4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or https://opensource.org/licenses/CDDL-1.0.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
23 * Copyright (c) 2011, 2015 by Delphix. All rights reserved.
24 * Copyright (c) 2013 Steven Hartland. All rights reserved.
28 * zhack is a debugging tool that can write changes to ZFS pool using libzpool
29 * for testing purposes. Altering pools with zhack is unsupported and may
30 * result in corrupted pools.
38 #include <sys/zfs_context.h>
40 #include <sys/spa_impl.h>
43 #include <sys/zfs_znode.h>
44 #include <sys/dsl_synctask.h>
46 #include <sys/vdev_impl.h>
47 #include <sys/fs/zfs.h>
48 #include <sys/dmu_objset.h>
49 #include <sys/dsl_pool.h>
50 #include <sys/zio_checksum.h>
51 #include <sys/zio_compress.h>
52 #include <sys/zfeature.h>
53 #include <sys/dmu_tx.h>
54 #include <zfeature_common.h>
57 static importargs_t g_importargs;
59 static boolean_t g_readonly;
62 ZHACK_REPAIR_OP_UNKNOWN = 0,
63 ZHACK_REPAIR_OP_CKSUM = (1 << 0),
64 ZHACK_REPAIR_OP_UNDETACH = (1 << 1)
67 static __attribute__((noreturn)) void
70 (void) fprintf(stderr,
71 "Usage: zhack [-c cachefile] [-d dir] <subcommand> <args> ...\n"
72 "where <subcommand> <args> is one of the following:\n"
75 (void) fprintf(stderr,
76 " feature stat <pool>\n"
77 " print information about enabled features\n"
78 " feature enable [-r] [-d desc] <pool> <feature>\n"
79 " add a new enabled feature to the pool\n"
80 " -d <desc> sets the feature's description\n"
81 " -r set read-only compatible flag for feature\n"
82 " feature ref [-md] <pool> <feature>\n"
83 " change the refcount on the given feature\n"
84 " -d decrease instead of increase the refcount\n"
85 " -m add the feature to the label if increasing refcount\n"
87 " <feature> : should be a feature guid\n"
89 " label repair <device>\n"
90 " repair labels of a specified device according to options\n"
91 " which may be combined to do their functions in one call\n"
92 " -c repair corrupted label checksums\n"
93 " -u restore the label on a detached device\n"
95 " <device> : path to vdev\n");
100 static __attribute__((format(printf, 3, 4))) __attribute__((noreturn)) void
101 fatal(spa_t *spa, const void *tag, const char *fmt, ...)
107 (void) spa_export(g_pool, NULL, B_TRUE, B_FALSE);
111 (void) fputs("zhack: ", stderr);
112 (void) vfprintf(stderr, fmt, ap);
114 (void) fputc('\n', stderr);
120 space_delta_cb(dmu_object_type_t bonustype, const void *data,
121 zfs_file_info_t *zoi)
123 (void) data, (void) zoi;
126 * Is it a valid type of object to track?
128 if (bonustype != DMU_OT_ZNODE && bonustype != DMU_OT_SA)
130 (void) fprintf(stderr, "modifying object that needs user accounting");
135 * Target is the dataset whose pool we want to open.
138 zhack_import(char *target, boolean_t readonly)
144 kernel_init(readonly ? SPA_MODE_READ :
145 (SPA_MODE_READ | SPA_MODE_WRITE));
147 dmu_objset_register_type(DMU_OST_ZFS, space_delta_cb);
149 g_readonly = readonly;
150 g_importargs.can_be_active = readonly;
151 g_pool = strdup(target);
153 libpc_handle_t lpch = {
154 .lpc_lib_handle = NULL,
155 .lpc_ops = &libzpool_config_ops,
156 .lpc_printerr = B_TRUE
158 error = zpool_find_config(&lpch, target, &config, &g_importargs);
160 fatal(NULL, FTAG, "cannot import '%s'", target);
164 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0);
165 VERIFY(nvlist_add_uint64(props,
166 zpool_prop_to_name(ZPOOL_PROP_READONLY), 1) == 0);
169 zfeature_checks_disable = B_TRUE;
170 error = spa_import(target, config, props,
171 (readonly ? ZFS_IMPORT_SKIP_MMP : ZFS_IMPORT_NORMAL));
172 fnvlist_free(config);
173 zfeature_checks_disable = B_FALSE;
178 fatal(NULL, FTAG, "can't import '%s': %s", target,
183 zhack_spa_open(char *target, boolean_t readonly, const void *tag, spa_t **spa)
187 zhack_import(target, readonly);
189 zfeature_checks_disable = B_TRUE;
190 err = spa_open(target, spa, tag);
191 zfeature_checks_disable = B_FALSE;
194 fatal(*spa, FTAG, "cannot open '%s': %s", target,
196 if (spa_version(*spa) < SPA_VERSION_FEATURES) {
197 fatal(*spa, FTAG, "'%s' has version %d, features not enabled",
198 target, (int)spa_version(*spa));
203 dump_obj(objset_t *os, uint64_t obj, const char *name)
208 (void) printf("%s_obj:\n", name);
210 for (zap_cursor_init(&zc, os, obj);
211 zap_cursor_retrieve(&zc, &za) == 0;
212 zap_cursor_advance(&zc)) {
213 if (za.za_integer_length == 8) {
214 ASSERT(za.za_num_integers == 1);
215 (void) printf("\t%s = %llu\n",
216 za.za_name, (u_longlong_t)za.za_first_integer);
218 ASSERT(za.za_integer_length == 1);
220 VERIFY(zap_lookup(os, obj, za.za_name,
221 1, sizeof (val), val) == 0);
222 (void) printf("\t%s = %s\n", za.za_name, val);
225 zap_cursor_fini(&zc);
231 nvlist_t *nv = spa->spa_label_features;
234 (void) printf("label config:\n");
235 for (pair = nvlist_next_nvpair(nv, NULL);
237 pair = nvlist_next_nvpair(nv, pair)) {
238 (void) printf("\t%s\n", nvpair_name(pair));
243 zhack_do_feature_stat(int argc, char **argv)
253 (void) fprintf(stderr, "error: missing pool name\n");
258 zhack_spa_open(target, B_TRUE, FTAG, &spa);
259 os = spa->spa_meta_objset;
261 dump_obj(os, spa->spa_feat_for_read_obj, "for_read");
262 dump_obj(os, spa->spa_feat_for_write_obj, "for_write");
263 dump_obj(os, spa->spa_feat_desc_obj, "descriptions");
264 if (spa_feature_is_active(spa, SPA_FEATURE_ENABLED_TXG)) {
265 dump_obj(os, spa->spa_feat_enabled_txg_obj, "enabled_txg");
269 spa_close(spa, FTAG);
273 zhack_feature_enable_sync(void *arg, dmu_tx_t *tx)
275 spa_t *spa = dmu_tx_pool(tx)->dp_spa;
276 zfeature_info_t *feature = arg;
278 feature_enable_sync(spa, feature, tx);
280 spa_history_log_internal(spa, "zhack enable feature", tx,
282 feature->fi_guid, feature->fi_flags);
286 zhack_do_feature_enable(int argc, char **argv)
292 zfeature_info_t feature;
293 const spa_feature_t nodeps[] = { SPA_FEATURE_NONE };
296 * Features are not added to the pool's label until their refcounts
297 * are incremented, so fi_mos can just be left as false for now.
300 feature.fi_uname = "zhack";
301 feature.fi_flags = 0;
302 feature.fi_depends = nodeps;
303 feature.fi_feature = SPA_FEATURE_NONE;
306 while ((c = getopt(argc, argv, "+rd:")) != -1) {
309 feature.fi_flags |= ZFEATURE_FLAG_READONLY_COMPAT;
314 desc = strdup(optarg);
323 desc = strdup("zhack injected");
324 feature.fi_desc = desc;
330 (void) fprintf(stderr, "error: missing feature or pool name\n");
334 feature.fi_guid = argv[1];
336 if (!zfeature_is_valid_guid(feature.fi_guid))
337 fatal(NULL, FTAG, "invalid feature guid: %s", feature.fi_guid);
339 zhack_spa_open(target, B_FALSE, FTAG, &spa);
340 mos = spa->spa_meta_objset;
342 if (zfeature_is_supported(feature.fi_guid))
343 fatal(spa, FTAG, "'%s' is a real feature, will not enable",
345 if (0 == zap_contains(mos, spa->spa_feat_desc_obj, feature.fi_guid))
346 fatal(spa, FTAG, "feature already enabled: %s",
349 VERIFY0(dsl_sync_task(spa_name(spa), NULL,
350 zhack_feature_enable_sync, &feature, 5, ZFS_SPACE_CHECK_NORMAL));
352 spa_close(spa, FTAG);
358 feature_incr_sync(void *arg, dmu_tx_t *tx)
360 spa_t *spa = dmu_tx_pool(tx)->dp_spa;
361 zfeature_info_t *feature = arg;
364 VERIFY0(feature_get_refcount_from_disk(spa, feature, &refcount));
365 feature_sync(spa, feature, refcount + 1, tx);
366 spa_history_log_internal(spa, "zhack feature incr", tx,
367 "name=%s", feature->fi_guid);
371 feature_decr_sync(void *arg, dmu_tx_t *tx)
373 spa_t *spa = dmu_tx_pool(tx)->dp_spa;
374 zfeature_info_t *feature = arg;
377 VERIFY0(feature_get_refcount_from_disk(spa, feature, &refcount));
378 feature_sync(spa, feature, refcount - 1, tx);
379 spa_history_log_internal(spa, "zhack feature decr", tx,
380 "name=%s", feature->fi_guid);
384 zhack_do_feature_ref(int argc, char **argv)
388 boolean_t decr = B_FALSE;
391 zfeature_info_t feature;
392 const spa_feature_t nodeps[] = { SPA_FEATURE_NONE };
395 * fi_desc does not matter here because it was written to disk
396 * when the feature was enabled, but we need to properly set the
397 * feature for read or write based on the information we read off
400 feature.fi_uname = "zhack";
401 feature.fi_flags = 0;
402 feature.fi_desc = NULL;
403 feature.fi_depends = nodeps;
404 feature.fi_feature = SPA_FEATURE_NONE;
407 while ((c = getopt(argc, argv, "+md")) != -1) {
410 feature.fi_flags |= ZFEATURE_FLAG_MOS;
424 (void) fprintf(stderr, "error: missing feature or pool name\n");
428 feature.fi_guid = argv[1];
430 if (!zfeature_is_valid_guid(feature.fi_guid))
431 fatal(NULL, FTAG, "invalid feature guid: %s", feature.fi_guid);
433 zhack_spa_open(target, B_FALSE, FTAG, &spa);
434 mos = spa->spa_meta_objset;
436 if (zfeature_is_supported(feature.fi_guid)) {
438 "'%s' is a real feature, will not change refcount",
442 if (0 == zap_contains(mos, spa->spa_feat_for_read_obj,
444 feature.fi_flags &= ~ZFEATURE_FLAG_READONLY_COMPAT;
445 } else if (0 == zap_contains(mos, spa->spa_feat_for_write_obj,
447 feature.fi_flags |= ZFEATURE_FLAG_READONLY_COMPAT;
449 fatal(spa, FTAG, "feature is not enabled: %s", feature.fi_guid);
454 if (feature_get_refcount_from_disk(spa, &feature,
455 &count) == 0 && count == 0) {
456 fatal(spa, FTAG, "feature refcount already 0: %s",
461 VERIFY0(dsl_sync_task(spa_name(spa), NULL,
462 decr ? feature_decr_sync : feature_incr_sync, &feature,
463 5, ZFS_SPACE_CHECK_NORMAL));
465 spa_close(spa, FTAG);
469 zhack_do_feature(int argc, char **argv)
476 (void) fprintf(stderr,
477 "error: no feature operation specified\n");
481 subcommand = argv[0];
482 if (strcmp(subcommand, "stat") == 0) {
483 zhack_do_feature_stat(argc, argv);
484 } else if (strcmp(subcommand, "enable") == 0) {
485 zhack_do_feature_enable(argc, argv);
486 } else if (strcmp(subcommand, "ref") == 0) {
487 zhack_do_feature_ref(argc, argv);
489 (void) fprintf(stderr, "error: unknown subcommand: %s\n",
497 #define ASHIFT_UBERBLOCK_SHIFT(ashift) \
498 MIN(MAX(ashift, UBERBLOCK_SHIFT), \
500 #define ASHIFT_UBERBLOCK_SIZE(ashift) \
501 (1ULL << ASHIFT_UBERBLOCK_SHIFT(ashift))
503 #define REPAIR_LABEL_STATUS_CKSUM (1 << 0)
504 #define REPAIR_LABEL_STATUS_UB (1 << 1)
507 zhack_repair_read_label(const int fd, vdev_label_t *vl,
508 const uint64_t label_offset, const int l)
510 const int err = pread64(fd, vl, sizeof (vdev_label_t), label_offset);
513 (void) fprintf(stderr,
514 "error: cannot read label %d: %s\n",
517 } else if (err != sizeof (vdev_label_t)) {
518 (void) fprintf(stderr,
519 "error: bad label %d read size\n", l);
527 zhack_repair_calc_cksum(const int byteswap, void *data, const uint64_t offset,
528 const uint64_t abdsize, zio_eck_t *eck, zio_cksum_t *cksum)
530 zio_cksum_t verifier;
531 zio_cksum_t current_cksum;
532 zio_checksum_info_t *ci;
535 ZIO_SET_CHECKSUM(&verifier, offset, 0, 0, 0);
538 byteswap_uint64_array(&verifier, sizeof (zio_cksum_t));
540 current_cksum = eck->zec_cksum;
541 eck->zec_cksum = verifier;
543 ci = &zio_checksum_table[ZIO_CHECKSUM_LABEL];
544 abd = abd_get_from_buf(data, abdsize);
545 ci->ci_func[byteswap](abd, abdsize, NULL, cksum);
548 eck->zec_cksum = current_cksum;
552 zhack_repair_check_label(uberblock_t *ub, const int l, const char **cfg_keys,
553 const size_t cfg_keys_len, nvlist_t *cfg, nvlist_t *vdev_tree_cfg,
558 if (ub->ub_txg != 0) {
559 (void) fprintf(stderr,
560 "error: label %d: UB TXG of 0 expected, but got %"
563 (void) fprintf(stderr, "It would appear the device was not "
564 "properly removed.\n");
568 for (int i = 0; i < cfg_keys_len; i++) {
570 err = nvlist_lookup_uint64(cfg, cfg_keys[i], &val);
572 (void) fprintf(stderr,
573 "error: label %d, %d: "
574 "cannot find nvlist key %s\n",
580 err = nvlist_lookup_nvlist(cfg,
581 ZPOOL_CONFIG_VDEV_TREE, &vdev_tree_cfg);
583 (void) fprintf(stderr,
584 "error: label %d: cannot find nvlist key %s\n",
585 l, ZPOOL_CONFIG_VDEV_TREE);
589 err = nvlist_lookup_uint64(vdev_tree_cfg,
590 ZPOOL_CONFIG_ASHIFT, ashift);
592 (void) fprintf(stderr,
593 "error: label %d: cannot find nvlist key %s\n",
594 l, ZPOOL_CONFIG_ASHIFT);
599 (void) fprintf(stderr,
600 "error: label %d: nvlist key %s is zero\n",
601 l, ZPOOL_CONFIG_ASHIFT);
609 zhack_repair_undetach(uberblock_t *ub, nvlist_t *cfg, const int l)
612 * Uberblock root block pointer has valid birth TXG.
613 * Copying it to the label NVlist
615 if (ub->ub_rootbp.blk_birth != 0) {
616 const uint64_t txg = ub->ub_rootbp.blk_birth;
619 if (nvlist_remove_all(cfg, ZPOOL_CONFIG_CREATE_TXG) != 0) {
620 (void) fprintf(stderr,
622 "Failed to remove pool creation TXG\n",
627 if (nvlist_remove_all(cfg, ZPOOL_CONFIG_POOL_TXG) != 0) {
628 (void) fprintf(stderr,
629 "error: label %d: Failed to remove pool TXG to "
635 if (nvlist_add_uint64(cfg, ZPOOL_CONFIG_POOL_TXG, txg) != 0) {
636 (void) fprintf(stderr,
638 "Failed to add pool TXG of %" PRIu64 "\n",
648 zhack_repair_write_label(const int l, const int fd, const int byteswap,
649 void *data, zio_eck_t *eck, const uint64_t offset, const uint64_t abdsize)
651 zio_cksum_t actual_cksum;
652 zhack_repair_calc_cksum(byteswap, data, offset, abdsize, eck,
654 zio_cksum_t expected_cksum = eck->zec_cksum;
657 if (ZIO_CHECKSUM_EQUAL(actual_cksum, expected_cksum))
660 eck->zec_cksum = actual_cksum;
662 err = pwrite64(fd, data, abdsize, offset);
664 (void) fprintf(stderr, "error: cannot write label %d: %s\n",
667 } else if (err != abdsize) {
668 (void) fprintf(stderr, "error: bad write size label %d\n", l);
671 (void) fprintf(stderr,
672 "label %d: wrote %" PRIu64 " bytes at offset %" PRIu64 "\n",
680 zhack_repair_write_uberblock(vdev_label_t *vl, const int l,
681 const uint64_t ashift, const int fd, const int byteswap,
682 const uint64_t label_offset, uint32_t *labels_repaired)
685 (char *)vl + offsetof(vdev_label_t, vl_uberblock);
688 ((char *)(ub_data) + (ASHIFT_UBERBLOCK_SIZE(ashift))) - 1;
690 if (ub_eck->zec_magic != 0) {
691 (void) fprintf(stderr,
693 "Expected Uberblock checksum magic number to "
694 "be 0, but got %" PRIu64 "\n",
695 l, ub_eck->zec_magic);
696 (void) fprintf(stderr, "It would appear there's already "
697 "a checksum for the uberblock.\n");
702 ub_eck->zec_magic = byteswap ? BSWAP_64(ZEC_MAGIC) : ZEC_MAGIC;
704 if (zhack_repair_write_label(l, fd, byteswap,
706 label_offset + offsetof(vdev_label_t, vl_uberblock),
707 ASHIFT_UBERBLOCK_SIZE(ashift)))
708 labels_repaired[l] |= REPAIR_LABEL_STATUS_UB;
712 zhack_repair_print_cksum(FILE *stream, const zio_cksum_t *cksum)
714 (void) fprintf(stream,
715 "%016llx:%016llx:%016llx:%016llx",
716 (u_longlong_t)cksum->zc_word[0],
717 (u_longlong_t)cksum->zc_word[1],
718 (u_longlong_t)cksum->zc_word[2],
719 (u_longlong_t)cksum->zc_word[3]);
723 zhack_repair_test_cksum(const int byteswap, void *vdev_data,
724 zio_eck_t *vdev_eck, const uint64_t vdev_phys_offset, const int l)
726 const zio_cksum_t expected_cksum = vdev_eck->zec_cksum;
727 zio_cksum_t actual_cksum;
728 zhack_repair_calc_cksum(byteswap, vdev_data, vdev_phys_offset,
729 VDEV_PHYS_SIZE, vdev_eck, &actual_cksum);
730 const uint64_t expected_magic = byteswap ?
731 BSWAP_64(ZEC_MAGIC) : ZEC_MAGIC;
732 const uint64_t actual_magic = vdev_eck->zec_magic;
734 if (actual_magic != expected_magic) {
735 (void) fprintf(stderr, "error: label %d: "
737 "the nvlist checksum magic number to not be %"
738 PRIu64 " not %" PRIu64 "\n",
739 l, expected_magic, actual_magic);
742 if (!ZIO_CHECKSUM_EQUAL(actual_cksum, expected_cksum)) {
743 (void) fprintf(stderr, "error: label %d: "
744 "Expected the nvlist checksum to be ", l);
745 (void) zhack_repair_print_cksum(stderr,
747 (void) fprintf(stderr, " not ");
748 zhack_repair_print_cksum(stderr, &actual_cksum);
749 (void) fprintf(stderr, "\n");
756 zhack_repair_one_label(const zhack_repair_op_t op, const int fd,
757 vdev_label_t *vl, const uint64_t label_offset, const int l,
758 uint32_t *labels_repaired)
761 uberblock_t *ub = (uberblock_t *)vl->vl_uberblock;
763 (char *)vl + offsetof(vdev_label_t, vl_vdev_phys);
764 zio_eck_t *vdev_eck =
765 (zio_eck_t *)((char *)(vdev_data) + VDEV_PHYS_SIZE) - 1;
766 const uint64_t vdev_phys_offset =
767 label_offset + offsetof(vdev_label_t, vl_vdev_phys);
768 const char *cfg_keys[] = { ZPOOL_CONFIG_VERSION,
769 ZPOOL_CONFIG_POOL_STATE, ZPOOL_CONFIG_GUID };
771 nvlist_t *vdev_tree_cfg = NULL;
775 err = zhack_repair_read_label(fd, vl, label_offset, l);
779 if (vdev_eck->zec_magic == 0) {
780 (void) fprintf(stderr, "error: label %d: "
781 "Expected the nvlist checksum magic number to not be zero"
784 (void) fprintf(stderr, "There should already be a checksum "
790 (vdev_eck->zec_magic == BSWAP_64((uint64_t)ZEC_MAGIC));
793 byteswap_uint64_array(&vdev_eck->zec_cksum,
794 sizeof (zio_cksum_t));
795 vdev_eck->zec_magic = BSWAP_64(vdev_eck->zec_magic);
798 if ((op & ZHACK_REPAIR_OP_CKSUM) == 0 &&
799 zhack_repair_test_cksum(byteswap, vdev_data, vdev_eck,
800 vdev_phys_offset, l) != 0) {
801 (void) fprintf(stderr, "It would appear checksums are "
802 "corrupted. Try zhack repair label -c <device>\n");
806 err = nvlist_unpack(vl->vl_vdev_phys.vp_nvlist,
807 VDEV_PHYS_SIZE - sizeof (zio_eck_t), &cfg, 0);
809 (void) fprintf(stderr,
810 "error: cannot unpack nvlist label %d\n", l);
814 err = zhack_repair_check_label(ub,
815 l, cfg_keys, ARRAY_SIZE(cfg_keys), cfg, vdev_tree_cfg, &ashift);
819 if ((op & ZHACK_REPAIR_OP_UNDETACH) != 0) {
823 err = zhack_repair_undetach(ub, cfg, l);
827 buf = vl->vl_vdev_phys.vp_nvlist;
828 buflen = VDEV_PHYS_SIZE - sizeof (zio_eck_t);
829 if (nvlist_pack(cfg, &buf, &buflen, NV_ENCODE_XDR, 0) != 0) {
830 (void) fprintf(stderr,
831 "error: label %d: Failed to pack nvlist\n", l);
835 zhack_repair_write_uberblock(vl,
836 l, ashift, fd, byteswap, label_offset, labels_repaired);
839 if (zhack_repair_write_label(l, fd, byteswap, vdev_data, vdev_eck,
840 vdev_phys_offset, VDEV_PHYS_SIZE))
841 labels_repaired[l] |= REPAIR_LABEL_STATUS_CKSUM;
847 zhack_repair_label_status(const uint32_t label_status,
848 const uint32_t to_check)
850 return ((label_status & to_check) != 0 ? "repaired" : "skipped");
854 zhack_label_repair(const zhack_repair_op_t op, const int argc, char **argv)
856 uint32_t labels_repaired[VDEV_LABELS] = {0};
857 vdev_label_t labels[VDEV_LABELS] = {{{0}}};
861 uint32_t repaired = 0;
866 (void) fprintf(stderr, "error: missing device\n");
870 if ((fd = open(argv[0], O_RDWR)) == -1)
871 fatal(NULL, FTAG, "cannot open '%s': %s", argv[0],
874 if (fstat64_blk(fd, &st) != 0)
875 fatal(NULL, FTAG, "cannot stat '%s': %s", argv[0],
878 filesize = st.st_size;
879 (void) fprintf(stderr, "Calculated filesize to be %jd\n",
882 if (filesize % sizeof (vdev_label_t) != 0)
884 (filesize / sizeof (vdev_label_t)) * sizeof (vdev_label_t);
886 for (int l = 0; l < VDEV_LABELS; l++) {
887 zhack_repair_one_label(op, fd, &labels[l],
888 vdev_label_offset(filesize, l, 0), l, labels_repaired);
895 for (int l = 0; l < VDEV_LABELS; l++) {
896 const uint32_t lr = labels_repaired[l];
897 (void) printf("label %d: ", l);
898 (void) printf("uberblock: %s ",
899 zhack_repair_label_status(lr, REPAIR_LABEL_STATUS_UB));
900 (void) printf("checksum: %s\n",
901 zhack_repair_label_status(lr, REPAIR_LABEL_STATUS_CKSUM));
912 zhack_do_label_repair(int argc, char **argv)
914 zhack_repair_op_t op = ZHACK_REPAIR_OP_UNKNOWN;
918 while ((c = getopt(argc, argv, "+cu")) != -1) {
921 op |= ZHACK_REPAIR_OP_CKSUM;
924 op |= ZHACK_REPAIR_OP_UNDETACH;
935 if (op == ZHACK_REPAIR_OP_UNKNOWN)
936 op = ZHACK_REPAIR_OP_CKSUM;
938 return (zhack_label_repair(op, argc, argv));
942 zhack_do_label(int argc, char **argv)
950 (void) fprintf(stderr,
951 "error: no label operation specified\n");
955 subcommand = argv[0];
956 if (strcmp(subcommand, "repair") == 0) {
957 err = zhack_do_label_repair(argc, argv);
959 (void) fprintf(stderr, "error: unknown subcommand: %s\n",
967 #define MAX_NUM_PATHS 1024
970 main(int argc, char **argv)
972 char *path[MAX_NUM_PATHS];
973 const char *subcommand;
977 g_importargs.path = path;
979 dprintf_setup(&argc, argv);
982 while ((c = getopt(argc, argv, "+c:d:")) != -1) {
985 g_importargs.cachefile = optarg;
988 assert(g_importargs.paths < MAX_NUM_PATHS);
989 g_importargs.path[g_importargs.paths++] = optarg;
1002 (void) fprintf(stderr, "error: no command specified\n");
1006 subcommand = argv[0];
1008 if (strcmp(subcommand, "feature") == 0) {
1009 rv = zhack_do_feature(argc, argv);
1010 } else if (strcmp(subcommand, "label") == 0) {
1011 return (zhack_do_label(argc, argv));
1013 (void) fprintf(stderr, "error: unknown subcommand: %s\n",
1018 if (!g_readonly && spa_export(g_pool, NULL, B_TRUE, B_FALSE) != 0) {
1019 fatal(NULL, FTAG, "pool export failed; "
1020 "changes may not be committed to disk\n");