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OpenZFS 6393 - zfs receive a full send as a clone

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Authored by: Paul Dagnelie <pcd@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Reviewed by: Richard Elling <Richard.Elling@RichardElling.com>
Approved by: Dan McDonald <danmcd@omniti.com>
Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>

OpenZFS-issue: https://www.illumos.org/issues/6394
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/68ecb2e
This commit is contained in:
Paul Dagnelie
2016-06-09 11:18:16 -07:00
committed by Brian Behlendorf
parent fd41e93563
commit e6d3a843d6
5 changed files with 131 additions and 64 deletions
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include/sys/zfs_ioctl.h
+11 -1
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@@ -20,7 +20,7 @@
*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, 2014 by Delphix. All rights reserved.
* Copyright (c) 2012, 2015 by Delphix. All rights reserved.
*/
#ifndef _SYS_ZFS_IOCTL_H
@@ -138,6 +138,16 @@ typedef enum dmu_send_resume_token_version {
#define DRR_FLAG_CLONE (1<<0)
#define DRR_FLAG_CI_DATA (1<<1)
/*
* This send stream, if it is a full send, includes the FREE and FREEOBJECT
* records that are created by the sending process. This means that the send
* stream can be received as a clone, even though it is not an incremental.
* This is not implemented as a feature flag, because the receiving side does
* not need to have implemented it to receive this stream; it is fully backwards
* compatible. We need a flag, though, because full send streams without it
* cannot necessarily be received as a clone correctly.
*/
#define DRR_FLAG_FREERECORDS (1<<2)
/*
* flags in the drr_checksumflags field in the DRR_WRITE and