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 http://www.opensolaris.org/os/licensing.
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]
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
26 #include <sys/dmu_impl.h>
27 #include <sys/dmu_tx.h>
29 #include <sys/dnode.h>
30 #include <sys/zfs_context.h>
31 #include <sys/dmu_objset.h>
32 #include <sys/dmu_traverse.h>
33 #include <sys/dsl_dataset.h>
34 #include <sys/dsl_dir.h>
35 #include <sys/dsl_prop.h>
36 #include <sys/dsl_pool.h>
37 #include <sys/dsl_synctask.h>
38 #include <sys/zfs_ioctl.h>
40 #include <sys/zio_checksum.h>
41 #include <sys/zfs_znode.h>
42 #include <zfs_fletcher.h>
45 #include <sys/zfs_onexit.h>
47 static char *dmu_recv_tag = "dmu_recv_tag";
50 * The list of data whose inclusion in a send stream can be pending from
51 * one call to backup_cb to another. Multiple calls to dump_free() and
52 * dump_freeobjects() can be aggregated into a single DRR_FREE or
53 * DRR_FREEOBJECTS replay record.
62 dmu_replay_record_t *drr;
73 dump_bytes(struct backuparg *ba, void *buf, int len)
75 ssize_t resid; /* have to get resid to get detailed errno */
76 ASSERT3U(len % 8, ==, 0);
78 fletcher_4_incremental_native(buf, len, &ba->zc);
79 ba->err = vn_rdwr(UIO_WRITE, ba->vp,
81 0, UIO_SYSSPACE, FAPPEND, RLIM64_INFINITY, CRED(), &resid);
87 dump_free(struct backuparg *ba, uint64_t object, uint64_t offset,
90 struct drr_free *drrf = &(ba->drr->drr_u.drr_free);
93 * If there is a pending op, but it's not PENDING_FREE, push it out,
94 * since free block aggregation can only be done for blocks of the
95 * same type (i.e., DRR_FREE records can only be aggregated with
96 * other DRR_FREE records. DRR_FREEOBJECTS records can only be
97 * aggregated with other DRR_FREEOBJECTS records.
99 if (ba->pending_op != PENDING_NONE && ba->pending_op != PENDING_FREE) {
100 if (dump_bytes(ba, ba->drr, sizeof (dmu_replay_record_t)) != 0)
102 ba->pending_op = PENDING_NONE;
105 if (ba->pending_op == PENDING_FREE) {
107 * There should never be a PENDING_FREE if length is -1
108 * (because dump_dnode is the only place where this
109 * function is called with a -1, and only after flushing
110 * any pending record).
112 ASSERT(length != -1ULL);
114 * Check to see whether this free block can be aggregated
117 if (drrf->drr_object == object && drrf->drr_offset +
118 drrf->drr_length == offset) {
119 drrf->drr_length += length;
122 /* not a continuation. Push out pending record */
123 if (dump_bytes(ba, ba->drr,
124 sizeof (dmu_replay_record_t)) != 0)
126 ba->pending_op = PENDING_NONE;
129 /* create a FREE record and make it pending */
130 bzero(ba->drr, sizeof (dmu_replay_record_t));
131 ba->drr->drr_type = DRR_FREE;
132 drrf->drr_object = object;
133 drrf->drr_offset = offset;
134 drrf->drr_length = length;
135 drrf->drr_toguid = ba->toguid;
136 if (length == -1ULL) {
137 if (dump_bytes(ba, ba->drr, sizeof (dmu_replay_record_t)) != 0)
140 ba->pending_op = PENDING_FREE;
147 dump_data(struct backuparg *ba, dmu_object_type_t type,
148 uint64_t object, uint64_t offset, int blksz, const blkptr_t *bp, void *data)
150 struct drr_write *drrw = &(ba->drr->drr_u.drr_write);
154 * If there is any kind of pending aggregation (currently either
155 * a grouping of free objects or free blocks), push it out to
156 * the stream, since aggregation can't be done across operations
157 * of different types.
159 if (ba->pending_op != PENDING_NONE) {
160 if (dump_bytes(ba, ba->drr, sizeof (dmu_replay_record_t)) != 0)
162 ba->pending_op = PENDING_NONE;
164 /* write a DATA record */
165 bzero(ba->drr, sizeof (dmu_replay_record_t));
166 ba->drr->drr_type = DRR_WRITE;
167 drrw->drr_object = object;
168 drrw->drr_type = type;
169 drrw->drr_offset = offset;
170 drrw->drr_length = blksz;
171 drrw->drr_toguid = ba->toguid;
172 drrw->drr_checksumtype = BP_GET_CHECKSUM(bp);
173 if (zio_checksum_table[drrw->drr_checksumtype].ci_dedup)
174 drrw->drr_checksumflags |= DRR_CHECKSUM_DEDUP;
175 DDK_SET_LSIZE(&drrw->drr_key, BP_GET_LSIZE(bp));
176 DDK_SET_PSIZE(&drrw->drr_key, BP_GET_PSIZE(bp));
177 DDK_SET_COMPRESS(&drrw->drr_key, BP_GET_COMPRESS(bp));
178 drrw->drr_key.ddk_cksum = bp->blk_cksum;
180 if (dump_bytes(ba, ba->drr, sizeof (dmu_replay_record_t)) != 0)
182 if (dump_bytes(ba, data, blksz) != 0)
188 dump_spill(struct backuparg *ba, uint64_t object, int blksz, void *data)
190 struct drr_spill *drrs = &(ba->drr->drr_u.drr_spill);
192 if (ba->pending_op != PENDING_NONE) {
193 if (dump_bytes(ba, ba->drr, sizeof (dmu_replay_record_t)) != 0)
195 ba->pending_op = PENDING_NONE;
198 /* write a SPILL record */
199 bzero(ba->drr, sizeof (dmu_replay_record_t));
200 ba->drr->drr_type = DRR_SPILL;
201 drrs->drr_object = object;
202 drrs->drr_length = blksz;
203 drrs->drr_toguid = ba->toguid;
205 if (dump_bytes(ba, ba->drr, sizeof (dmu_replay_record_t)))
207 if (dump_bytes(ba, data, blksz))
213 dump_freeobjects(struct backuparg *ba, uint64_t firstobj, uint64_t numobjs)
215 struct drr_freeobjects *drrfo = &(ba->drr->drr_u.drr_freeobjects);
218 * If there is a pending op, but it's not PENDING_FREEOBJECTS,
219 * push it out, since free block aggregation can only be done for
220 * blocks of the same type (i.e., DRR_FREE records can only be
221 * aggregated with other DRR_FREE records. DRR_FREEOBJECTS records
222 * can only be aggregated with other DRR_FREEOBJECTS records.
224 if (ba->pending_op != PENDING_NONE &&
225 ba->pending_op != PENDING_FREEOBJECTS) {
226 if (dump_bytes(ba, ba->drr, sizeof (dmu_replay_record_t)) != 0)
228 ba->pending_op = PENDING_NONE;
230 if (ba->pending_op == PENDING_FREEOBJECTS) {
232 * See whether this free object array can be aggregated
235 if (drrfo->drr_firstobj + drrfo->drr_numobjs == firstobj) {
236 drrfo->drr_numobjs += numobjs;
239 /* can't be aggregated. Push out pending record */
240 if (dump_bytes(ba, ba->drr,
241 sizeof (dmu_replay_record_t)) != 0)
243 ba->pending_op = PENDING_NONE;
247 /* write a FREEOBJECTS record */
248 bzero(ba->drr, sizeof (dmu_replay_record_t));
249 ba->drr->drr_type = DRR_FREEOBJECTS;
250 drrfo->drr_firstobj = firstobj;
251 drrfo->drr_numobjs = numobjs;
252 drrfo->drr_toguid = ba->toguid;
254 ba->pending_op = PENDING_FREEOBJECTS;
260 dump_dnode(struct backuparg *ba, uint64_t object, dnode_phys_t *dnp)
262 struct drr_object *drro = &(ba->drr->drr_u.drr_object);
264 if (dnp == NULL || dnp->dn_type == DMU_OT_NONE)
265 return (dump_freeobjects(ba, object, 1));
267 if (ba->pending_op != PENDING_NONE) {
268 if (dump_bytes(ba, ba->drr, sizeof (dmu_replay_record_t)) != 0)
270 ba->pending_op = PENDING_NONE;
273 /* write an OBJECT record */
274 bzero(ba->drr, sizeof (dmu_replay_record_t));
275 ba->drr->drr_type = DRR_OBJECT;
276 drro->drr_object = object;
277 drro->drr_type = dnp->dn_type;
278 drro->drr_bonustype = dnp->dn_bonustype;
279 drro->drr_blksz = dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT;
280 drro->drr_bonuslen = dnp->dn_bonuslen;
281 drro->drr_checksumtype = dnp->dn_checksum;
282 drro->drr_compress = dnp->dn_compress;
283 drro->drr_toguid = ba->toguid;
285 if (dump_bytes(ba, ba->drr, sizeof (dmu_replay_record_t)) != 0)
288 if (dump_bytes(ba, DN_BONUS(dnp), P2ROUNDUP(dnp->dn_bonuslen, 8)) != 0)
291 /* free anything past the end of the file */
292 if (dump_free(ba, object, (dnp->dn_maxblkid + 1) *
293 (dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT), -1ULL))
300 #define BP_SPAN(dnp, level) \
301 (((uint64_t)dnp->dn_datablkszsec) << (SPA_MINBLOCKSHIFT + \
302 (level) * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT)))
306 backup_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, arc_buf_t *pbuf,
307 const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
309 struct backuparg *ba = arg;
310 dmu_object_type_t type = bp ? BP_GET_TYPE(bp) : DMU_OT_NONE;
313 if (issig(JUSTLOOKING) && issig(FORREAL))
316 if (zb->zb_object != DMU_META_DNODE_OBJECT &&
317 DMU_OBJECT_IS_SPECIAL(zb->zb_object)) {
319 } else if (bp == NULL && zb->zb_object == DMU_META_DNODE_OBJECT) {
320 uint64_t span = BP_SPAN(dnp, zb->zb_level);
321 uint64_t dnobj = (zb->zb_blkid * span) >> DNODE_SHIFT;
322 err = dump_freeobjects(ba, dnobj, span >> DNODE_SHIFT);
323 } else if (bp == NULL) {
324 uint64_t span = BP_SPAN(dnp, zb->zb_level);
325 err = dump_free(ba, zb->zb_object, zb->zb_blkid * span, span);
326 } else if (zb->zb_level > 0 || type == DMU_OT_OBJSET) {
328 } else if (type == DMU_OT_DNODE) {
331 int blksz = BP_GET_LSIZE(bp);
332 uint32_t aflags = ARC_WAIT;
335 if (dsl_read(NULL, spa, bp, pbuf,
336 arc_getbuf_func, &abuf, ZIO_PRIORITY_ASYNC_READ,
337 ZIO_FLAG_CANFAIL, &aflags, zb) != 0)
341 for (i = 0; i < blksz >> DNODE_SHIFT; i++) {
342 uint64_t dnobj = (zb->zb_blkid <<
343 (DNODE_BLOCK_SHIFT - DNODE_SHIFT)) + i;
344 err = dump_dnode(ba, dnobj, blk+i);
348 (void) arc_buf_remove_ref(abuf, &abuf);
349 } else if (type == DMU_OT_SA) {
350 uint32_t aflags = ARC_WAIT;
352 int blksz = BP_GET_LSIZE(bp);
354 if (arc_read_nolock(NULL, spa, bp,
355 arc_getbuf_func, &abuf, ZIO_PRIORITY_ASYNC_READ,
356 ZIO_FLAG_CANFAIL, &aflags, zb) != 0)
359 err = dump_spill(ba, zb->zb_object, blksz, abuf->b_data);
360 (void) arc_buf_remove_ref(abuf, &abuf);
361 } else { /* it's a level-0 block of a regular object */
362 uint32_t aflags = ARC_WAIT;
364 int blksz = BP_GET_LSIZE(bp);
366 if (dsl_read(NULL, spa, bp, pbuf,
367 arc_getbuf_func, &abuf, ZIO_PRIORITY_ASYNC_READ,
368 ZIO_FLAG_CANFAIL, &aflags, zb) != 0)
371 err = dump_data(ba, type, zb->zb_object, zb->zb_blkid * blksz,
372 blksz, bp, abuf->b_data);
373 (void) arc_buf_remove_ref(abuf, &abuf);
376 ASSERT(err == 0 || err == EINTR);
381 dmu_sendbackup(objset_t *tosnap, objset_t *fromsnap, boolean_t fromorigin,
382 vnode_t *vp, offset_t *off)
384 dsl_dataset_t *ds = tosnap->os_dsl_dataset;
385 dsl_dataset_t *fromds = fromsnap ? fromsnap->os_dsl_dataset : NULL;
386 dmu_replay_record_t *drr;
389 uint64_t fromtxg = 0;
391 /* tosnap must be a snapshot */
392 if (ds->ds_phys->ds_next_snap_obj == 0)
395 /* fromsnap must be an earlier snapshot from the same fs as tosnap */
396 if (fromds && (ds->ds_dir != fromds->ds_dir ||
397 fromds->ds_phys->ds_creation_txg >= ds->ds_phys->ds_creation_txg))
401 dsl_pool_t *dp = ds->ds_dir->dd_pool;
406 if (dsl_dir_is_clone(ds->ds_dir)) {
407 rw_enter(&dp->dp_config_rwlock, RW_READER);
408 err = dsl_dataset_hold_obj(dp,
409 ds->ds_dir->dd_phys->dd_origin_obj, FTAG, &fromds);
410 rw_exit(&dp->dp_config_rwlock);
414 fromorigin = B_FALSE;
419 drr = kmem_zalloc(sizeof (dmu_replay_record_t), KM_SLEEP);
420 drr->drr_type = DRR_BEGIN;
421 drr->drr_u.drr_begin.drr_magic = DMU_BACKUP_MAGIC;
422 DMU_SET_STREAM_HDRTYPE(drr->drr_u.drr_begin.drr_versioninfo,
426 if (dmu_objset_type(tosnap) == DMU_OST_ZFS) {
428 if (zfs_get_zplprop(tosnap, ZFS_PROP_VERSION, &version) != 0)
430 if (version == ZPL_VERSION_SA) {
431 DMU_SET_FEATUREFLAGS(
432 drr->drr_u.drr_begin.drr_versioninfo,
433 DMU_BACKUP_FEATURE_SA_SPILL);
438 drr->drr_u.drr_begin.drr_creation_time =
439 ds->ds_phys->ds_creation_time;
440 drr->drr_u.drr_begin.drr_type = tosnap->os_phys->os_type;
442 drr->drr_u.drr_begin.drr_flags |= DRR_FLAG_CLONE;
443 drr->drr_u.drr_begin.drr_toguid = ds->ds_phys->ds_guid;
444 if (ds->ds_phys->ds_flags & DS_FLAG_CI_DATASET)
445 drr->drr_u.drr_begin.drr_flags |= DRR_FLAG_CI_DATA;
448 drr->drr_u.drr_begin.drr_fromguid = fromds->ds_phys->ds_guid;
449 dsl_dataset_name(ds, drr->drr_u.drr_begin.drr_toname);
452 fromtxg = fromds->ds_phys->ds_creation_txg;
454 dsl_dataset_rele(fromds, FTAG);
460 ba.toguid = ds->ds_phys->ds_guid;
461 ZIO_SET_CHECKSUM(&ba.zc, 0, 0, 0, 0);
462 ba.pending_op = PENDING_NONE;
464 if (dump_bytes(&ba, drr, sizeof (dmu_replay_record_t)) != 0) {
465 kmem_free(drr, sizeof (dmu_replay_record_t));
469 err = traverse_dataset(ds, fromtxg, TRAVERSE_PRE | TRAVERSE_PREFETCH,
472 if (ba.pending_op != PENDING_NONE)
473 if (dump_bytes(&ba, drr, sizeof (dmu_replay_record_t)) != 0)
477 if (err == EINTR && ba.err)
479 kmem_free(drr, sizeof (dmu_replay_record_t));
483 bzero(drr, sizeof (dmu_replay_record_t));
484 drr->drr_type = DRR_END;
485 drr->drr_u.drr_end.drr_checksum = ba.zc;
486 drr->drr_u.drr_end.drr_toguid = ba.toguid;
488 if (dump_bytes(&ba, drr, sizeof (dmu_replay_record_t)) != 0) {
489 kmem_free(drr, sizeof (dmu_replay_record_t));
493 kmem_free(drr, sizeof (dmu_replay_record_t));
498 struct recvbeginsyncarg {
501 dsl_dataset_t *origin;
503 dmu_objset_type_t type;
507 char clonelastname[MAXNAMELEN];
508 dsl_dataset_t *ds; /* the ds to recv into; returned from the syncfunc */
514 recv_new_check(void *arg1, void *arg2, dmu_tx_t *tx)
516 dsl_dir_t *dd = arg1;
517 struct recvbeginsyncarg *rbsa = arg2;
518 objset_t *mos = dd->dd_pool->dp_meta_objset;
522 err = zap_lookup(mos, dd->dd_phys->dd_child_dir_zapobj,
523 strrchr(rbsa->tofs, '/') + 1, sizeof (uint64_t), 1, &val);
526 return (err ? err : EEXIST);
529 /* make sure it's a snap in the same pool */
530 if (rbsa->origin->ds_dir->dd_pool != dd->dd_pool)
532 if (!dsl_dataset_is_snapshot(rbsa->origin))
534 if (rbsa->origin->ds_phys->ds_guid != rbsa->fromguid)
542 recv_new_sync(void *arg1, void *arg2, dmu_tx_t *tx)
544 dsl_dir_t *dd = arg1;
545 struct recvbeginsyncarg *rbsa = arg2;
546 uint64_t flags = DS_FLAG_INCONSISTENT | rbsa->dsflags;
549 /* Create and open new dataset. */
550 dsobj = dsl_dataset_create_sync(dd, strrchr(rbsa->tofs, '/') + 1,
551 rbsa->origin, flags, rbsa->cr, tx);
552 VERIFY(0 == dsl_dataset_own_obj(dd->dd_pool, dsobj,
553 B_TRUE, dmu_recv_tag, &rbsa->ds));
555 if (rbsa->origin == NULL) {
556 (void) dmu_objset_create_impl(dd->dd_pool->dp_spa,
557 rbsa->ds, &rbsa->ds->ds_phys->ds_bp, rbsa->type, tx);
560 spa_history_log_internal(LOG_DS_REPLAY_FULL_SYNC,
561 dd->dd_pool->dp_spa, tx, "dataset = %lld", dsobj);
566 recv_existing_check(void *arg1, void *arg2, dmu_tx_t *tx)
568 dsl_dataset_t *ds = arg1;
569 struct recvbeginsyncarg *rbsa = arg2;
573 /* must not have any changes since most recent snapshot */
574 if (!rbsa->force && dsl_dataset_modified_since_lastsnap(ds))
577 /* new snapshot name must not exist */
578 err = zap_lookup(ds->ds_dir->dd_pool->dp_meta_objset,
579 ds->ds_phys->ds_snapnames_zapobj, rbsa->tosnap, 8, 1, &val);
585 if (rbsa->fromguid) {
586 /* if incremental, most recent snapshot must match fromguid */
587 if (ds->ds_prev == NULL)
591 * most recent snapshot must match fromguid, or there are no
592 * changes since the fromguid one
594 if (ds->ds_prev->ds_phys->ds_guid != rbsa->fromguid) {
595 uint64_t birth = ds->ds_prev->ds_phys->ds_bp.blk_birth;
596 uint64_t obj = ds->ds_prev->ds_phys->ds_prev_snap_obj;
599 err = dsl_dataset_hold_obj(ds->ds_dir->dd_pool,
603 if (snap->ds_phys->ds_creation_txg < birth) {
604 dsl_dataset_rele(snap, FTAG);
607 if (snap->ds_phys->ds_guid == rbsa->fromguid) {
608 dsl_dataset_rele(snap, FTAG);
611 obj = snap->ds_phys->ds_prev_snap_obj;
612 dsl_dataset_rele(snap, FTAG);
618 /* if full, most recent snapshot must be $ORIGIN */
619 if (ds->ds_phys->ds_prev_snap_txg >= TXG_INITIAL)
623 /* temporary clone name must not exist */
624 err = zap_lookup(ds->ds_dir->dd_pool->dp_meta_objset,
625 ds->ds_dir->dd_phys->dd_child_dir_zapobj,
626 rbsa->clonelastname, 8, 1, &val);
637 recv_existing_sync(void *arg1, void *arg2, dmu_tx_t *tx)
639 dsl_dataset_t *ohds = arg1;
640 struct recvbeginsyncarg *rbsa = arg2;
641 dsl_pool_t *dp = ohds->ds_dir->dd_pool;
643 uint64_t flags = DS_FLAG_INCONSISTENT | rbsa->dsflags;
646 /* create and open the temporary clone */
647 dsobj = dsl_dataset_create_sync(ohds->ds_dir, rbsa->clonelastname,
648 ohds->ds_prev, flags, rbsa->cr, tx);
649 VERIFY(0 == dsl_dataset_own_obj(dp, dsobj, B_TRUE, dmu_recv_tag, &cds));
652 * If we actually created a non-clone, we need to create the
653 * objset in our new dataset.
655 if (BP_IS_HOLE(dsl_dataset_get_blkptr(cds))) {
656 (void) dmu_objset_create_impl(dp->dp_spa,
657 cds, dsl_dataset_get_blkptr(cds), rbsa->type, tx);
662 spa_history_log_internal(LOG_DS_REPLAY_INC_SYNC,
663 dp->dp_spa, tx, "dataset = %lld", dsobj);
667 dmu_recv_verify_features(dsl_dataset_t *ds, struct drr_begin *drrb)
671 featureflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo);
673 /* Verify pool version supports SA if SA_SPILL feature set */
674 return ((featureflags & DMU_BACKUP_FEATURE_SA_SPILL) &&
675 (spa_version(dsl_dataset_get_spa(ds)) < SPA_VERSION_SA));
679 * NB: callers *MUST* call dmu_recv_stream() if dmu_recv_begin()
680 * succeeds; otherwise we will leak the holds on the datasets.
683 dmu_recv_begin(char *tofs, char *tosnap, char *top_ds, struct drr_begin *drrb,
684 boolean_t force, objset_t *origin, dmu_recv_cookie_t *drc)
688 struct recvbeginsyncarg rbsa = { 0 };
689 uint64_t versioninfo;
693 if (drrb->drr_magic == DMU_BACKUP_MAGIC)
695 else if (drrb->drr_magic == BSWAP_64(DMU_BACKUP_MAGIC))
701 rbsa.tosnap = tosnap;
702 rbsa.origin = origin ? origin->os_dsl_dataset : NULL;
703 rbsa.fromguid = drrb->drr_fromguid;
704 rbsa.type = drrb->drr_type;
708 versioninfo = drrb->drr_versioninfo;
709 flags = drrb->drr_flags;
712 rbsa.type = BSWAP_32(rbsa.type);
713 rbsa.fromguid = BSWAP_64(rbsa.fromguid);
714 versioninfo = BSWAP_64(versioninfo);
715 flags = BSWAP_32(flags);
718 if (DMU_GET_STREAM_HDRTYPE(versioninfo) == DMU_COMPOUNDSTREAM ||
719 rbsa.type >= DMU_OST_NUMTYPES ||
720 ((flags & DRR_FLAG_CLONE) && origin == NULL))
723 if (flags & DRR_FLAG_CI_DATA)
724 rbsa.dsflags = DS_FLAG_CI_DATASET;
726 bzero(drc, sizeof (dmu_recv_cookie_t));
727 drc->drc_drrb = drrb;
728 drc->drc_tosnap = tosnap;
729 drc->drc_top_ds = top_ds;
730 drc->drc_force = force;
733 * Process the begin in syncing context.
736 /* open the dataset we are logically receiving into */
737 err = dsl_dataset_hold(tofs, dmu_recv_tag, &ds);
739 if (dmu_recv_verify_features(ds, drrb)) {
740 dsl_dataset_rele(ds, dmu_recv_tag);
743 /* target fs already exists; recv into temp clone */
745 /* Can't recv a clone into an existing fs */
746 if (flags & DRR_FLAG_CLONE) {
747 dsl_dataset_rele(ds, dmu_recv_tag);
751 /* must not have an incremental recv already in progress */
752 if (!mutex_tryenter(&ds->ds_recvlock)) {
753 dsl_dataset_rele(ds, dmu_recv_tag);
757 /* tmp clone name is: tofs/%tosnap" */
758 (void) snprintf(rbsa.clonelastname, sizeof (rbsa.clonelastname),
761 err = dsl_sync_task_do(ds->ds_dir->dd_pool,
762 recv_existing_check, recv_existing_sync, ds, &rbsa, 5);
764 mutex_exit(&ds->ds_recvlock);
765 dsl_dataset_rele(ds, dmu_recv_tag);
768 drc->drc_logical_ds = ds;
769 drc->drc_real_ds = rbsa.ds;
770 } else if (err == ENOENT) {
771 /* target fs does not exist; must be a full backup or clone */
775 * If it's a non-clone incremental, we are missing the
776 * target fs, so fail the recv.
778 if (rbsa.fromguid && !(flags & DRR_FLAG_CLONE))
781 /* Open the parent of tofs */
782 cp = strrchr(tofs, '/');
784 err = dsl_dataset_hold(tofs, FTAG, &ds);
789 if (dmu_recv_verify_features(ds, drrb)) {
790 dsl_dataset_rele(ds, FTAG);
794 err = dsl_sync_task_do(ds->ds_dir->dd_pool,
795 recv_new_check, recv_new_sync, ds->ds_dir, &rbsa, 5);
796 dsl_dataset_rele(ds, FTAG);
799 drc->drc_logical_ds = drc->drc_real_ds = rbsa.ds;
800 drc->drc_newfs = B_TRUE;
812 int bufsize; /* amount of memory allocated for buf */
814 avl_tree_t *guid_to_ds_map;
817 typedef struct guid_map_entry {
819 dsl_dataset_t *gme_ds;
824 guid_compare(const void *arg1, const void *arg2)
826 const guid_map_entry_t *gmep1 = arg1;
827 const guid_map_entry_t *gmep2 = arg2;
829 if (gmep1->guid < gmep2->guid)
831 else if (gmep1->guid > gmep2->guid)
837 * This function is a callback used by dmu_objset_find() (which
838 * enumerates the object sets) to build an avl tree that maps guids
839 * to datasets. The resulting table is used when processing DRR_WRITE_BYREF
840 * send stream records. These records, which are used in dedup'ed
841 * streams, do not contain data themselves, but refer to a copy
842 * of the data block that has already been written because it was
843 * earlier in the stream. That previous copy is identified by the
844 * guid of the dataset with the referenced data.
847 find_ds_by_guid(const char *name, void *arg)
849 avl_tree_t *guid_map = arg;
850 dsl_dataset_t *ds, *snapds;
851 guid_map_entry_t *gmep;
854 uint64_t lastobj, firstobj;
856 if (dsl_dataset_hold(name, FTAG, &ds) != 0)
859 dp = ds->ds_dir->dd_pool;
860 rw_enter(&dp->dp_config_rwlock, RW_READER);
861 firstobj = ds->ds_dir->dd_phys->dd_origin_obj;
862 lastobj = ds->ds_phys->ds_prev_snap_obj;
864 while (lastobj != firstobj) {
865 err = dsl_dataset_hold_obj(dp, lastobj, guid_map, &snapds);
868 * Skip this snapshot and move on. It's not
869 * clear why this would ever happen, but the
870 * remainder of the snapshot streadm can be
873 rw_exit(&dp->dp_config_rwlock);
874 dsl_dataset_rele(ds, FTAG);
878 gmep = kmem_alloc(sizeof (guid_map_entry_t), KM_SLEEP);
879 gmep->guid = snapds->ds_phys->ds_guid;
880 gmep->gme_ds = snapds;
881 avl_add(guid_map, gmep);
882 lastobj = snapds->ds_phys->ds_prev_snap_obj;
885 rw_exit(&dp->dp_config_rwlock);
886 dsl_dataset_rele(ds, FTAG);
892 free_guid_map_onexit(void *arg)
894 avl_tree_t *ca = arg;
896 guid_map_entry_t *gmep;
898 while ((gmep = avl_destroy_nodes(ca, &cookie)) != NULL) {
899 dsl_dataset_rele(gmep->gme_ds, ca);
900 kmem_free(gmep, sizeof (guid_map_entry_t));
903 kmem_free(ca, sizeof (avl_tree_t));
907 restore_read(struct restorearg *ra, int len)
912 /* some things will require 8-byte alignment, so everything must */
913 ASSERT3U(len % 8, ==, 0);
918 ra->err = vn_rdwr(UIO_READ, ra->vp,
919 (caddr_t)ra->buf + done, len - done,
920 ra->voff, UIO_SYSSPACE, FAPPEND,
921 RLIM64_INFINITY, CRED(), &resid);
923 if (resid == len - done)
925 ra->voff += len - done - resid;
931 ASSERT3U(done, ==, len);
934 fletcher_4_incremental_byteswap(rv, len, &ra->cksum);
936 fletcher_4_incremental_native(rv, len, &ra->cksum);
941 backup_byteswap(dmu_replay_record_t *drr)
943 #define DO64(X) (drr->drr_u.X = BSWAP_64(drr->drr_u.X))
944 #define DO32(X) (drr->drr_u.X = BSWAP_32(drr->drr_u.X))
945 drr->drr_type = BSWAP_32(drr->drr_type);
946 drr->drr_payloadlen = BSWAP_32(drr->drr_payloadlen);
947 switch (drr->drr_type) {
949 DO64(drr_begin.drr_magic);
950 DO64(drr_begin.drr_versioninfo);
951 DO64(drr_begin.drr_creation_time);
952 DO32(drr_begin.drr_type);
953 DO32(drr_begin.drr_flags);
954 DO64(drr_begin.drr_toguid);
955 DO64(drr_begin.drr_fromguid);
958 DO64(drr_object.drr_object);
959 /* DO64(drr_object.drr_allocation_txg); */
960 DO32(drr_object.drr_type);
961 DO32(drr_object.drr_bonustype);
962 DO32(drr_object.drr_blksz);
963 DO32(drr_object.drr_bonuslen);
964 DO64(drr_object.drr_toguid);
966 case DRR_FREEOBJECTS:
967 DO64(drr_freeobjects.drr_firstobj);
968 DO64(drr_freeobjects.drr_numobjs);
969 DO64(drr_freeobjects.drr_toguid);
972 DO64(drr_write.drr_object);
973 DO32(drr_write.drr_type);
974 DO64(drr_write.drr_offset);
975 DO64(drr_write.drr_length);
976 DO64(drr_write.drr_toguid);
977 DO64(drr_write.drr_key.ddk_cksum.zc_word[0]);
978 DO64(drr_write.drr_key.ddk_cksum.zc_word[1]);
979 DO64(drr_write.drr_key.ddk_cksum.zc_word[2]);
980 DO64(drr_write.drr_key.ddk_cksum.zc_word[3]);
981 DO64(drr_write.drr_key.ddk_prop);
983 case DRR_WRITE_BYREF:
984 DO64(drr_write_byref.drr_object);
985 DO64(drr_write_byref.drr_offset);
986 DO64(drr_write_byref.drr_length);
987 DO64(drr_write_byref.drr_toguid);
988 DO64(drr_write_byref.drr_refguid);
989 DO64(drr_write_byref.drr_refobject);
990 DO64(drr_write_byref.drr_refoffset);
991 DO64(drr_write_byref.drr_key.ddk_cksum.zc_word[0]);
992 DO64(drr_write_byref.drr_key.ddk_cksum.zc_word[1]);
993 DO64(drr_write_byref.drr_key.ddk_cksum.zc_word[2]);
994 DO64(drr_write_byref.drr_key.ddk_cksum.zc_word[3]);
995 DO64(drr_write_byref.drr_key.ddk_prop);
998 DO64(drr_free.drr_object);
999 DO64(drr_free.drr_offset);
1000 DO64(drr_free.drr_length);
1001 DO64(drr_free.drr_toguid);
1004 DO64(drr_spill.drr_object);
1005 DO64(drr_spill.drr_length);
1006 DO64(drr_spill.drr_toguid);
1009 DO64(drr_end.drr_checksum.zc_word[0]);
1010 DO64(drr_end.drr_checksum.zc_word[1]);
1011 DO64(drr_end.drr_checksum.zc_word[2]);
1012 DO64(drr_end.drr_checksum.zc_word[3]);
1013 DO64(drr_end.drr_toguid);
1023 restore_object(struct restorearg *ra, objset_t *os, struct drr_object *drro)
1029 if (drro->drr_type == DMU_OT_NONE ||
1030 drro->drr_type >= DMU_OT_NUMTYPES ||
1031 drro->drr_bonustype >= DMU_OT_NUMTYPES ||
1032 drro->drr_checksumtype >= ZIO_CHECKSUM_FUNCTIONS ||
1033 drro->drr_compress >= ZIO_COMPRESS_FUNCTIONS ||
1034 P2PHASE(drro->drr_blksz, SPA_MINBLOCKSIZE) ||
1035 drro->drr_blksz < SPA_MINBLOCKSIZE ||
1036 drro->drr_blksz > SPA_MAXBLOCKSIZE ||
1037 drro->drr_bonuslen > DN_MAX_BONUSLEN) {
1041 err = dmu_object_info(os, drro->drr_object, NULL);
1043 if (err != 0 && err != ENOENT)
1046 if (drro->drr_bonuslen) {
1047 data = restore_read(ra, P2ROUNDUP(drro->drr_bonuslen, 8));
1052 if (err == ENOENT) {
1053 /* currently free, want to be allocated */
1054 tx = dmu_tx_create(os);
1055 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT);
1056 err = dmu_tx_assign(tx, TXG_WAIT);
1061 err = dmu_object_claim(os, drro->drr_object,
1062 drro->drr_type, drro->drr_blksz,
1063 drro->drr_bonustype, drro->drr_bonuslen, tx);
1066 /* currently allocated, want to be allocated */
1067 err = dmu_object_reclaim(os, drro->drr_object,
1068 drro->drr_type, drro->drr_blksz,
1069 drro->drr_bonustype, drro->drr_bonuslen);
1075 tx = dmu_tx_create(os);
1076 dmu_tx_hold_bonus(tx, drro->drr_object);
1077 err = dmu_tx_assign(tx, TXG_WAIT);
1083 dmu_object_set_checksum(os, drro->drr_object, drro->drr_checksumtype,
1085 dmu_object_set_compress(os, drro->drr_object, drro->drr_compress, tx);
1090 VERIFY(0 == dmu_bonus_hold(os, drro->drr_object, FTAG, &db));
1091 dmu_buf_will_dirty(db, tx);
1093 ASSERT3U(db->db_size, >=, drro->drr_bonuslen);
1094 bcopy(data, db->db_data, drro->drr_bonuslen);
1096 dmu_ot[drro->drr_bonustype].ot_byteswap(db->db_data,
1097 drro->drr_bonuslen);
1099 dmu_buf_rele(db, FTAG);
1107 restore_freeobjects(struct restorearg *ra, objset_t *os,
1108 struct drr_freeobjects *drrfo)
1112 if (drrfo->drr_firstobj + drrfo->drr_numobjs < drrfo->drr_firstobj)
1115 for (obj = drrfo->drr_firstobj;
1116 obj < drrfo->drr_firstobj + drrfo->drr_numobjs;
1117 (void) dmu_object_next(os, &obj, FALSE, 0)) {
1120 if (dmu_object_info(os, obj, NULL) != 0)
1123 err = dmu_free_object(os, obj);
1131 restore_write(struct restorearg *ra, objset_t *os,
1132 struct drr_write *drrw)
1138 if (drrw->drr_offset + drrw->drr_length < drrw->drr_offset ||
1139 drrw->drr_type >= DMU_OT_NUMTYPES)
1142 data = restore_read(ra, drrw->drr_length);
1146 if (dmu_object_info(os, drrw->drr_object, NULL) != 0)
1149 tx = dmu_tx_create(os);
1151 dmu_tx_hold_write(tx, drrw->drr_object,
1152 drrw->drr_offset, drrw->drr_length);
1153 err = dmu_tx_assign(tx, TXG_WAIT);
1159 dmu_ot[drrw->drr_type].ot_byteswap(data, drrw->drr_length);
1160 dmu_write(os, drrw->drr_object,
1161 drrw->drr_offset, drrw->drr_length, data, tx);
1167 * Handle a DRR_WRITE_BYREF record. This record is used in dedup'ed
1168 * streams to refer to a copy of the data that is already on the
1169 * system because it came in earlier in the stream. This function
1170 * finds the earlier copy of the data, and uses that copy instead of
1171 * data from the stream to fulfill this write.
1174 restore_write_byref(struct restorearg *ra, objset_t *os,
1175 struct drr_write_byref *drrwbr)
1179 guid_map_entry_t gmesrch;
1180 guid_map_entry_t *gmep;
1182 objset_t *ref_os = NULL;
1185 if (drrwbr->drr_offset + drrwbr->drr_length < drrwbr->drr_offset)
1189 * If the GUID of the referenced dataset is different from the
1190 * GUID of the target dataset, find the referenced dataset.
1192 if (drrwbr->drr_toguid != drrwbr->drr_refguid) {
1193 gmesrch.guid = drrwbr->drr_refguid;
1194 if ((gmep = avl_find(ra->guid_to_ds_map, &gmesrch,
1198 if (dmu_objset_from_ds(gmep->gme_ds, &ref_os))
1204 err = dmu_buf_hold(ref_os, drrwbr->drr_refobject,
1205 drrwbr->drr_refoffset, FTAG, &dbp, DMU_READ_PREFETCH);
1209 tx = dmu_tx_create(os);
1211 dmu_tx_hold_write(tx, drrwbr->drr_object,
1212 drrwbr->drr_offset, drrwbr->drr_length);
1213 err = dmu_tx_assign(tx, TXG_WAIT);
1218 dmu_write(os, drrwbr->drr_object,
1219 drrwbr->drr_offset, drrwbr->drr_length, dbp->db_data, tx);
1220 dmu_buf_rele(dbp, FTAG);
1226 restore_spill(struct restorearg *ra, objset_t *os, struct drr_spill *drrs)
1230 dmu_buf_t *db, *db_spill;
1233 if (drrs->drr_length < SPA_MINBLOCKSIZE ||
1234 drrs->drr_length > SPA_MAXBLOCKSIZE)
1237 data = restore_read(ra, drrs->drr_length);
1241 if (dmu_object_info(os, drrs->drr_object, NULL) != 0)
1244 VERIFY(0 == dmu_bonus_hold(os, drrs->drr_object, FTAG, &db));
1245 if ((err = dmu_spill_hold_by_bonus(db, FTAG, &db_spill)) != 0) {
1246 dmu_buf_rele(db, FTAG);
1250 tx = dmu_tx_create(os);
1252 dmu_tx_hold_spill(tx, db->db_object);
1254 err = dmu_tx_assign(tx, TXG_WAIT);
1256 dmu_buf_rele(db, FTAG);
1257 dmu_buf_rele(db_spill, FTAG);
1261 dmu_buf_will_dirty(db_spill, tx);
1263 if (db_spill->db_size < drrs->drr_length)
1264 VERIFY(0 == dbuf_spill_set_blksz(db_spill,
1265 drrs->drr_length, tx));
1266 bcopy(data, db_spill->db_data, drrs->drr_length);
1268 dmu_buf_rele(db, FTAG);
1269 dmu_buf_rele(db_spill, FTAG);
1277 restore_free(struct restorearg *ra, objset_t *os,
1278 struct drr_free *drrf)
1282 if (drrf->drr_length != -1ULL &&
1283 drrf->drr_offset + drrf->drr_length < drrf->drr_offset)
1286 if (dmu_object_info(os, drrf->drr_object, NULL) != 0)
1289 err = dmu_free_long_range(os, drrf->drr_object,
1290 drrf->drr_offset, drrf->drr_length);
1295 * NB: callers *must* call dmu_recv_end() if this succeeds.
1298 dmu_recv_stream(dmu_recv_cookie_t *drc, vnode_t *vp, offset_t *voffp,
1299 int cleanup_fd, uint64_t *action_handlep)
1301 struct restorearg ra = { 0 };
1302 dmu_replay_record_t *drr;
1307 if (drc->drc_drrb->drr_magic == BSWAP_64(DMU_BACKUP_MAGIC))
1311 /* compute checksum of drr_begin record */
1312 dmu_replay_record_t *drr;
1313 drr = kmem_zalloc(sizeof (dmu_replay_record_t), KM_SLEEP);
1315 drr->drr_type = DRR_BEGIN;
1316 drr->drr_u.drr_begin = *drc->drc_drrb;
1318 fletcher_4_incremental_byteswap(drr,
1319 sizeof (dmu_replay_record_t), &ra.cksum);
1321 fletcher_4_incremental_native(drr,
1322 sizeof (dmu_replay_record_t), &ra.cksum);
1324 kmem_free(drr, sizeof (dmu_replay_record_t));
1328 struct drr_begin *drrb = drc->drc_drrb;
1329 drrb->drr_magic = BSWAP_64(drrb->drr_magic);
1330 drrb->drr_versioninfo = BSWAP_64(drrb->drr_versioninfo);
1331 drrb->drr_creation_time = BSWAP_64(drrb->drr_creation_time);
1332 drrb->drr_type = BSWAP_32(drrb->drr_type);
1333 drrb->drr_toguid = BSWAP_64(drrb->drr_toguid);
1334 drrb->drr_fromguid = BSWAP_64(drrb->drr_fromguid);
1340 ra.buf = kmem_alloc(ra.bufsize, KM_SLEEP);
1342 /* these were verified in dmu_recv_begin */
1343 ASSERT(DMU_GET_STREAM_HDRTYPE(drc->drc_drrb->drr_versioninfo) ==
1345 ASSERT(drc->drc_drrb->drr_type < DMU_OST_NUMTYPES);
1348 * Open the objset we are modifying.
1350 VERIFY(dmu_objset_from_ds(drc->drc_real_ds, &os) == 0);
1352 ASSERT(drc->drc_real_ds->ds_phys->ds_flags & DS_FLAG_INCONSISTENT);
1354 featureflags = DMU_GET_FEATUREFLAGS(drc->drc_drrb->drr_versioninfo);
1356 /* if this stream is dedup'ed, set up the avl tree for guid mapping */
1357 if (featureflags & DMU_BACKUP_FEATURE_DEDUP) {
1360 if (cleanup_fd == -1) {
1364 ra.err = zfs_onexit_fd_hold(cleanup_fd, &minor);
1370 if (*action_handlep == 0) {
1372 kmem_alloc(sizeof (avl_tree_t), KM_SLEEP);
1373 avl_create(ra.guid_to_ds_map, guid_compare,
1374 sizeof (guid_map_entry_t),
1375 offsetof(guid_map_entry_t, avlnode));
1376 (void) dmu_objset_find(drc->drc_top_ds, find_ds_by_guid,
1377 (void *)ra.guid_to_ds_map,
1379 ra.err = zfs_onexit_add_cb(minor,
1380 free_guid_map_onexit, ra.guid_to_ds_map,
1385 ra.err = zfs_onexit_cb_data(minor, *action_handlep,
1386 (void **)&ra.guid_to_ds_map);
1393 * Read records and process them.
1396 while (ra.err == 0 &&
1397 NULL != (drr = restore_read(&ra, sizeof (*drr)))) {
1398 if (issig(JUSTLOOKING) && issig(FORREAL)) {
1404 backup_byteswap(drr);
1406 switch (drr->drr_type) {
1410 * We need to make a copy of the record header,
1411 * because restore_{object,write} may need to
1412 * restore_read(), which will invalidate drr.
1414 struct drr_object drro = drr->drr_u.drr_object;
1415 ra.err = restore_object(&ra, os, &drro);
1418 case DRR_FREEOBJECTS:
1420 struct drr_freeobjects drrfo =
1421 drr->drr_u.drr_freeobjects;
1422 ra.err = restore_freeobjects(&ra, os, &drrfo);
1427 struct drr_write drrw = drr->drr_u.drr_write;
1428 ra.err = restore_write(&ra, os, &drrw);
1431 case DRR_WRITE_BYREF:
1433 struct drr_write_byref drrwbr =
1434 drr->drr_u.drr_write_byref;
1435 ra.err = restore_write_byref(&ra, os, &drrwbr);
1440 struct drr_free drrf = drr->drr_u.drr_free;
1441 ra.err = restore_free(&ra, os, &drrf);
1446 struct drr_end drre = drr->drr_u.drr_end;
1448 * We compare against the *previous* checksum
1449 * value, because the stored checksum is of
1450 * everything before the DRR_END record.
1452 if (!ZIO_CHECKSUM_EQUAL(drre.drr_checksum, pcksum))
1458 struct drr_spill drrs = drr->drr_u.drr_spill;
1459 ra.err = restore_spill(&ra, os, &drrs);
1468 ASSERT(ra.err != 0);
1471 if ((featureflags & DMU_BACKUP_FEATURE_DEDUP) && (cleanup_fd != -1))
1472 zfs_onexit_fd_rele(cleanup_fd);
1476 * destroy what we created, so we don't leave it in the
1477 * inconsistent restoring state.
1479 txg_wait_synced(drc->drc_real_ds->ds_dir->dd_pool, 0);
1481 (void) dsl_dataset_destroy(drc->drc_real_ds, dmu_recv_tag,
1483 if (drc->drc_real_ds != drc->drc_logical_ds) {
1484 mutex_exit(&drc->drc_logical_ds->ds_recvlock);
1485 dsl_dataset_rele(drc->drc_logical_ds, dmu_recv_tag);
1489 kmem_free(ra.buf, ra.bufsize);
1494 struct recvendsyncarg {
1496 uint64_t creation_time;
1501 recv_end_check(void *arg1, void *arg2, dmu_tx_t *tx)
1503 dsl_dataset_t *ds = arg1;
1504 struct recvendsyncarg *resa = arg2;
1506 return (dsl_dataset_snapshot_check(ds, resa->tosnap, tx));
1510 recv_end_sync(void *arg1, void *arg2, dmu_tx_t *tx)
1512 dsl_dataset_t *ds = arg1;
1513 struct recvendsyncarg *resa = arg2;
1515 dsl_dataset_snapshot_sync(ds, resa->tosnap, tx);
1517 /* set snapshot's creation time and guid */
1518 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx);
1519 ds->ds_prev->ds_phys->ds_creation_time = resa->creation_time;
1520 ds->ds_prev->ds_phys->ds_guid = resa->toguid;
1521 ds->ds_prev->ds_phys->ds_flags &= ~DS_FLAG_INCONSISTENT;
1523 dmu_buf_will_dirty(ds->ds_dbuf, tx);
1524 ds->ds_phys->ds_flags &= ~DS_FLAG_INCONSISTENT;
1528 dmu_recv_existing_end(dmu_recv_cookie_t *drc)
1530 struct recvendsyncarg resa;
1531 dsl_dataset_t *ds = drc->drc_logical_ds;
1535 * XXX hack; seems the ds is still dirty and dsl_pool_zil_clean()
1536 * expects it to have a ds_user_ptr (and zil), but clone_swap()
1539 txg_wait_synced(ds->ds_dir->dd_pool, 0);
1541 if (dsl_dataset_tryown(ds, FALSE, dmu_recv_tag)) {
1542 err = dsl_dataset_clone_swap(drc->drc_real_ds, ds,
1547 mutex_exit(&ds->ds_recvlock);
1548 dsl_dataset_rele(ds, dmu_recv_tag);
1549 (void) dsl_dataset_destroy(drc->drc_real_ds, dmu_recv_tag,
1554 resa.creation_time = drc->drc_drrb->drr_creation_time;
1555 resa.toguid = drc->drc_drrb->drr_toguid;
1556 resa.tosnap = drc->drc_tosnap;
1558 err = dsl_sync_task_do(ds->ds_dir->dd_pool,
1559 recv_end_check, recv_end_sync, ds, &resa, 3);
1562 (void) dsl_dataset_clone_swap(drc->drc_real_ds, ds, B_TRUE);
1566 mutex_exit(&ds->ds_recvlock);
1567 dsl_dataset_disown(ds, dmu_recv_tag);
1568 (void) dsl_dataset_destroy(drc->drc_real_ds, dmu_recv_tag, B_FALSE);
1573 dmu_recv_new_end(dmu_recv_cookie_t *drc)
1575 struct recvendsyncarg resa;
1576 dsl_dataset_t *ds = drc->drc_logical_ds;
1580 * XXX hack; seems the ds is still dirty and dsl_pool_zil_clean()
1581 * expects it to have a ds_user_ptr (and zil), but clone_swap()
1584 txg_wait_synced(ds->ds_dir->dd_pool, 0);
1586 resa.creation_time = drc->drc_drrb->drr_creation_time;
1587 resa.toguid = drc->drc_drrb->drr_toguid;
1588 resa.tosnap = drc->drc_tosnap;
1590 err = dsl_sync_task_do(ds->ds_dir->dd_pool,
1591 recv_end_check, recv_end_sync, ds, &resa, 3);
1593 /* clean up the fs we just recv'd into */
1594 (void) dsl_dataset_destroy(ds, dmu_recv_tag, B_FALSE);
1596 /* release the hold from dmu_recv_begin */
1597 dsl_dataset_disown(ds, dmu_recv_tag);
1603 dmu_recv_end(dmu_recv_cookie_t *drc)
1605 if (drc->drc_logical_ds != drc->drc_real_ds)
1606 return (dmu_recv_existing_end(drc));
1608 return (dmu_recv_new_end(drc));