd->vdev_spa->spa_meta_objset, &vd->vdev_dtl,
-		    &vd->vdev_dtl_map);
-		(void) printf("\n");
+	for (int t = 0; t < DTL_TYPES; t++) {
+		space_map_t *sm = &vd->vdev_dtl[t];
+		if (sm->sm_space == 0)
+			continue;
+		(void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
+		    indent + 2, "", name[t]);
+		mutex_enter(sm->sm_lock);
+		space_map_walk(sm, dump_dtl_seg, (void *)prefix);
+		mutex_exit(sm->sm_lock);
+		if (dump_opt['d'] > 5 && vd->vdev_children == 0)
+			dump_spacemap(spa->spa_meta_objset,
+			    &vd->vdev_dtl_smo, sm);
 	}
 
-	for (c = 0; c < vd->vdev_children; c++)
+	for (int c = 0; c < vd->vdev_children; c++)
 		dump_dtl(vd->vdev_child[c], indent + 4);
 }
 
@@ -668,7 +706,8 @@ visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
 				break;
 			fill += cbp->blk_fill;
 		}
-		ASSERT3U(fill, ==, bp->blk_fill);
+		if (!err)
+			ASSERT3U(fill, ==, bp->blk_fill);
 		(void) arc_buf_remove_ref(buf, &buf);
 	}
 
@@ -904,6 +943,7 @@ dump_uidgid(objset_t *os, znode_phys_t *zp)
 		/* first find the fuid object.  It lives in the master node */
 		VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
 		    8, 1, &fuid_obj) == 0);
+		zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
 		(void) zfs_fuid_table_load(os, fuid_obj,
 		    &idx_tree, &domain_tree);
 		fuid_table_loaded = B_TRUE;
@@ -1007,6 +1047,8 @@ static object_viewer_t *object_viewer[DMU_OT_NUMTYPES] = {
 	dump_packed_nvlist,	/* FUID nvlist size		*/
 	dump_zap,		/* DSL dataset next clones	*/
 	dump_zap,		/* DSL scrub queue		*/
+	dump_zap,		/* ZFS user/group used		*/
+	dump_zap,		/* ZFS user/group quota		*/
 };
 
 static void
@@ -1070,6 +1112,14 @@ dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
 	}
 
 	if (verbosity >= 4) {
+		(void) printf("\tdnode flags: %s%s\n",
+		    (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
+		    "USED_BYTES " : "",
+		    (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
+		    "USERUSED_ACCOUNTED " : "");
+		(void) printf("\tdnode maxblkid: %llu\n",
+		    (longlong_t)dn->dn_phys->dn_maxblkid);
+
 		object_viewer[doi.doi_bonus_type](os, object, bonus, bsize);
 		object_viewer[doi.doi_type](os, object, NULL, 0);
 		*print_header = 1;
@@ -1124,7 +1174,7 @@ dump_dir(objset_t *os)
 	uint64_t object, object_count;
 	uint64_t refdbytes, usedobjs, scratch;
 	char numbuf[8];
-	char blkbuf[BP_SPRINTF_LEN];
+	char blkbuf[BP_SPRINTF_LEN + 20];
 	char osname[MAXNAMELEN];
 	char *type = "UNKNOWN";
 	int verbosity = dump_opt['d'];
@@ -1150,8 +1200,8 @@ dump_dir(objset_t *os)
 	nicenum(refdbytes, numbuf);
 
 	if (verbosity >= 4) {
-		(void) strcpy(blkbuf, ", rootbp ");
-		sprintf_blkptr(blkbuf + strlen(blkbuf),
+		(void) sprintf(blkbuf + strlen(blkbuf), ", rootbp ");
+		(void) sprintf_blkptr(blkbuf + strlen(blkbuf),
 		    BP_SPRINTF_LEN - strlen(blkbuf), os->os->os_rootbp);
 	} else {
 		blkbuf[0] = '\0';
@@ -1186,7 +1236,12 @@ dump_dir(objset_t *os)
 	}
 
 	dump_object(os, 0, verbosity, &print_header);
-	object_count = 1;
+	object_count = 0;
+	if (os->os->os_userused_dnode &&
+	    os->os->os_userused_dnode->dn_type != 0) {
+		dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
+		dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
+	}
 
 	object = 0;
 	while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
@@ -1198,8 +1253,10 @@ dump_dir(objset_t *os)
 
 	(void) printf("\n");
 
-	if (error != ESRCH)
-		fatal("dmu_object_next() = %d", error);
+	if (error != ESRCH) {
+		(void) fprintf(stderr, "dmu_object_next() = %d\n", error);
+		abort();
+	}
 }
 
 static void
@@ -1390,7 +1447,8 @@ static space_map_ops_t zdb_space_map_ops = {
 	zdb_space_map_unload,
 	NULL,	/* alloc */
 	zdb_space_map_claim,
-	NULL	/* free */
+	NULL,	/* free */
+	NULL	/* maxsize */
 };
 
 static void
@@ -1489,8 +1547,9 @@ zdb_count_block(spa_t *spa, zdb_cb_t *zcb, blkptr_t *bp, dmu_object_type_t type)
 		}
 	}
 
-	VERIFY(zio_wait(zio_claim(NULL, spa, spa_first_txg(spa), bp,
-	    NULL, NULL, ZIO_FLAG_MUSTSUCCEED)) == 0);
+	if (!dump_opt['L'])
+		VERIFY(zio_wait(zio_claim(NULL, spa, spa_first_txg(spa), bp,
+		    NULL, NULL, ZIO_FLAG_MUSTSUCCEED)) == 0);
 }
 
 static int
@@ -1499,13 +1558,25 @@ zdb_blkptr_cb(spa_t *spa, blkptr_t *bp, const zbookmark_t *zb,
 {
 	zdb_cb_t *zcb = arg;
 	char blkbuf[BP_SPRINTF_LEN];
+	dmu_object_type_t type;
+	boolean_t is_l0_metadata;
 
 	if (bp == NULL)
 		return (0);
 
-	zdb_count_block(spa, zcb, bp, BP_GET_TYPE(bp));
+	type = BP_GET_TYPE(bp);
+
+	zdb_count_block(spa, zcb, bp, type);
 
-	if (dump_opt['c'] || dump_opt['S']) {
+	/*
+	 * if we do metadata-only checksumming there's no need to checksum
+	 * indirect blocks here because it is done during traverse
+	 */
+	is_l0_metadata = (BP_GET_LEVEL(bp) == 0 && type < DMU_OT_NUMTYPES &&
+	    dmu_ot[type].ot_metadata);
+
+	if (dump_opt['c'] > 1 || dump_opt['S'] ||
+	    (dump_opt['c'] && is_l0_metadata)) {
 		int ioerr, size;
 		void *data;
 
@@ -1517,7 +1588,7 @@ zdb_blkptr_cb(spa_t *spa, blkptr_t *bp, const zbookmark_t *zb,
 		free(data);
 
 		/* We expect io errors on intent log */
-		if (ioerr && BP_GET_TYPE(bp) != DMU_OT_INTENT_LOG) {
+		if (ioerr && type != DMU_OT_INTENT_LOG) {
 			zcb->zcb_haderrors = 1;
 			zcb->zcb_errors[ioerr]++;
 
@@ -1565,9 +1636,12 @@ dump_block_stats(spa_t *spa)
 	int c, e;
 
 	if (!dump_opt['S']) {
-		(void) printf("\nTraversing all blocks to %sverify"
-		    " nothing leaked ...\n",
-		    dump_opt['c'] ? "verify checksums and " : "");
+		(void) printf("\nTraversing all blocks %s%s%s%s%s...\n",
+		    (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
+		    (dump_opt['c'] == 1) ? "metadata " : "",
+		    dump_opt['c'] ? "checksums " : "",
+		    (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
+		    !dump_opt['L'] ? "nothing leaked " : "");
 	}
 
 	/*
@@ -1578,7 +1652,8 @@ dump_block_stats(spa_t *spa)
 	 * it's not part of any space map) is a double allocation,
 	 * reference to a freed block, or an unclaimed log block.
 	 */
-	zdb_leak_init(spa);
+	if (!dump_opt['L'])
+		zdb_leak_init(spa);
 
 	/*
 	 * If there's a deferred-free bplist, process that first.
@@ -1620,7 +1695,8 @@ dump_block_stats(spa_t *spa)
 	/*
 	 * Report any leaked segments.
 	 */
-	zdb_leak_fini(spa);
+	if (!dump_opt['L'])
+		zdb_leak_fini(spa);
 
 	/*
 	 * If we're interested in printing out the blkptr signatures,
@@ -1646,14 +1722,16 @@ dump_block_stats(spa_t *spa)
 	tzb = &zcb.zcb_type[ZB_TOTAL][DMU_OT_TOTAL];
 
 	if (tzb->zb_asize == alloc + logalloc) {
-		(void) printf("\n\tNo leaks (block sum matches space"
-		    " maps exactly)\n");
+		if (!dump_opt['L'])
+			(void) printf("\n\tNo leaks (block sum matches space"
+			    " maps exactly)\n");
 	} else {
 		(void) printf("block traversal size %llu != alloc %llu "
-		    "(leaked %lld)\n",
+		    "(%s %lld)\n",
 		    (u_longlong_t)tzb->zb_asize,
 		    (u_longlong_t)alloc + logalloc,
-		    (u_longlong_t)(alloc + logalloc - tzb->zb_asize));
+		    (dump_opt['L']) ? "unreachable" : "leaked",
+		    (longlong_t)(alloc + logalloc - tzb->zb_asize));
 		leaks = 1;
 	}
 
@@ -1760,14 +1838,17 @@ dump_zpool(spa_t *spa)
 	if (dump_opt['u'])
 		dump_uberblock(&spa->spa_uberblock);
 
-	if (dump_opt['d'] || dump_opt['i']) {
+	if (dump_opt['d'] || dump_opt['i'] || dump_opt['m']) {
 		dump_dir(dp->dp_meta_objset);
 		if (dump_opt['d'] >= 3) {
 			dump_bplist(dp->dp_meta_objset,
 			    spa->spa_sync_bplist_obj, "Deferred frees");
 			dump_dtl(spa->spa_root_vdev, 0);
-			dump_metaslabs(spa);
 		}
+
+		if (dump_opt['d'] >= 3 || dump_opt['m'])
+			dump_metaslabs(spa);
+
 		(void) dmu_objset_find(spa_name(spa), dump_one_dir, NULL,
 		    DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
 	}
@@ -2243,13 +2324,14 @@ main(int argc, char **argv)
 
 	dprintf_setup(&argc, argv);
 
-	while ((c = getopt(argc, argv, "udibcsvCS:U:lRep:")) != -1) {
+	while ((c = getopt(argc, argv, "udibcmsvCLS:U:lRep:t:")) != -1) {
 		switch (c) {
 		case 'u':
 		case 'd':
 		case 'i':
 		case 'b':
 		case 'c':
+		case 'm':
 		case 's':
 		case 'C':
 		case 'l':
@@ -2257,6 +2339,9 @@ main(int argc, char **argv)
 			dump_opt[c]++;
 			dump_all = 0;
 			break;
+		case 'L':
+			dump_opt[c]++;
+			break;
 		case 'v':
 			verbose++;
 			break;
@@ -2287,6 +2372,14 @@ main(int argc, char **argv)
 			else
 				usage();
 			break;
+		case 't':
+			ub_max_txg = strtoull(optarg, NULL, 0);
+			if (ub_max_txg < TXG_INITIAL) {
+				(void) fprintf(stderr, "incorrect txg "
+				    "specified: %s\n", optarg);
+				usage();
+			}
+			break;
 		default:
 			usage();
 			break;
@@ -2374,7 +2467,7 @@ main(int argc, char **argv)
 			}
 
 			if (error == 0)
-				error = spa_import_faulted(argv[0],
+				error = spa_import_verbatim(argv[0],
 				    exported_conf, nvl);
 
 			nvlist_free(nvl);
diff --git a/cddl/contrib/opensolaris/cmd/zdb/zdb_il.c b/cddl/contrib/opensolaris/cmd/zdb/zdb_il.c
index cc08ef5..1b3c18f 100644
--- a/cddl/contrib/opensolaris/cmd/zdb/zdb_il.c
+++ b/cddl/contrib/opensolaris/cmd/zdb/zdb_il.c
@@ -115,7 +115,7 @@ zil_prt_rec_write(zilog_t *zilog, int txtype, lr_write_t *lr)
 	    (u_longlong_t)lr->lr_foid, (longlong_t)lr->lr_offset,
 	    (u_longlong_t)lr->lr_length, (u_longlong_t)lr->lr_blkoff);
 
-	if (verbose < 5)
+	if (txtype == TX_WRITE2 || verbose < 5)
 		return;
 
 	if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
@@ -123,18 +123,19 @@ zil_prt_rec_write(zilog_t *zilog, int txtype, lr_write_t *lr)
 		    bp->blk_birth >= spa_first_txg(zilog->zl_spa) ?
 		    "will claim" : "won't claim");
 		print_log_bp(bp, "\t\t\t");
+		if (BP_IS_HOLE(bp)) {
+			(void) printf("\t\t\tLSIZE 0x%llx\n",
+			    (u_longlong_t)BP_GET_LSIZE(bp));
+		}
 		if (bp->blk_birth == 0) {
 			bzero(buf, sizeof (buf));
 		} else {
 			zbookmark_t zb;
 
-			ASSERT3U(bp->blk_cksum.zc_word[ZIL_ZC_OBJSET], ==,
-			    dmu_objset_id(zilog->zl_os));
-
-			zb.zb_objset = bp->blk_cksum.zc_word[ZIL_ZC_OBJSET];
-			zb.zb_object = 0;
-			zb.zb_level = -1;
-			zb.zb_blkid = bp->blk_cksum.zc_word[ZIL_ZC_SEQ];
+			zb.zb_objset = dmu_objset_id(zilog->zl_os);
+			zb.zb_object = lr->lr_foid;
+			zb.zb_level = 0;
+			zb.zb_blkid = -1; /* unknown */
 
 			error = zio_wait(zio_read(NULL, zilog->zl_spa,
 			    bp, buf, BP_GET_LSIZE(bp), NULL, NULL,
@@ -251,6 +252,7 @@ static zil_rec_info_t zil_rec_info[TX_MAX_TYPE] = {
 	{	zil_prt_rec_create,	"TX_MKDIR_ACL       " },
 	{	zil_prt_rec_create,	"TX_MKDIR_ATTR      " },
 	{	zil_prt_rec_create,	"TX_MKDIR_ACL_ATTR  " },
+	{	zil_prt_rec_write,	"TX_WRITE2          " },
 };
 
 /* ARGSUSED */