1236884Smm/* 2236884Smm * CDDL HEADER START 3236884Smm * 4236884Smm * The contents of this file are subject to the terms of the 5236884Smm * Common Development and Distribution License (the "License"). 6236884Smm * You may not use this file except in compliance with the License. 7236884Smm * 8236884Smm * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9236884Smm * or http://www.opensolaris.org/os/licensing. 10236884Smm * See the License for the specific language governing permissions 11236884Smm * and limitations under the License. 12236884Smm * 13236884Smm * When distributing Covered Code, include this CDDL HEADER in each 14236884Smm * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15236884Smm * If applicable, add the following below this CDDL HEADER, with the 16236884Smm * fields enclosed by brackets "[]" replaced with your own identifying 17236884Smm * information: Portions Copyright [yyyy] [name of copyright owner] 18236884Smm * 19236884Smm * CDDL HEADER END 20236884Smm */ 21236884Smm 22236884Smm/* 23288572Smav * Copyright (c) 2011, 2015 by Delphix. All rights reserved. 24251646Sdelphij * Copyright (c) 2013 Steven Hartland. All rights reserved. 25236884Smm */ 26236884Smm 27236884Smm/* 28236884Smm * zhack is a debugging tool that can write changes to ZFS pool using libzpool 29236884Smm * for testing purposes. Altering pools with zhack is unsupported and may 30236884Smm * result in corrupted pools. 31236884Smm */ 32236884Smm 33236884Smm#include <stdio.h> 34236884Smm#include <stdlib.h> 35236884Smm#include <ctype.h> 36236884Smm#include <sys/zfs_context.h> 37236884Smm#include <sys/spa.h> 38236884Smm#include <sys/spa_impl.h> 39236884Smm#include <sys/dmu.h> 40236884Smm#include <sys/zap.h> 41236884Smm#include <sys/zfs_znode.h> 42236884Smm#include <sys/dsl_synctask.h> 43236884Smm#include <sys/vdev.h> 44236884Smm#include <sys/fs/zfs.h> 45236884Smm#include <sys/dmu_objset.h> 46236884Smm#include <sys/dsl_pool.h> 47236884Smm#include <sys/zio_checksum.h> 48236884Smm#include <sys/zio_compress.h> 49236884Smm#include <sys/zfeature.h> 50248571Smm#include <sys/dmu_tx.h> 51236884Smm#undef verify 52236884Smm#include <libzfs.h> 53236884Smm 54236884Smmextern boolean_t zfeature_checks_disable; 55236884Smm 56236884Smmconst char cmdname[] = "zhack"; 57236884Smmlibzfs_handle_t *g_zfs; 58236884Smmstatic importargs_t g_importargs; 59236884Smmstatic char *g_pool; 60236884Smmstatic boolean_t g_readonly; 61236884Smm 62236884Smmstatic void 63236884Smmusage(void) 64236884Smm{ 65236884Smm (void) fprintf(stderr, 66236884Smm "Usage: %s [-c cachefile] [-d dir] <subcommand> <args> ...\n" 67236884Smm "where <subcommand> <args> is one of the following:\n" 68236884Smm "\n", cmdname); 69236884Smm 70236884Smm (void) fprintf(stderr, 71236884Smm " feature stat <pool>\n" 72236884Smm " print information about enabled features\n" 73236884Smm " feature enable [-d desc] <pool> <feature>\n" 74236884Smm " add a new enabled feature to the pool\n" 75236884Smm " -d <desc> sets the feature's description\n" 76236884Smm " feature ref [-md] <pool> <feature>\n" 77236884Smm " change the refcount on the given feature\n" 78236884Smm " -d decrease instead of increase the refcount\n" 79236884Smm " -m add the feature to the label if increasing refcount\n" 80236884Smm "\n" 81236884Smm " <feature> : should be a feature guid\n"); 82236884Smm exit(1); 83236884Smm} 84236884Smm 85236884Smm 86236884Smmstatic void 87260617Sdelphijfatal(spa_t *spa, void *tag, const char *fmt, ...) 88236884Smm{ 89236884Smm va_list ap; 90236884Smm 91260617Sdelphij if (spa != NULL) { 92260617Sdelphij spa_close(spa, tag); 93260617Sdelphij (void) spa_export(g_pool, NULL, B_TRUE, B_FALSE); 94260617Sdelphij } 95260617Sdelphij 96236884Smm va_start(ap, fmt); 97236884Smm (void) fprintf(stderr, "%s: ", cmdname); 98236884Smm (void) vfprintf(stderr, fmt, ap); 99236884Smm va_end(ap); 100236884Smm (void) fprintf(stderr, "\n"); 101236884Smm 102236884Smm exit(1); 103236884Smm} 104236884Smm 105236884Smm/* ARGSUSED */ 106236884Smmstatic int 107236884Smmspace_delta_cb(dmu_object_type_t bonustype, void *data, 108236884Smm uint64_t *userp, uint64_t *groupp) 109236884Smm{ 110236884Smm /* 111236884Smm * Is it a valid type of object to track? 112236884Smm */ 113236884Smm if (bonustype != DMU_OT_ZNODE && bonustype != DMU_OT_SA) 114236884Smm return (ENOENT); 115236884Smm (void) fprintf(stderr, "modifying object that needs user accounting"); 116236884Smm abort(); 117236884Smm /* NOTREACHED */ 118236884Smm} 119236884Smm 120236884Smm/* 121236884Smm * Target is the dataset whose pool we want to open. 122236884Smm */ 123236884Smmstatic void 124236884Smmimport_pool(const char *target, boolean_t readonly) 125236884Smm{ 126236884Smm nvlist_t *config; 127236884Smm nvlist_t *pools; 128236884Smm int error; 129236884Smm char *sepp; 130236884Smm spa_t *spa; 131236884Smm nvpair_t *elem; 132236884Smm nvlist_t *props; 133236884Smm const char *name; 134236884Smm 135236884Smm kernel_init(readonly ? FREAD : (FREAD | FWRITE)); 136236884Smm g_zfs = libzfs_init(); 137236884Smm ASSERT(g_zfs != NULL); 138236884Smm 139236884Smm dmu_objset_register_type(DMU_OST_ZFS, space_delta_cb); 140236884Smm 141236884Smm g_readonly = readonly; 142236884Smm 143236884Smm /* 144236884Smm * If we only want readonly access, it's OK if we find 145236884Smm * a potentially-active (ie, imported into the kernel) pool from the 146236884Smm * default cachefile. 147236884Smm */ 148236884Smm if (readonly && spa_open(target, &spa, FTAG) == 0) { 149236884Smm spa_close(spa, FTAG); 150236884Smm return; 151236884Smm } 152236884Smm 153236884Smm g_importargs.unique = B_TRUE; 154236884Smm g_importargs.can_be_active = readonly; 155236884Smm g_pool = strdup(target); 156236884Smm if ((sepp = strpbrk(g_pool, "/@")) != NULL) 157236884Smm *sepp = '\0'; 158236884Smm g_importargs.poolname = g_pool; 159236884Smm pools = zpool_search_import(g_zfs, &g_importargs); 160236884Smm 161251646Sdelphij if (nvlist_empty(pools)) { 162236884Smm if (!g_importargs.can_be_active) { 163236884Smm g_importargs.can_be_active = B_TRUE; 164236884Smm if (zpool_search_import(g_zfs, &g_importargs) != NULL || 165236884Smm spa_open(target, &spa, FTAG) == 0) { 166260617Sdelphij fatal(spa, FTAG, "cannot import '%s': pool is " 167260617Sdelphij "active; run " "\"zpool export %s\" " 168260617Sdelphij "first\n", g_pool, g_pool); 169236884Smm } 170236884Smm } 171236884Smm 172260617Sdelphij fatal(NULL, FTAG, "cannot import '%s': no such pool " 173260617Sdelphij "available\n", g_pool); 174236884Smm } 175236884Smm 176236884Smm elem = nvlist_next_nvpair(pools, NULL); 177236884Smm name = nvpair_name(elem); 178236884Smm verify(nvpair_value_nvlist(elem, &config) == 0); 179236884Smm 180236884Smm props = NULL; 181236884Smm if (readonly) { 182236884Smm verify(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0); 183236884Smm verify(nvlist_add_uint64(props, 184236884Smm zpool_prop_to_name(ZPOOL_PROP_READONLY), 1) == 0); 185236884Smm } 186236884Smm 187236884Smm zfeature_checks_disable = B_TRUE; 188236884Smm error = spa_import(name, config, props, ZFS_IMPORT_NORMAL); 189236884Smm zfeature_checks_disable = B_FALSE; 190236884Smm if (error == EEXIST) 191236884Smm error = 0; 192236884Smm 193236884Smm if (error) 194260617Sdelphij fatal(NULL, FTAG, "can't import '%s': %s", name, 195260617Sdelphij strerror(error)); 196236884Smm} 197236884Smm 198236884Smmstatic void 199236884Smmzhack_spa_open(const char *target, boolean_t readonly, void *tag, spa_t **spa) 200236884Smm{ 201236884Smm int err; 202236884Smm 203236884Smm import_pool(target, readonly); 204236884Smm 205236884Smm zfeature_checks_disable = B_TRUE; 206236884Smm err = spa_open(target, spa, tag); 207236884Smm zfeature_checks_disable = B_FALSE; 208236884Smm 209236884Smm if (err != 0) 210260617Sdelphij fatal(*spa, FTAG, "cannot open '%s': %s", target, 211260617Sdelphij strerror(err)); 212236884Smm if (spa_version(*spa) < SPA_VERSION_FEATURES) { 213260617Sdelphij fatal(*spa, FTAG, "'%s' has version %d, features not enabled", 214260617Sdelphij target, (int)spa_version(*spa)); 215236884Smm } 216236884Smm} 217236884Smm 218236884Smmstatic void 219236884Smmdump_obj(objset_t *os, uint64_t obj, const char *name) 220236884Smm{ 221236884Smm zap_cursor_t zc; 222236884Smm zap_attribute_t za; 223236884Smm 224236884Smm (void) printf("%s_obj:\n", name); 225236884Smm 226236884Smm for (zap_cursor_init(&zc, os, obj); 227236884Smm zap_cursor_retrieve(&zc, &za) == 0; 228236884Smm zap_cursor_advance(&zc)) { 229236884Smm if (za.za_integer_length == 8) { 230236884Smm ASSERT(za.za_num_integers == 1); 231236884Smm (void) printf("\t%s = %llu\n", 232236884Smm za.za_name, (u_longlong_t)za.za_first_integer); 233236884Smm } else { 234236884Smm ASSERT(za.za_integer_length == 1); 235236884Smm char val[1024]; 236236884Smm VERIFY(zap_lookup(os, obj, za.za_name, 237236884Smm 1, sizeof (val), val) == 0); 238236884Smm (void) printf("\t%s = %s\n", za.za_name, val); 239236884Smm } 240236884Smm } 241236884Smm zap_cursor_fini(&zc); 242236884Smm} 243236884Smm 244236884Smmstatic void 245236884Smmdump_mos(spa_t *spa) 246236884Smm{ 247236884Smm nvlist_t *nv = spa->spa_label_features; 248236884Smm 249236884Smm (void) printf("label config:\n"); 250236884Smm for (nvpair_t *pair = nvlist_next_nvpair(nv, NULL); 251236884Smm pair != NULL; 252236884Smm pair = nvlist_next_nvpair(nv, pair)) { 253236884Smm (void) printf("\t%s\n", nvpair_name(pair)); 254236884Smm } 255236884Smm} 256236884Smm 257236884Smmstatic void 258236884Smmzhack_do_feature_stat(int argc, char **argv) 259236884Smm{ 260236884Smm spa_t *spa; 261236884Smm objset_t *os; 262236884Smm char *target; 263236884Smm 264236884Smm argc--; 265236884Smm argv++; 266236884Smm 267236884Smm if (argc < 1) { 268236884Smm (void) fprintf(stderr, "error: missing pool name\n"); 269236884Smm usage(); 270236884Smm } 271236884Smm target = argv[0]; 272236884Smm 273236884Smm zhack_spa_open(target, B_TRUE, FTAG, &spa); 274236884Smm os = spa->spa_meta_objset; 275236884Smm 276236884Smm dump_obj(os, spa->spa_feat_for_read_obj, "for_read"); 277236884Smm dump_obj(os, spa->spa_feat_for_write_obj, "for_write"); 278236884Smm dump_obj(os, spa->spa_feat_desc_obj, "descriptions"); 279263397Sdelphij if (spa_feature_is_active(spa, SPA_FEATURE_ENABLED_TXG)) { 280263397Sdelphij dump_obj(os, spa->spa_feat_enabled_txg_obj, "enabled_txg"); 281263397Sdelphij } 282236884Smm dump_mos(spa); 283236884Smm 284236884Smm spa_close(spa, FTAG); 285236884Smm} 286236884Smm 287236884Smmstatic void 288263390Sdelphijzhack_feature_enable_sync(void *arg, dmu_tx_t *tx) 289236884Smm{ 290248571Smm spa_t *spa = dmu_tx_pool(tx)->dp_spa; 291248571Smm zfeature_info_t *feature = arg; 292236884Smm 293263390Sdelphij feature_enable_sync(spa, feature, tx); 294263390Sdelphij 295248571Smm spa_history_log_internal(spa, "zhack enable feature", tx, 296288572Smav "guid=%s flags=%x", 297288572Smav feature->fi_guid, feature->fi_flags); 298236884Smm} 299236884Smm 300236884Smmstatic void 301236884Smmzhack_do_feature_enable(int argc, char **argv) 302236884Smm{ 303236884Smm char c; 304236884Smm char *desc, *target; 305236884Smm spa_t *spa; 306236884Smm objset_t *mos; 307236884Smm zfeature_info_t feature; 308263390Sdelphij spa_feature_t nodeps[] = { SPA_FEATURE_NONE }; 309236884Smm 310236884Smm /* 311236884Smm * Features are not added to the pool's label until their refcounts 312236884Smm * are incremented, so fi_mos can just be left as false for now. 313236884Smm */ 314236884Smm desc = NULL; 315236884Smm feature.fi_uname = "zhack"; 316288572Smav feature.fi_flags = 0; 317236884Smm feature.fi_depends = nodeps; 318263397Sdelphij feature.fi_feature = SPA_FEATURE_NONE; 319236884Smm 320236884Smm optind = 1; 321236884Smm while ((c = getopt(argc, argv, "rmd:")) != -1) { 322236884Smm switch (c) { 323236884Smm case 'r': 324288572Smav feature.fi_flags |= ZFEATURE_FLAG_READONLY_COMPAT; 325236884Smm break; 326236884Smm case 'd': 327236884Smm desc = strdup(optarg); 328236884Smm break; 329236884Smm default: 330236884Smm usage(); 331236884Smm break; 332236884Smm } 333236884Smm } 334236884Smm 335236884Smm if (desc == NULL) 336236884Smm desc = strdup("zhack injected"); 337236884Smm feature.fi_desc = desc; 338236884Smm 339236884Smm argc -= optind; 340236884Smm argv += optind; 341236884Smm 342236884Smm if (argc < 2) { 343236884Smm (void) fprintf(stderr, "error: missing feature or pool name\n"); 344236884Smm usage(); 345236884Smm } 346236884Smm target = argv[0]; 347236884Smm feature.fi_guid = argv[1]; 348236884Smm 349236884Smm if (!zfeature_is_valid_guid(feature.fi_guid)) 350260617Sdelphij fatal(NULL, FTAG, "invalid feature guid: %s", feature.fi_guid); 351236884Smm 352236884Smm zhack_spa_open(target, B_FALSE, FTAG, &spa); 353236884Smm mos = spa->spa_meta_objset; 354236884Smm 355263390Sdelphij if (zfeature_is_supported(feature.fi_guid)) 356260617Sdelphij fatal(spa, FTAG, "'%s' is a real feature, will not enable"); 357236884Smm if (0 == zap_contains(mos, spa->spa_feat_desc_obj, feature.fi_guid)) 358260617Sdelphij fatal(spa, FTAG, "feature already enabled: %s", 359260617Sdelphij feature.fi_guid); 360236884Smm 361248571Smm VERIFY0(dsl_sync_task(spa_name(spa), NULL, 362269006Sdelphij zhack_feature_enable_sync, &feature, 5, ZFS_SPACE_CHECK_NORMAL)); 363236884Smm 364236884Smm spa_close(spa, FTAG); 365236884Smm 366236884Smm free(desc); 367236884Smm} 368236884Smm 369236884Smmstatic void 370248571Smmfeature_incr_sync(void *arg, dmu_tx_t *tx) 371236884Smm{ 372248571Smm spa_t *spa = dmu_tx_pool(tx)->dp_spa; 373248571Smm zfeature_info_t *feature = arg; 374263390Sdelphij uint64_t refcount; 375236884Smm 376263397Sdelphij VERIFY0(feature_get_refcount_from_disk(spa, feature, &refcount)); 377263390Sdelphij feature_sync(spa, feature, refcount + 1, tx); 378248571Smm spa_history_log_internal(spa, "zhack feature incr", tx, 379248571Smm "name=%s", feature->fi_guid); 380236884Smm} 381236884Smm 382236884Smmstatic void 383248571Smmfeature_decr_sync(void *arg, dmu_tx_t *tx) 384236884Smm{ 385248571Smm spa_t *spa = dmu_tx_pool(tx)->dp_spa; 386248571Smm zfeature_info_t *feature = arg; 387263390Sdelphij uint64_t refcount; 388236884Smm 389263397Sdelphij VERIFY0(feature_get_refcount_from_disk(spa, feature, &refcount)); 390263390Sdelphij feature_sync(spa, feature, refcount - 1, tx); 391248571Smm spa_history_log_internal(spa, "zhack feature decr", tx, 392248571Smm "name=%s", feature->fi_guid); 393236884Smm} 394236884Smm 395236884Smmstatic void 396236884Smmzhack_do_feature_ref(int argc, char **argv) 397236884Smm{ 398236884Smm char c; 399236884Smm char *target; 400236884Smm boolean_t decr = B_FALSE; 401236884Smm spa_t *spa; 402236884Smm objset_t *mos; 403236884Smm zfeature_info_t feature; 404263390Sdelphij spa_feature_t nodeps[] = { SPA_FEATURE_NONE }; 405236884Smm 406236884Smm /* 407236884Smm * fi_desc does not matter here because it was written to disk 408236884Smm * when the feature was enabled, but we need to properly set the 409236884Smm * feature for read or write based on the information we read off 410236884Smm * disk later. 411236884Smm */ 412236884Smm feature.fi_uname = "zhack"; 413288572Smav feature.fi_flags = 0; 414236884Smm feature.fi_desc = NULL; 415236884Smm feature.fi_depends = nodeps; 416263397Sdelphij feature.fi_feature = SPA_FEATURE_NONE; 417236884Smm 418236884Smm optind = 1; 419236884Smm while ((c = getopt(argc, argv, "md")) != -1) { 420236884Smm switch (c) { 421236884Smm case 'm': 422288572Smav feature.fi_flags |= ZFEATURE_FLAG_MOS; 423236884Smm break; 424236884Smm case 'd': 425236884Smm decr = B_TRUE; 426236884Smm break; 427236884Smm default: 428236884Smm usage(); 429236884Smm break; 430236884Smm } 431236884Smm } 432236884Smm argc -= optind; 433236884Smm argv += optind; 434236884Smm 435236884Smm if (argc < 2) { 436236884Smm (void) fprintf(stderr, "error: missing feature or pool name\n"); 437236884Smm usage(); 438236884Smm } 439236884Smm target = argv[0]; 440236884Smm feature.fi_guid = argv[1]; 441236884Smm 442236884Smm if (!zfeature_is_valid_guid(feature.fi_guid)) 443260617Sdelphij fatal(NULL, FTAG, "invalid feature guid: %s", feature.fi_guid); 444236884Smm 445236884Smm zhack_spa_open(target, B_FALSE, FTAG, &spa); 446236884Smm mos = spa->spa_meta_objset; 447236884Smm 448263390Sdelphij if (zfeature_is_supported(feature.fi_guid)) { 449263390Sdelphij fatal(spa, FTAG, 450263390Sdelphij "'%s' is a real feature, will not change refcount"); 451263390Sdelphij } 452236884Smm 453236884Smm if (0 == zap_contains(mos, spa->spa_feat_for_read_obj, 454236884Smm feature.fi_guid)) { 455288572Smav feature.fi_flags &= ~ZFEATURE_FLAG_READONLY_COMPAT; 456236884Smm } else if (0 == zap_contains(mos, spa->spa_feat_for_write_obj, 457236884Smm feature.fi_guid)) { 458288572Smav feature.fi_flags |= ZFEATURE_FLAG_READONLY_COMPAT; 459236884Smm } else { 460260617Sdelphij fatal(spa, FTAG, "feature is not enabled: %s", feature.fi_guid); 461236884Smm } 462236884Smm 463263390Sdelphij if (decr) { 464263390Sdelphij uint64_t count; 465263397Sdelphij if (feature_get_refcount_from_disk(spa, &feature, 466263397Sdelphij &count) == 0 && count != 0) { 467263390Sdelphij fatal(spa, FTAG, "feature refcount already 0: %s", 468263390Sdelphij feature.fi_guid); 469263390Sdelphij } 470263390Sdelphij } 471236884Smm 472248571Smm VERIFY0(dsl_sync_task(spa_name(spa), NULL, 473269006Sdelphij decr ? feature_decr_sync : feature_incr_sync, &feature, 474269006Sdelphij 5, ZFS_SPACE_CHECK_NORMAL)); 475236884Smm 476236884Smm spa_close(spa, FTAG); 477236884Smm} 478236884Smm 479236884Smmstatic int 480236884Smmzhack_do_feature(int argc, char **argv) 481236884Smm{ 482236884Smm char *subcommand; 483236884Smm 484236884Smm argc--; 485236884Smm argv++; 486236884Smm if (argc == 0) { 487236884Smm (void) fprintf(stderr, 488236884Smm "error: no feature operation specified\n"); 489236884Smm usage(); 490236884Smm } 491236884Smm 492236884Smm subcommand = argv[0]; 493236884Smm if (strcmp(subcommand, "stat") == 0) { 494236884Smm zhack_do_feature_stat(argc, argv); 495236884Smm } else if (strcmp(subcommand, "enable") == 0) { 496236884Smm zhack_do_feature_enable(argc, argv); 497236884Smm } else if (strcmp(subcommand, "ref") == 0) { 498236884Smm zhack_do_feature_ref(argc, argv); 499236884Smm } else { 500236884Smm (void) fprintf(stderr, "error: unknown subcommand: %s\n", 501236884Smm subcommand); 502236884Smm usage(); 503236884Smm } 504236884Smm 505236884Smm return (0); 506236884Smm} 507236884Smm 508236884Smm#define MAX_NUM_PATHS 1024 509236884Smm 510236884Smmint 511236884Smmmain(int argc, char **argv) 512236884Smm{ 513236884Smm extern void zfs_prop_init(void); 514236884Smm 515236884Smm char *path[MAX_NUM_PATHS]; 516236884Smm const char *subcommand; 517236884Smm int rv = 0; 518236884Smm char c; 519236884Smm 520236884Smm g_importargs.path = path; 521236884Smm 522236884Smm dprintf_setup(&argc, argv); 523236884Smm zfs_prop_init(); 524236884Smm 525236884Smm while ((c = getopt(argc, argv, "c:d:")) != -1) { 526236884Smm switch (c) { 527236884Smm case 'c': 528236884Smm g_importargs.cachefile = optarg; 529236884Smm break; 530236884Smm case 'd': 531236884Smm assert(g_importargs.paths < MAX_NUM_PATHS); 532236884Smm g_importargs.path[g_importargs.paths++] = optarg; 533236884Smm break; 534236884Smm default: 535236884Smm usage(); 536236884Smm break; 537236884Smm } 538236884Smm } 539236884Smm 540236884Smm argc -= optind; 541236884Smm argv += optind; 542236884Smm optind = 1; 543236884Smm 544236884Smm if (argc == 0) { 545236884Smm (void) fprintf(stderr, "error: no command specified\n"); 546236884Smm usage(); 547236884Smm } 548236884Smm 549236884Smm subcommand = argv[0]; 550236884Smm 551236884Smm if (strcmp(subcommand, "feature") == 0) { 552236884Smm rv = zhack_do_feature(argc, argv); 553236884Smm } else { 554236884Smm (void) fprintf(stderr, "error: unknown subcommand: %s\n", 555236884Smm subcommand); 556236884Smm usage(); 557236884Smm } 558236884Smm 559260617Sdelphij if (!g_readonly && spa_export(g_pool, NULL, B_TRUE, B_FALSE) != 0) { 560260617Sdelphij fatal(NULL, FTAG, "pool export failed; " 561236884Smm "changes may not be committed to disk\n"); 562236884Smm } 563236884Smm 564236884Smm libzfs_fini(g_zfs); 565236884Smm kernel_fini(); 566236884Smm 567236884Smm return (rv); 568236884Smm} 569