]> granicus.if.org Git - zfs/blobdiff - cmd/zpool/zpool_main.c
OpenZFS 9166 - zfs storage pool checkpoint
[zfs] / cmd / zpool / zpool_main.c
index ebadccf19e09d681e4667cae45c0d412a364495b..5aca0d32594a398db81faeec115d44f6bd55c7b6 100644 (file)
 /*
  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
- * Copyright (c) 2011, 2015 by Delphix. All rights reserved.
+ * Copyright (c) 2011, 2016 by Delphix. All rights reserved.
  * Copyright (c) 2012 by Frederik Wessels. All rights reserved.
  * Copyright (c) 2012 by Cyril Plisko. All rights reserved.
  * Copyright (c) 2013 by Prasad Joshi (sTec). All rights reserved.
  * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>.
+ * Copyright (c) 2017 Datto Inc.
+ * Copyright (c) 2017 Open-E, Inc. All Rights Reserved.
  */
 
 #include <assert.h>
@@ -34,6 +36,7 @@
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <getopt.h>
 #include <libgen.h>
 #include <libintl.h>
 #include <libuutil.h>
 #include <unistd.h>
 #include <pwd.h>
 #include <zone.h>
+#include <sys/wait.h>
 #include <zfs_prop.h>
 #include <sys/fs/zfs.h>
 #include <sys/stat.h>
+#include <sys/systeminfo.h>
 #include <sys/fm/fs/zfs.h>
 #include <sys/fm/util.h>
 #include <sys/fm/protocol.h>
 #include <sys/zfs_ioctl.h>
+#include <sys/mount.h>
+#include <sys/sysmacros.h>
+
 #include <math.h>
 
 #include <libzfs.h>
@@ -69,6 +77,8 @@ static int zpool_do_add(int, char **);
 static int zpool_do_remove(int, char **);
 static int zpool_do_labelclear(int, char **);
 
+static int zpool_do_checkpoint(int, char **);
+
 static int zpool_do_list(int, char **);
 static int zpool_do_iostat(int, char **);
 static int zpool_do_status(int, char **);
@@ -98,6 +108,8 @@ static int zpool_do_events(int, char **);
 static int zpool_do_get(int, char **);
 static int zpool_do_set(int, char **);
 
+static int zpool_do_sync(int, char **);
+
 /*
  * These libumem hooks provide a reasonable set of defaults for the allocator's
  * debugging facilities.
@@ -122,6 +134,7 @@ typedef enum {
        HELP_ATTACH,
        HELP_CLEAR,
        HELP_CREATE,
+       HELP_CHECKPOINT,
        HELP_DESTROY,
        HELP_DETACH,
        HELP_EXPORT,
@@ -141,6 +154,7 @@ typedef enum {
        HELP_GET,
        HELP_SET,
        HELP_SPLIT,
+       HELP_SYNC,
        HELP_REGUID,
        HELP_REOPEN
 } zpool_help_t;
@@ -244,6 +258,8 @@ static zpool_command_t command_table[] = {
        { NULL },
        { "labelclear", zpool_do_labelclear,    HELP_LABELCLEAR         },
        { NULL },
+       { "checkpoint", zpool_do_checkpoint,    HELP_CHECKPOINT         },
+       { NULL },
        { "list",       zpool_do_list,          HELP_LIST               },
        { "iostat",     zpool_do_iostat,        HELP_IOSTAT             },
        { "status",     zpool_do_status,        HELP_STATUS             },
@@ -270,6 +286,7 @@ static zpool_command_t command_table[] = {
        { NULL },
        { "get",        zpool_do_get,           HELP_GET                },
        { "set",        zpool_do_set,           HELP_SET                },
+       { "sync",       zpool_do_sync,          HELP_SYNC               },
 };
 
 #define        NCOMMAND        (ARRAY_SIZE(command_table))
@@ -295,6 +312,8 @@ get_usage(zpool_help_t idx)
                return (gettext("\tcreate [-fnd] [-o property=value] ... \n"
                    "\t    [-O file-system-property=value] ... \n"
                    "\t    [-m mountpoint] [-R root] <pool> <vdev> ...\n"));
+       case HELP_CHECKPOINT:
+               return (gettext("\tcheckpoint [--discard] <pool> ...\n"));
        case HELP_DESTROY:
                return (gettext("\tdestroy [-f] <pool>\n"));
        case HELP_DETACH:
@@ -305,57 +324,60 @@ get_usage(zpool_help_t idx)
                return (gettext("\thistory [-il] [<pool>] ...\n"));
        case HELP_IMPORT:
                return (gettext("\timport [-d dir] [-D]\n"
-                   "\timport [-d dir | -c cachefile] [-F [-n]] <pool | id>\n"
                    "\timport [-o mntopts] [-o property=value] ... \n"
-                   "\t    [-d dir | -c cachefile] [-D] [-f] [-m] [-N] "
+                   "\t    [-d dir | -c cachefile] [-D] [-l] [-f] [-m] [-N] "
                    "[-R root] [-F [-n]] -a\n"
                    "\timport [-o mntopts] [-o property=value] ... \n"
-                   "\t    [-d dir | -c cachefile] [-D] [-f] [-m] [-N] "
+                   "\t    [-d dir | -c cachefile] [-D] [-l] [-f] [-m] [-N] "
                    "[-R root] [-F [-n]]\n"
-                   "\t    <pool | id> [newpool]\n"));
+                   "\t    [--rewind-to-checkpoint] <pool | id> [newpool]\n"));
        case HELP_IOSTAT:
-               return (gettext("\tiostat [-c CMD] [-T d | u] [-ghHLpPvy] "
-                   "[[-lq]|[-r|-w]]\n"
-                   "\t    [[pool ...]|[pool vdev ...]|[vdev ...]] "
-                   "[interval [count]]\n"));
+               return (gettext("\tiostat [[[-c [script1,script2,...]"
+                   "[-lq]]|[-rw]] [-T d | u] [-ghHLpPvy]\n"
+                   "\t    [[pool ...]|[pool vdev ...]|[vdev ...]]"
+                   " [interval [count]]\n"));
        case HELP_LABELCLEAR:
                return (gettext("\tlabelclear [-f] <vdev>\n"));
        case HELP_LIST:
                return (gettext("\tlist [-gHLpPv] [-o property[,...]] "
-                   "[-T d|u] [pool] ... [interval [count]]\n"));
+                   "[-T d|u] [pool] ... \n"
+                   "\t    [interval [count]]\n"));
        case HELP_OFFLINE:
-               return (gettext("\toffline [-t] <pool> <device> ...\n"));
+               return (gettext("\toffline [-f] [-t] <pool> <device> ...\n"));
        case HELP_ONLINE:
                return (gettext("\tonline <pool> <device> ...\n"));
        case HELP_REPLACE:
                return (gettext("\treplace [-f] [-o property=value] "
                    "<pool> <device> [new-device]\n"));
        case HELP_REMOVE:
-               return (gettext("\tremove <pool> <device> ...\n"));
+               return (gettext("\tremove [-nps] <pool> <device> ...\n"));
        case HELP_REOPEN:
-               return (gettext("\treopen <pool>\n"));
+               return (gettext("\treopen [-n] <pool>\n"));
        case HELP_SCRUB:
-               return (gettext("\tscrub [-s] <pool> ...\n"));
+               return (gettext("\tscrub [-s | -p] <pool> ...\n"));
        case HELP_STATUS:
-               return (gettext("\tstatus [-c CMD] [-gLPvxD] [-T d|u] [pool]"
-                   " ... [interval [count]]\n"));
+               return (gettext("\tstatus [-c [script1,script2,...]] [-gLPvxD]"
+                   "[-T d|u] [pool] ... \n"
+                   "\t    [interval [count]]\n"));
        case HELP_UPGRADE:
                return (gettext("\tupgrade\n"
                    "\tupgrade -v\n"
                    "\tupgrade [-V version] <-a | pool ...>\n"));
        case HELP_EVENTS:
-               return (gettext("\tevents [-vHfc]\n"));
+               return (gettext("\tevents [-vHf [pool] | -c]\n"));
        case HELP_GET:
                return (gettext("\tget [-Hp] [-o \"all\" | field[,...]] "
                    "<\"all\" | property[,...]> <pool> ...\n"));
        case HELP_SET:
                return (gettext("\tset <property=value> <pool> \n"));
        case HELP_SPLIT:
-               return (gettext("\tsplit [-gLnP] [-R altroot] [-o mntopts]\n"
+               return (gettext("\tsplit [-gLnPl] [-R altroot] [-o mntopts]\n"
                    "\t    [-o property=value] <pool> <newpool> "
                    "[<device> ...]\n"));
        case HELP_REGUID:
                return (gettext("\treguid <pool>\n"));
+       case HELP_SYNC:
+               return (gettext("\tsync [pool] ...\n"));
        }
 
        abort();
@@ -497,7 +519,7 @@ static int
 add_prop_list(const char *propname, char *propval, nvlist_t **props,
     boolean_t poolprop)
 {
-       zpool_prop_t prop = ZPROP_INVAL;
+       zpool_prop_t prop = ZPOOL_PROP_INVAL;
        zfs_prop_t fprop;
        nvlist_t *proplist;
        const char *normnm;
@@ -515,7 +537,7 @@ add_prop_list(const char *propname, char *propval, nvlist_t **props,
        if (poolprop) {
                const char *vname = zpool_prop_to_name(ZPOOL_PROP_VERSION);
 
-               if ((prop = zpool_name_to_prop(propname)) == ZPROP_INVAL &&
+               if ((prop = zpool_name_to_prop(propname)) == ZPOOL_PROP_INVAL &&
                    !zpool_prop_feature(propname)) {
                        (void) fprintf(stderr, gettext("property '%s' is "
                            "not a valid pool property\n"), propname);
@@ -526,7 +548,7 @@ add_prop_list(const char *propname, char *propval, nvlist_t **props,
                 * feature@ properties and version should not be specified
                 * at the same time.
                 */
-               if ((prop == ZPROP_INVAL && zpool_prop_feature(propname) &&
+               if ((prop == ZPOOL_PROP_INVAL && zpool_prop_feature(propname) &&
                    nvlist_exists(proplist, vname)) ||
                    (prop == ZPOOL_PROP_VERSION &&
                    prop_list_contains_feature(proplist))) {
@@ -676,6 +698,20 @@ zpool_do_add(int argc, char **argv)
                return (1);
        }
 
+       /* unless manually specified use "ashift" pool property (if set) */
+       if (!nvlist_exists(props, ZPOOL_CONFIG_ASHIFT)) {
+               int intval;
+               zprop_source_t src;
+               char strval[ZPOOL_MAXPROPLEN];
+
+               intval = zpool_get_prop_int(zhp, ZPOOL_PROP_ASHIFT, &src);
+               if (src != ZPROP_SRC_DEFAULT) {
+                       (void) sprintf(strval, "%" PRId32, intval);
+                       verify(add_prop_list(ZPOOL_CONFIG_ASHIFT, strval,
+                           &props, B_TRUE) == 0);
+               }
+       }
+
        /* pass off to get_vdev_spec for processing */
        nvroot = make_root_vdev(zhp, props, force, !force, B_FALSE, dryrun,
            argc, argv);
@@ -752,8 +788,7 @@ zpool_do_add(int argc, char **argv)
 /*
  * zpool remove  <pool> <vdev> ...
  *
- * Removes the given vdev from the pool.  Currently, this supports removing
- * spares, cache, and log devices from the pool.
+ * Removes the given vdev from the pool.
  */
 int
 zpool_do_remove(int argc, char **argv)
@@ -761,28 +796,87 @@ zpool_do_remove(int argc, char **argv)
        char *poolname;
        int i, ret = 0;
        zpool_handle_t *zhp = NULL;
+       boolean_t stop = B_FALSE;
+       char c;
+       boolean_t noop = B_FALSE;
+       boolean_t parsable = B_FALSE;
 
-       argc--;
-       argv++;
+       /* check options */
+       while ((c = getopt(argc, argv, "nps")) != -1) {
+               switch (c) {
+               case 'n':
+                       noop = B_TRUE;
+                       break;
+               case 'p':
+                       parsable = B_TRUE;
+                       break;
+               case 's':
+                       stop = B_TRUE;
+                       break;
+               case '?':
+                       (void) fprintf(stderr, gettext("invalid option '%c'\n"),
+                           optopt);
+                       usage(B_FALSE);
+               }
+       }
+
+       argc -= optind;
+       argv += optind;
 
        /* get pool name and check number of arguments */
        if (argc < 1) {
                (void) fprintf(stderr, gettext("missing pool name argument\n"));
                usage(B_FALSE);
        }
-       if (argc < 2) {
-               (void) fprintf(stderr, gettext("missing device\n"));
-               usage(B_FALSE);
-       }
 
        poolname = argv[0];
 
        if ((zhp = zpool_open(g_zfs, poolname)) == NULL)
                return (1);
 
-       for (i = 1; i < argc; i++) {
-               if (zpool_vdev_remove(zhp, argv[i]) != 0)
+       if (stop && noop) {
+               (void) fprintf(stderr, gettext("stop request ignored\n"));
+               return (0);
+       }
+
+       if (stop) {
+               if (argc > 1) {
+                       (void) fprintf(stderr, gettext("too many arguments\n"));
+                       usage(B_FALSE);
+               }
+               if (zpool_vdev_remove_cancel(zhp) != 0)
                        ret = 1;
+       } else {
+               if (argc < 2) {
+                       (void) fprintf(stderr, gettext("missing device\n"));
+                       usage(B_FALSE);
+               }
+
+               for (i = 1; i < argc; i++) {
+                       if (noop) {
+                               uint64_t size;
+
+                               if (zpool_vdev_indirect_size(zhp, argv[i],
+                                   &size) != 0) {
+                                       ret = 1;
+                                       break;
+                               }
+                               if (parsable) {
+                                       (void) printf("%s %llu\n",
+                                           argv[i], (unsigned long long)size);
+                               } else {
+                                       char valstr[32];
+                                       zfs_nicenum(size, valstr,
+                                           sizeof (valstr));
+                                       (void) printf("Memory that will be "
+                                           "used after removing %s: %s\n",
+                                           argv[i], valstr);
+                               }
+                       } else {
+                               if (zpool_vdev_remove(zhp, argv[i]) != 0)
+                                       ret = 1;
+                       }
+               }
        }
        zpool_close(zhp);
 
@@ -865,10 +959,15 @@ zpool_do_labelclear(int argc, char **argv)
                return (1);
        }
 
+       if (ioctl(fd, BLKFLSBUF) != 0)
+               (void) fprintf(stderr, gettext("failed to invalidate "
+                   "cache for %s: %s\n"), vdev, strerror(errno));
+
        if (zpool_read_label(fd, &config, NULL) != 0 || config == NULL) {
                (void) fprintf(stderr,
                    gettext("failed to check state for %s\n"), vdev);
-               return (1);
+               ret = 1;
+               goto errout;
        }
        nvlist_free(config);
 
@@ -876,7 +975,8 @@ zpool_do_labelclear(int argc, char **argv)
        if (ret != 0) {
                (void) fprintf(stderr,
                    gettext("failed to check state for %s\n"), vdev);
-               return (1);
+               ret = 1;
+               goto errout;
        }
 
        if (!inuse)
@@ -1538,17 +1638,68 @@ typedef struct status_cbdata {
        vdev_cmd_data_list_t    *vcdl;
 } status_cbdata_t;
 
-/* Print output line for specific vdev in a specific pool */
+/* Return 1 if string is NULL, empty, or whitespace; return 0 otherwise. */
+static int
+is_blank_str(char *str)
+{
+       while (str != NULL && *str != '\0') {
+               if (!isblank(*str))
+                       return (0);
+               str++;
+       }
+       return (1);
+}
+
+/* Print command output lines for specific vdev in a specific pool */
 static void
 zpool_print_cmd(vdev_cmd_data_list_t *vcdl, const char *pool, char *path)
 {
-       int i;
+       vdev_cmd_data_t *data;
+       int i, j;
+       char *val;
+
        for (i = 0; i < vcdl->count; i++) {
-               if ((strcmp(vcdl->data[i].path, path) == 0) &&
-                   (strcmp(vcdl->data[i].pool, pool) == 0)) {
-                       printf("%s", vcdl->data[i].line);
-                       break;
+               if ((strcmp(vcdl->data[i].path, path) != 0) ||
+                   (strcmp(vcdl->data[i].pool, pool) != 0)) {
+                       /* Not the vdev we're looking for */
+                       continue;
+               }
+
+               data = &vcdl->data[i];
+               /* Print out all the output values for this vdev */
+               for (j = 0; j < vcdl->uniq_cols_cnt; j++) {
+                       val = NULL;
+                       /* Does this vdev have values for this column? */
+                       for (int k = 0; k < data->cols_cnt; k++) {
+                               if (strcmp(data->cols[k],
+                                   vcdl->uniq_cols[j]) == 0) {
+                                       /* yes it does, record the value */
+                                       val = data->lines[k];
+                                       break;
+                               }
+                       }
+                       /*
+                        * Mark empty values with dashes to make output
+                        * awk-able.
+                        */
+                       if (is_blank_str(val))
+                               val = "-";
+
+                       printf("%*s", vcdl->uniq_cols_width[j], val);
+                       if (j < vcdl->uniq_cols_cnt - 1)
+                               printf("  ");
+               }
+
+               /* Print out any values that aren't in a column at the end */
+               for (j = data->cols_cnt; j < data->lines_cnt; j++) {
+                       /* Did we have any columns?  If so print a spacer. */
+                       if (vcdl->uniq_cols_cnt > 0)
+                               printf("  ");
+
+                       val = data->lines[j];
+                       printf("%s", val ? val : "");
                }
+               break;
        }
 }
 
@@ -1567,7 +1718,8 @@ print_status_config(zpool_handle_t *zhp, status_cbdata_t *cb, const char *name,
        char *vname;
        uint64_t notpresent;
        spare_cbdata_t spare_cb;
-       char *state;
+       const char *state;
+       char *type;
        char *path = NULL;
 
        if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
@@ -1577,6 +1729,11 @@ print_status_config(zpool_handle_t *zhp, status_cbdata_t *cb, const char *name,
        verify(nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS,
            (uint64_t **)&vs, &c) == 0);
 
+       verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) == 0);
+
+       if (strcmp(type, VDEV_TYPE_INDIRECT) == 0)
+               return;
+
        state = zpool_state_to_name(vs->vs_state, vs->vs_aux);
        if (isspare) {
                /*
@@ -1665,6 +1822,14 @@ print_status_config(zpool_handle_t *zhp, status_cbdata_t *cb, const char *name,
                        (void) printf(gettext("split into new pool"));
                        break;
 
+               case VDEV_AUX_ACTIVE:
+                       (void) printf(gettext("currently in use"));
+                       break;
+
+               case VDEV_AUX_CHILDREN_OFFLINE:
+                       (void) printf(gettext("all children offline"));
+                       break;
+
                default:
                        (void) printf(gettext("corrupted data"));
                        break;
@@ -1674,7 +1839,7 @@ print_status_config(zpool_handle_t *zhp, status_cbdata_t *cb, const char *name,
        (void) nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_SCAN_STATS,
            (uint64_t **)&ps, &c);
 
-       if (ps && ps->pss_state == DSS_SCANNING &&
+       if (ps != NULL && ps->pss_state == DSS_SCANNING &&
            vs->vs_scan_processed != 0 && children == 0) {
                (void) printf(gettext("  (%s)"),
                    (ps->pss_func == POOL_SCAN_RESILVER) ?
@@ -1760,6 +1925,14 @@ print_import_config(status_cbdata_t *cb, const char *name, nvlist_t *nv,
                        (void) printf(gettext("too many errors"));
                        break;
 
+               case VDEV_AUX_ACTIVE:
+                       (void) printf(gettext("currently in use"));
+                       break;
+
+               case VDEV_AUX_CHILDREN_OFFLINE:
+                       (void) printf(gettext("all children offline"));
+                       break;
+
                default:
                        (void) printf(gettext("corrupted data"));
                        break;
@@ -1857,8 +2030,10 @@ show_import(nvlist_t *config)
        vdev_stat_t *vs;
        char *name;
        uint64_t guid;
+       uint64_t hostid = 0;
        char *msgid;
-       nvlist_t *nvroot;
+       char *hostname = "unknown";
+       nvlist_t *nvroot, *nvinfo;
        zpool_status_t reason;
        zpool_errata_t errata;
        const char *health;
@@ -1946,6 +2121,17 @@ show_import(nvlist_t *config)
                zpool_print_unsup_feat(config);
                break;
 
+       case ZPOOL_STATUS_HOSTID_ACTIVE:
+               (void) printf(gettext(" status: The pool is currently "
+                   "imported by another system.\n"));
+               break;
+
+       case ZPOOL_STATUS_HOSTID_REQUIRED:
+               (void) printf(gettext(" status: The pool has the "
+                   "multihost property on.  It cannot\n\tbe safely imported "
+                   "when the system hostid is not set.\n"));
+               break;
+
        case ZPOOL_STATUS_HOSTID_MISMATCH:
                (void) printf(gettext(" status: The pool was last accessed by "
                    "another system.\n"));
@@ -2015,6 +2201,15 @@ show_import(nvlist_t *config)
                                    "updating.\n"));
                                break;
 
+                       case ZPOOL_ERRATA_ZOL_6845_ENCRYPTION:
+                               (void) printf(gettext(" action: Existing "
+                                   "encrypted datasets contain an on-disk "
+                                   "incompatibility, which\n\tneeds to be "
+                                   "corrected. Backup these datasets to new "
+                                   "encrypted datasets\n\tand destroy the "
+                                   "old ones.\n"));
+                               break;
+
                        default:
                                /*
                                 * All errata must contain an action message.
@@ -2059,6 +2254,27 @@ show_import(nvlist_t *config)
                            "imported. Attach the missing\n\tdevices and try "
                            "again.\n"));
                        break;
+               case ZPOOL_STATUS_HOSTID_ACTIVE:
+                       VERIFY0(nvlist_lookup_nvlist(config,
+                           ZPOOL_CONFIG_LOAD_INFO, &nvinfo));
+
+                       if (nvlist_exists(nvinfo, ZPOOL_CONFIG_MMP_HOSTNAME))
+                               hostname = fnvlist_lookup_string(nvinfo,
+                                   ZPOOL_CONFIG_MMP_HOSTNAME);
+
+                       if (nvlist_exists(nvinfo, ZPOOL_CONFIG_MMP_HOSTID))
+                               hostid = fnvlist_lookup_uint64(nvinfo,
+                                   ZPOOL_CONFIG_MMP_HOSTID);
+
+                       (void) printf(gettext(" action: The pool must be "
+                           "exported from %s (hostid=%lx)\n\tbefore it "
+                           "can be safely imported.\n"), hostname,
+                           (unsigned long) hostid);
+                       break;
+               case ZPOOL_STATUS_HOSTID_REQUIRED:
+                       (void) printf(gettext(" action: Set a unique system "
+                           "hostid with the zgenhostid(8) command.\n"));
+                       break;
                default:
                        (void) printf(gettext(" action: The pool cannot be "
                            "imported due to damaged devices or data.\n"));
@@ -2091,7 +2307,8 @@ show_import(nvlist_t *config)
 
        (void) printf(gettext(" config:\n\n"));
 
-       cb.cb_namewidth = max_width(NULL, nvroot, 0, 0, VDEV_NAME_TYPE_ID);
+       cb.cb_namewidth = max_width(NULL, nvroot, 0, strlen(name),
+           VDEV_NAME_TYPE_ID);
        if (cb.cb_namewidth < 10)
                cb.cb_namewidth = 10;
 
@@ -2106,6 +2323,31 @@ show_import(nvlist_t *config)
        }
 }
 
+static boolean_t
+zfs_force_import_required(nvlist_t *config)
+{
+       uint64_t state;
+       uint64_t hostid = 0;
+       nvlist_t *nvinfo;
+
+       state = fnvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_STATE);
+       (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_HOSTID, &hostid);
+
+       if (state != POOL_STATE_EXPORTED && hostid != get_system_hostid())
+               return (B_TRUE);
+
+       nvinfo = fnvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO);
+       if (nvlist_exists(nvinfo, ZPOOL_CONFIG_MMP_STATE)) {
+               mmp_state_t mmp_state = fnvlist_lookup_uint64(nvinfo,
+                   ZPOOL_CONFIG_MMP_STATE);
+
+               if (mmp_state != MMP_STATE_INACTIVE)
+                       return (B_TRUE);
+       }
+
+       return (B_FALSE);
+}
+
 /*
  * Perform the import for the given configuration.  This passes the heavy
  * lifting off to zpool_import_props(), and then mounts the datasets contained
@@ -2115,50 +2357,76 @@ static int
 do_import(nvlist_t *config, const char *newname, const char *mntopts,
     nvlist_t *props, int flags)
 {
+       int ret = 0;
        zpool_handle_t *zhp;
        char *name;
-       uint64_t state;
        uint64_t version;
 
-       verify(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME,
-           &name) == 0);
+       name = fnvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME);
+       version = fnvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION);
 
-       verify(nvlist_lookup_uint64(config,
-           ZPOOL_CONFIG_POOL_STATE, &state) == 0);
-       verify(nvlist_lookup_uint64(config,
-           ZPOOL_CONFIG_VERSION, &version) == 0);
        if (!SPA_VERSION_IS_SUPPORTED(version)) {
                (void) fprintf(stderr, gettext("cannot import '%s': pool "
                    "is formatted using an unsupported ZFS version\n"), name);
                return (1);
-       } else if (state != POOL_STATE_EXPORTED &&
+       } else if (zfs_force_import_required(config) &&
            !(flags & ZFS_IMPORT_ANY_HOST)) {
-               uint64_t hostid = 0;
-               unsigned long system_hostid = get_system_hostid();
+               mmp_state_t mmp_state = MMP_STATE_INACTIVE;
+               nvlist_t *nvinfo;
 
-               (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_HOSTID,
-                   &hostid);
+               nvinfo = fnvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO);
+               if (nvlist_exists(nvinfo, ZPOOL_CONFIG_MMP_STATE))
+                       mmp_state = fnvlist_lookup_uint64(nvinfo,
+                           ZPOOL_CONFIG_MMP_STATE);
 
-               if (hostid != 0 && (unsigned long)hostid != system_hostid) {
-                       char *hostname;
-                       uint64_t timestamp;
-                       time_t t;
+               if (mmp_state == MMP_STATE_ACTIVE) {
+                       char *hostname = "<unknown>";
+                       uint64_t hostid = 0;
 
-                       verify(nvlist_lookup_string(config,
-                           ZPOOL_CONFIG_HOSTNAME, &hostname) == 0);
-                       verify(nvlist_lookup_uint64(config,
-                           ZPOOL_CONFIG_TIMESTAMP, &timestamp) == 0);
-                       t = timestamp;
-                       (void) fprintf(stderr, gettext("cannot import "
-                           "'%s': pool may be in use from other "
-                           "system, it was last accessed by %s "
-                           "(hostid: 0x%lx) on %s"), name, hostname,
-                           (unsigned long)hostid,
-                           asctime(localtime(&t)));
-                       (void) fprintf(stderr, gettext("use '-f' to "
-                           "import anyway\n"));
-                       return (1);
+                       if (nvlist_exists(nvinfo, ZPOOL_CONFIG_MMP_HOSTNAME))
+                               hostname = fnvlist_lookup_string(nvinfo,
+                                   ZPOOL_CONFIG_MMP_HOSTNAME);
+
+                       if (nvlist_exists(nvinfo, ZPOOL_CONFIG_MMP_HOSTID))
+                               hostid = fnvlist_lookup_uint64(nvinfo,
+                                   ZPOOL_CONFIG_MMP_HOSTID);
+
+                       (void) fprintf(stderr, gettext("cannot import '%s': "
+                           "pool is imported on %s (hostid: "
+                           "0x%lx)\nExport the pool on the other system, "
+                           "then run 'zpool import'.\n"),
+                           name, hostname, (unsigned long) hostid);
+               } else if (mmp_state == MMP_STATE_NO_HOSTID) {
+                       (void) fprintf(stderr, gettext("Cannot import '%s': "
+                           "pool has the multihost property on and the\n"
+                           "system's hostid is not set. Set a unique hostid "
+                           "with the zgenhostid(8) command.\n"), name);
+               } else {
+                       char *hostname = "<unknown>";
+                       uint64_t timestamp = 0;
+                       uint64_t hostid = 0;
+
+                       if (nvlist_exists(config, ZPOOL_CONFIG_HOSTNAME))
+                               hostname = fnvlist_lookup_string(config,
+                                   ZPOOL_CONFIG_HOSTNAME);
+
+                       if (nvlist_exists(config, ZPOOL_CONFIG_TIMESTAMP))
+                               timestamp = fnvlist_lookup_uint64(config,
+                                   ZPOOL_CONFIG_TIMESTAMP);
+
+                       if (nvlist_exists(config, ZPOOL_CONFIG_HOSTID))
+                               hostid = fnvlist_lookup_uint64(config,
+                                   ZPOOL_CONFIG_HOSTID);
+
+                       (void) fprintf(stderr, gettext("cannot import '%s': "
+                           "pool was previously in use from another system.\n"
+                           "Last accessed by %s (hostid=%lx) at %s"
+                           "The pool can be imported, use 'zpool import -f' "
+                           "to import the pool.\n"), name, hostname,
+                           (unsigned long)hostid, ctime((time_t *)&timestamp));
                }
+
+               return (1);
        }
 
        if (zpool_import_props(g_zfs, config, newname, props, flags) != 0)
@@ -2170,6 +2438,16 @@ do_import(nvlist_t *config, const char *newname, const char *mntopts,
        if ((zhp = zpool_open_canfail(g_zfs, name)) == NULL)
                return (1);
 
+       /*
+        * Loading keys is best effort. We don't want to return immediately
+        * if it fails but we do want to give the error to the caller.
+        */
+       if (flags & ZFS_IMPORT_LOAD_KEYS) {
+               ret = zfs_crypto_attempt_load_keys(g_zfs, name);
+               if (ret != 0)
+                       ret = 1;
+       }
+
        if (zpool_get_state(zhp) != POOL_STATE_UNAVAIL &&
            !(flags & ZFS_IMPORT_ONLY) &&
            zpool_enable_datasets(zhp, mntopts, 0) != 0) {
@@ -2178,14 +2456,87 @@ do_import(nvlist_t *config, const char *newname, const char *mntopts,
        }
 
        zpool_close(zhp);
-       return (0);
+       return (ret);
 }
 
+/*
+ * zpool checkpoint <pool>
+ *       checkpoint --discard <pool>
+ *
+ *       -d         Discard the checkpoint from a checkpointed
+ *       --discard  pool.
+ *
+ * Checkpoints the specified pool, by taking a "snapshot" of its
+ * current state. A pool can only have one checkpoint at a time.
+ */
+int
+zpool_do_checkpoint(int argc, char **argv)
+{
+       boolean_t discard;
+       char *pool;
+       zpool_handle_t *zhp;
+       int c, err;
+
+       struct option long_options[] = {
+               {"discard", no_argument, NULL, 'd'},
+               {0, 0, 0, 0}
+       };
+
+       discard = B_FALSE;
+       while ((c = getopt_long(argc, argv, ":d", long_options, NULL)) != -1) {
+               switch (c) {
+               case 'd':
+                       discard = B_TRUE;
+                       break;
+               case '?':
+                       (void) fprintf(stderr, gettext("invalid option '%c'\n"),
+                           optopt);
+                       usage(B_FALSE);
+               }
+       }
+
+       argc -= optind;
+       argv += optind;
+
+       if (argc < 1) {
+               (void) fprintf(stderr, gettext("missing pool argument\n"));
+               usage(B_FALSE);
+       }
+
+       if (argc > 1) {
+               (void) fprintf(stderr, gettext("too many arguments\n"));
+               usage(B_FALSE);
+       }
+
+       pool = argv[0];
+
+       if ((zhp = zpool_open(g_zfs, pool)) == NULL) {
+               /* As a special case, check for use of '/' in the name */
+               if (strchr(pool, '/') != NULL)
+                       (void) fprintf(stderr, gettext("'zpool checkpoint' "
+                           "doesn't work on datasets. To save the state "
+                           "of a dataset from a specific point in time "
+                           "please use 'zfs snapshot'\n"));
+               return (1);
+       }
+
+       if (discard)
+               err = (zpool_discard_checkpoint(zhp) != 0);
+       else
+               err = (zpool_checkpoint(zhp) != 0);
+
+       zpool_close(zhp);
+
+       return (err);
+}
+
+#define        CHECKPOINT_OPT  1024
+
 /*
  * zpool import [-d dir] [-D]
- *       import [-o mntopts] [-o prop=value] ... [-R root] [-D]
+ *       import [-o mntopts] [-o prop=value] ... [-R root] [-D] [-l]
  *              [-d dir | -c cachefile] [-f] -a
- *       import [-o mntopts] [-o prop=value] ... [-R root] [-D]
+ *       import [-o mntopts] [-o prop=value] ... [-R root] [-D] [-l]
  *              [-d dir | -c cachefile] [-f] [-n] [-F] <pool | id> [newpool]
  *
  *      -c     Read pool information from a cachefile instead of searching
@@ -2220,11 +2571,16 @@ do_import(nvlist_t *config, const char *newname, const char *mntopts,
  *
  *       -a    Import all pools found.
  *
+ *       -l    Load encryption keys while importing.
+ *
  *       -o    Set property=value and/or temporary mount options (without '=').
  *
  *      -s     Scan using the default search path, the libblkid cache will
  *             not be consulted.
  *
+ *       --rewind-to-checkpoint
+ *             Import the pool and revert back to the checkpoint.
+ *
  * The import command scans for pools to import, and import pools based on pool
  * name and GUID.  The pool can also be renamed as part of the import process.
  */
@@ -2260,8 +2616,14 @@ zpool_do_import(int argc, char **argv)
        importargs_t idata = { 0 };
        char *endptr;
 
+       struct option long_options[] = {
+               {"rewind-to-checkpoint", no_argument, NULL, CHECKPOINT_OPT},
+               {0, 0, 0, 0}
+       };
+
        /* check options */
-       while ((c = getopt(argc, argv, ":aCc:d:DEfFmnNo:R:stT:VX")) != -1) {
+       while ((c = getopt_long(argc, argv, ":aCc:d:DEfFlmnNo:R:stT:VX",
+           long_options, NULL)) != -1) {
                switch (c) {
                case 'a':
                        do_all = B_TRUE;
@@ -2291,6 +2653,9 @@ zpool_do_import(int argc, char **argv)
                case 'F':
                        do_rewind = B_TRUE;
                        break;
+               case 'l':
+                       flags |= ZFS_IMPORT_LOAD_KEYS;
+                       break;
                case 'm':
                        flags |= ZFS_IMPORT_MISSING_LOG;
                        break;
@@ -2345,6 +2710,9 @@ zpool_do_import(int argc, char **argv)
                case 'X':
                        xtreme_rewind = B_TRUE;
                        break;
+               case CHECKPOINT_OPT:
+                       flags |= ZFS_IMPORT_CHECKPOINT;
+                       break;
                case ':':
                        (void) fprintf(stderr, gettext("missing argument for "
                            "'%c' option\n"), optopt);
@@ -2365,6 +2733,17 @@ zpool_do_import(int argc, char **argv)
                usage(B_FALSE);
        }
 
+       if ((flags & ZFS_IMPORT_LOAD_KEYS) && (flags & ZFS_IMPORT_ONLY)) {
+               (void) fprintf(stderr, gettext("-l is incompatible with -N\n"));
+               usage(B_FALSE);
+       }
+
+       if ((flags & ZFS_IMPORT_LOAD_KEYS) && !do_all && argc == 0) {
+               (void) fprintf(stderr, gettext("-l is only meaningful during "
+                   "an import\n"));
+               usage(B_FALSE);
+       }
+
        if ((dryrun || xtreme_rewind) && !do_rewind) {
                (void) fprintf(stderr,
                    gettext("-n or -X only meaningful with -F\n"));
@@ -2379,8 +2758,9 @@ zpool_do_import(int argc, char **argv)
 
        /* In the future, we can capture further policy and include it here */
        if (nvlist_alloc(&policy, NV_UNIQUE_NAME, 0) != 0 ||
-           nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, txg) != 0 ||
-           nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind_policy) != 0)
+           nvlist_add_uint64(policy, ZPOOL_LOAD_REQUEST_TXG, txg) != 0 ||
+           nvlist_add_uint32(policy, ZPOOL_LOAD_REWIND_POLICY,
+           rewind_policy) != 0)
                goto error;
 
        /* check argument count */
@@ -2472,16 +2852,9 @@ zpool_do_import(int argc, char **argv)
        idata.guid = searchguid;
        idata.cachefile = cachefile;
        idata.scan = do_scan;
+       idata.policy = policy;
 
-       /*
-        * Under Linux the zpool_find_import_impl() function leverages the
-        * taskq implementation to parallelize device scanning.  It is
-        * therefore necessary to initialize this functionality for the
-        * duration of the zpool_search_import() function.
-        */
-       thread_init();
        pools = zpool_search_import(g_zfs, &idata);
-       thread_fini();
 
        if (pools != NULL && idata.exists &&
            (argc == 1 || strcmp(argv[0], argv[1]) == 0)) {
@@ -2538,7 +2911,7 @@ zpool_do_import(int argc, char **argv)
                if (do_destroyed && pool_state != POOL_STATE_DESTROYED)
                        continue;
 
-               verify(nvlist_add_nvlist(config, ZPOOL_REWIND_POLICY,
+               verify(nvlist_add_nvlist(config, ZPOOL_LOAD_POLICY,
                    policy) == 0);
 
                if (argc == 0) {
@@ -2622,6 +2995,45 @@ error:
        return (err ? 1 : 0);
 }
 
+/*
+ * zpool sync [-f] [pool] ...
+ *
+ * -f (undocumented) force uberblock (and config including zpool cache file)
+ *    update.
+ *
+ * Sync the specified pool(s).
+ * Without arguments "zpool sync" will sync all pools.
+ * This command initiates TXG sync(s) and will return after the TXG(s) commit.
+ *
+ */
+static int
+zpool_do_sync(int argc, char **argv)
+{
+       int ret;
+       boolean_t force = B_FALSE;
+
+       /* check options */
+       while ((ret  = getopt(argc, argv, "f")) != -1) {
+               switch (ret) {
+               case 'f':
+                       force = B_TRUE;
+                       break;
+               case '?':
+                       (void) fprintf(stderr, gettext("invalid option '%c'\n"),
+                           optopt);
+                       usage(B_FALSE);
+               }
+       }
+
+       argc -= optind;
+       argv += optind;
+
+       /* if argc == 0 we will execute zpool_sync_one on all pools */
+       ret = for_each_pool(argc, argv, B_FALSE, NULL, zpool_sync_one, &force);
+
+       return (ret);
+}
+
 typedef struct iostat_cbdata {
        uint64_t cb_flags;
        int cb_name_flags;
@@ -2795,9 +3207,54 @@ print_iostat_labels(iostat_cbdata_t *cb, unsigned int force_column_width,
 
                }
        }
-       printf("\n");
 }
 
+
+/*
+ * print_cmd_columns - Print custom column titles from -c
+ *
+ * If the user specified the "zpool status|iostat -c" then print their custom
+ * column titles in the header.  For example, print_cmd_columns() would print
+ * the "  col1  col2" part of this:
+ *
+ * $ zpool iostat -vc 'echo col1=val1; echo col2=val2'
+ * ...
+ *           capacity     operations     bandwidth
+ * pool        alloc   free   read  write   read  write  col1  col2
+ * ----------  -----  -----  -----  -----  -----  -----  ----  ----
+ * mypool       269K  1008M      0      0    107    946
+ *   mirror     269K  1008M      0      0    107    946
+ *     sdb         -      -      0      0    102    473  val1  val2
+ *     sdc         -      -      0      0      5    473  val1  val2
+ * ----------  -----  -----  -----  -----  -----  -----  ----  ----
+ */
+void
+print_cmd_columns(vdev_cmd_data_list_t *vcdl, int use_dashes)
+{
+       int i, j;
+       vdev_cmd_data_t *data = &vcdl->data[0];
+
+       if (vcdl->count == 0 || data == NULL)
+               return;
+
+       /*
+        * Each vdev cmd should have the same column names unless the user did
+        * something weird with their cmd.  Just take the column names from the
+        * first vdev and assume it works for all of them.
+        */
+       for (i = 0; i < vcdl->uniq_cols_cnt; i++) {
+               printf("  ");
+               if (use_dashes) {
+                       for (j = 0; j < vcdl->uniq_cols_width[i]; j++)
+                               printf("-");
+               } else {
+                       printf("%*s", vcdl->uniq_cols_width[i],
+                           vcdl->uniq_cols[i]);
+               }
+       }
+}
+
+
 /*
  * Utility function to print out a line of dashes like:
  *
@@ -2866,7 +3323,6 @@ print_iostat_dashes(iostat_cbdata_t *cb, unsigned int force_column_width,
                                    "--------------------");
                }
        }
-       printf("\n");
 }
 
 
@@ -2908,12 +3364,22 @@ print_iostat_header_impl(iostat_cbdata_t *cb, unsigned int force_column_width,
 
 
        print_iostat_labels(cb, force_column_width, iostat_top_labels);
+       printf("\n");
 
        printf("%-*s", namewidth, title);
 
        print_iostat_labels(cb, force_column_width, iostat_bottom_labels);
+       if (cb->vcdl != NULL)
+               print_cmd_columns(cb->vcdl, 0);
+
+       printf("\n");
 
        print_iostat_separator_impl(cb, force_column_width);
+
+       if (cb->vcdl != NULL)
+               print_cmd_columns(cb->vcdl, 1);
+
+       printf("\n");
 }
 
 static void
@@ -3289,7 +3755,7 @@ print_iostat_latency(iostat_cbdata_t *cb, nvlist_t *oldnv,
        nva = calc_and_alloc_stats_ex(names, ARRAY_SIZE(names), oldnv, newnv);
 
        if (cb->cb_literal)
-               format = ZFS_NICENUM_RAW;
+               format = ZFS_NICENUM_RAWTIME;
        else
                format = ZFS_NICENUM_TIME;
 
@@ -3356,7 +3822,7 @@ print_vdev_stats(zpool_handle_t *zhp, const char *name, nvlist_t *oldnv,
     nvlist_t *newnv, iostat_cbdata_t *cb, int depth)
 {
        nvlist_t **oldchild, **newchild;
-       uint_t c, children;
+       uint_t c, children, oldchildren;
        vdev_stat_t *oldvs, *newvs, *calcvs;
        vdev_stat_t zerovs = { 0 };
        char *vname;
@@ -3367,6 +3833,9 @@ print_vdev_stats(zpool_handle_t *zhp, const char *name, nvlist_t *oldnv,
 
        calcvs = safe_malloc(sizeof (*calcvs));
 
+       if (strcmp(name, VDEV_TYPE_INDIRECT) == 0)
+               return (ret);
+
        if (oldnv != NULL) {
                verify(nvlist_lookup_uint64_array(oldnv,
                    ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&oldvs, &c) == 0);
@@ -3447,11 +3916,8 @@ print_vdev_stats(zpool_handle_t *zhp, const char *name, nvlist_t *oldnv,
                char *path;
                if (nvlist_lookup_string(newnv, ZPOOL_CONFIG_PATH,
                    &path) == 0) {
-                       if (!(cb->cb_flags & IOS_ANYHISTO_M))
-                               printf("  ");
+                       printf("  ");
                        zpool_print_cmd(cb->vcdl, zpool_get_name(zhp), path);
-                       if (cb->cb_flags & IOS_ANYHISTO_M)
-                               printf("\n");
                }
        }
 
@@ -3471,9 +3937,13 @@ children:
            &newchild, &children) != 0)
                return (ret);
 
-       if (oldnv && nvlist_lookup_nvlist_array(oldnv, ZPOOL_CONFIG_CHILDREN,
-           &oldchild, &c) != 0)
-               return (ret);
+       if (oldnv) {
+               if (nvlist_lookup_nvlist_array(oldnv, ZPOOL_CONFIG_CHILDREN,
+                   &oldchild, &oldchildren) != 0)
+                       return (ret);
+
+               children = MIN(oldchildren, children);
+       }
 
        for (c = 0; c < children; c++) {
                uint64_t ishole = B_FALSE, islog = B_FALSE;
@@ -3503,6 +3973,7 @@ children:
                    !cb->cb_vdev_names) {
                        print_iostat_dashes(cb, 0, "logs");
                }
+               printf("\n");
 
                for (c = 0; c < children; c++) {
                        uint64_t islog = B_FALSE;
@@ -3528,15 +3999,20 @@ children:
            &newchild, &children) != 0)
                return (ret);
 
-       if (oldnv && nvlist_lookup_nvlist_array(oldnv, ZPOOL_CONFIG_L2CACHE,
-           &oldchild, &c) != 0)
-               return (ret);
+       if (oldnv) {
+               if (nvlist_lookup_nvlist_array(oldnv, ZPOOL_CONFIG_L2CACHE,
+                   &oldchild, &oldchildren) != 0)
+                       return (ret);
+
+               children = MIN(oldchildren, children);
+       }
 
        if (children > 0) {
                if ((!(cb->cb_flags & IOS_ANYHISTO_M)) && !cb->cb_scripted &&
                    !cb->cb_vdev_names) {
                        print_iostat_dashes(cb, 0, "cache");
                }
+               printf("\n");
 
                for (c = 0; c < children; c++) {
                        vname = zpool_vdev_name(g_zfs, zhp, newchild[c],
@@ -3598,6 +4074,10 @@ print_iostat(zpool_handle_t *zhp, void *data)
        if ((ret != 0) && !(cb->cb_flags & IOS_ANYHISTO_M) &&
            !cb->cb_scripted && cb->cb_verbose && !cb->cb_vdev_names_count) {
                print_iostat_separator(cb);
+               if (cb->vcdl != NULL) {
+                       print_cmd_columns(cb->vcdl, 1);
+               }
+               printf("\n");
        }
 
        return (ret);
@@ -3633,7 +4113,7 @@ get_namewidth(zpool_handle_t *zhp, void *data)
                    &nvroot) == 0);
                unsigned int poolname_len = strlen(zpool_get_name(zhp));
                if (!cb->cb_verbose)
-                       cb->cb_namewidth = poolname_len;
+                       cb->cb_namewidth = MAX(poolname_len, cb->cb_namewidth);
                else
                        cb->cb_namewidth = MAX(poolname_len,
                            max_width(zhp, nvroot, 0, cb->cb_namewidth,
@@ -3986,11 +4466,91 @@ fsleep(float sec)
        nanosleep(&req, NULL);
 }
 
+/*
+ * Run one of the zpool status/iostat -c scripts with the help (-h) option and
+ * print the result.
+ *
+ * name:       Short name of the script ('iostat').
+ * path:       Full path to the script ('/usr/local/etc/zfs/zpool.d/iostat');
+ */
+static void
+print_zpool_script_help(char *name, char *path)
+{
+       char *argv[] = {path, "-h", NULL};
+       char **lines = NULL;
+       int lines_cnt = 0;
+       int rc;
+
+       rc = libzfs_run_process_get_stdout_nopath(path, argv, NULL, &lines,
+           &lines_cnt);
+       if (rc != 0 || lines == NULL || lines_cnt <= 0) {
+               if (lines != NULL)
+                       libzfs_free_str_array(lines, lines_cnt);
+               return;
+       }
+
+       for (int i = 0; i < lines_cnt; i++)
+               if (!is_blank_str(lines[i]))
+                       printf("  %-14s  %s\n", name, lines[i]);
+
+       libzfs_free_str_array(lines, lines_cnt);
+}
+
+/*
+ * Go though the zpool status/iostat -c scripts in the user's path, run their
+ * help option (-h), and print out the results.
+ */
+static void
+print_zpool_dir_scripts(char *dirpath)
+{
+       DIR *dir;
+       struct dirent *ent;
+       char fullpath[MAXPATHLEN];
+       struct stat dir_stat;
+
+       if ((dir = opendir(dirpath)) != NULL) {
+               /* print all the files and directories within directory */
+               while ((ent = readdir(dir)) != NULL) {
+                       sprintf(fullpath, "%s/%s", dirpath, ent->d_name);
+
+                       /* Print the scripts */
+                       if (stat(fullpath, &dir_stat) == 0)
+                               if (dir_stat.st_mode & S_IXUSR &&
+                                   S_ISREG(dir_stat.st_mode))
+                                       print_zpool_script_help(ent->d_name,
+                                           fullpath);
+               }
+               closedir(dir);
+       }
+}
+
+/*
+ * Print out help text for all zpool status/iostat -c scripts.
+ */
+static void
+print_zpool_script_list(char *subcommand)
+{
+       char *dir, *sp;
+
+       printf(gettext("Available 'zpool %s -c' commands:\n"), subcommand);
+
+       sp = zpool_get_cmd_search_path();
+       if (sp == NULL)
+               return;
+
+       dir = strtok(sp, ":");
+       while (dir != NULL) {
+               print_zpool_dir_scripts(dir);
+               dir = strtok(NULL, ":");
+       }
+
+       free(sp);
+}
 
 /*
- * zpool iostat [-c CMD] [-ghHLpPvy] [[-lq]|[-r|-w]] [-n name] [-T d|u]
- *             [[ pool ...]|[pool vdev ...]|[vdev ...]]
- *             [interval [count]]
+ * zpool iostat [[-c [script1,script2,...]] [-lq]|[-rw]] [-ghHLpPvy] [-n name]
+ *              [-T d|u] [[ pool ...]|[pool vdev ...]|[vdev ...]]
+ *              [interval [count]]
  *
  *     -c CMD  For each vdev, run command CMD
  *     -g      Display guid for individual vdev name.
@@ -4042,7 +4602,29 @@ zpool_do_iostat(int argc, char **argv)
        while ((c = getopt(argc, argv, "c:gLPT:vyhplqrwH")) != -1) {
                switch (c) {
                case 'c':
+                       if (cmd != NULL) {
+                               fprintf(stderr,
+                                   gettext("Can't set -c flag twice\n"));
+                               exit(1);
+                       }
+
+                       if (getenv("ZPOOL_SCRIPTS_ENABLED") != NULL &&
+                           !libzfs_envvar_is_set("ZPOOL_SCRIPTS_ENABLED")) {
+                               fprintf(stderr, gettext(
+                                   "Can't run -c, disabled by "
+                                   "ZPOOL_SCRIPTS_ENABLED.\n"));
+                               exit(1);
+                       }
+
+                       if ((getuid() <= 0 || geteuid() <= 0) &&
+                           !libzfs_envvar_is_set("ZPOOL_SCRIPTS_AS_ROOT")) {
+                               fprintf(stderr, gettext(
+                                   "Can't run -c with root privileges "
+                                   "unless ZPOOL_SCRIPTS_AS_ROOT is set.\n"));
+                               exit(1);
+                       }
                        cmd = optarg;
+                       verbose = B_TRUE;
                        break;
                case 'g':
                        guid = B_TRUE;
@@ -4085,8 +4667,8 @@ zpool_do_iostat(int argc, char **argv)
                        break;
                case '?':
                        if (optopt == 'c') {
-                               fprintf(stderr,
-                                   gettext("Missing CMD for -c\n"));
+                               print_zpool_script_list("iostat");
+                               exit(0);
                        } else {
                                fprintf(stderr,
                                    gettext("invalid option '%c'\n"), optopt);
@@ -4181,10 +4763,10 @@ zpool_do_iostat(int argc, char **argv)
                return (1);
        }
 
-       if ((l_histo || rq_histo) && (queues || latency)) {
+       if ((l_histo || rq_histo) && (cmd != NULL || latency || queues)) {
                pool_list_free(list);
                (void) fprintf(stderr,
-                   gettext("[-r|-w] isn't allowed with [-q|-l]\n"));
+                   gettext("[-r|-w] isn't allowed with [-c|-l|-q]\n"));
                usage(B_FALSE);
                return (1);
        }
@@ -4272,6 +4854,15 @@ zpool_do_iostat(int argc, char **argv)
                        if (timestamp_fmt != NODATE)
                                print_timestamp(timestamp_fmt);
 
+                       if (cmd != NULL && cb.cb_verbose &&
+                           !(cb.cb_flags & IOS_ANYHISTO_M)) {
+                               cb.vcdl = all_pools_for_each_vdev_run(argc,
+                                   argv, cmd, g_zfs, cb.cb_vdev_names,
+                                   cb.cb_vdev_names_count, cb.cb_name_flags);
+                       } else {
+                               cb.vcdl = NULL;
+                       }
+
                        /*
                         * If it's the first time and we're not skipping it,
                         * or either skip or verbose mode, print the header.
@@ -4290,16 +4881,9 @@ zpool_do_iostat(int argc, char **argv)
                                continue;
                        }
 
-                       if (cmd != NULL && cb.cb_verbose)
-                               cb.vcdl = all_pools_for_each_vdev_run(argc,
-                                   argv, cmd, g_zfs, cb.cb_vdev_names,
-                                   cb.cb_vdev_names_count, cb.cb_name_flags);
 
                        pool_list_iter(list, B_FALSE, print_iostat, &cb);
 
-                       if (cb.vcdl != NULL)
-                               free_vdev_cmd_data_list(cb.vcdl);
-
                        /*
                         * If there's more than one pool, and we're not in
                         * verbose mode (which prints a separator for us),
@@ -4314,7 +4898,14 @@ zpool_do_iostat(int argc, char **argv)
                            cb.cb_vdev_names_count)) &&
                            !cb.cb_scripted) {
                                print_iostat_separator(&cb);
+                               if (cb.vcdl != NULL)
+                                       print_cmd_columns(cb.vcdl, 1);
+                               printf("\n");
                        }
+
+                       if (cb.vcdl != NULL)
+                               free_vdev_cmd_data_list(cb.vcdl);
+
                }
 
                /*
@@ -4477,6 +5068,7 @@ print_one_column(zpool_prop_t prop, uint64_t value, boolean_t scripted,
 
        switch (prop) {
        case ZPOOL_PROP_EXPANDSZ:
+       case ZPOOL_PROP_CHECKPOINT:
                if (value == 0)
                        (void) strlcpy(propval, "-", sizeof (propval));
                else
@@ -4541,6 +5133,9 @@ print_list_stats(zpool_handle_t *zhp, const char *name, nvlist_t *nv,
                else
                        format = ZFS_NICENUM_1024;
 
+               if (strcmp(name, VDEV_TYPE_INDIRECT) == 0)
+                       return;
+
                if (scripted)
                        (void) printf("\t%s", name);
                else if (strlen(name) + depth > cb->cb_namewidth)
@@ -4561,6 +5156,8 @@ print_list_stats(zpool_handle_t *zhp, const char *name, nvlist_t *nv,
                    toplevel, format);
                print_one_column(ZPOOL_PROP_FREE, vs->vs_space - vs->vs_alloc,
                    scripted, toplevel, format);
+               print_one_column(ZPOOL_PROP_CHECKPOINT,
+                   vs->vs_checkpoint_space, scripted, toplevel, format);
                print_one_column(ZPOOL_PROP_EXPANDSZ, vs->vs_esize, scripted,
                    B_TRUE, format);
                print_one_column(ZPOOL_PROP_FRAGMENTATION,
@@ -4684,8 +5281,8 @@ zpool_do_list(int argc, char **argv)
        int ret = 0;
        list_cbdata_t cb = { 0 };
        static char default_props[] =
-           "name,size,allocated,free,expandsize,fragmentation,capacity,"
-           "dedupratio,health,altroot";
+           "name,size,allocated,free,checkpoint,expandsize,fragmentation,"
+           "capacity,dedupratio,health,altroot";
        char *props = default_props;
        float interval = 0;
        unsigned long count = 0;
@@ -4866,6 +5463,20 @@ zpool_do_attach_or_replace(int argc, char **argv, int replacing)
                return (1);
        }
 
+       /* unless manually specified use "ashift" pool property (if set) */
+       if (!nvlist_exists(props, ZPOOL_CONFIG_ASHIFT)) {
+               int intval;
+               zprop_source_t src;
+               char strval[ZPOOL_MAXPROPLEN];
+
+               intval = zpool_get_prop_int(zhp, ZPOOL_PROP_ASHIFT, &src);
+               if (src != ZPROP_SRC_DEFAULT) {
+                       (void) sprintf(strval, "%" PRId32, intval);
+                       verify(add_prop_list(ZPOOL_CONFIG_ASHIFT, strval,
+                           &props, B_TRUE) == 0);
+               }
+       }
+
        nvroot = make_root_vdev(zhp, props, force, B_FALSE, replacing, B_FALSE,
            argc, argv);
        if (nvroot == NULL) {
@@ -4984,6 +5595,7 @@ zpool_do_detach(int argc, char **argv)
  *     -o      Set property=value, or set mount options.
  *     -P      Display full path for vdev name.
  *     -R      Mount the split-off pool under an alternate root.
+ *     -l      Load encryption keys while importing.
  *
  * Splits the named pool and gives it the new pool name.  Devices to be split
  * off may be listed, provided that no more than one device is specified
@@ -5001,6 +5613,7 @@ zpool_do_split(int argc, char **argv)
        char *mntopts = NULL;
        splitflags_t flags;
        int c, ret = 0;
+       boolean_t loadkeys = B_FALSE;
        zpool_handle_t *zhp;
        nvlist_t *config, *props = NULL;
 
@@ -5009,7 +5622,7 @@ zpool_do_split(int argc, char **argv)
        flags.name_flags = 0;
 
        /* check options */
-       while ((c = getopt(argc, argv, ":gLR:no:P")) != -1) {
+       while ((c = getopt(argc, argv, ":gLR:lno:P")) != -1) {
                switch (c) {
                case 'g':
                        flags.name_flags |= VDEV_NAME_GUID;
@@ -5026,6 +5639,9 @@ zpool_do_split(int argc, char **argv)
                                usage(B_FALSE);
                        }
                        break;
+               case 'l':
+                       loadkeys = B_TRUE;
+                       break;
                case 'n':
                        flags.dryrun = B_TRUE;
                        break;
@@ -5064,6 +5680,12 @@ zpool_do_split(int argc, char **argv)
                usage(B_FALSE);
        }
 
+       if (!flags.import && loadkeys) {
+               (void) fprintf(stderr, gettext("loading keys is only "
+                   "valid when importing the pool\n"));
+               usage(B_FALSE);
+       }
+
        argc -= optind;
        argv += optind;
 
@@ -5116,6 +5738,13 @@ zpool_do_split(int argc, char **argv)
                nvlist_free(props);
                return (1);
        }
+
+       if (loadkeys) {
+               ret = zfs_crypto_attempt_load_keys(g_zfs, newpool);
+               if (ret != 0)
+                       ret = 1;
+       }
+
        if (zpool_get_state(zhp) != POOL_STATE_UNAVAIL &&
            zpool_enable_datasets(zhp, mntopts, 0) != 0) {
                ret = 1;
@@ -5206,11 +5835,9 @@ zpool_do_online(int argc, char **argv)
 /*
  * zpool offline [-ft] <pool> <device> ...
  *
- *     -f      Force the device into the offline state, even if doing
- *             so would appear to compromise pool availability.
- *             (not supported yet)
+ *     -f      Force the device into a faulted state.
  *
- *     -t      Only take the device off-line temporarily.  The offline
+ *     -t      Only take the device off-line temporarily.  The offline/faulted
  *             state will not be persistent across reboots.
  */
 /* ARGSUSED */
@@ -5222,14 +5849,17 @@ zpool_do_offline(int argc, char **argv)
        zpool_handle_t *zhp;
        int ret = 0;
        boolean_t istmp = B_FALSE;
+       boolean_t fault = B_FALSE;
 
        /* check options */
        while ((c = getopt(argc, argv, "ft")) != -1) {
                switch (c) {
+               case 'f':
+                       fault = B_TRUE;
+                       break;
                case 't':
                        istmp = B_TRUE;
                        break;
-               case 'f':
                case '?':
                        (void) fprintf(stderr, gettext("invalid option '%c'\n"),
                            optopt);
@@ -5256,8 +5886,22 @@ zpool_do_offline(int argc, char **argv)
                return (1);
 
        for (i = 1; i < argc; i++) {
-               if (zpool_vdev_offline(zhp, argv[i], istmp) != 0)
-                       ret = 1;
+               if (fault) {
+                       uint64_t guid = zpool_vdev_path_to_guid(zhp, argv[i]);
+                       vdev_aux_t aux;
+                       if (istmp == B_FALSE) {
+                               /* Force the fault to persist across imports */
+                               aux = VDEV_AUX_EXTERNAL_PERSIST;
+                       } else {
+                               aux = VDEV_AUX_EXTERNAL;
+                       }
+
+                       if (guid == 0 || zpool_vdev_fault(zhp, guid, aux) != 0)
+                               ret = 1;
+               } else {
+                       if (zpool_vdev_offline(zhp, argv[i], istmp) != 0)
+                               ret = 1;
+               }
        }
 
        zpool_close(zhp);
@@ -5329,8 +5973,10 @@ zpool_do_clear(int argc, char **argv)
 
        /* In future, further rewind policy choices can be passed along here */
        if (nvlist_alloc(&policy, NV_UNIQUE_NAME, 0) != 0 ||
-           nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind_policy) != 0)
+           nvlist_add_uint32(policy, ZPOOL_LOAD_REWIND_POLICY,
+           rewind_policy) != 0) {
                return (1);
+       }
 
        pool = argv[0];
        device = argc == 2 ? argv[1] : NULL;
@@ -5406,12 +6052,14 @@ zpool_do_reopen(int argc, char **argv)
 {
        int c;
        int ret = 0;
-       zpool_handle_t *zhp;
-       char *pool;
+       boolean_t scrub_restart = B_TRUE;
 
        /* check options */
-       while ((c = getopt(argc, argv, "")) != -1) {
+       while ((c = getopt(argc, argv, "n")) != -1) {
                switch (c) {
+               case 'n':
+                       scrub_restart = B_FALSE;
+                       break;
                case '?':
                        (void) fprintf(stderr, gettext("invalid option '%c'\n"),
                            optopt);
@@ -5419,25 +6067,13 @@ zpool_do_reopen(int argc, char **argv)
                }
        }
 
-       argc--;
-       argv++;
-
-       if (argc < 1) {
-               (void) fprintf(stderr, gettext("missing pool name\n"));
-               usage(B_FALSE);
-       }
-
-       if (argc > 1) {
-               (void) fprintf(stderr, gettext("too many arguments\n"));
-               usage(B_FALSE);
-       }
+       argc -= optind;
+       argv += optind;
 
-       pool = argv[0];
-       if ((zhp = zpool_open_canfail(g_zfs, pool)) == NULL)
-               return (1);
+       /* if argc == 0 we will execute zpool_reopen_one on all pools */
+       ret = for_each_pool(argc, argv, B_TRUE, NULL, zpool_reopen_one,
+           &scrub_restart);
 
-       ret = zpool_reopen(zhp);
-       zpool_close(zhp);
        return (ret);
 }
 
@@ -5445,8 +6081,35 @@ typedef struct scrub_cbdata {
        int     cb_type;
        int     cb_argc;
        char    **cb_argv;
+       pool_scrub_cmd_t cb_scrub_cmd;
 } scrub_cbdata_t;
 
+static boolean_t
+zpool_has_checkpoint(zpool_handle_t *zhp)
+{
+       nvlist_t *config, *nvroot;
+
+       config = zpool_get_config(zhp, NULL);
+
+       if (config != NULL) {
+               pool_checkpoint_stat_t *pcs = NULL;
+               uint_t c;
+
+               nvroot = fnvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE);
+               (void) nvlist_lookup_uint64_array(nvroot,
+                   ZPOOL_CONFIG_CHECKPOINT_STATS, (uint64_t **)&pcs, &c);
+
+               if (pcs == NULL || pcs->pcs_state == CS_NONE)
+                       return (B_FALSE);
+
+               assert(pcs->pcs_state == CS_CHECKPOINT_EXISTS ||
+                   pcs->pcs_state == CS_CHECKPOINT_DISCARDING);
+               return (B_TRUE);
+       }
+
+       return (B_FALSE);
+}
+
 int
 scrub_callback(zpool_handle_t *zhp, void *data)
 {
@@ -5462,15 +6125,23 @@ scrub_callback(zpool_handle_t *zhp, void *data)
                return (1);
        }
 
-       err = zpool_scan(zhp, cb->cb_type);
+       err = zpool_scan(zhp, cb->cb_type, cb->cb_scrub_cmd);
+
+       if (err == 0 && zpool_has_checkpoint(zhp) &&
+           cb->cb_type == POOL_SCAN_SCRUB) {
+               (void) printf(gettext("warning: will not scrub state that "
+                   "belongs to the checkpoint of pool '%s'\n"),
+                   zpool_get_name(zhp));
+       }
 
        return (err != 0);
 }
 
 /*
- * zpool scrub [-s] <pool> ...
+ * zpool scrub [-s | -p] <pool> ...
  *
  *     -s      Stop.  Stops any in-progress scrub.
+ *     -p      Pause. Pause in-progress scrub.
  */
 int
 zpool_do_scrub(int argc, char **argv)
@@ -5479,13 +6150,17 @@ zpool_do_scrub(int argc, char **argv)
        scrub_cbdata_t cb;
 
        cb.cb_type = POOL_SCAN_SCRUB;
+       cb.cb_scrub_cmd = POOL_SCRUB_NORMAL;
 
        /* check options */
-       while ((c = getopt(argc, argv, "s")) != -1) {
+       while ((c = getopt(argc, argv, "sp")) != -1) {
                switch (c) {
                case 's':
                        cb.cb_type = POOL_SCAN_NONE;
                        break;
+               case 'p':
+                       cb.cb_scrub_cmd = POOL_SCRUB_PAUSE;
+                       break;
                case '?':
                        (void) fprintf(stderr, gettext("invalid option '%c'\n"),
                            optopt);
@@ -5493,6 +6168,13 @@ zpool_do_scrub(int argc, char **argv)
                }
        }
 
+       if (cb.cb_type == POOL_SCAN_NONE &&
+           cb.cb_scrub_cmd == POOL_SCRUB_PAUSE) {
+               (void) fprintf(stderr, gettext("invalid option combination: "
+                   "-s and -p are mutually exclusive\n"));
+               usage(B_FALSE);
+       }
+
        cb.cb_argc = argc;
        cb.cb_argv = argv;
        argc -= optind;
@@ -5509,15 +6191,17 @@ zpool_do_scrub(int argc, char **argv)
 /*
  * Print out detailed scrub status.
  */
-void
+static void
 print_scan_status(pool_scan_stat_t *ps)
 {
-       time_t start, end;
-       uint64_t elapsed, mins_left, hours_left;
-       uint64_t pass_exam, examined, total;
-       uint_t rate;
+       time_t start, end, pause;
+       uint64_t total_secs_left;
+       uint64_t elapsed, secs_left, mins_left, hours_left, days_left;
+       uint64_t pass_scanned, scanned, pass_issued, issued, total;
+       uint64_t scan_rate, issue_rate;
        double fraction_done;
-       char processed_buf[7], examined_buf[7], total_buf[7], rate_buf[7];
+       char processed_buf[7], scanned_buf[7], issued_buf[7], total_buf[7];
+       char srate_buf[7], irate_buf[7];
 
        (void) printf(gettext("  scan: "));
 
@@ -5530,30 +6214,36 @@ print_scan_status(pool_scan_stat_t *ps)
 
        start = ps->pss_start_time;
        end = ps->pss_end_time;
-       zfs_nicenum(ps->pss_processed, processed_buf, sizeof (processed_buf));
+       pause = ps->pss_pass_scrub_pause;
+
+       zfs_nicebytes(ps->pss_processed, processed_buf, sizeof (processed_buf));
 
        assert(ps->pss_func == POOL_SCAN_SCRUB ||
            ps->pss_func == POOL_SCAN_RESILVER);
-       /*
-        * Scan is finished or canceled.
-        */
+
+       /* Scan is finished or canceled. */
        if (ps->pss_state == DSS_FINISHED) {
-               uint64_t minutes_taken = (end - start) / 60;
-               char *fmt = NULL;
+               total_secs_left = end - start;
+               days_left = total_secs_left / 60 / 60 / 24;
+               hours_left = (total_secs_left / 60 / 60) % 24;
+               mins_left = (total_secs_left / 60) % 60;
+               secs_left = (total_secs_left % 60);
 
                if (ps->pss_func == POOL_SCAN_SCRUB) {
-                       fmt = gettext("scrub repaired %s in %lluh%um with "
-                           "%llu errors on %s");
+                       (void) printf(gettext("scrub repaired %s "
+                           "in %llu days %02llu:%02llu:%02llu "
+                           "with %llu errors on %s"), processed_buf,
+                           (u_longlong_t)days_left, (u_longlong_t)hours_left,
+                           (u_longlong_t)mins_left, (u_longlong_t)secs_left,
+                           (u_longlong_t)ps->pss_errors, ctime(&end));
                } else if (ps->pss_func == POOL_SCAN_RESILVER) {
-                       fmt = gettext("resilvered %s in %lluh%um with "
-                           "%llu errors on %s");
+                       (void) printf(gettext("resilvered %s "
+                           "in %llu days %02llu:%02llu:%02llu "
+                           "with %llu errors on %s"), processed_buf,
+                           (u_longlong_t)days_left, (u_longlong_t)hours_left,
+                           (u_longlong_t)mins_left, (u_longlong_t)secs_left,
+                           (u_longlong_t)ps->pss_errors, ctime(&end));
                }
-               /* LINTED */
-               (void) printf(fmt, processed_buf,
-                   (u_longlong_t)(minutes_taken / 60),
-                   (uint_t)(minutes_taken % 60),
-                   (u_longlong_t)ps->pss_errors,
-                   ctime((time_t *)&end));
                return;
        } else if (ps->pss_state == DSS_CANCELED) {
                if (ps->pss_func == POOL_SCAN_SCRUB) {
@@ -5568,54 +6258,256 @@ print_scan_status(pool_scan_stat_t *ps)
 
        assert(ps->pss_state == DSS_SCANNING);
 
-       /*
-        * Scan is in progress.
-        */
+       /* Scan is in progress. Resilvers can't be paused. */
        if (ps->pss_func == POOL_SCAN_SCRUB) {
-               (void) printf(gettext("scrub in progress since %s"),
-                   ctime(&start));
+               if (pause == 0) {
+                       (void) printf(gettext("scrub in progress since %s"),
+                           ctime(&start));
+               } else {
+                       (void) printf(gettext("scrub paused since %s"),
+                           ctime(&pause));
+                       (void) printf(gettext("\tscrub started on %s"),
+                           ctime(&start));
+               }
        } else if (ps->pss_func == POOL_SCAN_RESILVER) {
                (void) printf(gettext("resilver in progress since %s"),
                    ctime(&start));
        }
 
-       examined = ps->pss_examined ? ps->pss_examined : 1;
+       scanned = ps->pss_examined;
+       pass_scanned = ps->pss_pass_exam;
+       issued = ps->pss_issued;
+       pass_issued = ps->pss_pass_issued;
        total = ps->pss_to_examine;
-       fraction_done = (double)examined / total;
 
-       /* elapsed time for this pass */
+       /* we are only done with a block once we have issued the IO for it */
+       fraction_done = (double)issued / total;
+
+       /* elapsed time for this pass, rounding up to 1 if it's 0 */
        elapsed = time(NULL) - ps->pss_pass_start;
-       elapsed = elapsed ? elapsed : 1;
-       pass_exam = ps->pss_pass_exam ? ps->pss_pass_exam : 1;
-       rate = pass_exam / elapsed;
-       rate = rate ? rate : 1;
-       mins_left = ((total - examined) / rate) / 60;
-       hours_left = mins_left / 60;
+       elapsed -= ps->pss_pass_scrub_spent_paused;
+       elapsed = (elapsed != 0) ? elapsed : 1;
+
+       scan_rate = pass_scanned / elapsed;
+       issue_rate = pass_issued / elapsed;
+       total_secs_left = (issue_rate != 0) ?
+           ((total - issued) / issue_rate) : UINT64_MAX;
+
+       days_left = total_secs_left / 60 / 60 / 24;
+       hours_left = (total_secs_left / 60 / 60) % 24;
+       mins_left = (total_secs_left / 60) % 60;
+       secs_left = (total_secs_left % 60);
+
+       /* format all of the numbers we will be reporting */
+       zfs_nicebytes(scanned, scanned_buf, sizeof (scanned_buf));
+       zfs_nicebytes(issued, issued_buf, sizeof (issued_buf));
+       zfs_nicebytes(total, total_buf, sizeof (total_buf));
+       zfs_nicebytes(scan_rate, srate_buf, sizeof (srate_buf));
+       zfs_nicebytes(issue_rate, irate_buf, sizeof (irate_buf));
+
+       /* do not print estimated time if we have a paused scrub */
+       if (pause == 0) {
+               (void) printf(gettext("\t%s scanned at %s/s, "
+                   "%s issued at %s/s, %s total\n"),
+                   scanned_buf, srate_buf, issued_buf, irate_buf, total_buf);
+       } else {
+               (void) printf(gettext("\t%s scanned, %s issued, %s total\n"),
+                   scanned_buf, issued_buf, total_buf);
+       }
+
+       if (ps->pss_func == POOL_SCAN_RESILVER) {
+               (void) printf(gettext("\t%s resilvered, %.2f%% done"),
+                   processed_buf, 100 * fraction_done);
+       } else if (ps->pss_func == POOL_SCAN_SCRUB) {
+               (void) printf(gettext("\t%s repaired, %.2f%% done"),
+                   processed_buf, 100 * fraction_done);
+       }
+
+       if (pause == 0) {
+               if (issue_rate >= 10 * 1024 * 1024) {
+                       (void) printf(gettext(", %llu days "
+                           "%02llu:%02llu:%02llu to go\n"),
+                           (u_longlong_t)days_left, (u_longlong_t)hours_left,
+                           (u_longlong_t)mins_left, (u_longlong_t)secs_left);
+               } else {
+                       (void) printf(gettext(", no estimated "
+                           "completion time\n"));
+               }
+       } else {
+               (void) printf(gettext("\n"));
+       }
+}
+
+/*
+ * As we don't scrub checkpointed blocks, we want to warn the
+ * user that we skipped scanning some blocks if a checkpoint exists
+ * or existed at any time during the scan.
+ */
+static void
+print_checkpoint_scan_warning(pool_scan_stat_t *ps, pool_checkpoint_stat_t *pcs)
+{
+       if (ps == NULL || pcs == NULL)
+               return;
+
+       if (pcs->pcs_state == CS_NONE ||
+           pcs->pcs_state == CS_CHECKPOINT_DISCARDING)
+               return;
+
+       assert(pcs->pcs_state == CS_CHECKPOINT_EXISTS);
+
+       if (ps->pss_state == DSS_NONE)
+               return;
+
+       if ((ps->pss_state == DSS_FINISHED || ps->pss_state == DSS_CANCELED) &&
+           ps->pss_end_time < pcs->pcs_start_time)
+               return;
+
+       if (ps->pss_state == DSS_FINISHED || ps->pss_state == DSS_CANCELED) {
+               (void) printf(gettext("    scan warning: skipped blocks "
+                   "that are only referenced by the checkpoint.\n"));
+       } else {
+               assert(ps->pss_state == DSS_SCANNING);
+               (void) printf(gettext("    scan warning: skipping blocks "
+                   "that are only referenced by the checkpoint.\n"));
+       }
+}
+
+/*
+ * Print out detailed removal status.
+ */
+static void
+print_removal_status(zpool_handle_t *zhp, pool_removal_stat_t *prs)
+{
+       char copied_buf[7], examined_buf[7], total_buf[7], rate_buf[7];
+       time_t start, end;
+       nvlist_t *config, *nvroot;
+       nvlist_t **child;
+       uint_t children;
+       char *vdev_name;
+
+       if (prs == NULL || prs->prs_state == DSS_NONE)
+               return;
+
+       /*
+        * Determine name of vdev.
+        */
+       config = zpool_get_config(zhp, NULL);
+       nvroot = fnvlist_lookup_nvlist(config,
+           ZPOOL_CONFIG_VDEV_TREE);
+       verify(nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN,
+           &child, &children) == 0);
+       assert(prs->prs_removing_vdev < children);
+       vdev_name = zpool_vdev_name(g_zfs, zhp,
+           child[prs->prs_removing_vdev], B_TRUE);
+
+       (void) printf(gettext("remove: "));
 
-       zfs_nicenum(examined, examined_buf, sizeof (examined_buf));
-       zfs_nicenum(total, total_buf, sizeof (total_buf));
-       zfs_nicenum(rate, rate_buf, sizeof (rate_buf));
+       start = prs->prs_start_time;
+       end = prs->prs_end_time;
+       zfs_nicenum(prs->prs_copied, copied_buf, sizeof (copied_buf));
 
        /*
-        * do not print estimated time if hours_left is more than 30 days
+        * Removal is finished or canceled.
         */
-       (void) printf(gettext("\t%s scanned out of %s at %s/s"),
-           examined_buf, total_buf, rate_buf);
-       if (hours_left < (30 * 24)) {
-               (void) printf(gettext(", %lluh%um to go\n"),
-                   (u_longlong_t)hours_left, (uint_t)(mins_left % 60));
+       if (prs->prs_state == DSS_FINISHED) {
+               uint64_t minutes_taken = (end - start) / 60;
+
+               (void) printf(gettext("Removal of vdev %llu copied %s "
+                   "in %lluh%um, completed on %s"),
+                   (longlong_t)prs->prs_removing_vdev,
+                   copied_buf,
+                   (u_longlong_t)(minutes_taken / 60),
+                   (uint_t)(minutes_taken % 60),
+                   ctime((time_t *)&end));
+       } else if (prs->prs_state == DSS_CANCELED) {
+               (void) printf(gettext("Removal of %s canceled on %s"),
+                   vdev_name, ctime(&end));
        } else {
+               uint64_t copied, total, elapsed, mins_left, hours_left;
+               double fraction_done;
+               uint_t rate;
+
+               assert(prs->prs_state == DSS_SCANNING);
+
+               /*
+                * Removal is in progress.
+                */
                (void) printf(gettext(
-                   ", (scan is slow, no estimated time)\n"));
+                   "Evacuation of %s in progress since %s"),
+                   vdev_name, ctime(&start));
+
+               copied = prs->prs_copied > 0 ? prs->prs_copied : 1;
+               total = prs->prs_to_copy;
+               fraction_done = (double)copied / total;
+
+               /* elapsed time for this pass */
+               elapsed = time(NULL) - prs->prs_start_time;
+               elapsed = elapsed > 0 ? elapsed : 1;
+               rate = copied / elapsed;
+               rate = rate > 0 ? rate : 1;
+               mins_left = ((total - copied) / rate) / 60;
+               hours_left = mins_left / 60;
+
+               zfs_nicenum(copied, examined_buf, sizeof (examined_buf));
+               zfs_nicenum(total, total_buf, sizeof (total_buf));
+               zfs_nicenum(rate, rate_buf, sizeof (rate_buf));
+
+               /*
+                * do not print estimated time if hours_left is more than
+                * 30 days
+                */
+               (void) printf(gettext("    %s copied out of %s at %s/s, "
+                   "%.2f%% done"),
+                   examined_buf, total_buf, rate_buf, 100 * fraction_done);
+               if (hours_left < (30 * 24)) {
+                       (void) printf(gettext(", %lluh%um to go\n"),
+                           (u_longlong_t)hours_left, (uint_t)(mins_left % 60));
+               } else {
+                       (void) printf(gettext(
+                           ", (copy is slow, no estimated time)\n"));
+               }
        }
 
-       if (ps->pss_func == POOL_SCAN_RESILVER) {
-               (void) printf(gettext("\t%s resilvered, %.2f%% done\n"),
-                   processed_buf, 100 * fraction_done);
-       } else if (ps->pss_func == POOL_SCAN_SCRUB) {
-               (void) printf(gettext("\t%s repaired, %.2f%% done\n"),
-                   processed_buf, 100 * fraction_done);
+       if (prs->prs_mapping_memory > 0) {
+               char mem_buf[7];
+               zfs_nicenum(prs->prs_mapping_memory, mem_buf, sizeof (mem_buf));
+               (void) printf(gettext("    %s memory used for "
+                   "removed device mappings\n"),
+                   mem_buf);
+       }
+}
+
+static void
+print_checkpoint_status(pool_checkpoint_stat_t *pcs)
+{
+       time_t start;
+       char space_buf[7];
+
+       if (pcs == NULL || pcs->pcs_state == CS_NONE)
+               return;
+
+       (void) printf(gettext("checkpoint: "));
+
+       start = pcs->pcs_start_time;
+       zfs_nicenum(pcs->pcs_space, space_buf, sizeof (space_buf));
+
+       if (pcs->pcs_state == CS_CHECKPOINT_EXISTS) {
+               char *date = ctime(&start);
+
+               /*
+                * ctime() adds a newline at the end of the generated
+                * string, thus the weird format specifier and the
+                * strlen() call used to chop it off from the output.
+                */
+               (void) printf(gettext("created %.*s, consumes %s\n"),
+                   (int)(strlen(date) - 1), date, space_buf);
+               return;
        }
+
+       assert(pcs->pcs_state == CS_CHECKPOINT_DISCARDING);
+
+       (void) printf(gettext("discarding, %s remaining.\n"),
+           space_buf);
 }
 
 static void
@@ -5697,6 +6589,7 @@ print_dedup_stats(nvlist_t *config)
        ddt_stat_t *dds;
        ddt_object_t *ddo;
        uint_t c;
+       char dspace[6], mspace[6];
 
        /*
         * If the pool was faulted then we may not have been able to
@@ -5714,10 +6607,12 @@ print_dedup_stats(nvlist_t *config)
                return;
        }
 
-       (void) printf("DDT entries %llu, size %llu on disk, %llu in core\n",
+       zfs_nicebytes(ddo->ddo_dspace, dspace, sizeof (dspace));
+       zfs_nicebytes(ddo->ddo_mspace, mspace, sizeof (mspace));
+       (void) printf("DDT entries %llu, size %s on disk, %s in core\n",
            (u_longlong_t)ddo->ddo_count,
-           (u_longlong_t)ddo->ddo_dspace,
-           (u_longlong_t)ddo->ddo_mspace);
+           dspace,
+           mspace);
 
        verify(nvlist_lookup_uint64_array(config, ZPOOL_CONFIG_DDT_STATS,
            (uint64_t **)&dds, &c) == 0);
@@ -5780,11 +6675,11 @@ status_callback(zpool_handle_t *zhp, void *data)
        else
                (void) printf("\n");
 
-       verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
-           &nvroot) == 0);
+       nvroot = fnvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE);
        verify(nvlist_lookup_uint64_array(nvroot, ZPOOL_CONFIG_VDEV_STATS,
            (uint64_t **)&vs, &c) == 0);
-       health = zpool_state_to_name(vs->vs_state, vs->vs_aux);
+
+       health = zpool_get_state_str(zhp);
 
        (void) printf(gettext("  pool: %s\n"), zpool_get_name(zhp));
        (void) printf(gettext(" state: %s\n"), health);
@@ -5953,6 +6848,15 @@ status_callback(zpool_handle_t *zhp, void *data)
                    "to be recovered.\n"));
                break;
 
+       case ZPOOL_STATUS_IO_FAILURE_MMP:
+               (void) printf(gettext("status: The pool is suspended because "
+                   "multihost writes failed or were delayed;\n\tanother "
+                   "system could import the pool undetected.\n"));
+               (void) printf(gettext("action: Make sure the pool's devices "
+                   "are connected, then reboot your system and\n\timport the "
+                   "pool.\n"));
+               break;
+
        case ZPOOL_STATUS_IO_FAILURE_WAIT:
        case ZPOOL_STATUS_IO_FAILURE_CONTINUE:
                (void) printf(gettext("status: One or more devices are "
@@ -5996,6 +6900,17 @@ status_callback(zpool_handle_t *zhp, void *data)
                            "run 'zpool scrub'.\n"));
                        break;
 
+               case ZPOOL_ERRATA_ZOL_6845_ENCRYPTION:
+                       (void) printf(gettext("\tExisting encrypted datasets "
+                           "contain an on-disk incompatibility\n\twhich "
+                           "needs to be corrected.\n"));
+                       (void) printf(gettext("action: To correct the issue "
+                           "backup existing encrypted datasets to new\n\t"
+                           "encrypted datasets and destroy the old ones. "
+                           "'zfs mount -o ro' can\n\tbe used to temporarily "
+                           "mount existing encrypted datasets readonly.\n"));
+                       break;
+
                default:
                        /*
                         * All errata which allow the pool to be imported
@@ -6020,11 +6935,21 @@ status_callback(zpool_handle_t *zhp, void *data)
                uint64_t nerr;
                nvlist_t **spares, **l2cache;
                uint_t nspares, nl2cache;
+               pool_checkpoint_stat_t *pcs = NULL;
                pool_scan_stat_t *ps = NULL;
+               pool_removal_stat_t *prs = NULL;
 
+               (void) nvlist_lookup_uint64_array(nvroot,
+                   ZPOOL_CONFIG_CHECKPOINT_STATS, (uint64_t **)&pcs, &c);
                (void) nvlist_lookup_uint64_array(nvroot,
                    ZPOOL_CONFIG_SCAN_STATS, (uint64_t **)&ps, &c);
+               (void) nvlist_lookup_uint64_array(nvroot,
+                   ZPOOL_CONFIG_REMOVAL_STATS, (uint64_t **)&prs, &c);
+
                print_scan_status(ps);
+               print_checkpoint_scan_warning(ps, pcs);
+               print_removal_status(zhp, prs);
+               print_checkpoint_status(pcs);
 
                cbp->cb_namewidth = max_width(zhp, nvroot, 0, 0,
                    cbp->cb_name_flags | VDEV_NAME_TYPE_ID);
@@ -6032,9 +6957,14 @@ status_callback(zpool_handle_t *zhp, void *data)
                        cbp->cb_namewidth = 10;
 
                (void) printf(gettext("config:\n\n"));
-               (void) printf(gettext("\t%-*s  %-8s %5s %5s %5s\n"),
+               (void) printf(gettext("\t%-*s  %-8s %5s %5s %5s"),
                    cbp->cb_namewidth, "NAME", "STATE", "READ", "WRITE",
                    "CKSUM");
+
+               if (cbp->vcdl != NULL)
+                       print_cmd_columns(cbp->vcdl, 0);
+
+               printf("\n");
                print_status_config(zhp, cbp, zpool_get_name(zhp), nvroot, 0,
                    B_FALSE);
 
@@ -6094,7 +7024,8 @@ status_callback(zpool_handle_t *zhp, void *data)
 }
 
 /*
- * zpool status [-c CMD] [-gLPvx] [-T d|u] [pool] ... [interval [count]]
+ * zpool status [-c [script1,script2,...]] [-gLPvx] [-T d|u] [pool] ...
+ *              [interval [count]]
  *
  *     -c CMD  For each vdev, run command CMD
  *     -g      Display guid for individual vdev name.
@@ -6121,6 +7052,27 @@ zpool_do_status(int argc, char **argv)
        while ((c = getopt(argc, argv, "c:gLPvxDT:")) != -1) {
                switch (c) {
                case 'c':
+                       if (cmd != NULL) {
+                               fprintf(stderr,
+                                   gettext("Can't set -c flag twice\n"));
+                               exit(1);
+                       }
+
+                       if (getenv("ZPOOL_SCRIPTS_ENABLED") != NULL &&
+                           !libzfs_envvar_is_set("ZPOOL_SCRIPTS_ENABLED")) {
+                               fprintf(stderr, gettext(
+                                   "Can't run -c, disabled by "
+                                   "ZPOOL_SCRIPTS_ENABLED.\n"));
+                               exit(1);
+                       }
+
+                       if ((getuid() <= 0 || geteuid() <= 0) &&
+                           !libzfs_envvar_is_set("ZPOOL_SCRIPTS_AS_ROOT")) {
+                               fprintf(stderr, gettext(
+                                   "Can't run -c with root privileges "
+                                   "unless ZPOOL_SCRIPTS_AS_ROOT is set.\n"));
+                               exit(1);
+                       }
                        cmd = optarg;
                        break;
                case 'g':
@@ -6146,8 +7098,8 @@ zpool_do_status(int argc, char **argv)
                        break;
                case '?':
                        if (optopt == 'c') {
-                               fprintf(stderr,
-                                   gettext("Missing CMD for -c\n"));
+                               print_zpool_script_list("status");
+                               exit(0);
                        } else {
                                fprintf(stderr,
                                    gettext("invalid option '%c'\n"), optopt);
@@ -6792,6 +7744,11 @@ get_history_one(zpool_handle_t *zhp, void *data)
                                dump_nvlist(fnvlist_lookup_nvlist(rec,
                                    ZPOOL_HIST_OUTPUT_NVL), 8);
                        }
+                       if (nvlist_exists(rec, ZPOOL_HIST_ERRNO)) {
+                               (void) printf("    errno: %lld\n",
+                                   (longlong_t)fnvlist_lookup_int64(rec,
+                                   ZPOOL_HIST_ERRNO));
+                       }
                } else {
                        if (!cb->internal)
                                continue;
@@ -6876,10 +7833,11 @@ typedef struct ev_opts {
        int scripted;
        int follow;
        int clear;
+       char poolname[ZFS_MAX_DATASET_NAME_LEN];
 } ev_opts_t;
 
 static void
-zpool_do_events_short(nvlist_t *nvl)
+zpool_do_events_short(nvlist_t *nvl, ev_opts_t *opts)
 {
        char ctime_str[26], str[32], *ptr;
        int64_t *tv;
@@ -6892,7 +7850,10 @@ zpool_do_events_short(nvlist_t *nvl)
        (void) strncpy(str+7, ctime_str+20, 4);         /* '1993' */
        (void) strncpy(str+12, ctime_str+11, 8);        /* '21:49:08' */
        (void) sprintf(str+20, ".%09lld", (longlong_t)tv[1]); /* '.123456789' */
-       (void) printf(gettext("%s "), str);
+       if (opts->scripted)
+               (void) printf(gettext("%s\t"), str);
+       else
+               (void) printf(gettext("%s "), str);
 
        verify(nvlist_lookup_string(nvl, FM_CLASS, &ptr) == 0);
        (void) printf(gettext("%s\n"), ptr);
@@ -7140,6 +8101,7 @@ zpool_do_events_next(ev_opts_t *opts)
 {
        nvlist_t *nvl;
        int zevent_fd, ret, dropped;
+       char *pool;
 
        zevent_fd = open(ZFS_DEV, O_RDWR);
        VERIFY(zevent_fd >= 0);
@@ -7156,7 +8118,12 @@ zpool_do_events_next(ev_opts_t *opts)
                if (dropped > 0)
                        (void) printf(gettext("dropped %d events\n"), dropped);
 
-               zpool_do_events_short(nvl);
+               if (strlen(opts->poolname) > 0 &&
+                   nvlist_lookup_string(nvl, FM_FMRI_ZFS_POOL, &pool) == 0 &&
+                   strcmp(opts->poolname, pool) != 0)
+                       continue;
+
+               zpool_do_events_short(nvl, opts);
 
                if (opts->verbose) {
                        zpool_do_events_nvprint(nvl, 8);
@@ -7185,7 +8152,7 @@ zpool_do_events_clear(ev_opts_t *opts)
 }
 
 /*
- * zpool events [-vfc]
+ * zpool events [-vHf [pool] | -c]
  *
  * Displays events logs by ZFS.
  */
@@ -7220,6 +8187,25 @@ zpool_do_events(int argc, char **argv)
        argc -= optind;
        argv += optind;
 
+       if (argc > 1) {
+               (void) fprintf(stderr, gettext("too many arguments\n"));
+               usage(B_FALSE);
+       } else if (argc == 1) {
+               (void) strlcpy(opts.poolname, argv[0], sizeof (opts.poolname));
+               if (!zfs_name_valid(opts.poolname, ZFS_TYPE_POOL)) {
+                       (void) fprintf(stderr,
+                           gettext("invalid pool name '%s'\n"), opts.poolname);
+                       usage(B_FALSE);
+               }
+       }
+
+       if ((argc == 1 || opts.verbose || opts.scripted || opts.follow) &&
+           opts.clear) {
+               (void) fprintf(stderr,
+                   gettext("invalid options combined with -c\n"));
+               usage(B_FALSE);
+       }
+
        if (opts.clear)
                ret = zpool_do_events_clear(&opts);
        else
@@ -7497,8 +8483,6 @@ main(int argc, char **argv)
        (void) textdomain(TEXT_DOMAIN);
        srand(time(NULL));
 
-       dprintf_setup(&argc, argv);
-
        opterr = 0;
 
        /*
@@ -7541,10 +8525,17 @@ main(int argc, char **argv)
                 * 'freeze' is a vile debugging abomination, so we treat
                 * it as such.
                 */
-               char buf[16384];
-               int fd = open(ZFS_DEV, O_RDWR);
-               (void) strlcpy((void *)buf, argv[2], sizeof (buf));
-               return (!!ioctl(fd, ZFS_IOC_POOL_FREEZE, buf));
+               zfs_cmd_t zc = {"\0"};
+
+               (void) strlcpy(zc.zc_name, argv[2], sizeof (zc.zc_name));
+               ret = zfs_ioctl(g_zfs, ZFS_IOC_POOL_FREEZE, &zc);
+               if (ret != 0) {
+                       (void) fprintf(stderr,
+                       gettext("failed to freeze pool: %d\n"), errno);
+                       ret = 1;
+               }
+
+               log_history = 0;
        } else {
                (void) fprintf(stderr, gettext("unrecognized "
                    "command '%s'\n"), cmdname);