WiP merge of libzfs_core (MFV r238590, r238592)

not yet working, ioctl handling needs to be changed

6 files changed, 240 insertions, 121 deletions

diff --git a/cddl/contrib/opensolaris/cmd/zdb/zdb.c b/cddl/contrib/opensolaris/cmd/zdb/zdb.c
index 0238c65..f5a180f 100644
--- a/cddl/contrib/opensolaris/cmd/zdb/zdb.c
+++ b/cddl/contrib/opensolaris/cmd/zdb/zdb.c
@@ -57,6 +57,7 @@
 #include <sys/arc.h>
 #include <sys/ddt.h>
 #include <sys/zfeature.h>
+#include <zfs_comutil.h>
 #undef ZFS_MAXNAMELEN
 #undef verify
 #include <libzfs.h>
@@ -206,6 +207,27 @@ dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
 	nvlist_free(nv);
 }
 
+/* ARGSUSED */
+static void
+dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size)
+{
+	spa_history_phys_t *shp = data;
+
+	if (shp == NULL)
+		return;
+
+	(void) printf("\t\tpool_create_len = %llu\n",
+	    (u_longlong_t)shp->sh_pool_create_len);
+	(void) printf("\t\tphys_max_off = %llu\n",
+	    (u_longlong_t)shp->sh_phys_max_off);
+	(void) printf("\t\tbof = %llu\n",
+	    (u_longlong_t)shp->sh_bof);
+	(void) printf("\t\teof = %llu\n",
+	    (u_longlong_t)shp->sh_eof);
+	(void) printf("\t\trecords_lost = %llu\n",
+	    (u_longlong_t)shp->sh_records_lost);
+}
+
 static void
 zdb_nicenum(uint64_t num, char *buf)
 {
@@ -857,21 +879,22 @@ dump_history(spa_t *spa)
 	for (int i = 0; i < num; i++) {
 		uint64_t time, txg, ievent;
 		char *cmd, *intstr;
+		boolean_t printed = B_FALSE;
 
 		if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
 		    &time) != 0)
-			continue;
+			goto next;
 		if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
 		    &cmd) != 0) {
 			if (nvlist_lookup_uint64(events[i],
 			    ZPOOL_HIST_INT_EVENT, &ievent) != 0)
-				continue;
+				goto next;
 			verify(nvlist_lookup_uint64(events[i],
 			    ZPOOL_HIST_TXG, &txg) == 0);
 			verify(nvlist_lookup_string(events[i],
 			    ZPOOL_HIST_INT_STR, &intstr) == 0);
-			if (ievent >= LOG_END)
-				continue;
+			if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS)
+				goto next;
 
 			(void) snprintf(internalstr,
 			    sizeof (internalstr),
@@ -884,6 +907,14 @@ dump_history(spa_t *spa)
 		(void) localtime_r(&tsec, &t);
 		(void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
 		(void) printf("%s %s\n", tbuf, cmd);
+		printed = B_TRUE;
+
+next:
+		if (dump_opt['h'] > 1) {
+			if (!printed)
+				(void) printf("unrecognized record:\n");
+			dump_nvlist(events[i], 2);
+		}
 	}
 }
 
@@ -1460,7 +1491,7 @@ static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
 	dump_zap,		/* other ZAP			*/
 	dump_zap,		/* persistent error log		*/
 	dump_uint8,		/* SPA history			*/
-	dump_uint64,		/* SPA history offsets		*/
+	dump_history_offsets,	/* SPA history offsets		*/
 	dump_zap,		/* Pool properties		*/
 	dump_zap,		/* DSL permissions		*/
 	dump_acl,		/* ZFS ACL			*/
diff --git a/cddl/contrib/opensolaris/cmd/zfs/zfs.8 b/cddl/contrib/opensolaris/cmd/zfs/zfs.8
index be1cf9c..ca80c0b 100644
--- a/cddl/contrib/opensolaris/cmd/zfs/zfs.8
+++ b/cddl/contrib/opensolaris/cmd/zfs/zfs.8
@@ -65,6 +65,7 @@
 .Op Fl r
 .Oo Fl o Ar property Ns = Ns Ar value Oc Ns ...
 .Ar filesystem@snapname Ns | Ns Ar volume@snapname
+.Ar filesystem@snapname Ns | Ns Ar volume@snapname Ns ...
 .Nm
 .Cm rollback
 .Op Fl rRf
@@ -1645,17 +1646,18 @@ behavior for mounted file systems in use.
 .Op Fl r
 .Oo Fl o Ar property Ns = Ns Ar value Oc Ns ...
 .Ar filesystem@snapname Ns | Ns volume@snapname
+.Ar filesystem@snapname Ns | Ns volume@snapname Ns ...
 .Xc
 .Pp
-Creates a snapshot with the given name. All previous modifications by
-successful system calls to the file system are part of the snapshot. See the
+Creates snapshots with the given names. All previous modifications by
+successful system calls to the file system are part of the snapshots.
+Snapshots are taken atomically, so that all snapshots correspond to the same
+moment in time. See the
 .Qq Sx Snapshots
 section for details.
 .Bl -tag -width indent
 .It Fl r
-Recursively create snapshots of all descendent datasets. Snapshots are taken
-atomically, so that all recursive snapshots correspond to the same moment in
-time.
+Recursively create snapshots of all descendent datasets
 .It Fl o Ar property Ns = Ns Ar value
 Sets the specified property; see
 .Qq Nm Cm create
diff --git a/cddl/contrib/opensolaris/cmd/zfs/zfs_main.c b/cddl/contrib/opensolaris/cmd/zfs/zfs_main.c
index 1dfc82d..7ad53b4 100644
--- a/cddl/contrib/opensolaris/cmd/zfs/zfs_main.c
+++ b/cddl/contrib/opensolaris/cmd/zfs/zfs_main.c
@@ -58,6 +58,7 @@
 #include <time.h>
 
 #include <libzfs.h>
+#include <libzfs_core.h>
 #include <zfs_prop.h>
 #include <zfs_deleg.h>
 #include <libuutil.h>
@@ -74,6 +75,7 @@ libzfs_handle_t *g_zfs;
 
 static FILE *mnttab_file;
 static char history_str[HIS_MAX_RECORD_LEN];
+static boolean_t log_history = B_TRUE;
 
 static int zfs_do_clone(int argc, char **argv);
 static int zfs_do_create(int argc, char **argv);
@@ -276,7 +278,7 @@ get_usage(zfs_help_t idx)
 		return (gettext("\tshare <-a | filesystem>\n"));
 	case HELP_SNAPSHOT:
 		return (gettext("\tsnapshot [-r] [-o property=value] ... "
-		    "<filesystem@snapname|volume@snapname>\n"));
+		    "<filesystem@snapname|volume@snapname> ...\n"));
 	case HELP_UNMOUNT:
 		return (gettext("\tunmount [-f] "
 		    "<-a | filesystem|mountpoint>\n"));
@@ -916,9 +918,9 @@ typedef struct destroy_cbdata {
 	nvlist_t	*cb_nvl;
 
 	/* first snap in contiguous run */
-	zfs_handle_t	*cb_firstsnap;
+	char		*cb_firstsnap;
 	/* previous snap in contiguous run */
-	zfs_handle_t	*cb_prevsnap;
+	char		*cb_prevsnap;
 	int64_t		cb_snapused;
 	char		*cb_snapspec;
 } destroy_cbdata_t;
@@ -1032,11 +1034,13 @@ destroy_print_cb(zfs_handle_t *zhp, void *arg)
 
 	if (nvlist_exists(cb->cb_nvl, name)) {
 		if (cb->cb_firstsnap == NULL)
-			cb->cb_firstsnap = zfs_handle_dup(zhp);
+			cb->cb_firstsnap = strdup(name);
 		if (cb->cb_prevsnap != NULL)
-			zfs_close(cb->cb_prevsnap);
+			free(cb->cb_prevsnap);
 		/* this snap continues the current range */
-		cb->cb_prevsnap = zfs_handle_dup(zhp);
+		cb->cb_prevsnap = strdup(name);
+		if (cb->cb_firstsnap == NULL || cb->cb_prevsnap == NULL)
+			nomem();
 		if (cb->cb_verbose) {
 			if (cb->cb_parsable) {
 				(void) printf("destroy\t%s\n", name);
@@ -1051,12 +1055,12 @@ destroy_print_cb(zfs_handle_t *zhp, void *arg)
 	} else if (cb->cb_firstsnap != NULL) {
 		/* end of this range */
 		uint64_t used = 0;
-		err = zfs_get_snapused_int(cb->cb_firstsnap,
+		err = lzc_snaprange_space(cb->cb_firstsnap,
 		    cb->cb_prevsnap, &used);
 		cb->cb_snapused += used;
-		zfs_close(cb->cb_firstsnap);
+		free(cb->cb_firstsnap);
 		cb->cb_firstsnap = NULL;
-		zfs_close(cb->cb_prevsnap);
+		free(cb->cb_prevsnap);
 		cb->cb_prevsnap = NULL;
 	}
 	zfs_close(zhp);
@@ -1073,13 +1077,13 @@ destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
 	if (cb->cb_firstsnap != NULL) {
 		uint64_t used = 0;
 		if (err == 0) {
-			err = zfs_get_snapused_int(cb->cb_firstsnap,
+			err = lzc_snaprange_space(cb->cb_firstsnap,
 			    cb->cb_prevsnap, &used);
 		}
 		cb->cb_snapused += used;
-		zfs_close(cb->cb_firstsnap);
+		free(cb->cb_firstsnap);
 		cb->cb_firstsnap = NULL;
-		zfs_close(cb->cb_prevsnap);
+		free(cb->cb_prevsnap);
 		cb->cb_prevsnap = NULL;
 	}
 	return (err);
@@ -1932,9 +1936,11 @@ upgrade_set_callback(zfs_handle_t *zhp, void *data)
 			/*
 			 * If they did "zfs upgrade -a", then we could
 			 * be doing ioctls to different pools.  We need
-			 * to log this history once to each pool.
+			 * to log this history once to each pool, and bypass
+			 * the normal history logging that happens in main().
 			 */
-			verify(zpool_stage_history(g_zfs, history_str) == 0);
+			(void) zpool_log_history(g_zfs, history_str);
+			log_history = B_FALSE;
 		}
 		if (zfs_prop_set(zhp, "version", verstr) == 0)
 			cb->cb_numupgraded++;
@@ -3472,6 +3478,32 @@ zfs_do_set(int argc, char **argv)
 	return (ret);
 }
 
+typedef struct snap_cbdata {
+	nvlist_t *sd_nvl;
+	boolean_t sd_recursive;
+	const char *sd_snapname;
+} snap_cbdata_t;
+
+static int
+zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
+{
+	snap_cbdata_t *sd = arg;
+	char *name;
+	int rv = 0;
+	int error;
+
+	error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
+	if (error == -1)
+		nomem();
+	fnvlist_add_boolean(sd->sd_nvl, name);
+	free(name);
+
+	if (sd->sd_recursive)
+		rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
+	zfs_close(zhp);
+	return (rv);
+}
+
 /*
  * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
  *
@@ -3481,13 +3513,16 @@ zfs_do_set(int argc, char **argv)
 static int
 zfs_do_snapshot(int argc, char **argv)
 {
-	boolean_t recursive = B_FALSE;
 	int ret = 0;
 	char c;
 	nvlist_t *props;
+	snap_cbdata_t sd = { 0 };
+	boolean_t multiple_snaps = B_FALSE;
 
 	if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 		nomem();
+	if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
+		nomem();
 
 	/* check options */
 	while ((c = getopt(argc, argv, "ro:")) != -1) {
@@ -3497,7 +3532,8 @@ zfs_do_snapshot(int argc, char **argv)
 				return (1);
 			break;
 		case 'r':
-			recursive = B_TRUE;
+			sd.sd_recursive = B_TRUE;
+			multiple_snaps = B_TRUE;
 			break;
 		case '?':
 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
@@ -3514,18 +3550,35 @@ zfs_do_snapshot(int argc, char **argv)
 		(void) fprintf(stderr, gettext("missing snapshot argument\n"));
 		goto usage;
 	}
-	if (argc > 1) {
-		(void) fprintf(stderr, gettext("too many arguments\n"));
-		goto usage;
+
+	if (argc > 1)
+		multiple_snaps = B_TRUE;
+	for (; argc > 0; argc--, argv++) {
+		char *atp;
+		zfs_handle_t *zhp;
+
+		atp = strchr(argv[0], '@');
+		if (atp == NULL)
+			goto usage;
+		*atp = '\0';
+		sd.sd_snapname = atp + 1;
+		zhp = zfs_open(g_zfs, argv[0],
+		    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
+		if (zhp == NULL)
+			goto usage;
+		if (zfs_snapshot_cb(zhp, &sd) != 0)
+			goto usage;
 	}
 
-	ret = zfs_snapshot(g_zfs, argv[0], recursive, props);
+	ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
+	nvlist_free(sd.sd_nvl);
 	nvlist_free(props);
-	if (ret && recursive)
+	if (ret != 0 && multiple_snaps)
 		(void) fprintf(stderr, gettext("no snapshots were created\n"));
 	return (ret != 0);
 
 usage:
+	nvlist_free(sd.sd_nvl);
 	nvlist_free(props);
 	usage(B_FALSE);
 	return (-1);
@@ -6602,8 +6655,7 @@ main(int argc, char **argv)
 		return (1);
 	}
 
-	zpool_set_history_str("zfs", argc, argv, history_str);
-	verify(zpool_stage_history(g_zfs, history_str) == 0);
+	zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
 
 	libzfs_print_on_error(g_zfs, B_TRUE);
 
@@ -6672,6 +6724,9 @@ main(int argc, char **argv)
 
 	(void) fclose(mnttab_file);
 
+	if (ret == 0 && log_history)
+		(void) zpool_log_history(g_zfs, history_str);
+
 	libzfs_fini(g_zfs);
 
 	/*
diff --git a/cddl/contrib/opensolaris/cmd/zhack/zhack.c b/cddl/contrib/opensolaris/cmd/zhack/zhack.c
index 2618cea..f4be0b2 100644
--- a/cddl/contrib/opensolaris/cmd/zhack/zhack.c
+++ b/cddl/contrib/opensolaris/cmd/zhack/zhack.c
@@ -279,6 +279,9 @@ feature_enable_sync(void *arg1, void *arg2, dmu_tx_t *tx)
 	zfeature_info_t *feature = arg2;
 
 	spa_feature_enable(spa, feature, tx);
+	spa_history_log_internal(spa, "zhack enable feature", tx,
+	    "name=%s can_readonly=%u",
+	    feature->fi_guid, feature->fi_can_readonly);
 }
 
 static void
@@ -356,6 +359,8 @@ feature_incr_sync(void *arg1, void *arg2, dmu_tx_t *tx)
 	zfeature_info_t *feature = arg2;
 
 	spa_feature_incr(spa, feature, tx);
+	spa_history_log_internal(spa, "zhack feature incr", tx,
+	    "name=%s", feature->fi_guid);
 }
 
 static void
@@ -365,6 +370,8 @@ feature_decr_sync(void *arg1, void *arg2, dmu_tx_t *tx)
 	zfeature_info_t *feature = arg2;
 
 	spa_feature_decr(spa, feature, tx);
+	spa_history_log_internal(spa, "zhack feature decr", tx,
+	    "name=%s", feature->fi_guid);
 }
 
 static void
diff --git a/cddl/contrib/opensolaris/cmd/zpool/zpool_main.c b/cddl/contrib/opensolaris/cmd/zpool/zpool_main.c
index dd6c90b..ba4397a 100644
--- a/cddl/contrib/opensolaris/cmd/zpool/zpool_main.c
+++ b/cddl/contrib/opensolaris/cmd/zpool/zpool_main.c
@@ -192,9 +192,9 @@ static zpool_command_t command_table[] = {
 
 #define	NCOMMAND	(sizeof (command_table) / sizeof (command_table[0]))
 
-zpool_command_t *current_command;
+static zpool_command_t *current_command;
 static char history_str[HIS_MAX_RECORD_LEN];
-
+static boolean_t log_history = B_TRUE;
 static uint_t timestamp_fmt = NODATE;
 
 static const char *
@@ -1093,7 +1093,10 @@ zpool_do_destroy(int argc, char **argv)
 		return (1);
 	}
 
-	ret = (zpool_destroy(zhp) != 0);
+	/* The history must be logged as part of the export */
+	log_history = B_FALSE;
+
+	ret = (zpool_destroy(zhp, history_str) != 0);
 
 	zpool_close(zhp);
 
@@ -1157,10 +1160,13 @@ zpool_do_export(int argc, char **argv)
 			continue;
 		}
 
+		/* The history must be logged as part of the export */
+		log_history = B_FALSE;
+
 		if (hardforce) {
-			if (zpool_export_force(zhp) != 0)
+			if (zpool_export_force(zhp, history_str) != 0)
 				ret = 1;
-		} else if (zpool_export(zhp, force) != 0) {
+		} else if (zpool_export(zhp, force, history_str) != 0) {
 			ret = 1;
 		}
 
@@ -4560,6 +4566,14 @@ upgrade_cb(zpool_handle_t *zhp, void *arg)
 		if (count > 0) {
 			cbp->cb_first = B_FALSE;
 			printnl = B_TRUE;
+			/*
+			 * If they did "zpool upgrade -a", then we could
+			 * be doing ioctls to different pools.  We need
+			 * to log this history once to each pool, and bypass
+			 * the normal history logging that happens in main().
+			 */
+			(void) zpool_log_history(g_zfs, history_str);
+			log_history = B_FALSE;
 		}
 	}
 
@@ -4921,8 +4935,8 @@ zpool_do_upgrade(int argc, char **argv)
 
 typedef struct hist_cbdata {
 	boolean_t first;
-	int longfmt;
-	int internal;
+	boolean_t longfmt;
+	boolean_t internal;
 } hist_cbdata_t;
 
 /*
@@ -4934,21 +4948,8 @@ get_history_one(zpool_handle_t *zhp, void *data)
 	nvlist_t *nvhis;
 	nvlist_t **records;
 	uint_t numrecords;
-	char *cmdstr;
-	char *pathstr;
-	uint64_t dst_time;
-	time_t tsec;
-	struct tm t;
-	char tbuf[30];
 	int ret, i;
-	uint64_t who;
-	struct passwd *pwd;
-	char *hostname;
-	char *zonename;
-	char internalstr[MAXPATHLEN];
 	hist_cbdata_t *cb = (hist_cbdata_t *)data;
-	uint64_t txg;
-	uint64_t ievent;
 
 	cb->first = B_FALSE;
 
@@ -4960,64 +4961,94 @@ get_history_one(zpool_handle_t *zhp, void *data)
 	verify(nvlist_lookup_nvlist_array(nvhis, ZPOOL_HIST_RECORD,
 	    &records, &numrecords) == 0);
 	for (i = 0; i < numrecords; i++) {
-		if (nvlist_lookup_uint64(records[i], ZPOOL_HIST_TIME,
-		    &dst_time) != 0)
-			continue;
+		nvlist_t *rec = records[i];
+		char tbuf[30] = "";
 
-		/* is it an internal event or a standard event? */
-		if (nvlist_lookup_string(records[i], ZPOOL_HIST_CMD,
-		    &cmdstr) != 0) {
-			if (cb->internal == 0)
-				continue;
+		if (nvlist_exists(rec, ZPOOL_HIST_TIME)) {
+			time_t tsec;
+			struct tm t;
+
+			tsec = fnvlist_lookup_uint64(records[i],
+			    ZPOOL_HIST_TIME);
+			(void) localtime_r(&tsec, &t);
+			(void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
+		}
 
-			if (nvlist_lookup_uint64(records[i],
-			    ZPOOL_HIST_INT_EVENT, &ievent) != 0)
+		if (nvlist_exists(rec, ZPOOL_HIST_CMD)) {
+			(void) printf("%s %s", tbuf,
+			    fnvlist_lookup_string(rec, ZPOOL_HIST_CMD));
+		} else if (nvlist_exists(rec, ZPOOL_HIST_INT_EVENT)) {
+			int ievent =
+			    fnvlist_lookup_uint64(rec, ZPOOL_HIST_INT_EVENT);
+			if (!cb->internal)
+				continue;
+			if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS) {
+				(void) printf("%s unrecognized record:\n",
+				    tbuf);
+				dump_nvlist(rec, 4);
+				continue;
+			}
+			(void) printf("%s [internal %s txg:%lld] %s", tbuf,
+			    zfs_history_event_names[ievent],
+			    fnvlist_lookup_uint64(rec, ZPOOL_HIST_TXG),
+			    fnvlist_lookup_string(rec, ZPOOL_HIST_INT_STR));
+		} else if (nvlist_exists(rec, ZPOOL_HIST_INT_NAME)) {
+			if (!cb->internal)
 				continue;
-			verify(nvlist_lookup_uint64(records[i],
-			    ZPOOL_HIST_TXG, &txg) == 0);
-			verify(nvlist_lookup_string(records[i],
-			    ZPOOL_HIST_INT_STR, &pathstr) == 0);
-			if (ievent >= LOG_END)
+			(void) printf("%s [txg:%lld] %s", tbuf,
+			    fnvlist_lookup_uint64(rec, ZPOOL_HIST_TXG),
+			    fnvlist_lookup_string(rec, ZPOOL_HIST_INT_NAME));
+			if (nvlist_exists(rec, ZPOOL_HIST_DSNAME)) {
+				(void) printf(" %s (%llu)",
+				    fnvlist_lookup_string(rec,
+				    ZPOOL_HIST_DSNAME),
+				    fnvlist_lookup_uint64(rec,
+				    ZPOOL_HIST_DSID));
+			}
+			(void) printf(" %s", fnvlist_lookup_string(rec,
+			    ZPOOL_HIST_INT_STR));
+		} else if (nvlist_exists(rec, ZPOOL_HIST_IOCTL)) {
+			if (!cb->internal)
 				continue;
-			(void) snprintf(internalstr,
-			    sizeof (internalstr),
-			    "[internal %s txg:%lld] %s",
-			    zfs_history_event_names[ievent], txg,
-			    pathstr);
-			cmdstr = internalstr;
+			(void) printf("%s ioctl %s\n", tbuf,
+			    fnvlist_lookup_string(rec, ZPOOL_HIST_IOCTL));
+			if (nvlist_exists(rec, ZPOOL_HIST_INPUT_NVL)) {
+				(void) printf("    input:\n");
+				dump_nvlist(fnvlist_lookup_nvlist(rec,
+				    ZPOOL_HIST_INPUT_NVL), 8);
+			}
+			if (nvlist_exists(rec, ZPOOL_HIST_OUTPUT_NVL)) {
+				(void) printf("    output:\n");
+				dump_nvlist(fnvlist_lookup_nvlist(rec,
+				    ZPOOL_HIST_OUTPUT_NVL), 8);
+			}
+		} else {
+			if (!cb->internal)
+				continue;
+			(void) printf("%s unrecognized record:\n", tbuf);
+			dump_nvlist(rec, 4);
 		}
-		tsec = dst_time;
-		(void) localtime_r(&tsec, &t);
-		(void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
-		(void) printf("%s %s", tbuf, cmdstr);
 
 		if (!cb->longfmt) {
 			(void) printf("\n");
 			continue;
 		}
 		(void) printf(" [");
-		if (nvlist_lookup_uint64(records[i],
-		    ZPOOL_HIST_WHO, &who) == 0) {
-			pwd = getpwuid((uid_t)who);
-			if (pwd)
-				(void) printf("user %s on",
-				    pwd->pw_name);
-			else
-				(void) printf("user %d on",
-				    (int)who);
-		} else {
-			(void) printf(gettext("no info]\n"));
-			continue;
+		if (nvlist_exists(rec, ZPOOL_HIST_WHO)) {
+			uid_t who = fnvlist_lookup_uint64(rec, ZPOOL_HIST_WHO);
+			struct passwd *pwd = getpwuid(who);
+			(void) printf("user %d ", (int)who);
+			if (pwd != NULL)
+				(void) printf("(%s) ", pwd->pw_name);
 		}
-		if (nvlist_lookup_string(records[i],
-		    ZPOOL_HIST_HOST, &hostname) == 0) {
-			(void) printf(" %s", hostname);
+		if (nvlist_exists(rec, ZPOOL_HIST_HOST)) {
+			(void) printf("on %s",
+			    fnvlist_lookup_string(rec, ZPOOL_HIST_HOST));
 		}
-		if (nvlist_lookup_string(records[i],
-		    ZPOOL_HIST_ZONE, &zonename) == 0) {
-			(void) printf(":%s", zonename);
+		if (nvlist_exists(rec, ZPOOL_HIST_ZONE)) {
+			(void) printf(":%s",
+			    fnvlist_lookup_string(rec, ZPOOL_HIST_ZONE));
 		}
-
 		(void) printf("]");
 		(void) printf("\n");
 	}
@@ -5032,8 +5063,6 @@ get_history_one(zpool_handle_t *zhp, void *data)
  *
  * Displays the history of commands that modified pools.
  */
-
-
 int
 zpool_do_history(int argc, char **argv)
 {
@@ -5046,10 +5075,10 @@ zpool_do_history(int argc, char **argv)
 	while ((c = getopt(argc, argv, "li")) != -1) {
 		switch (c) {
 		case 'l':
-			cbdata.longfmt = 1;
+			cbdata.longfmt = B_TRUE;
 			break;
 		case 'i':
-			cbdata.internal = 1;
+			cbdata.internal = B_TRUE;
 			break;
 		case '?':
 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
@@ -5274,8 +5303,7 @@ main(int argc, char **argv)
 	if (strcmp(cmdname, "-?") == 0)
 		usage(B_TRUE);
 
-	zpool_set_history_str("zpool", argc, argv, history_str);
-	verify(zpool_stage_history(g_zfs, history_str) == 0);
+	zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
 
 	/*
 	 * Run the appropriate command.
@@ -5302,6 +5330,9 @@ main(int argc, char **argv)
 		usage(B_FALSE);
 	}
 
+	if (ret == 0 && log_history)
+		(void) zpool_log_history(g_zfs, history_str);
+
 	libzfs_fini(g_zfs);
 
 	/*
diff --git a/cddl/contrib/opensolaris/cmd/ztest/ztest.c b/cddl/contrib/opensolaris/cmd/ztest/ztest.c
index 9c38b3f..8046698 100644
--- a/cddl/contrib/opensolaris/cmd/ztest/ztest.c
+++ b/cddl/contrib/opensolaris/cmd/ztest/ztest.c
@@ -2332,7 +2332,7 @@ ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id)
 	 */
 	nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1);
 	VERIFY3U(ENOENT, ==,
-	    spa_create("ztest_bad_file", nvroot, NULL, NULL, NULL));
+	    spa_create("ztest_bad_file", nvroot, NULL, NULL));
 	nvlist_free(nvroot);
 
 	/*
@@ -2340,7 +2340,7 @@ ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id)
 	 */
 	nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 2, 1);
 	VERIFY3U(ENOENT, ==,
-	    spa_create("ztest_bad_mirror", nvroot, NULL, NULL, NULL));
+	    spa_create("ztest_bad_mirror", nvroot, NULL, NULL));
 	nvlist_free(nvroot);
 
 	/*
@@ -2349,7 +2349,7 @@ ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id)
 	 */
 	(void) rw_rdlock(&ztest_name_lock);
 	nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1);
-	VERIFY3U(EEXIST, ==, spa_create(zo->zo_pool, nvroot, NULL, NULL, NULL));
+	VERIFY3U(EEXIST, ==, spa_create(zo->zo_pool, nvroot, NULL, NULL));
 	nvlist_free(nvroot);
 	VERIFY3U(0, ==, spa_open(zo->zo_pool, &spa, FTAG));
 	VERIFY3U(EBUSY, ==, spa_destroy(zo->zo_pool));
@@ -2407,7 +2407,7 @@ ztest_spa_upgrade(ztest_ds_t *zd, uint64_t id)
 	props = fnvlist_alloc();
 	fnvlist_add_uint64(props,
 	    zpool_prop_to_name(ZPOOL_PROP_VERSION), version);
-	VERIFY0(spa_create(name, nvroot, props, NULL, NULL));
+	VERIFY0(spa_create(name, nvroot, props, NULL));
 	fnvlist_free(nvroot);
 	fnvlist_free(props);
 
@@ -3208,8 +3208,7 @@ ztest_snapshot_create(char *osname, uint64_t id)
 	(void) snprintf(snapname, MAXNAMELEN, "%s@%llu", osname,
 	    (u_longlong_t)id);
 
-	error = dmu_objset_snapshot(osname, strchr(snapname, '@') + 1,
-	    NULL, NULL, B_FALSE, B_FALSE, -1);
+	error = dmu_objset_snapshot_one(osname, strchr(snapname, '@') + 1);
 	if (error == ENOSPC) {
 		ztest_record_enospc(FTAG);
 		return (B_FALSE);
@@ -3409,8 +3408,7 @@ ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id)
 	(void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id);
 	(void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id);
 
-	error = dmu_objset_snapshot(osname, strchr(snap1name, '@')+1,
-	    NULL, NULL, B_FALSE, B_FALSE, -1);
+	error = dmu_objset_snapshot_one(osname, strchr(snap1name, '@') + 1);
 	if (error && error != EEXIST) {
 		if (error == ENOSPC) {
 			ztest_record_enospc(FTAG);
@@ -3433,8 +3431,7 @@ ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id)
 		fatal(0, "dmu_objset_create(%s) = %d", clone1name, error);
 	}
 
-	error = dmu_objset_snapshot(clone1name, strchr(snap2name, '@')+1,
-	    NULL, NULL, B_FALSE, B_FALSE, -1);
+	error = dmu_objset_snapshot_one(clone1name, strchr(snap2name, '@') + 1);
 	if (error && error != EEXIST) {
 		if (error == ENOSPC) {
 			ztest_record_enospc(FTAG);
@@ -3443,8 +3440,7 @@ ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id)
 		fatal(0, "dmu_open_snapshot(%s) = %d", snap2name, error);
 	}
 
-	error = dmu_objset_snapshot(clone1name, strchr(snap3name, '@')+1,
-	    NULL, NULL, B_FALSE, B_FALSE, -1);
+	error = dmu_objset_snapshot_one(clone1name, strchr(snap3name, '@') + 1);
 	if (error && error != EEXIST) {
 		if (error == ENOSPC) {
 			ztest_record_enospc(FTAG);
@@ -4632,8 +4628,7 @@ ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id)
 	 * Create snapshot, clone it, mark snap for deferred destroy,
 	 * destroy clone, verify snap was also destroyed.
 	 */
-	error = dmu_objset_snapshot(osname, snapname, NULL, NULL, FALSE,
-	    FALSE, -1);
+	error = dmu_objset_snapshot_one(osname, snapname);
 	if (error) {
 		if (error == ENOSPC) {
 			ztest_record_enospc("dmu_objset_snapshot");
@@ -4675,8 +4670,7 @@ ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id)
 	 * destroy a held snapshot, mark for deferred destroy,
 	 * release hold, verify snapshot was destroyed.
 	 */
-	error = dmu_objset_snapshot(osname, snapname, NULL, NULL, FALSE,
-	    FALSE, -1);
+	error = dmu_objset_snapshot_one(osname, snapname);
 	if (error) {
 		if (error == ENOSPC) {
 			ztest_record_enospc("dmu_objset_snapshot");
@@ -5791,8 +5785,7 @@ ztest_init(ztest_shared_t *zs)
 		    spa_feature_table[i].fi_uname);
 		VERIFY3U(0, ==, nvlist_add_uint64(props, buf, 0));
 	}
-	VERIFY3U(0, ==, spa_create(ztest_opts.zo_pool, nvroot, props,
-	    NULL, NULL));
+	VERIFY3U(0, ==, spa_create(ztest_opts.zo_pool, nvroot, props, NULL));
 	nvlist_free(nvroot);
 
 	VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));