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3956 ::vdev -r should work with pipelines
3957 ztest should update the cachefile before killing itself
3958 multiple scans can lead to partial resilvering
3959 ddt entries are not always resilvered
3960 dsl_scan can skip over dedup-ed blocks if physical birth != logical birth
3961 freed gang blocks are not resilvered and can cause pool to suspend
3962 ztest should print out zfs debug buffer before exiting
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>


1123  * If '-r' is specified, recursively visit all children.
1124  *
1125  * With '-e', the statistics associated with the vdev are printed as well.
1126  */
1127 static int
1128 do_print_vdev(uintptr_t addr, int flags, int depth, int stats,
1129     int recursive)
1130 {
1131         vdev_t vdev;
1132         char desc[MAXNAMELEN];
1133         int c, children;
1134         uintptr_t *child;
1135         const char *state, *aux;
1136 
1137         if (mdb_vread(&vdev, sizeof (vdev), (uintptr_t)addr) == -1) {
1138                 mdb_warn("failed to read vdev_t at %p\n", (uintptr_t)addr);
1139                 return (DCMD_ERR);
1140         }
1141 
1142         if (flags & DCMD_PIPE_OUT) {
1143                 mdb_printf("%#lr", addr);
1144         } else {
1145                 if (vdev.vdev_path != NULL) {
1146                         if (mdb_readstr(desc, sizeof (desc),
1147                             (uintptr_t)vdev.vdev_path) == -1) {
1148                                 mdb_warn("failed to read vdev_path at %p\n",
1149                                     vdev.vdev_path);
1150                                 return (DCMD_ERR);
1151                         }
1152                 } else if (vdev.vdev_ops != NULL) {
1153                         vdev_ops_t ops;
1154                         if (mdb_vread(&ops, sizeof (ops),
1155                             (uintptr_t)vdev.vdev_ops) == -1) {
1156                                 mdb_warn("failed to read vdev_ops at %p\n",
1157                                     vdev.vdev_ops);
1158                                 return (DCMD_ERR);
1159                         }
1160                         (void) strcpy(desc, ops.vdev_op_type);
1161                 } else {
1162                         (void) strcpy(desc, "<unknown>");
1163                 }




1123  * If '-r' is specified, recursively visit all children.
1124  *
1125  * With '-e', the statistics associated with the vdev are printed as well.
1126  */
1127 static int
1128 do_print_vdev(uintptr_t addr, int flags, int depth, int stats,
1129     int recursive)
1130 {
1131         vdev_t vdev;
1132         char desc[MAXNAMELEN];
1133         int c, children;
1134         uintptr_t *child;
1135         const char *state, *aux;
1136 
1137         if (mdb_vread(&vdev, sizeof (vdev), (uintptr_t)addr) == -1) {
1138                 mdb_warn("failed to read vdev_t at %p\n", (uintptr_t)addr);
1139                 return (DCMD_ERR);
1140         }
1141 
1142         if (flags & DCMD_PIPE_OUT) {
1143                 mdb_printf("%#lr\n", addr);
1144         } else {
1145                 if (vdev.vdev_path != NULL) {
1146                         if (mdb_readstr(desc, sizeof (desc),
1147                             (uintptr_t)vdev.vdev_path) == -1) {
1148                                 mdb_warn("failed to read vdev_path at %p\n",
1149                                     vdev.vdev_path);
1150                                 return (DCMD_ERR);
1151                         }
1152                 } else if (vdev.vdev_ops != NULL) {
1153                         vdev_ops_t ops;
1154                         if (mdb_vread(&ops, sizeof (ops),
1155                             (uintptr_t)vdev.vdev_ops) == -1) {
1156                                 mdb_warn("failed to read vdev_ops at %p\n",
1157                                     vdev.vdev_ops);
1158                                 return (DCMD_ERR);
1159                         }
1160                         (void) strcpy(desc, ops.vdev_op_type);
1161                 } else {
1162                         (void) strcpy(desc, "<unknown>");
1163                 }