1#!/bin/ksh
2
3#
4# This file and its contents are supplied under the terms of the
5# Common Development and Distribution License ("CDDL"), version 1.0.
6# You may only use this file in accordance with the terms of version
7# 1.0 of the CDDL.
8#
9# A full copy of the text of the CDDL should have accompanied this
10# source.  A copy of the CDDL is also available via the Internet at
11# http://www.illumos.org/license/CDDL.
12#
13
14#
15# Copyright (c) 2019 by Lawrence Livermore National Security, LLC.
16#
17
18. $STF_SUITE/include/libtest.shlib
19. $STF_SUITE/tests/functional/rsend/rsend.kshlib
20
21#
22# Description:
23# Verify incremental receive properly handles reallocation.
24#
25# Strategy:
26# 1. Create a pool containing an encrypted filesystem.
27# 2. Use 'zfs send -wp' to perform a raw send of the initial filesystem.
28# 3. Repeat the followings steps N times to verify raw incremental receives.
29#   a) Randomly change several key dataset properties.
30#   b) Modify the contents of the filesystem such that dnode reallocation
31#      is likely during the 'zfs receive', and receive_object() exercises
32#      as much of its functionality as possible.
33#   c) Create a new snapshot and generate an raw incremental stream.
34#   d) Receive the raw incremental stream and verify the received contents.
35#   e) Destroy the incremental stream and old snapshot.
36#
37
38log_assert "Verify incremental receive handles reallocation"
39
40function cleanup
41{
42	rm -f $BACKDIR/fs@*
43	destroy_dataset $POOL/fs "-rR"
44	destroy_dataset $POOL/newfs "-rR"
45}
46
47log_onexit cleanup
48
49log_must zfs create $POOL/fs
50
51last_snap=1
52log_must zfs snapshot $POOL/fs@snap${last_snap}
53log_must eval "zfs send $POOL/fs@snap${last_snap} >$BACKDIR/fs@snap${last_snap}"
54log_must eval "zfs recv $POOL/newfs < $BACKDIR/fs@snap${last_snap}"
55
56# Set atime=off to prevent the recursive_cksum from modifying newfs.
57log_must zfs set atime=off $POOL/newfs
58
59for i in {1..5}; do
60	# Randomly modify several dataset properties in order to generate
61	# more interesting incremental send streams.
62	rand_set_prop $POOL/fs checksum "off" "fletcher4" "sha256"
63	rand_set_prop $POOL/fs compression "off" "lzjb" "gzip" "lz4"
64	rand_set_prop $POOL/fs recordsize "32K" "128K"
65	rand_set_prop $POOL/fs dnodesize "legacy" "auto" "4k"
66
67	# Churn the filesystem in such a way that we're likely to be both
68	# allocating and reallocating objects in the incremental stream.
69	log_must churn_files 1000 524288 $POOL/fs 0
70	expected_cksum=$(recursive_cksum /$fs)
71
72	# Create a snapshot and use it to send an incremental stream.
73	this_snap=$((last_snap + 1))
74	log_must zfs snapshot $POOL/fs@snap${this_snap}
75	log_must eval "zfs send -i $POOL/fs@snap${last_snap} \
76	    $POOL/fs@snap${this_snap} > $BACKDIR/fs@snap${this_snap}"
77
78	# Receive the incremental stream and verify the received contents.
79	log_must eval "zfs recv $POOL/newfs < $BACKDIR/fs@snap${this_snap}"
80	actual_cksum=$(recursive_cksum /$POOL/newfs)
81
82	if [[ "$expected_cksum" != "$actual_cksum" ]]; then
83		log_fail "Checksums differ ($expected_cksum != $actual_cksum)"
84	fi
85
86	# Destroy the incremental stream and old snapshot.
87	rm -f $BACKDIR/fs@snap${last_snap}
88	log_must zfs destroy $POOL/fs@snap${last_snap}
89	log_must zfs destroy $POOL/newfs@snap${last_snap}
90	last_snap=$this_snap
91done
92
93log_pass "Verify incremental receive handles dnode reallocation"
94