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This type of recv is used to heal corrupted data when a replica of the data already exists (in the form of a send file for example). With the provided send stream, corrective receive will read from disk blocks described by the WRITE records. When any of the reads come back with ECKSUM we use the data from the corresponding WRITE record to rewrite the corrupted block. Reviewed-by: Paul Dagnelie <pcd@delphix.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Paul Zuchowski <pzuchowski@datto.com> Signed-off-by: Alek Pinchuk <apinchuk@axcient.com> Closes #9372
90 lines
2.8 KiB
C
90 lines
2.8 KiB
C
/*
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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 https://opensource.org/licenses/CDDL-1.0.
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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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* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2012, 2020 by Delphix. All rights reserved.
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* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
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* Copyright (c) 2013, Joyent, Inc. All rights reserved.
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* Copyright (c) 2019 Datto Inc.
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*/
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#ifndef _DMU_RECV_H
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#define _DMU_RECV_H
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#include <sys/inttypes.h>
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#include <sys/dsl_bookmark.h>
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#include <sys/dsl_dataset.h>
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#include <sys/spa.h>
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#include <sys/objlist.h>
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extern const char *const recv_clone_name;
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typedef struct dmu_recv_cookie {
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struct dsl_dataset *drc_ds;
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struct dmu_replay_record *drc_drr_begin;
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struct drr_begin *drc_drrb;
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const char *drc_tofs;
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const char *drc_tosnap;
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boolean_t drc_newfs;
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boolean_t drc_byteswap;
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uint64_t drc_featureflags;
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boolean_t drc_force;
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boolean_t drc_heal;
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boolean_t drc_resumable;
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boolean_t drc_should_save;
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boolean_t drc_raw;
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boolean_t drc_clone;
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boolean_t drc_spill;
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nvlist_t *drc_keynvl;
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uint64_t drc_fromsnapobj;
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uint64_t drc_ivset_guid;
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void *drc_owner;
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cred_t *drc_cred;
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proc_t *drc_proc;
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nvlist_t *drc_begin_nvl;
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objset_t *drc_os;
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zfs_file_t *drc_fp; /* The file to read the stream from */
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uint64_t drc_voff; /* The current offset in the stream */
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uint64_t drc_bytes_read;
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/*
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* A record that has had its payload read in, but hasn't yet been handed
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* off to the worker thread.
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*/
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struct receive_record_arg *drc_rrd;
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/* A record that has had its header read in, but not its payload. */
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struct receive_record_arg *drc_next_rrd;
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zio_cksum_t drc_cksum;
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zio_cksum_t drc_prev_cksum;
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/* Sorted list of objects not to issue prefetches for. */
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objlist_t *drc_ignore_objlist;
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} dmu_recv_cookie_t;
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int dmu_recv_begin(char *, char *, dmu_replay_record_t *,
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boolean_t, boolean_t, boolean_t, nvlist_t *, nvlist_t *, char *,
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dmu_recv_cookie_t *, zfs_file_t *, offset_t *);
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int dmu_recv_stream(dmu_recv_cookie_t *, offset_t *);
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int dmu_recv_end(dmu_recv_cookie_t *, void *);
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boolean_t dmu_objset_is_receiving(objset_t *);
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#endif /* _DMU_RECV_H */
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