2008-11-20 20:01:55 +00:00
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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2010-05-28 20:45:14 +00:00
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* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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2011-11-17 18:14:36 +00:00
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* Copyright (c) 2011 by Delphix. All rights reserved.
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2011-10-16 06:41:05 +00:00
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* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
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2012-05-09 22:05:14 +00:00
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* Copyright (c) 2012, Joyent, Inc. All rights reserved.
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2013-03-08 18:41:28 +00:00
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* Copyright (c) 2013 by Delphix. All rights reserved.
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2011-10-16 06:41:05 +00:00
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*/
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2008-11-20 20:01:55 +00:00
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#include <sys/dmu.h>
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#include <sys/dmu_impl.h>
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#include <sys/dmu_tx.h>
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#include <sys/dbuf.h>
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#include <sys/dnode.h>
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#include <sys/zfs_context.h>
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#include <sys/dmu_objset.h>
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#include <sys/dmu_traverse.h>
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#include <sys/dsl_dataset.h>
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#include <sys/dsl_dir.h>
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2010-05-28 20:45:14 +00:00
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#include <sys/dsl_prop.h>
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2008-11-20 20:01:55 +00:00
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#include <sys/dsl_pool.h>
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#include <sys/dsl_synctask.h>
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2013-05-03 21:17:21 +00:00
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#include <sys/spa_impl.h>
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2008-11-20 20:01:55 +00:00
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#include <sys/zfs_ioctl.h>
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#include <sys/zap.h>
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#include <sys/zio_checksum.h>
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2010-05-28 20:45:14 +00:00
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#include <sys/zfs_znode.h>
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#include <zfs_fletcher.h>
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#include <sys/avl.h>
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#include <sys/ddt.h>
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2010-08-26 21:24:34 +00:00
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#include <sys/zfs_onexit.h>
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2013-09-04 12:00:57 +00:00
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#include <sys/dmu_send.h>
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#include <sys/dsl_destroy.h>
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2008-11-20 20:01:55 +00:00
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2011-11-17 18:14:36 +00:00
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/* Set this tunable to TRUE to replace corrupt data with 0x2f5baddb10c */
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int zfs_send_corrupt_data = B_FALSE;
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2008-11-20 20:01:55 +00:00
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static char *dmu_recv_tag = "dmu_recv_tag";
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2013-09-04 12:00:57 +00:00
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static const char *recv_clone_name = "%recv";
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2008-11-20 20:01:55 +00:00
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2013-05-03 21:17:21 +00:00
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typedef struct dump_bytes_io {
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dmu_sendarg_t *dbi_dsp;
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void *dbi_buf;
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int dbi_len;
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} dump_bytes_io_t;
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static void
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dump_bytes_strategy(void *arg)
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2008-11-20 20:01:55 +00:00
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{
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2013-05-03 21:17:21 +00:00
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dump_bytes_io_t *dbi = (dump_bytes_io_t *)arg;
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dmu_sendarg_t *dsp = dbi->dbi_dsp;
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2012-05-09 22:05:14 +00:00
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dsl_dataset_t *ds = dsp->dsa_os->os_dsl_dataset;
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2008-11-20 20:01:55 +00:00
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ssize_t resid; /* have to get resid to get detailed errno */
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2013-05-10 21:17:03 +00:00
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ASSERT0(dbi->dbi_len % 8);
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2008-11-20 20:01:55 +00:00
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2013-05-03 21:17:21 +00:00
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fletcher_4_incremental_native(dbi->dbi_buf, dbi->dbi_len, &dsp->dsa_zc);
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2012-05-09 22:05:14 +00:00
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dsp->dsa_err = vn_rdwr(UIO_WRITE, dsp->dsa_vp,
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2013-05-03 21:17:21 +00:00
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(caddr_t)dbi->dbi_buf, dbi->dbi_len,
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2008-11-20 20:01:55 +00:00
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0, UIO_SYSSPACE, FAPPEND, RLIM64_INFINITY, CRED(), &resid);
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2012-05-09 22:05:14 +00:00
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mutex_enter(&ds->ds_sendstream_lock);
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2013-05-03 21:17:21 +00:00
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*dsp->dsa_off += dbi->dbi_len;
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2012-05-09 22:05:14 +00:00
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mutex_exit(&ds->ds_sendstream_lock);
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2013-05-03 21:17:21 +00:00
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}
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static int
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dump_bytes(dmu_sendarg_t *dsp, void *buf, int len)
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{
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dump_bytes_io_t dbi;
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dbi.dbi_dsp = dsp;
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dbi.dbi_buf = buf;
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dbi.dbi_len = len;
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/*
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* The vn_rdwr() call is performed in a taskq to ensure that there is
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* always enough stack space to write safely to the target filesystem.
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* The ZIO_TYPE_FREE threads are used because there can be a lot of
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* them and they are used in vdev_file.c for a similar purpose.
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*/
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spa_taskq_dispatch_sync(dmu_objset_spa(dsp->dsa_os), ZIO_TYPE_FREE,
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ZIO_TASKQ_ISSUE, dump_bytes_strategy, &dbi, TQ_SLEEP);
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2012-05-09 22:05:14 +00:00
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return (dsp->dsa_err);
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2008-11-20 20:01:55 +00:00
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}
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static int
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2012-05-09 22:05:14 +00:00
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dump_free(dmu_sendarg_t *dsp, uint64_t object, uint64_t offset,
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2008-11-20 20:01:55 +00:00
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uint64_t length)
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{
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2012-05-09 22:05:14 +00:00
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struct drr_free *drrf = &(dsp->dsa_drr->drr_u.drr_free);
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2010-05-28 20:45:14 +00:00
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2012-06-22 14:17:50 +00:00
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if (length != -1ULL && offset + length < offset)
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length = -1ULL;
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2010-05-28 20:45:14 +00:00
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/*
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* If there is a pending op, but it's not PENDING_FREE, push it out,
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* since free block aggregation can only be done for blocks of the
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* same type (i.e., DRR_FREE records can only be aggregated with
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* other DRR_FREE records. DRR_FREEOBJECTS records can only be
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* aggregated with other DRR_FREEOBJECTS records.
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*/
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2012-05-09 22:05:14 +00:00
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if (dsp->dsa_pending_op != PENDING_NONE &&
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dsp->dsa_pending_op != PENDING_FREE) {
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if (dump_bytes(dsp, dsp->dsa_drr,
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sizeof (dmu_replay_record_t)) != 0)
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2013-03-08 18:41:28 +00:00
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return (SET_ERROR(EINTR));
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2012-05-09 22:05:14 +00:00
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dsp->dsa_pending_op = PENDING_NONE;
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2010-05-28 20:45:14 +00:00
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}
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2012-05-09 22:05:14 +00:00
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if (dsp->dsa_pending_op == PENDING_FREE) {
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2010-05-28 20:45:14 +00:00
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/*
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* There should never be a PENDING_FREE if length is -1
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* (because dump_dnode is the only place where this
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* function is called with a -1, and only after flushing
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* any pending record).
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*/
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ASSERT(length != -1ULL);
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/*
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* Check to see whether this free block can be aggregated
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* with pending one.
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*/
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if (drrf->drr_object == object && drrf->drr_offset +
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drrf->drr_length == offset) {
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drrf->drr_length += length;
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return (0);
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} else {
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/* not a continuation. Push out pending record */
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2012-05-09 22:05:14 +00:00
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if (dump_bytes(dsp, dsp->dsa_drr,
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2010-05-28 20:45:14 +00:00
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sizeof (dmu_replay_record_t)) != 0)
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2013-03-08 18:41:28 +00:00
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return (SET_ERROR(EINTR));
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2012-05-09 22:05:14 +00:00
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dsp->dsa_pending_op = PENDING_NONE;
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2010-05-28 20:45:14 +00:00
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}
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}
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/* create a FREE record and make it pending */
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2012-05-09 22:05:14 +00:00
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bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t));
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dsp->dsa_drr->drr_type = DRR_FREE;
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2010-05-28 20:45:14 +00:00
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drrf->drr_object = object;
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drrf->drr_offset = offset;
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drrf->drr_length = length;
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2012-05-09 22:05:14 +00:00
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drrf->drr_toguid = dsp->dsa_toguid;
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2010-05-28 20:45:14 +00:00
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if (length == -1ULL) {
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2012-05-09 22:05:14 +00:00
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if (dump_bytes(dsp, dsp->dsa_drr,
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sizeof (dmu_replay_record_t)) != 0)
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2013-03-08 18:41:28 +00:00
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return (SET_ERROR(EINTR));
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2010-05-28 20:45:14 +00:00
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} else {
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2012-05-09 22:05:14 +00:00
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dsp->dsa_pending_op = PENDING_FREE;
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2010-05-28 20:45:14 +00:00
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}
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2008-11-20 20:01:55 +00:00
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return (0);
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}
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static int
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2012-05-09 22:05:14 +00:00
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dump_data(dmu_sendarg_t *dsp, dmu_object_type_t type,
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2010-05-28 20:45:14 +00:00
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uint64_t object, uint64_t offset, int blksz, const blkptr_t *bp, void *data)
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2008-11-20 20:01:55 +00:00
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{
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2012-05-09 22:05:14 +00:00
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struct drr_write *drrw = &(dsp->dsa_drr->drr_u.drr_write);
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2010-05-28 20:45:14 +00:00
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/*
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* If there is any kind of pending aggregation (currently either
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* a grouping of free objects or free blocks), push it out to
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* the stream, since aggregation can't be done across operations
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* of different types.
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*/
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2012-05-09 22:05:14 +00:00
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if (dsp->dsa_pending_op != PENDING_NONE) {
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if (dump_bytes(dsp, dsp->dsa_drr,
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sizeof (dmu_replay_record_t)) != 0)
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2013-03-08 18:41:28 +00:00
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return (SET_ERROR(EINTR));
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2012-05-09 22:05:14 +00:00
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dsp->dsa_pending_op = PENDING_NONE;
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2010-05-28 20:45:14 +00:00
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}
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2008-11-20 20:01:55 +00:00
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/* write a DATA record */
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2012-05-09 22:05:14 +00:00
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bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t));
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dsp->dsa_drr->drr_type = DRR_WRITE;
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2010-05-28 20:45:14 +00:00
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drrw->drr_object = object;
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drrw->drr_type = type;
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drrw->drr_offset = offset;
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drrw->drr_length = blksz;
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2012-05-09 22:05:14 +00:00
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drrw->drr_toguid = dsp->dsa_toguid;
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2010-05-28 20:45:14 +00:00
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drrw->drr_checksumtype = BP_GET_CHECKSUM(bp);
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if (zio_checksum_table[drrw->drr_checksumtype].ci_dedup)
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drrw->drr_checksumflags |= DRR_CHECKSUM_DEDUP;
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DDK_SET_LSIZE(&drrw->drr_key, BP_GET_LSIZE(bp));
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DDK_SET_PSIZE(&drrw->drr_key, BP_GET_PSIZE(bp));
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DDK_SET_COMPRESS(&drrw->drr_key, BP_GET_COMPRESS(bp));
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drrw->drr_key.ddk_cksum = bp->blk_cksum;
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2012-05-09 22:05:14 +00:00
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if (dump_bytes(dsp, dsp->dsa_drr, sizeof (dmu_replay_record_t)) != 0)
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2013-03-08 18:41:28 +00:00
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return (SET_ERROR(EINTR));
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2012-05-09 22:05:14 +00:00
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if (dump_bytes(dsp, data, blksz) != 0)
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2013-03-08 18:41:28 +00:00
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return (SET_ERROR(EINTR));
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2010-05-28 20:45:14 +00:00
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return (0);
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}
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static int
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2012-05-09 22:05:14 +00:00
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dump_spill(dmu_sendarg_t *dsp, uint64_t object, int blksz, void *data)
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2010-05-28 20:45:14 +00:00
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{
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2012-05-09 22:05:14 +00:00
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struct drr_spill *drrs = &(dsp->dsa_drr->drr_u.drr_spill);
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2010-05-28 20:45:14 +00:00
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2012-05-09 22:05:14 +00:00
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if (dsp->dsa_pending_op != PENDING_NONE) {
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if (dump_bytes(dsp, dsp->dsa_drr,
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sizeof (dmu_replay_record_t)) != 0)
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2013-03-08 18:41:28 +00:00
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return (SET_ERROR(EINTR));
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2012-05-09 22:05:14 +00:00
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dsp->dsa_pending_op = PENDING_NONE;
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2010-05-28 20:45:14 +00:00
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}
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/* write a SPILL record */
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2012-05-09 22:05:14 +00:00
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bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t));
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dsp->dsa_drr->drr_type = DRR_SPILL;
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2010-05-28 20:45:14 +00:00
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drrs->drr_object = object;
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drrs->drr_length = blksz;
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2012-05-09 22:05:14 +00:00
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drrs->drr_toguid = dsp->dsa_toguid;
|
2008-11-20 20:01:55 +00:00
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2012-05-09 22:05:14 +00:00
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if (dump_bytes(dsp, dsp->dsa_drr, sizeof (dmu_replay_record_t)))
|
2013-03-08 18:41:28 +00:00
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return (SET_ERROR(EINTR));
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2012-05-09 22:05:14 +00:00
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if (dump_bytes(dsp, data, blksz))
|
2013-03-08 18:41:28 +00:00
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return (SET_ERROR(EINTR));
|
2008-11-20 20:01:55 +00:00
|
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return (0);
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}
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static int
|
2012-05-09 22:05:14 +00:00
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dump_freeobjects(dmu_sendarg_t *dsp, uint64_t firstobj, uint64_t numobjs)
|
2008-11-20 20:01:55 +00:00
|
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{
|
2012-05-09 22:05:14 +00:00
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struct drr_freeobjects *drrfo = &(dsp->dsa_drr->drr_u.drr_freeobjects);
|
2010-05-28 20:45:14 +00:00
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/*
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|
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* If there is a pending op, but it's not PENDING_FREEOBJECTS,
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* push it out, since free block aggregation can only be done for
|
|
|
|
* blocks of the same type (i.e., DRR_FREE records can only be
|
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|
|
* aggregated with other DRR_FREE records. DRR_FREEOBJECTS records
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|
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|
* can only be aggregated with other DRR_FREEOBJECTS records.
|
|
|
|
*/
|
2012-05-09 22:05:14 +00:00
|
|
|
if (dsp->dsa_pending_op != PENDING_NONE &&
|
|
|
|
dsp->dsa_pending_op != PENDING_FREEOBJECTS) {
|
|
|
|
if (dump_bytes(dsp, dsp->dsa_drr,
|
|
|
|
sizeof (dmu_replay_record_t)) != 0)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINTR));
|
2012-05-09 22:05:14 +00:00
|
|
|
dsp->dsa_pending_op = PENDING_NONE;
|
2010-05-28 20:45:14 +00:00
|
|
|
}
|
2012-05-09 22:05:14 +00:00
|
|
|
if (dsp->dsa_pending_op == PENDING_FREEOBJECTS) {
|
2010-05-28 20:45:14 +00:00
|
|
|
/*
|
|
|
|
* See whether this free object array can be aggregated
|
|
|
|
* with pending one
|
|
|
|
*/
|
|
|
|
if (drrfo->drr_firstobj + drrfo->drr_numobjs == firstobj) {
|
|
|
|
drrfo->drr_numobjs += numobjs;
|
|
|
|
return (0);
|
|
|
|
} else {
|
|
|
|
/* can't be aggregated. Push out pending record */
|
2012-05-09 22:05:14 +00:00
|
|
|
if (dump_bytes(dsp, dsp->dsa_drr,
|
2010-05-28 20:45:14 +00:00
|
|
|
sizeof (dmu_replay_record_t)) != 0)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINTR));
|
2012-05-09 22:05:14 +00:00
|
|
|
dsp->dsa_pending_op = PENDING_NONE;
|
2010-05-28 20:45:14 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
/* write a FREEOBJECTS record */
|
2012-05-09 22:05:14 +00:00
|
|
|
bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t));
|
|
|
|
dsp->dsa_drr->drr_type = DRR_FREEOBJECTS;
|
2010-05-28 20:45:14 +00:00
|
|
|
drrfo->drr_firstobj = firstobj;
|
|
|
|
drrfo->drr_numobjs = numobjs;
|
2012-05-09 22:05:14 +00:00
|
|
|
drrfo->drr_toguid = dsp->dsa_toguid;
|
2010-05-28 20:45:14 +00:00
|
|
|
|
2012-05-09 22:05:14 +00:00
|
|
|
dsp->dsa_pending_op = PENDING_FREEOBJECTS;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
2012-05-09 22:05:14 +00:00
|
|
|
dump_dnode(dmu_sendarg_t *dsp, uint64_t object, dnode_phys_t *dnp)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2012-05-09 22:05:14 +00:00
|
|
|
struct drr_object *drro = &(dsp->dsa_drr->drr_u.drr_object);
|
2010-05-28 20:45:14 +00:00
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
if (dnp == NULL || dnp->dn_type == DMU_OT_NONE)
|
2012-05-09 22:05:14 +00:00
|
|
|
return (dump_freeobjects(dsp, object, 1));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2012-05-09 22:05:14 +00:00
|
|
|
if (dsp->dsa_pending_op != PENDING_NONE) {
|
|
|
|
if (dump_bytes(dsp, dsp->dsa_drr,
|
|
|
|
sizeof (dmu_replay_record_t)) != 0)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINTR));
|
2012-05-09 22:05:14 +00:00
|
|
|
dsp->dsa_pending_op = PENDING_NONE;
|
2010-05-28 20:45:14 +00:00
|
|
|
}
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
/* write an OBJECT record */
|
2012-05-09 22:05:14 +00:00
|
|
|
bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t));
|
|
|
|
dsp->dsa_drr->drr_type = DRR_OBJECT;
|
2010-05-28 20:45:14 +00:00
|
|
|
drro->drr_object = object;
|
|
|
|
drro->drr_type = dnp->dn_type;
|
|
|
|
drro->drr_bonustype = dnp->dn_bonustype;
|
|
|
|
drro->drr_blksz = dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT;
|
|
|
|
drro->drr_bonuslen = dnp->dn_bonuslen;
|
|
|
|
drro->drr_checksumtype = dnp->dn_checksum;
|
|
|
|
drro->drr_compress = dnp->dn_compress;
|
2012-05-09 22:05:14 +00:00
|
|
|
drro->drr_toguid = dsp->dsa_toguid;
|
2010-05-28 20:45:14 +00:00
|
|
|
|
2012-05-09 22:05:14 +00:00
|
|
|
if (dump_bytes(dsp, dsp->dsa_drr, sizeof (dmu_replay_record_t)) != 0)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINTR));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2012-05-09 22:05:14 +00:00
|
|
|
if (dump_bytes(dsp, DN_BONUS(dnp), P2ROUNDUP(dnp->dn_bonuslen, 8)) != 0)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINTR));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
/* free anything past the end of the file */
|
2012-05-09 22:05:14 +00:00
|
|
|
if (dump_free(dsp, object, (dnp->dn_maxblkid + 1) *
|
2008-11-20 20:01:55 +00:00
|
|
|
(dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT), -1ULL))
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINTR));
|
2013-09-04 12:00:57 +00:00
|
|
|
if (dsp->dsa_err != 0)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINTR));
|
2008-11-20 20:01:55 +00:00
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
#define BP_SPAN(dnp, level) \
|
|
|
|
(((uint64_t)dnp->dn_datablkszsec) << (SPA_MINBLOCKSHIFT + \
|
|
|
|
(level) * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT)))
|
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
/* ARGSUSED */
|
2008-11-20 20:01:55 +00:00
|
|
|
static int
|
2013-07-02 20:26:24 +00:00
|
|
|
backup_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
|
2010-05-28 20:45:14 +00:00
|
|
|
const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2012-05-09 22:05:14 +00:00
|
|
|
dmu_sendarg_t *dsp = arg;
|
2008-11-20 20:01:55 +00:00
|
|
|
dmu_object_type_t type = bp ? BP_GET_TYPE(bp) : DMU_OT_NONE;
|
|
|
|
int err = 0;
|
|
|
|
|
|
|
|
if (issig(JUSTLOOKING) && issig(FORREAL))
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINTR));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
if (zb->zb_object != DMU_META_DNODE_OBJECT &&
|
|
|
|
DMU_OBJECT_IS_SPECIAL(zb->zb_object)) {
|
2009-07-02 22:44:48 +00:00
|
|
|
return (0);
|
2010-05-28 20:45:14 +00:00
|
|
|
} else if (bp == NULL && zb->zb_object == DMU_META_DNODE_OBJECT) {
|
2008-12-03 20:09:06 +00:00
|
|
|
uint64_t span = BP_SPAN(dnp, zb->zb_level);
|
|
|
|
uint64_t dnobj = (zb->zb_blkid * span) >> DNODE_SHIFT;
|
2012-05-09 22:05:14 +00:00
|
|
|
err = dump_freeobjects(dsp, dnobj, span >> DNODE_SHIFT);
|
2008-11-20 20:01:55 +00:00
|
|
|
} else if (bp == NULL) {
|
2008-12-03 20:09:06 +00:00
|
|
|
uint64_t span = BP_SPAN(dnp, zb->zb_level);
|
2012-05-09 22:05:14 +00:00
|
|
|
err = dump_free(dsp, zb->zb_object, zb->zb_blkid * span, span);
|
2008-12-03 20:09:06 +00:00
|
|
|
} else if (zb->zb_level > 0 || type == DMU_OT_OBJSET) {
|
|
|
|
return (0);
|
|
|
|
} else if (type == DMU_OT_DNODE) {
|
|
|
|
dnode_phys_t *blk;
|
2008-11-20 20:01:55 +00:00
|
|
|
int i;
|
|
|
|
int blksz = BP_GET_LSIZE(bp);
|
2008-12-03 20:09:06 +00:00
|
|
|
uint32_t aflags = ARC_WAIT;
|
|
|
|
arc_buf_t *abuf;
|
|
|
|
|
2013-07-02 20:26:24 +00:00
|
|
|
if (arc_read(NULL, spa, bp, arc_getbuf_func, &abuf,
|
|
|
|
ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL,
|
|
|
|
&aflags, zb) != 0)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EIO));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2008-12-03 20:09:06 +00:00
|
|
|
blk = abuf->b_data;
|
2008-11-20 20:01:55 +00:00
|
|
|
for (i = 0; i < blksz >> DNODE_SHIFT; i++) {
|
2008-12-03 20:09:06 +00:00
|
|
|
uint64_t dnobj = (zb->zb_blkid <<
|
|
|
|
(DNODE_BLOCK_SHIFT - DNODE_SHIFT)) + i;
|
2012-05-09 22:05:14 +00:00
|
|
|
err = dump_dnode(dsp, dnobj, blk+i);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err != 0)
|
2008-11-20 20:01:55 +00:00
|
|
|
break;
|
|
|
|
}
|
2008-12-03 20:09:06 +00:00
|
|
|
(void) arc_buf_remove_ref(abuf, &abuf);
|
2010-05-28 20:45:14 +00:00
|
|
|
} else if (type == DMU_OT_SA) {
|
2008-12-03 20:09:06 +00:00
|
|
|
uint32_t aflags = ARC_WAIT;
|
|
|
|
arc_buf_t *abuf;
|
2008-11-20 20:01:55 +00:00
|
|
|
int blksz = BP_GET_LSIZE(bp);
|
2008-12-03 20:09:06 +00:00
|
|
|
|
2013-07-02 20:26:24 +00:00
|
|
|
if (arc_read(NULL, spa, bp, arc_getbuf_func, &abuf,
|
|
|
|
ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL,
|
|
|
|
&aflags, zb) != 0)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EIO));
|
2008-12-03 20:09:06 +00:00
|
|
|
|
2012-05-09 22:05:14 +00:00
|
|
|
err = dump_spill(dsp, zb->zb_object, blksz, abuf->b_data);
|
2010-05-28 20:45:14 +00:00
|
|
|
(void) arc_buf_remove_ref(abuf, &abuf);
|
|
|
|
} else { /* it's a level-0 block of a regular object */
|
|
|
|
uint32_t aflags = ARC_WAIT;
|
|
|
|
arc_buf_t *abuf;
|
|
|
|
int blksz = BP_GET_LSIZE(bp);
|
|
|
|
|
2013-07-02 20:26:24 +00:00
|
|
|
if (arc_read(NULL, spa, bp, arc_getbuf_func, &abuf,
|
|
|
|
ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL,
|
|
|
|
&aflags, zb) != 0) {
|
2011-11-17 18:14:36 +00:00
|
|
|
if (zfs_send_corrupt_data) {
|
|
|
|
uint64_t *ptr;
|
|
|
|
/* Send a block filled with 0x"zfs badd bloc" */
|
|
|
|
abuf = arc_buf_alloc(spa, blksz, &abuf,
|
|
|
|
ARC_BUFC_DATA);
|
|
|
|
for (ptr = abuf->b_data;
|
|
|
|
(char *)ptr < (char *)abuf->b_data + blksz;
|
|
|
|
ptr++)
|
2013-02-05 00:35:54 +00:00
|
|
|
*ptr = 0x2f5baddb10cULL;
|
2011-11-17 18:14:36 +00:00
|
|
|
} else {
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EIO));
|
2011-11-17 18:14:36 +00:00
|
|
|
}
|
|
|
|
}
|
2010-05-28 20:45:14 +00:00
|
|
|
|
2012-05-09 22:05:14 +00:00
|
|
|
err = dump_data(dsp, type, zb->zb_object, zb->zb_blkid * blksz,
|
2010-05-28 20:45:14 +00:00
|
|
|
blksz, bp, abuf->b_data);
|
2008-12-03 20:09:06 +00:00
|
|
|
(void) arc_buf_remove_ref(abuf, &abuf);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
ASSERT(err == 0 || err == EINTR);
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
2013-08-28 11:45:09 +00:00
|
|
|
/*
|
2013-09-04 12:00:57 +00:00
|
|
|
* Releases dp, ds, and fromds, using the specified tag.
|
2013-08-28 11:45:09 +00:00
|
|
|
*/
|
2013-09-04 12:00:57 +00:00
|
|
|
static int
|
|
|
|
dmu_send_impl(void *tag, dsl_pool_t *dp, dsl_dataset_t *ds,
|
|
|
|
dsl_dataset_t *fromds, int outfd, vnode_t *vp, offset_t *off)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
objset_t *os;
|
2008-11-20 20:01:55 +00:00
|
|
|
dmu_replay_record_t *drr;
|
2012-05-09 22:05:14 +00:00
|
|
|
dmu_sendarg_t *dsp;
|
2008-11-20 20:01:55 +00:00
|
|
|
int err;
|
|
|
|
uint64_t fromtxg = 0;
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
if (fromds != NULL && !dsl_dataset_is_before(ds, fromds)) {
|
|
|
|
dsl_dataset_rele(fromds, tag);
|
|
|
|
dsl_dataset_rele(ds, tag);
|
|
|
|
dsl_pool_rele(dp, tag);
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EXDEV));
|
2013-09-04 12:00:57 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
err = dmu_objset_from_ds(ds, &os);
|
|
|
|
if (err != 0) {
|
|
|
|
if (fromds != NULL)
|
|
|
|
dsl_dataset_rele(fromds, tag);
|
|
|
|
dsl_dataset_rele(ds, tag);
|
|
|
|
dsl_pool_rele(dp, tag);
|
|
|
|
return (err);
|
|
|
|
}
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
drr = kmem_zalloc(sizeof (dmu_replay_record_t), KM_SLEEP);
|
|
|
|
drr->drr_type = DRR_BEGIN;
|
|
|
|
drr->drr_u.drr_begin.drr_magic = DMU_BACKUP_MAGIC;
|
2010-05-28 20:45:14 +00:00
|
|
|
DMU_SET_STREAM_HDRTYPE(drr->drr_u.drr_begin.drr_versioninfo,
|
|
|
|
DMU_SUBSTREAM);
|
|
|
|
|
|
|
|
#ifdef _KERNEL
|
2013-09-04 12:00:57 +00:00
|
|
|
if (dmu_objset_type(os) == DMU_OST_ZFS) {
|
2010-05-28 20:45:14 +00:00
|
|
|
uint64_t version;
|
2013-09-04 12:00:57 +00:00
|
|
|
if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &version) != 0) {
|
2012-05-09 22:05:14 +00:00
|
|
|
kmem_free(drr, sizeof (dmu_replay_record_t));
|
2013-09-04 12:00:57 +00:00
|
|
|
if (fromds != NULL)
|
|
|
|
dsl_dataset_rele(fromds, tag);
|
|
|
|
dsl_dataset_rele(ds, tag);
|
|
|
|
dsl_pool_rele(dp, tag);
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2012-05-09 22:05:14 +00:00
|
|
|
}
|
2013-09-04 12:00:57 +00:00
|
|
|
if (version >= ZPL_VERSION_SA) {
|
2010-05-28 20:45:14 +00:00
|
|
|
DMU_SET_FEATUREFLAGS(
|
|
|
|
drr->drr_u.drr_begin.drr_versioninfo,
|
|
|
|
DMU_BACKUP_FEATURE_SA_SPILL);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
drr->drr_u.drr_begin.drr_creation_time =
|
|
|
|
ds->ds_phys->ds_creation_time;
|
2013-09-04 12:00:57 +00:00
|
|
|
drr->drr_u.drr_begin.drr_type = dmu_objset_type(os);
|
2013-08-28 11:45:09 +00:00
|
|
|
if (fromds != NULL && ds->ds_dir != fromds->ds_dir)
|
2008-11-20 20:01:55 +00:00
|
|
|
drr->drr_u.drr_begin.drr_flags |= DRR_FLAG_CLONE;
|
|
|
|
drr->drr_u.drr_begin.drr_toguid = ds->ds_phys->ds_guid;
|
|
|
|
if (ds->ds_phys->ds_flags & DS_FLAG_CI_DATASET)
|
|
|
|
drr->drr_u.drr_begin.drr_flags |= DRR_FLAG_CI_DATA;
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
if (fromds != NULL)
|
2008-11-20 20:01:55 +00:00
|
|
|
drr->drr_u.drr_begin.drr_fromguid = fromds->ds_phys->ds_guid;
|
|
|
|
dsl_dataset_name(ds, drr->drr_u.drr_begin.drr_toname);
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
if (fromds != NULL) {
|
2008-11-20 20:01:55 +00:00
|
|
|
fromtxg = fromds->ds_phys->ds_creation_txg;
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dataset_rele(fromds, tag);
|
|
|
|
fromds = NULL;
|
|
|
|
}
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2012-05-09 22:05:14 +00:00
|
|
|
dsp = kmem_zalloc(sizeof (dmu_sendarg_t), KM_SLEEP);
|
|
|
|
|
|
|
|
dsp->dsa_drr = drr;
|
|
|
|
dsp->dsa_vp = vp;
|
|
|
|
dsp->dsa_outfd = outfd;
|
|
|
|
dsp->dsa_proc = curproc;
|
2013-09-04 12:00:57 +00:00
|
|
|
dsp->dsa_os = os;
|
2012-05-09 22:05:14 +00:00
|
|
|
dsp->dsa_off = off;
|
|
|
|
dsp->dsa_toguid = ds->ds_phys->ds_guid;
|
|
|
|
ZIO_SET_CHECKSUM(&dsp->dsa_zc, 0, 0, 0, 0);
|
|
|
|
dsp->dsa_pending_op = PENDING_NONE;
|
|
|
|
|
|
|
|
mutex_enter(&ds->ds_sendstream_lock);
|
|
|
|
list_insert_head(&ds->ds_sendstreams, dsp);
|
|
|
|
mutex_exit(&ds->ds_sendstream_lock);
|
|
|
|
|
2013-04-10 21:54:56 +00:00
|
|
|
dsl_dataset_long_hold(ds, FTAG);
|
|
|
|
dsl_pool_rele(dp, tag);
|
|
|
|
|
2012-05-09 22:05:14 +00:00
|
|
|
if (dump_bytes(dsp, drr, sizeof (dmu_replay_record_t)) != 0) {
|
|
|
|
err = dsp->dsa_err;
|
|
|
|
goto out;
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
2008-12-03 20:09:06 +00:00
|
|
|
err = traverse_dataset(ds, fromtxg, TRAVERSE_PRE | TRAVERSE_PREFETCH,
|
2012-05-09 22:05:14 +00:00
|
|
|
backup_cb, dsp);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2012-05-09 22:05:14 +00:00
|
|
|
if (dsp->dsa_pending_op != PENDING_NONE)
|
|
|
|
if (dump_bytes(dsp, drr, sizeof (dmu_replay_record_t)) != 0)
|
2013-03-08 18:41:28 +00:00
|
|
|
err = SET_ERROR(EINTR);
|
2010-05-28 20:45:14 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err != 0) {
|
|
|
|
if (err == EINTR && dsp->dsa_err != 0)
|
2012-05-09 22:05:14 +00:00
|
|
|
err = dsp->dsa_err;
|
|
|
|
goto out;
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
bzero(drr, sizeof (dmu_replay_record_t));
|
|
|
|
drr->drr_type = DRR_END;
|
2012-05-09 22:05:14 +00:00
|
|
|
drr->drr_u.drr_end.drr_checksum = dsp->dsa_zc;
|
|
|
|
drr->drr_u.drr_end.drr_toguid = dsp->dsa_toguid;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2012-05-09 22:05:14 +00:00
|
|
|
if (dump_bytes(dsp, drr, sizeof (dmu_replay_record_t)) != 0) {
|
|
|
|
err = dsp->dsa_err;
|
|
|
|
goto out;
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
2012-05-09 22:05:14 +00:00
|
|
|
out:
|
|
|
|
mutex_enter(&ds->ds_sendstream_lock);
|
|
|
|
list_remove(&ds->ds_sendstreams, dsp);
|
|
|
|
mutex_exit(&ds->ds_sendstream_lock);
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
kmem_free(drr, sizeof (dmu_replay_record_t));
|
2012-05-09 22:05:14 +00:00
|
|
|
kmem_free(dsp, sizeof (dmu_sendarg_t));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dataset_long_rele(ds, FTAG);
|
|
|
|
dsl_dataset_rele(ds, tag);
|
|
|
|
|
2012-05-09 22:05:14 +00:00
|
|
|
return (err);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
2011-11-17 18:14:36 +00:00
|
|
|
int
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_send_obj(const char *pool, uint64_t tosnap, uint64_t fromsnap,
|
|
|
|
int outfd, vnode_t *vp, offset_t *off)
|
|
|
|
{
|
|
|
|
dsl_pool_t *dp;
|
|
|
|
dsl_dataset_t *ds;
|
|
|
|
dsl_dataset_t *fromds = NULL;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
err = dsl_pool_hold(pool, FTAG, &dp);
|
|
|
|
if (err != 0)
|
|
|
|
return (err);
|
|
|
|
|
|
|
|
err = dsl_dataset_hold_obj(dp, tosnap, FTAG, &ds);
|
|
|
|
if (err != 0) {
|
|
|
|
dsl_pool_rele(dp, FTAG);
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (fromsnap != 0) {
|
|
|
|
err = dsl_dataset_hold_obj(dp, fromsnap, FTAG, &fromds);
|
|
|
|
if (err != 0) {
|
|
|
|
dsl_dataset_rele(ds, FTAG);
|
|
|
|
dsl_pool_rele(dp, FTAG);
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return (dmu_send_impl(FTAG, dp, ds, fromds, outfd, vp, off));
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
dmu_send(const char *tosnap, const char *fromsnap,
|
|
|
|
int outfd, vnode_t *vp, offset_t *off)
|
|
|
|
{
|
|
|
|
dsl_pool_t *dp;
|
|
|
|
dsl_dataset_t *ds;
|
|
|
|
dsl_dataset_t *fromds = NULL;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (strchr(tosnap, '@') == NULL)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2013-09-04 12:00:57 +00:00
|
|
|
if (fromsnap != NULL && strchr(fromsnap, '@') == NULL)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2013-09-04 12:00:57 +00:00
|
|
|
|
|
|
|
err = dsl_pool_hold(tosnap, FTAG, &dp);
|
|
|
|
if (err != 0)
|
|
|
|
return (err);
|
|
|
|
|
|
|
|
err = dsl_dataset_hold(dp, tosnap, FTAG, &ds);
|
|
|
|
if (err != 0) {
|
|
|
|
dsl_pool_rele(dp, FTAG);
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (fromsnap != NULL) {
|
|
|
|
err = dsl_dataset_hold(dp, fromsnap, FTAG, &fromds);
|
|
|
|
if (err != 0) {
|
|
|
|
dsl_dataset_rele(ds, FTAG);
|
|
|
|
dsl_pool_rele(dp, FTAG);
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return (dmu_send_impl(FTAG, dp, ds, fromds, outfd, vp, off));
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
dmu_send_estimate(dsl_dataset_t *ds, dsl_dataset_t *fromds, uint64_t *sizep)
|
2011-11-17 18:14:36 +00:00
|
|
|
{
|
|
|
|
int err;
|
|
|
|
uint64_t size, recordsize;
|
2013-09-04 12:00:57 +00:00
|
|
|
ASSERTV(dsl_pool_t *dp = ds->ds_dir->dd_pool);
|
|
|
|
|
|
|
|
ASSERT(dsl_pool_config_held(dp));
|
2011-11-17 18:14:36 +00:00
|
|
|
|
|
|
|
/* tosnap must be a snapshot */
|
2013-09-04 12:00:57 +00:00
|
|
|
if (!dsl_dataset_is_snapshot(ds))
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2011-11-17 18:14:36 +00:00
|
|
|
|
2013-08-28 11:45:09 +00:00
|
|
|
/*
|
|
|
|
* fromsnap must be an earlier snapshot from the same fs as tosnap,
|
|
|
|
* or the origin's fs.
|
|
|
|
*/
|
2013-09-04 12:00:57 +00:00
|
|
|
if (fromds != NULL && !dsl_dataset_is_before(ds, fromds))
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EXDEV));
|
2011-11-17 18:14:36 +00:00
|
|
|
|
|
|
|
/* Get uncompressed size estimate of changed data. */
|
|
|
|
if (fromds == NULL) {
|
|
|
|
size = ds->ds_phys->ds_uncompressed_bytes;
|
|
|
|
} else {
|
|
|
|
uint64_t used, comp;
|
|
|
|
err = dsl_dataset_space_written(fromds, ds,
|
|
|
|
&used, &comp, &size);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err != 0)
|
2011-11-17 18:14:36 +00:00
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Assume that space (both on-disk and in-stream) is dominated by
|
|
|
|
* data. We will adjust for indirect blocks and the copies property,
|
|
|
|
* but ignore per-object space used (eg, dnodes and DRR_OBJECT records).
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Subtract out approximate space used by indirect blocks.
|
|
|
|
* Assume most space is used by data blocks (non-indirect, non-dnode).
|
|
|
|
* Assume all blocks are recordsize. Assume ditto blocks and
|
|
|
|
* internal fragmentation counter out compression.
|
|
|
|
*
|
|
|
|
* Therefore, space used by indirect blocks is sizeof(blkptr_t) per
|
|
|
|
* block, which we observe in practice.
|
|
|
|
*/
|
2013-09-04 12:00:57 +00:00
|
|
|
err = dsl_prop_get_int_ds(ds, "recordsize", &recordsize);
|
|
|
|
if (err != 0)
|
2011-11-17 18:14:36 +00:00
|
|
|
return (err);
|
|
|
|
size -= size / recordsize * sizeof (blkptr_t);
|
|
|
|
|
|
|
|
/* Add in the space for the record associated with each block. */
|
|
|
|
size += size / recordsize * sizeof (dmu_replay_record_t);
|
|
|
|
|
|
|
|
*sizep = size;
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
typedef struct dmu_recv_begin_arg {
|
|
|
|
const char *drba_origin;
|
|
|
|
dmu_recv_cookie_t *drba_cookie;
|
|
|
|
cred_t *drba_cred;
|
|
|
|
} dmu_recv_begin_arg_t;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
static int
|
2013-09-04 12:00:57 +00:00
|
|
|
recv_begin_check_existing_impl(dmu_recv_begin_arg_t *drba, dsl_dataset_t *ds,
|
|
|
|
uint64_t fromguid)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
|
|
|
uint64_t val;
|
2013-09-04 12:00:57 +00:00
|
|
|
int error;
|
|
|
|
dsl_pool_t *dp = ds->ds_dir->dd_pool;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
/* must not have any changes since most recent snapshot */
|
2013-09-04 12:00:57 +00:00
|
|
|
if (!drba->drba_cookie->drc_force &&
|
|
|
|
dsl_dataset_modified_since_lastsnap(ds))
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(ETXTBSY));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
/* temporary clone name must not exist */
|
|
|
|
error = zap_lookup(dp->dp_meta_objset,
|
|
|
|
ds->ds_dir->dd_phys->dd_child_dir_zapobj, recv_clone_name,
|
|
|
|
8, 1, &val);
|
|
|
|
if (error != ENOENT)
|
|
|
|
return (error == 0 ? EBUSY : error);
|
|
|
|
|
2010-08-26 21:24:34 +00:00
|
|
|
/* new snapshot name must not exist */
|
2013-09-04 12:00:57 +00:00
|
|
|
error = zap_lookup(dp->dp_meta_objset,
|
|
|
|
ds->ds_phys->ds_snapnames_zapobj, drba->drba_cookie->drc_tosnap,
|
|
|
|
8, 1, &val);
|
|
|
|
if (error != ENOENT)
|
|
|
|
return (error == 0 ? EEXIST : error);
|
2010-08-26 21:24:34 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
if (fromguid != 0) {
|
2010-05-28 20:45:14 +00:00
|
|
|
/* if incremental, most recent snapshot must match fromguid */
|
|
|
|
if (ds->ds_prev == NULL)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(ENODEV));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
/*
|
|
|
|
* most recent snapshot must match fromguid, or there are no
|
|
|
|
* changes since the fromguid one
|
|
|
|
*/
|
2013-09-04 12:00:57 +00:00
|
|
|
if (ds->ds_prev->ds_phys->ds_guid != fromguid) {
|
2010-05-28 20:45:14 +00:00
|
|
|
uint64_t birth = ds->ds_prev->ds_phys->ds_bp.blk_birth;
|
|
|
|
uint64_t obj = ds->ds_prev->ds_phys->ds_prev_snap_obj;
|
|
|
|
while (obj != 0) {
|
|
|
|
dsl_dataset_t *snap;
|
2013-09-04 12:00:57 +00:00
|
|
|
error = dsl_dataset_hold_obj(dp, obj, FTAG,
|
|
|
|
&snap);
|
|
|
|
if (error != 0)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(ENODEV));
|
2010-05-28 20:45:14 +00:00
|
|
|
if (snap->ds_phys->ds_creation_txg < birth) {
|
|
|
|
dsl_dataset_rele(snap, FTAG);
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(ENODEV));
|
2010-05-28 20:45:14 +00:00
|
|
|
}
|
2013-09-04 12:00:57 +00:00
|
|
|
if (snap->ds_phys->ds_guid == fromguid) {
|
2010-05-28 20:45:14 +00:00
|
|
|
dsl_dataset_rele(snap, FTAG);
|
|
|
|
break; /* it's ok */
|
|
|
|
}
|
|
|
|
obj = snap->ds_phys->ds_prev_snap_obj;
|
|
|
|
dsl_dataset_rele(snap, FTAG);
|
|
|
|
}
|
|
|
|
if (obj == 0)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(ENODEV));
|
2010-05-28 20:45:14 +00:00
|
|
|
}
|
|
|
|
} else {
|
|
|
|
/* if full, most recent snapshot must be $ORIGIN */
|
|
|
|
if (ds->ds_phys->ds_prev_snap_txg >= TXG_INITIAL)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(ENODEV));
|
2010-05-28 20:45:14 +00:00
|
|
|
}
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
return (0);
|
2013-09-04 12:00:57 +00:00
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dmu_recv_begin_check(void *arg, dmu_tx_t *tx)
|
|
|
|
{
|
|
|
|
dmu_recv_begin_arg_t *drba = arg;
|
|
|
|
dsl_pool_t *dp = dmu_tx_pool(tx);
|
|
|
|
struct drr_begin *drrb = drba->drba_cookie->drc_drrb;
|
|
|
|
uint64_t fromguid = drrb->drr_fromguid;
|
|
|
|
int flags = drrb->drr_flags;
|
|
|
|
int error;
|
|
|
|
dsl_dataset_t *ds;
|
|
|
|
const char *tofs = drba->drba_cookie->drc_tofs;
|
|
|
|
|
|
|
|
/* already checked */
|
|
|
|
ASSERT3U(drrb->drr_magic, ==, DMU_BACKUP_MAGIC);
|
|
|
|
|
|
|
|
if (DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) ==
|
|
|
|
DMU_COMPOUNDSTREAM ||
|
|
|
|
drrb->drr_type >= DMU_OST_NUMTYPES ||
|
|
|
|
((flags & DRR_FLAG_CLONE) && drba->drba_origin == NULL))
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2013-09-04 12:00:57 +00:00
|
|
|
|
|
|
|
/* Verify pool version supports SA if SA_SPILL feature set */
|
|
|
|
if ((DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo) &
|
|
|
|
DMU_BACKUP_FEATURE_SA_SPILL) &&
|
|
|
|
spa_version(dp->dp_spa) < SPA_VERSION_SA) {
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(ENOTSUP));
|
2013-09-04 12:00:57 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
error = dsl_dataset_hold(dp, tofs, FTAG, &ds);
|
|
|
|
if (error == 0) {
|
|
|
|
/* target fs already exists; recv into temp clone */
|
|
|
|
|
|
|
|
/* Can't recv a clone into an existing fs */
|
|
|
|
if (flags & DRR_FLAG_CLONE) {
|
|
|
|
dsl_dataset_rele(ds, FTAG);
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2013-09-04 12:00:57 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
error = recv_begin_check_existing_impl(drba, ds, fromguid);
|
|
|
|
dsl_dataset_rele(ds, FTAG);
|
|
|
|
} else if (error == ENOENT) {
|
|
|
|
/* target fs does not exist; must be a full backup or clone */
|
|
|
|
char buf[MAXNAMELEN];
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If it's a non-clone incremental, we are missing the
|
|
|
|
* target fs, so fail the recv.
|
|
|
|
*/
|
|
|
|
if (fromguid != 0 && !(flags & DRR_FLAG_CLONE))
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(ENOENT));
|
2013-09-04 12:00:57 +00:00
|
|
|
|
|
|
|
/* Open the parent of tofs */
|
|
|
|
ASSERT3U(strlen(tofs), <, MAXNAMELEN);
|
|
|
|
(void) strlcpy(buf, tofs, strrchr(tofs, '/') - tofs + 1);
|
|
|
|
error = dsl_dataset_hold(dp, buf, FTAG, &ds);
|
|
|
|
if (error != 0)
|
|
|
|
return (error);
|
|
|
|
|
|
|
|
if (drba->drba_origin != NULL) {
|
|
|
|
dsl_dataset_t *origin;
|
|
|
|
error = dsl_dataset_hold(dp, drba->drba_origin,
|
|
|
|
FTAG, &origin);
|
|
|
|
if (error != 0) {
|
|
|
|
dsl_dataset_rele(ds, FTAG);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
if (!dsl_dataset_is_snapshot(origin)) {
|
|
|
|
dsl_dataset_rele(origin, FTAG);
|
|
|
|
dsl_dataset_rele(ds, FTAG);
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2013-09-04 12:00:57 +00:00
|
|
|
}
|
|
|
|
if (origin->ds_phys->ds_guid != fromguid) {
|
|
|
|
dsl_dataset_rele(origin, FTAG);
|
|
|
|
dsl_dataset_rele(ds, FTAG);
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(ENODEV));
|
2013-09-04 12:00:57 +00:00
|
|
|
}
|
|
|
|
dsl_dataset_rele(origin, FTAG);
|
|
|
|
}
|
|
|
|
dsl_dataset_rele(ds, FTAG);
|
|
|
|
error = 0;
|
|
|
|
}
|
|
|
|
return (error);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_recv_begin_sync(void *arg, dmu_tx_t *tx)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_recv_begin_arg_t *drba = arg;
|
|
|
|
dsl_pool_t *dp = dmu_tx_pool(tx);
|
|
|
|
struct drr_begin *drrb = drba->drba_cookie->drc_drrb;
|
|
|
|
const char *tofs = drba->drba_cookie->drc_tofs;
|
|
|
|
dsl_dataset_t *ds, *newds;
|
2008-11-20 20:01:55 +00:00
|
|
|
uint64_t dsobj;
|
2013-09-04 12:00:57 +00:00
|
|
|
int error;
|
|
|
|
uint64_t crflags;
|
|
|
|
|
|
|
|
crflags = (drrb->drr_flags & DRR_FLAG_CI_DATA) ?
|
|
|
|
DS_FLAG_CI_DATASET : 0;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
error = dsl_dataset_hold(dp, tofs, FTAG, &ds);
|
|
|
|
if (error == 0) {
|
|
|
|
/* create temporary clone */
|
|
|
|
dsobj = dsl_dataset_create_sync(ds->ds_dir, recv_clone_name,
|
|
|
|
ds->ds_prev, crflags, drba->drba_cred, tx);
|
|
|
|
dsl_dataset_rele(ds, FTAG);
|
|
|
|
} else {
|
|
|
|
dsl_dir_t *dd;
|
|
|
|
const char *tail;
|
|
|
|
dsl_dataset_t *origin = NULL;
|
|
|
|
|
|
|
|
VERIFY0(dsl_dir_hold(dp, tofs, FTAG, &dd, &tail));
|
|
|
|
|
|
|
|
if (drba->drba_origin != NULL) {
|
|
|
|
VERIFY0(dsl_dataset_hold(dp, drba->drba_origin,
|
|
|
|
FTAG, &origin));
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Create new dataset. */
|
|
|
|
dsobj = dsl_dataset_create_sync(dd,
|
|
|
|
strrchr(tofs, '/') + 1,
|
|
|
|
origin, crflags, drba->drba_cred, tx);
|
|
|
|
if (origin != NULL)
|
|
|
|
dsl_dataset_rele(origin, FTAG);
|
|
|
|
dsl_dir_rele(dd, FTAG);
|
|
|
|
drba->drba_cookie->drc_newfs = B_TRUE;
|
|
|
|
}
|
|
|
|
VERIFY0(dsl_dataset_own_obj(dp, dsobj, dmu_recv_tag, &newds));
|
|
|
|
|
|
|
|
dmu_buf_will_dirty(newds->ds_dbuf, tx);
|
|
|
|
newds->ds_phys->ds_flags |= DS_FLAG_INCONSISTENT;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
/*
|
|
|
|
* If we actually created a non-clone, we need to create the
|
|
|
|
* objset in our new dataset.
|
|
|
|
*/
|
2013-09-04 12:00:57 +00:00
|
|
|
if (BP_IS_HOLE(dsl_dataset_get_blkptr(newds))) {
|
2010-05-28 20:45:14 +00:00
|
|
|
(void) dmu_objset_create_impl(dp->dp_spa,
|
2013-09-04 12:00:57 +00:00
|
|
|
newds, dsl_dataset_get_blkptr(newds), drrb->drr_type, tx);
|
2010-05-28 20:45:14 +00:00
|
|
|
}
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
drba->drba_cookie->drc_ds = newds;
|
2010-05-28 20:45:14 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
spa_history_log_internal_ds(newds, "receive", tx, "");
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* NB: callers *MUST* call dmu_recv_stream() if dmu_recv_begin()
|
|
|
|
* succeeds; otherwise we will leak the holds on the datasets.
|
|
|
|
*/
|
|
|
|
int
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_recv_begin(char *tofs, char *tosnap, struct drr_begin *drrb,
|
|
|
|
boolean_t force, char *origin, dmu_recv_cookie_t *drc)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_recv_begin_arg_t drba = { 0 };
|
|
|
|
dmu_replay_record_t *drr;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
bzero(drc, sizeof (dmu_recv_cookie_t));
|
|
|
|
drc->drc_drrb = drrb;
|
|
|
|
drc->drc_tosnap = tosnap;
|
2013-09-04 12:00:57 +00:00
|
|
|
drc->drc_tofs = tofs;
|
2008-11-20 20:01:55 +00:00
|
|
|
drc->drc_force = force;
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
if (drrb->drr_magic == BSWAP_64(DMU_BACKUP_MAGIC))
|
|
|
|
drc->drc_byteswap = B_TRUE;
|
|
|
|
else if (drrb->drr_magic != DMU_BACKUP_MAGIC)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
drr = kmem_zalloc(sizeof (dmu_replay_record_t), KM_SLEEP);
|
|
|
|
drr->drr_type = DRR_BEGIN;
|
|
|
|
drr->drr_u.drr_begin = *drc->drc_drrb;
|
|
|
|
if (drc->drc_byteswap) {
|
|
|
|
fletcher_4_incremental_byteswap(drr,
|
|
|
|
sizeof (dmu_replay_record_t), &drc->drc_cksum);
|
|
|
|
} else {
|
|
|
|
fletcher_4_incremental_native(drr,
|
|
|
|
sizeof (dmu_replay_record_t), &drc->drc_cksum);
|
|
|
|
}
|
|
|
|
kmem_free(drr, sizeof (dmu_replay_record_t));
|
2010-05-28 20:45:14 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
if (drc->drc_byteswap) {
|
|
|
|
drrb->drr_magic = BSWAP_64(drrb->drr_magic);
|
|
|
|
drrb->drr_versioninfo = BSWAP_64(drrb->drr_versioninfo);
|
|
|
|
drrb->drr_creation_time = BSWAP_64(drrb->drr_creation_time);
|
|
|
|
drrb->drr_type = BSWAP_32(drrb->drr_type);
|
|
|
|
drrb->drr_toguid = BSWAP_64(drrb->drr_toguid);
|
|
|
|
drrb->drr_fromguid = BSWAP_64(drrb->drr_fromguid);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
drba.drba_origin = origin;
|
|
|
|
drba.drba_cookie = drc;
|
|
|
|
drba.drba_cred = CRED();
|
|
|
|
|
|
|
|
return (dsl_sync_task(tofs, dmu_recv_begin_check, dmu_recv_begin_sync,
|
|
|
|
&drba, 5));
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
struct restorearg {
|
|
|
|
int err;
|
2013-09-04 12:00:57 +00:00
|
|
|
boolean_t byteswap;
|
2008-11-20 20:01:55 +00:00
|
|
|
vnode_t *vp;
|
|
|
|
char *buf;
|
|
|
|
uint64_t voff;
|
|
|
|
int bufsize; /* amount of memory allocated for buf */
|
|
|
|
zio_cksum_t cksum;
|
2010-08-26 21:24:34 +00:00
|
|
|
avl_tree_t *guid_to_ds_map;
|
2008-11-20 20:01:55 +00:00
|
|
|
};
|
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
typedef struct guid_map_entry {
|
|
|
|
uint64_t guid;
|
|
|
|
dsl_dataset_t *gme_ds;
|
|
|
|
avl_node_t avlnode;
|
|
|
|
} guid_map_entry_t;
|
|
|
|
|
|
|
|
static int
|
|
|
|
guid_compare(const void *arg1, const void *arg2)
|
|
|
|
{
|
|
|
|
const guid_map_entry_t *gmep1 = arg1;
|
|
|
|
const guid_map_entry_t *gmep2 = arg2;
|
|
|
|
|
|
|
|
if (gmep1->guid < gmep2->guid)
|
|
|
|
return (-1);
|
|
|
|
else if (gmep1->guid > gmep2->guid)
|
|
|
|
return (1);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2010-08-26 21:24:34 +00:00
|
|
|
static void
|
|
|
|
free_guid_map_onexit(void *arg)
|
|
|
|
{
|
|
|
|
avl_tree_t *ca = arg;
|
|
|
|
void *cookie = NULL;
|
|
|
|
guid_map_entry_t *gmep;
|
|
|
|
|
|
|
|
while ((gmep = avl_destroy_nodes(ca, &cookie)) != NULL) {
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dataset_long_rele(gmep->gme_ds, gmep);
|
2013-04-10 21:54:56 +00:00
|
|
|
dsl_dataset_rele(gmep->gme_ds, gmep);
|
2010-08-26 21:24:34 +00:00
|
|
|
kmem_free(gmep, sizeof (guid_map_entry_t));
|
|
|
|
}
|
|
|
|
avl_destroy(ca);
|
|
|
|
kmem_free(ca, sizeof (avl_tree_t));
|
|
|
|
}
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
static void *
|
|
|
|
restore_read(struct restorearg *ra, int len)
|
|
|
|
{
|
|
|
|
void *rv;
|
|
|
|
int done = 0;
|
|
|
|
|
|
|
|
/* some things will require 8-byte alignment, so everything must */
|
2013-05-10 21:17:03 +00:00
|
|
|
ASSERT0(len % 8);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
while (done < len) {
|
|
|
|
ssize_t resid;
|
|
|
|
|
|
|
|
ra->err = vn_rdwr(UIO_READ, ra->vp,
|
|
|
|
(caddr_t)ra->buf + done, len - done,
|
|
|
|
ra->voff, UIO_SYSSPACE, FAPPEND,
|
|
|
|
RLIM64_INFINITY, CRED(), &resid);
|
|
|
|
|
|
|
|
if (resid == len - done)
|
2013-03-08 18:41:28 +00:00
|
|
|
ra->err = SET_ERROR(EINVAL);
|
2008-11-20 20:01:55 +00:00
|
|
|
ra->voff += len - done - resid;
|
|
|
|
done = len - resid;
|
2013-09-04 12:00:57 +00:00
|
|
|
if (ra->err != 0)
|
2008-11-20 20:01:55 +00:00
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
ASSERT3U(done, ==, len);
|
|
|
|
rv = ra->buf;
|
|
|
|
if (ra->byteswap)
|
|
|
|
fletcher_4_incremental_byteswap(rv, len, &ra->cksum);
|
|
|
|
else
|
|
|
|
fletcher_4_incremental_native(rv, len, &ra->cksum);
|
|
|
|
return (rv);
|
|
|
|
}
|
|
|
|
|
2010-08-26 17:58:36 +00:00
|
|
|
noinline static void
|
2008-11-20 20:01:55 +00:00
|
|
|
backup_byteswap(dmu_replay_record_t *drr)
|
|
|
|
{
|
|
|
|
#define DO64(X) (drr->drr_u.X = BSWAP_64(drr->drr_u.X))
|
|
|
|
#define DO32(X) (drr->drr_u.X = BSWAP_32(drr->drr_u.X))
|
|
|
|
drr->drr_type = BSWAP_32(drr->drr_type);
|
|
|
|
drr->drr_payloadlen = BSWAP_32(drr->drr_payloadlen);
|
|
|
|
switch (drr->drr_type) {
|
|
|
|
case DRR_BEGIN:
|
|
|
|
DO64(drr_begin.drr_magic);
|
2010-05-28 20:45:14 +00:00
|
|
|
DO64(drr_begin.drr_versioninfo);
|
2008-11-20 20:01:55 +00:00
|
|
|
DO64(drr_begin.drr_creation_time);
|
|
|
|
DO32(drr_begin.drr_type);
|
|
|
|
DO32(drr_begin.drr_flags);
|
|
|
|
DO64(drr_begin.drr_toguid);
|
|
|
|
DO64(drr_begin.drr_fromguid);
|
|
|
|
break;
|
|
|
|
case DRR_OBJECT:
|
|
|
|
DO64(drr_object.drr_object);
|
|
|
|
/* DO64(drr_object.drr_allocation_txg); */
|
|
|
|
DO32(drr_object.drr_type);
|
|
|
|
DO32(drr_object.drr_bonustype);
|
|
|
|
DO32(drr_object.drr_blksz);
|
|
|
|
DO32(drr_object.drr_bonuslen);
|
2010-05-28 20:45:14 +00:00
|
|
|
DO64(drr_object.drr_toguid);
|
2008-11-20 20:01:55 +00:00
|
|
|
break;
|
|
|
|
case DRR_FREEOBJECTS:
|
|
|
|
DO64(drr_freeobjects.drr_firstobj);
|
|
|
|
DO64(drr_freeobjects.drr_numobjs);
|
2010-05-28 20:45:14 +00:00
|
|
|
DO64(drr_freeobjects.drr_toguid);
|
2008-11-20 20:01:55 +00:00
|
|
|
break;
|
|
|
|
case DRR_WRITE:
|
|
|
|
DO64(drr_write.drr_object);
|
|
|
|
DO32(drr_write.drr_type);
|
|
|
|
DO64(drr_write.drr_offset);
|
|
|
|
DO64(drr_write.drr_length);
|
2010-05-28 20:45:14 +00:00
|
|
|
DO64(drr_write.drr_toguid);
|
|
|
|
DO64(drr_write.drr_key.ddk_cksum.zc_word[0]);
|
|
|
|
DO64(drr_write.drr_key.ddk_cksum.zc_word[1]);
|
|
|
|
DO64(drr_write.drr_key.ddk_cksum.zc_word[2]);
|
|
|
|
DO64(drr_write.drr_key.ddk_cksum.zc_word[3]);
|
|
|
|
DO64(drr_write.drr_key.ddk_prop);
|
|
|
|
break;
|
|
|
|
case DRR_WRITE_BYREF:
|
|
|
|
DO64(drr_write_byref.drr_object);
|
|
|
|
DO64(drr_write_byref.drr_offset);
|
|
|
|
DO64(drr_write_byref.drr_length);
|
|
|
|
DO64(drr_write_byref.drr_toguid);
|
|
|
|
DO64(drr_write_byref.drr_refguid);
|
|
|
|
DO64(drr_write_byref.drr_refobject);
|
|
|
|
DO64(drr_write_byref.drr_refoffset);
|
|
|
|
DO64(drr_write_byref.drr_key.ddk_cksum.zc_word[0]);
|
|
|
|
DO64(drr_write_byref.drr_key.ddk_cksum.zc_word[1]);
|
|
|
|
DO64(drr_write_byref.drr_key.ddk_cksum.zc_word[2]);
|
|
|
|
DO64(drr_write_byref.drr_key.ddk_cksum.zc_word[3]);
|
|
|
|
DO64(drr_write_byref.drr_key.ddk_prop);
|
2008-11-20 20:01:55 +00:00
|
|
|
break;
|
|
|
|
case DRR_FREE:
|
|
|
|
DO64(drr_free.drr_object);
|
|
|
|
DO64(drr_free.drr_offset);
|
|
|
|
DO64(drr_free.drr_length);
|
2010-05-28 20:45:14 +00:00
|
|
|
DO64(drr_free.drr_toguid);
|
|
|
|
break;
|
|
|
|
case DRR_SPILL:
|
|
|
|
DO64(drr_spill.drr_object);
|
|
|
|
DO64(drr_spill.drr_length);
|
|
|
|
DO64(drr_spill.drr_toguid);
|
2008-11-20 20:01:55 +00:00
|
|
|
break;
|
|
|
|
case DRR_END:
|
|
|
|
DO64(drr_end.drr_checksum.zc_word[0]);
|
|
|
|
DO64(drr_end.drr_checksum.zc_word[1]);
|
|
|
|
DO64(drr_end.drr_checksum.zc_word[2]);
|
|
|
|
DO64(drr_end.drr_checksum.zc_word[3]);
|
2010-05-28 20:45:14 +00:00
|
|
|
DO64(drr_end.drr_toguid);
|
2008-11-20 20:01:55 +00:00
|
|
|
break;
|
2010-08-26 16:52:41 +00:00
|
|
|
default:
|
|
|
|
break;
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
#undef DO64
|
|
|
|
#undef DO32
|
|
|
|
}
|
|
|
|
|
2010-08-26 17:58:36 +00:00
|
|
|
noinline static int
|
2008-11-20 20:01:55 +00:00
|
|
|
restore_object(struct restorearg *ra, objset_t *os, struct drr_object *drro)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
dmu_tx_t *tx;
|
2008-12-03 20:09:06 +00:00
|
|
|
void *data = NULL;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
if (drro->drr_type == DMU_OT_NONE ||
|
2012-12-13 23:24:15 +00:00
|
|
|
!DMU_OT_IS_VALID(drro->drr_type) ||
|
|
|
|
!DMU_OT_IS_VALID(drro->drr_bonustype) ||
|
2010-05-28 20:45:14 +00:00
|
|
|
drro->drr_checksumtype >= ZIO_CHECKSUM_FUNCTIONS ||
|
2008-11-20 20:01:55 +00:00
|
|
|
drro->drr_compress >= ZIO_COMPRESS_FUNCTIONS ||
|
|
|
|
P2PHASE(drro->drr_blksz, SPA_MINBLOCKSIZE) ||
|
|
|
|
drro->drr_blksz < SPA_MINBLOCKSIZE ||
|
|
|
|
drro->drr_blksz > SPA_MAXBLOCKSIZE ||
|
|
|
|
drro->drr_bonuslen > DN_MAX_BONUSLEN) {
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
2009-07-02 22:44:48 +00:00
|
|
|
err = dmu_object_info(os, drro->drr_object, NULL);
|
|
|
|
|
|
|
|
if (err != 0 && err != ENOENT)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2009-07-02 22:44:48 +00:00
|
|
|
|
2008-12-03 20:09:06 +00:00
|
|
|
if (drro->drr_bonuslen) {
|
|
|
|
data = restore_read(ra, P2ROUNDUP(drro->drr_bonuslen, 8));
|
2013-09-04 12:00:57 +00:00
|
|
|
if (ra->err != 0)
|
2008-12-03 20:09:06 +00:00
|
|
|
return (ra->err);
|
|
|
|
}
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
if (err == ENOENT) {
|
|
|
|
/* currently free, want to be allocated */
|
2009-07-02 22:44:48 +00:00
|
|
|
tx = dmu_tx_create(os);
|
2008-11-20 20:01:55 +00:00
|
|
|
dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT);
|
|
|
|
err = dmu_tx_assign(tx, TXG_WAIT);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err != 0) {
|
2008-11-20 20:01:55 +00:00
|
|
|
dmu_tx_abort(tx);
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
err = dmu_object_claim(os, drro->drr_object,
|
|
|
|
drro->drr_type, drro->drr_blksz,
|
|
|
|
drro->drr_bonustype, drro->drr_bonuslen, tx);
|
2009-07-02 22:44:48 +00:00
|
|
|
dmu_tx_commit(tx);
|
2008-11-20 20:01:55 +00:00
|
|
|
} else {
|
|
|
|
/* currently allocated, want to be allocated */
|
|
|
|
err = dmu_object_reclaim(os, drro->drr_object,
|
|
|
|
drro->drr_type, drro->drr_blksz,
|
2009-07-02 22:44:48 +00:00
|
|
|
drro->drr_bonustype, drro->drr_bonuslen);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err != 0) {
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2010-05-28 20:45:14 +00:00
|
|
|
}
|
2009-07-02 22:44:48 +00:00
|
|
|
|
|
|
|
tx = dmu_tx_create(os);
|
|
|
|
dmu_tx_hold_bonus(tx, drro->drr_object);
|
|
|
|
err = dmu_tx_assign(tx, TXG_WAIT);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err != 0) {
|
2009-07-02 22:44:48 +00:00
|
|
|
dmu_tx_abort(tx);
|
|
|
|
return (err);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
dmu_object_set_checksum(os, drro->drr_object, drro->drr_checksumtype,
|
|
|
|
tx);
|
2008-11-20 20:01:55 +00:00
|
|
|
dmu_object_set_compress(os, drro->drr_object, drro->drr_compress, tx);
|
|
|
|
|
2008-12-03 20:09:06 +00:00
|
|
|
if (data != NULL) {
|
2008-11-20 20:01:55 +00:00
|
|
|
dmu_buf_t *db;
|
2008-12-03 20:09:06 +00:00
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
VERIFY(0 == dmu_bonus_hold(os, drro->drr_object, FTAG, &db));
|
|
|
|
dmu_buf_will_dirty(db, tx);
|
|
|
|
|
|
|
|
ASSERT3U(db->db_size, >=, drro->drr_bonuslen);
|
|
|
|
bcopy(data, db->db_data, drro->drr_bonuslen);
|
|
|
|
if (ra->byteswap) {
|
2012-12-13 23:24:15 +00:00
|
|
|
dmu_object_byteswap_t byteswap =
|
|
|
|
DMU_OT_BYTESWAP(drro->drr_bonustype);
|
|
|
|
dmu_ot_byteswap[byteswap].ob_func(db->db_data,
|
2008-11-20 20:01:55 +00:00
|
|
|
drro->drr_bonuslen);
|
|
|
|
}
|
|
|
|
dmu_buf_rele(db, FTAG);
|
|
|
|
}
|
|
|
|
dmu_tx_commit(tx);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* ARGSUSED */
|
2010-08-26 17:58:36 +00:00
|
|
|
noinline static int
|
2008-11-20 20:01:55 +00:00
|
|
|
restore_freeobjects(struct restorearg *ra, objset_t *os,
|
|
|
|
struct drr_freeobjects *drrfo)
|
|
|
|
{
|
|
|
|
uint64_t obj;
|
|
|
|
|
|
|
|
if (drrfo->drr_firstobj + drrfo->drr_numobjs < drrfo->drr_firstobj)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
for (obj = drrfo->drr_firstobj;
|
|
|
|
obj < drrfo->drr_firstobj + drrfo->drr_numobjs;
|
|
|
|
(void) dmu_object_next(os, &obj, FALSE, 0)) {
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (dmu_object_info(os, obj, NULL) != 0)
|
|
|
|
continue;
|
|
|
|
|
2008-12-03 20:09:06 +00:00
|
|
|
err = dmu_free_object(os, obj);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err != 0)
|
2008-11-20 20:01:55 +00:00
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2010-08-26 17:58:36 +00:00
|
|
|
noinline static int
|
2008-11-20 20:01:55 +00:00
|
|
|
restore_write(struct restorearg *ra, objset_t *os,
|
|
|
|
struct drr_write *drrw)
|
|
|
|
{
|
|
|
|
dmu_tx_t *tx;
|
|
|
|
void *data;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (drrw->drr_offset + drrw->drr_length < drrw->drr_offset ||
|
2012-12-13 23:24:15 +00:00
|
|
|
!DMU_OT_IS_VALID(drrw->drr_type))
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
data = restore_read(ra, drrw->drr_length);
|
|
|
|
if (data == NULL)
|
|
|
|
return (ra->err);
|
|
|
|
|
|
|
|
if (dmu_object_info(os, drrw->drr_object, NULL) != 0)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
tx = dmu_tx_create(os);
|
|
|
|
|
|
|
|
dmu_tx_hold_write(tx, drrw->drr_object,
|
|
|
|
drrw->drr_offset, drrw->drr_length);
|
|
|
|
err = dmu_tx_assign(tx, TXG_WAIT);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err != 0) {
|
2008-11-20 20:01:55 +00:00
|
|
|
dmu_tx_abort(tx);
|
|
|
|
return (err);
|
|
|
|
}
|
2012-12-13 23:24:15 +00:00
|
|
|
if (ra->byteswap) {
|
|
|
|
dmu_object_byteswap_t byteswap =
|
|
|
|
DMU_OT_BYTESWAP(drrw->drr_type);
|
|
|
|
dmu_ot_byteswap[byteswap].ob_func(data, drrw->drr_length);
|
|
|
|
}
|
2008-11-20 20:01:55 +00:00
|
|
|
dmu_write(os, drrw->drr_object,
|
|
|
|
drrw->drr_offset, drrw->drr_length, data, tx);
|
|
|
|
dmu_tx_commit(tx);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
/*
|
|
|
|
* Handle a DRR_WRITE_BYREF record. This record is used in dedup'ed
|
|
|
|
* streams to refer to a copy of the data that is already on the
|
|
|
|
* system because it came in earlier in the stream. This function
|
|
|
|
* finds the earlier copy of the data, and uses that copy instead of
|
|
|
|
* data from the stream to fulfill this write.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
restore_write_byref(struct restorearg *ra, objset_t *os,
|
|
|
|
struct drr_write_byref *drrwbr)
|
|
|
|
{
|
|
|
|
dmu_tx_t *tx;
|
|
|
|
int err;
|
|
|
|
guid_map_entry_t gmesrch;
|
|
|
|
guid_map_entry_t *gmep;
|
|
|
|
avl_index_t where;
|
|
|
|
objset_t *ref_os = NULL;
|
|
|
|
dmu_buf_t *dbp;
|
|
|
|
|
|
|
|
if (drrwbr->drr_offset + drrwbr->drr_length < drrwbr->drr_offset)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2010-05-28 20:45:14 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* If the GUID of the referenced dataset is different from the
|
|
|
|
* GUID of the target dataset, find the referenced dataset.
|
|
|
|
*/
|
|
|
|
if (drrwbr->drr_toguid != drrwbr->drr_refguid) {
|
|
|
|
gmesrch.guid = drrwbr->drr_refguid;
|
2010-08-26 21:24:34 +00:00
|
|
|
if ((gmep = avl_find(ra->guid_to_ds_map, &gmesrch,
|
2010-05-28 20:45:14 +00:00
|
|
|
&where)) == NULL) {
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2010-05-28 20:45:14 +00:00
|
|
|
}
|
|
|
|
if (dmu_objset_from_ds(gmep->gme_ds, &ref_os))
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2010-05-28 20:45:14 +00:00
|
|
|
} else {
|
|
|
|
ref_os = os;
|
|
|
|
}
|
|
|
|
|
2010-08-26 16:52:42 +00:00
|
|
|
err = dmu_buf_hold(ref_os, drrwbr->drr_refobject,
|
|
|
|
drrwbr->drr_refoffset, FTAG, &dbp, DMU_READ_PREFETCH);
|
|
|
|
if (err)
|
2010-05-28 20:45:14 +00:00
|
|
|
return (err);
|
|
|
|
|
|
|
|
tx = dmu_tx_create(os);
|
|
|
|
|
|
|
|
dmu_tx_hold_write(tx, drrwbr->drr_object,
|
|
|
|
drrwbr->drr_offset, drrwbr->drr_length);
|
|
|
|
err = dmu_tx_assign(tx, TXG_WAIT);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err != 0) {
|
2010-05-28 20:45:14 +00:00
|
|
|
dmu_tx_abort(tx);
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
dmu_write(os, drrwbr->drr_object,
|
|
|
|
drrwbr->drr_offset, drrwbr->drr_length, dbp->db_data, tx);
|
|
|
|
dmu_buf_rele(dbp, FTAG);
|
|
|
|
dmu_tx_commit(tx);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
restore_spill(struct restorearg *ra, objset_t *os, struct drr_spill *drrs)
|
|
|
|
{
|
|
|
|
dmu_tx_t *tx;
|
|
|
|
void *data;
|
|
|
|
dmu_buf_t *db, *db_spill;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (drrs->drr_length < SPA_MINBLOCKSIZE ||
|
|
|
|
drrs->drr_length > SPA_MAXBLOCKSIZE)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2010-05-28 20:45:14 +00:00
|
|
|
|
|
|
|
data = restore_read(ra, drrs->drr_length);
|
|
|
|
if (data == NULL)
|
|
|
|
return (ra->err);
|
|
|
|
|
|
|
|
if (dmu_object_info(os, drrs->drr_object, NULL) != 0)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2010-05-28 20:45:14 +00:00
|
|
|
|
|
|
|
VERIFY(0 == dmu_bonus_hold(os, drrs->drr_object, FTAG, &db));
|
|
|
|
if ((err = dmu_spill_hold_by_bonus(db, FTAG, &db_spill)) != 0) {
|
|
|
|
dmu_buf_rele(db, FTAG);
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
tx = dmu_tx_create(os);
|
|
|
|
|
|
|
|
dmu_tx_hold_spill(tx, db->db_object);
|
|
|
|
|
|
|
|
err = dmu_tx_assign(tx, TXG_WAIT);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err != 0) {
|
2010-05-28 20:45:14 +00:00
|
|
|
dmu_buf_rele(db, FTAG);
|
|
|
|
dmu_buf_rele(db_spill, FTAG);
|
|
|
|
dmu_tx_abort(tx);
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
dmu_buf_will_dirty(db_spill, tx);
|
|
|
|
|
|
|
|
if (db_spill->db_size < drrs->drr_length)
|
|
|
|
VERIFY(0 == dbuf_spill_set_blksz(db_spill,
|
|
|
|
drrs->drr_length, tx));
|
|
|
|
bcopy(data, db_spill->db_data, drrs->drr_length);
|
|
|
|
|
|
|
|
dmu_buf_rele(db, FTAG);
|
|
|
|
dmu_buf_rele(db_spill, FTAG);
|
|
|
|
|
|
|
|
dmu_tx_commit(tx);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
/* ARGSUSED */
|
2010-08-26 17:58:36 +00:00
|
|
|
noinline static int
|
2008-11-20 20:01:55 +00:00
|
|
|
restore_free(struct restorearg *ra, objset_t *os,
|
|
|
|
struct drr_free *drrf)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (drrf->drr_length != -1ULL &&
|
|
|
|
drrf->drr_offset + drrf->drr_length < drrf->drr_offset)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
if (dmu_object_info(os, drrf->drr_object, NULL) != 0)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2008-12-03 20:09:06 +00:00
|
|
|
err = dmu_free_long_range(os, drrf->drr_object,
|
2008-11-20 20:01:55 +00:00
|
|
|
drrf->drr_offset, drrf->drr_length);
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
/* used to destroy the drc_ds on error */
|
|
|
|
static void
|
|
|
|
dmu_recv_cleanup_ds(dmu_recv_cookie_t *drc)
|
|
|
|
{
|
|
|
|
char name[MAXNAMELEN];
|
|
|
|
dsl_dataset_name(drc->drc_ds, name);
|
|
|
|
dsl_dataset_disown(drc->drc_ds, dmu_recv_tag);
|
|
|
|
(void) dsl_destroy_head(name);
|
|
|
|
}
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
/*
|
|
|
|
* NB: callers *must* call dmu_recv_end() if this succeeds.
|
|
|
|
*/
|
|
|
|
int
|
2010-08-26 21:24:34 +00:00
|
|
|
dmu_recv_stream(dmu_recv_cookie_t *drc, vnode_t *vp, offset_t *voffp,
|
|
|
|
int cleanup_fd, uint64_t *action_handlep)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
|
|
|
struct restorearg ra = { 0 };
|
|
|
|
dmu_replay_record_t *drr;
|
|
|
|
objset_t *os;
|
|
|
|
zio_cksum_t pcksum;
|
2010-05-28 20:45:14 +00:00
|
|
|
int featureflags;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
ra.byteswap = drc->drc_byteswap;
|
|
|
|
ra.cksum = drc->drc_cksum;
|
2008-11-20 20:01:55 +00:00
|
|
|
ra.vp = vp;
|
|
|
|
ra.voff = *voffp;
|
|
|
|
ra.bufsize = 1<<20;
|
2010-08-26 18:46:09 +00:00
|
|
|
ra.buf = vmem_alloc(ra.bufsize, KM_SLEEP);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
/* these were verified in dmu_recv_begin */
|
2013-09-04 12:00:57 +00:00
|
|
|
ASSERT3U(DMU_GET_STREAM_HDRTYPE(drc->drc_drrb->drr_versioninfo), ==,
|
2010-05-28 20:45:14 +00:00
|
|
|
DMU_SUBSTREAM);
|
2013-09-04 12:00:57 +00:00
|
|
|
ASSERT3U(drc->drc_drrb->drr_type, <, DMU_OST_NUMTYPES);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Open the objset we are modifying.
|
|
|
|
*/
|
2013-09-04 12:00:57 +00:00
|
|
|
VERIFY0(dmu_objset_from_ds(drc->drc_ds, &os));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
ASSERT(drc->drc_ds->ds_phys->ds_flags & DS_FLAG_INCONSISTENT);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
featureflags = DMU_GET_FEATUREFLAGS(drc->drc_drrb->drr_versioninfo);
|
|
|
|
|
|
|
|
/* if this stream is dedup'ed, set up the avl tree for guid mapping */
|
|
|
|
if (featureflags & DMU_BACKUP_FEATURE_DEDUP) {
|
2010-08-26 21:24:34 +00:00
|
|
|
minor_t minor;
|
|
|
|
|
|
|
|
if (cleanup_fd == -1) {
|
2013-03-08 18:41:28 +00:00
|
|
|
ra.err = SET_ERROR(EBADF);
|
2010-08-26 21:24:34 +00:00
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
ra.err = zfs_onexit_fd_hold(cleanup_fd, &minor);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (ra.err != 0) {
|
2010-08-26 21:24:34 +00:00
|
|
|
cleanup_fd = -1;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (*action_handlep == 0) {
|
|
|
|
ra.guid_to_ds_map =
|
|
|
|
kmem_alloc(sizeof (avl_tree_t), KM_SLEEP);
|
|
|
|
avl_create(ra.guid_to_ds_map, guid_compare,
|
|
|
|
sizeof (guid_map_entry_t),
|
|
|
|
offsetof(guid_map_entry_t, avlnode));
|
|
|
|
ra.err = zfs_onexit_add_cb(minor,
|
|
|
|
free_guid_map_onexit, ra.guid_to_ds_map,
|
|
|
|
action_handlep);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (ra.err != 0)
|
2010-08-26 21:24:34 +00:00
|
|
|
goto out;
|
|
|
|
} else {
|
|
|
|
ra.err = zfs_onexit_cb_data(minor, *action_handlep,
|
|
|
|
(void **)&ra.guid_to_ds_map);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (ra.err != 0)
|
2010-08-26 21:24:34 +00:00
|
|
|
goto out;
|
|
|
|
}
|
2011-10-16 06:41:05 +00:00
|
|
|
|
|
|
|
drc->drc_guid_to_ds_map = ra.guid_to_ds_map;
|
2010-05-28 20:45:14 +00:00
|
|
|
}
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
/*
|
|
|
|
* Read records and process them.
|
|
|
|
*/
|
|
|
|
pcksum = ra.cksum;
|
|
|
|
while (ra.err == 0 &&
|
|
|
|
NULL != (drr = restore_read(&ra, sizeof (*drr)))) {
|
|
|
|
if (issig(JUSTLOOKING) && issig(FORREAL)) {
|
2013-03-08 18:41:28 +00:00
|
|
|
ra.err = SET_ERROR(EINTR);
|
2008-11-20 20:01:55 +00:00
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ra.byteswap)
|
|
|
|
backup_byteswap(drr);
|
|
|
|
|
|
|
|
switch (drr->drr_type) {
|
|
|
|
case DRR_OBJECT:
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* We need to make a copy of the record header,
|
|
|
|
* because restore_{object,write} may need to
|
|
|
|
* restore_read(), which will invalidate drr.
|
|
|
|
*/
|
|
|
|
struct drr_object drro = drr->drr_u.drr_object;
|
|
|
|
ra.err = restore_object(&ra, os, &drro);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case DRR_FREEOBJECTS:
|
|
|
|
{
|
|
|
|
struct drr_freeobjects drrfo =
|
|
|
|
drr->drr_u.drr_freeobjects;
|
|
|
|
ra.err = restore_freeobjects(&ra, os, &drrfo);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case DRR_WRITE:
|
|
|
|
{
|
|
|
|
struct drr_write drrw = drr->drr_u.drr_write;
|
|
|
|
ra.err = restore_write(&ra, os, &drrw);
|
|
|
|
break;
|
|
|
|
}
|
2010-05-28 20:45:14 +00:00
|
|
|
case DRR_WRITE_BYREF:
|
|
|
|
{
|
|
|
|
struct drr_write_byref drrwbr =
|
|
|
|
drr->drr_u.drr_write_byref;
|
|
|
|
ra.err = restore_write_byref(&ra, os, &drrwbr);
|
|
|
|
break;
|
|
|
|
}
|
2008-11-20 20:01:55 +00:00
|
|
|
case DRR_FREE:
|
|
|
|
{
|
|
|
|
struct drr_free drrf = drr->drr_u.drr_free;
|
|
|
|
ra.err = restore_free(&ra, os, &drrf);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case DRR_END:
|
|
|
|
{
|
|
|
|
struct drr_end drre = drr->drr_u.drr_end;
|
|
|
|
/*
|
|
|
|
* We compare against the *previous* checksum
|
|
|
|
* value, because the stored checksum is of
|
|
|
|
* everything before the DRR_END record.
|
|
|
|
*/
|
|
|
|
if (!ZIO_CHECKSUM_EQUAL(drre.drr_checksum, pcksum))
|
2013-03-08 18:41:28 +00:00
|
|
|
ra.err = SET_ERROR(ECKSUM);
|
2008-11-20 20:01:55 +00:00
|
|
|
goto out;
|
|
|
|
}
|
2010-05-28 20:45:14 +00:00
|
|
|
case DRR_SPILL:
|
|
|
|
{
|
|
|
|
struct drr_spill drrs = drr->drr_u.drr_spill;
|
|
|
|
ra.err = restore_spill(&ra, os, &drrs);
|
|
|
|
break;
|
|
|
|
}
|
2008-11-20 20:01:55 +00:00
|
|
|
default:
|
2013-03-08 18:41:28 +00:00
|
|
|
ra.err = SET_ERROR(EINVAL);
|
2008-11-20 20:01:55 +00:00
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
pcksum = ra.cksum;
|
|
|
|
}
|
|
|
|
ASSERT(ra.err != 0);
|
|
|
|
|
|
|
|
out:
|
2010-08-26 21:24:34 +00:00
|
|
|
if ((featureflags & DMU_BACKUP_FEATURE_DEDUP) && (cleanup_fd != -1))
|
|
|
|
zfs_onexit_fd_rele(cleanup_fd);
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
if (ra.err != 0) {
|
|
|
|
/*
|
2009-08-18 18:43:27 +00:00
|
|
|
* destroy what we created, so we don't leave it in the
|
|
|
|
* inconsistent restoring state.
|
2008-11-20 20:01:55 +00:00
|
|
|
*/
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_recv_cleanup_ds(drc);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
2010-08-26 18:46:09 +00:00
|
|
|
vmem_free(ra.buf, ra.bufsize);
|
2008-11-20 20:01:55 +00:00
|
|
|
*voffp = ra.voff;
|
|
|
|
return (ra.err);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_recv_end_check(void *arg, dmu_tx_t *tx)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_recv_cookie_t *drc = arg;
|
|
|
|
dsl_pool_t *dp = dmu_tx_pool(tx);
|
|
|
|
int error;
|
|
|
|
|
|
|
|
ASSERT3P(drc->drc_ds->ds_owner, ==, dmu_recv_tag);
|
|
|
|
|
|
|
|
if (!drc->drc_newfs) {
|
|
|
|
dsl_dataset_t *origin_head;
|
|
|
|
|
|
|
|
error = dsl_dataset_hold(dp, drc->drc_tofs, FTAG, &origin_head);
|
|
|
|
if (error != 0)
|
|
|
|
return (error);
|
|
|
|
error = dsl_dataset_clone_swap_check_impl(drc->drc_ds,
|
|
|
|
origin_head, drc->drc_force);
|
|
|
|
if (error != 0) {
|
|
|
|
dsl_dataset_rele(origin_head, FTAG);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
error = dsl_dataset_snapshot_check_impl(origin_head,
|
2013-07-27 17:51:50 +00:00
|
|
|
drc->drc_tosnap, tx, B_TRUE);
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dataset_rele(origin_head, FTAG);
|
|
|
|
if (error != 0)
|
|
|
|
return (error);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
error = dsl_destroy_head_check_impl(drc->drc_ds, 1);
|
|
|
|
} else {
|
|
|
|
error = dsl_dataset_snapshot_check_impl(drc->drc_ds,
|
2013-07-27 17:51:50 +00:00
|
|
|
drc->drc_tosnap, tx, B_TRUE);
|
2013-09-04 12:00:57 +00:00
|
|
|
}
|
|
|
|
return (error);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_recv_end_sync(void *arg, dmu_tx_t *tx)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_recv_cookie_t *drc = arg;
|
|
|
|
dsl_pool_t *dp = dmu_tx_pool(tx);
|
|
|
|
|
|
|
|
spa_history_log_internal_ds(drc->drc_ds, "finish receiving",
|
|
|
|
tx, "snap=%s", drc->drc_tosnap);
|
|
|
|
|
|
|
|
if (!drc->drc_newfs) {
|
|
|
|
dsl_dataset_t *origin_head;
|
|
|
|
|
|
|
|
VERIFY0(dsl_dataset_hold(dp, drc->drc_tofs, FTAG,
|
|
|
|
&origin_head));
|
|
|
|
dsl_dataset_clone_swap_sync_impl(drc->drc_ds,
|
|
|
|
origin_head, tx);
|
|
|
|
dsl_dataset_snapshot_sync_impl(origin_head,
|
|
|
|
drc->drc_tosnap, tx);
|
|
|
|
|
|
|
|
/* set snapshot's creation time and guid */
|
|
|
|
dmu_buf_will_dirty(origin_head->ds_prev->ds_dbuf, tx);
|
|
|
|
origin_head->ds_prev->ds_phys->ds_creation_time =
|
|
|
|
drc->drc_drrb->drr_creation_time;
|
|
|
|
origin_head->ds_prev->ds_phys->ds_guid =
|
|
|
|
drc->drc_drrb->drr_toguid;
|
|
|
|
origin_head->ds_prev->ds_phys->ds_flags &=
|
|
|
|
~DS_FLAG_INCONSISTENT;
|
|
|
|
|
|
|
|
dmu_buf_will_dirty(origin_head->ds_dbuf, tx);
|
|
|
|
origin_head->ds_phys->ds_flags &= ~DS_FLAG_INCONSISTENT;
|
|
|
|
|
|
|
|
dsl_dataset_rele(origin_head, FTAG);
|
|
|
|
dsl_destroy_head_sync_impl(drc->drc_ds, tx);
|
|
|
|
} else {
|
|
|
|
dsl_dataset_t *ds = drc->drc_ds;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dataset_snapshot_sync_impl(ds, drc->drc_tosnap, tx);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
/* set snapshot's creation time and guid */
|
|
|
|
dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx);
|
|
|
|
ds->ds_prev->ds_phys->ds_creation_time =
|
|
|
|
drc->drc_drrb->drr_creation_time;
|
|
|
|
ds->ds_prev->ds_phys->ds_guid = drc->drc_drrb->drr_toguid;
|
|
|
|
ds->ds_prev->ds_phys->ds_flags &= ~DS_FLAG_INCONSISTENT;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_buf_will_dirty(ds->ds_dbuf, tx);
|
|
|
|
ds->ds_phys->ds_flags &= ~DS_FLAG_INCONSISTENT;
|
|
|
|
}
|
|
|
|
drc->drc_newsnapobj = drc->drc_ds->ds_phys->ds_prev_snap_obj;
|
|
|
|
/*
|
|
|
|
* Release the hold from dmu_recv_begin. This must be done before
|
|
|
|
* we return to open context, so that when we free the dataset's dnode,
|
|
|
|
* we can evict its bonus buffer.
|
|
|
|
*/
|
|
|
|
dsl_dataset_disown(drc->drc_ds, dmu_recv_tag);
|
|
|
|
drc->drc_ds = NULL;
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
2011-10-16 06:41:05 +00:00
|
|
|
static int
|
2013-09-04 12:00:57 +00:00
|
|
|
add_ds_to_guidmap(const char *name, avl_tree_t *guid_map, uint64_t snapobj)
|
2011-10-16 06:41:05 +00:00
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_pool_t *dp;
|
2011-10-16 06:41:05 +00:00
|
|
|
dsl_dataset_t *snapds;
|
|
|
|
guid_map_entry_t *gmep;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
ASSERT(guid_map != NULL);
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
err = dsl_pool_hold(name, FTAG, &dp);
|
|
|
|
if (err != 0)
|
|
|
|
return (err);
|
2013-04-10 21:54:56 +00:00
|
|
|
gmep = kmem_alloc(sizeof (*gmep), KM_SLEEP);
|
|
|
|
err = dsl_dataset_hold_obj(dp, snapobj, gmep, &snapds);
|
2011-10-16 06:41:05 +00:00
|
|
|
if (err == 0) {
|
|
|
|
gmep->guid = snapds->ds_phys->ds_guid;
|
|
|
|
gmep->gme_ds = snapds;
|
|
|
|
avl_add(guid_map, gmep);
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dataset_long_hold(snapds, gmep);
|
2013-04-10 21:54:56 +00:00
|
|
|
} else {
|
|
|
|
kmem_free(gmep, sizeof (*gmep));
|
2011-10-16 06:41:05 +00:00
|
|
|
}
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_pool_rele(dp, FTAG);
|
2011-10-16 06:41:05 +00:00
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
static int dmu_recv_end_modified_blocks = 3;
|
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
static int
|
|
|
|
dmu_recv_existing_end(dmu_recv_cookie_t *drc)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
int error;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
#ifdef _KERNEL
|
|
|
|
char *name;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
/*
|
|
|
|
* We will be destroying the ds; make sure its origin is unmounted if
|
|
|
|
* necessary.
|
|
|
|
*/
|
|
|
|
name = kmem_alloc(MAXNAMELEN, KM_SLEEP);
|
|
|
|
dsl_dataset_name(drc->drc_ds, name);
|
|
|
|
zfs_destroy_unmount_origin(name);
|
|
|
|
kmem_free(name, MAXNAMELEN);
|
|
|
|
#endif
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
error = dsl_sync_task(drc->drc_tofs,
|
|
|
|
dmu_recv_end_check, dmu_recv_end_sync, drc,
|
|
|
|
dmu_recv_end_modified_blocks);
|
|
|
|
|
|
|
|
if (error != 0)
|
|
|
|
dmu_recv_cleanup_ds(drc);
|
|
|
|
return (error);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
2010-05-28 20:45:14 +00:00
|
|
|
|
|
|
|
static int
|
|
|
|
dmu_recv_new_end(dmu_recv_cookie_t *drc)
|
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
int error;
|
2010-05-28 20:45:14 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
error = dsl_sync_task(drc->drc_tofs,
|
|
|
|
dmu_recv_end_check, dmu_recv_end_sync, drc,
|
|
|
|
dmu_recv_end_modified_blocks);
|
2010-05-28 20:45:14 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
if (error != 0) {
|
|
|
|
dmu_recv_cleanup_ds(drc);
|
|
|
|
} else if (drc->drc_guid_to_ds_map != NULL) {
|
|
|
|
(void) add_ds_to_guidmap(drc->drc_tofs,
|
|
|
|
drc->drc_guid_to_ds_map,
|
|
|
|
drc->drc_newsnapobj);
|
2010-05-28 20:45:14 +00:00
|
|
|
}
|
2013-09-04 12:00:57 +00:00
|
|
|
return (error);
|
2010-05-28 20:45:14 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
dmu_recv_end(dmu_recv_cookie_t *drc)
|
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
if (drc->drc_newfs)
|
2010-05-28 20:45:14 +00:00
|
|
|
return (dmu_recv_new_end(drc));
|
2013-09-04 12:00:57 +00:00
|
|
|
else
|
|
|
|
return (dmu_recv_existing_end(drc));
|
2010-05-28 20:45:14 +00:00
|
|
|
}
|