2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2014 Filipe Manana. All Rights Reserved.
5 # FS QA Test No. btrfs/030
7 # Regression test for btrfs' incremental send feature:
9 # 1) Create several nested directories;
10 # 2) Create a read only snapshot;
11 # 3) Change the parentship of some of the deepest directories in a reverse
12 # way, so that parents become children and children become parents;
13 # 4) Create another read only snapshot and use it for an incremental send
14 # relative to the first snapshot.
16 # At step 4 btrfs' send entered an infinite loop, increasing the memory it
17 # used while building path strings until a krealloc was unable to allocate
18 # more memory, which caused a warning dump in dmesg.
21 seqres=$RESULT_DIR/$seq
22 echo "QA output created by $seq"
25 status=1 # failure is the default!
26 trap "_cleanup; exit \$status" 0 1 2 3 15
33 # get standard environment, filters and checks
37 # real QA test starts here
44 _scratch_mkfs >/dev/null 2>&1
48 mkdir -p $SCRATCH_MNT/a/b/c
49 echo "hello" > $SCRATCH_MNT/a/b/c/file.txt
50 mkdir $SCRATCH_MNT/a/b/c/d
51 mkdir $SCRATCH_MNT/a/b/c2
52 mkdir $SCRATCH_MNT/a/b/www
53 echo "hey" > $SCRATCH_MNT/a/b/foobar.txt
54 mkdir -p $SCRATCH_MNT/a/b/c3/x/y
56 mkdir -p $SCRATCH_MNT/a/b/foo1/foo2
57 echo "hey" > $SCRATCH_MNT/a/b/foo1/foo2/f.txt
58 mkdir $SCRATCH_MNT/a/b/foo3
60 mkdir -p $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4
61 echo "ola" > $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello.txt
63 # Directory tree looks like:
69 # | |-- file.txt (ino 260)
74 # |-- foobar.txt (ino 264)
81 # | |---foo2/ (ino 269)
82 # | |---f.txt (ino 270)
90 # |--hello.txt (ino 276)
92 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
94 echo " world" >> $SCRATCH_MNT/a/b/c/file.txt
95 mv $SCRATCH_MNT/a/b/c/d $SCRATCH_MNT/a/b/c2/d2
96 mv $SCRATCH_MNT/a/b/c $SCRATCH_MNT/a/b/c2/d2/cc
97 mv $SCRATCH_MNT/a/b/c3/x/y $SCRATCH_MNT/a/b/c2/y2
98 mv $SCRATCH_MNT/a/b/c3/x $SCRATCH_MNT/a/b/c2/y2/x2
99 mv $SCRATCH_MNT/a/b/c3 $SCRATCH_MNT/a/b/c2/y2/x2/Z
100 mv $SCRATCH_MNT/a/b/www $SCRATCH_MNT/a/b/c2/y2/x2/WWW
101 mv $SCRATCH_MNT/a/b/foobar.txt $SCRATCH_MNT/a/b/c2/y2/x2/qwerty.txt
102 ln $SCRATCH_MNT/a/b/c2/d2/cc/file.txt $SCRATCH_MNT/a/b/c2/y2/x2/Z/file_link.txt
103 mv $SCRATCH_MNT/a/b/c2/d2/cc/file.txt $SCRATCH_MNT/a/b/c2/y2/x2
105 mv $SCRATCH_MNT/a/b/foo3 $SCRATCH_MNT/a/b/foo1/foo33
106 mv $SCRATCH_MNT/a/b/foo1/foo2 $SCRATCH_MNT/a/b/foo1/foo33/foo22
107 mv $SCRATCH_MNT/a/b/foo1/foo33/foo22/f.txt \
108 $SCRATCH_MNT/a/b/foo1/foo33/foo22/fff.txt
110 echo " hello" >> $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello.txt
111 mv $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello.txt \
112 $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello2.txt
113 mv $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4 $SCRATCH_MNT/a/b/k44
114 mv $SCRATCH_MNT/a/b/bar1/bar2/bar3 $SCRATCH_MNT/a/b/k44
115 mv $SCRATCH_MNT/a/b/bar1/bar2 $SCRATCH_MNT/a/b/k44/bar3
116 mv $SCRATCH_MNT/a/b/bar1 $SCRATCH_MNT/a/b/k44/bar3/bar2/k11
118 # Directory tree now looks like:
124 # | |-- d2/ (ino 261)
125 # | | |-- cc/ (ino 259)
127 # | |-- y2/ (ino 267)
128 # | |-- x2/ (ino 266)
129 # | |-- file.txt (ino 260)
130 # | |-- qwerty.txt (ino 264)
131 # | |-- WWW/ (ino 263)
133 # | |-- file_link.txt
135 # |-- foo1/ (ino 268)
136 # | |---foo33/ (ino 271)
137 # | |---foo22/ (ino 269)
138 # | |---fff.txt (ino 270)
141 # |-- hello2.txt (ino 276)
142 # |-- bar3/ (ino 274)
143 # |-- bar2/ (ino 273)
146 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2
148 run_check $FSSUM_PROG -A -f -w $tmp/1.fssum $SCRATCH_MNT/mysnap1
149 run_check $FSSUM_PROG -A -f -w $tmp/2.fssum -x $SCRATCH_MNT/mysnap2/mysnap1 \
152 _run_btrfs_util_prog send -f $tmp/1.snap $SCRATCH_MNT/mysnap1
153 _run_btrfs_util_prog send -f $tmp/2.snap -p $SCRATCH_MNT/mysnap1 \
157 _check_btrfs_filesystem $SCRATCH_DEV
158 _scratch_mkfs >/dev/null 2>&1
161 _run_btrfs_util_prog receive -f $tmp/1.snap $SCRATCH_MNT
162 run_check $FSSUM_PROG -r $tmp/1.fssum $SCRATCH_MNT/mysnap1 2>> $seqres.full
164 _run_btrfs_util_prog receive -f $tmp/2.snap $SCRATCH_MNT
165 run_check $FSSUM_PROG -r $tmp/2.fssum $SCRATCH_MNT/mysnap2 2>> $seqres.full
168 _check_btrfs_filesystem $SCRATCH_DEV