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
45 _scratch_mkfs >/dev/null 2>&1
49 mkdir -p $SCRATCH_MNT/a/b/c
50 echo "hello" > $SCRATCH_MNT/a/b/c/file.txt
51 mkdir $SCRATCH_MNT/a/b/c/d
52 mkdir $SCRATCH_MNT/a/b/c2
53 mkdir $SCRATCH_MNT/a/b/www
54 echo "hey" > $SCRATCH_MNT/a/b/foobar.txt
55 mkdir -p $SCRATCH_MNT/a/b/c3/x/y
57 mkdir -p $SCRATCH_MNT/a/b/foo1/foo2
58 echo "hey" > $SCRATCH_MNT/a/b/foo1/foo2/f.txt
59 mkdir $SCRATCH_MNT/a/b/foo3
61 mkdir -p $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4
62 echo "ola" > $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello.txt
64 # Directory tree looks like:
70 # | |-- file.txt (ino 260)
75 # |-- foobar.txt (ino 264)
82 # | |---foo2/ (ino 269)
83 # | |---f.txt (ino 270)
91 # |--hello.txt (ino 276)
93 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
95 echo " world" >> $SCRATCH_MNT/a/b/c/file.txt
96 mv $SCRATCH_MNT/a/b/c/d $SCRATCH_MNT/a/b/c2/d2
97 mv $SCRATCH_MNT/a/b/c $SCRATCH_MNT/a/b/c2/d2/cc
98 mv $SCRATCH_MNT/a/b/c3/x/y $SCRATCH_MNT/a/b/c2/y2
99 mv $SCRATCH_MNT/a/b/c3/x $SCRATCH_MNT/a/b/c2/y2/x2
100 mv $SCRATCH_MNT/a/b/c3 $SCRATCH_MNT/a/b/c2/y2/x2/Z
101 mv $SCRATCH_MNT/a/b/www $SCRATCH_MNT/a/b/c2/y2/x2/WWW
102 mv $SCRATCH_MNT/a/b/foobar.txt $SCRATCH_MNT/a/b/c2/y2/x2/qwerty.txt
103 ln $SCRATCH_MNT/a/b/c2/d2/cc/file.txt $SCRATCH_MNT/a/b/c2/y2/x2/Z/file_link.txt
104 mv $SCRATCH_MNT/a/b/c2/d2/cc/file.txt $SCRATCH_MNT/a/b/c2/y2/x2
106 mv $SCRATCH_MNT/a/b/foo3 $SCRATCH_MNT/a/b/foo1/foo33
107 mv $SCRATCH_MNT/a/b/foo1/foo2 $SCRATCH_MNT/a/b/foo1/foo33/foo22
108 mv $SCRATCH_MNT/a/b/foo1/foo33/foo22/f.txt \
109 $SCRATCH_MNT/a/b/foo1/foo33/foo22/fff.txt
111 echo " hello" >> $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello.txt
112 mv $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello.txt \
113 $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello2.txt
114 mv $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4 $SCRATCH_MNT/a/b/k44
115 mv $SCRATCH_MNT/a/b/bar1/bar2/bar3 $SCRATCH_MNT/a/b/k44
116 mv $SCRATCH_MNT/a/b/bar1/bar2 $SCRATCH_MNT/a/b/k44/bar3
117 mv $SCRATCH_MNT/a/b/bar1 $SCRATCH_MNT/a/b/k44/bar3/bar2/k11
119 # Directory tree now looks like:
125 # | |-- d2/ (ino 261)
126 # | | |-- cc/ (ino 259)
128 # | |-- y2/ (ino 267)
129 # | |-- x2/ (ino 266)
130 # | |-- file.txt (ino 260)
131 # | |-- qwerty.txt (ino 264)
132 # | |-- WWW/ (ino 263)
134 # | |-- file_link.txt
136 # |-- foo1/ (ino 268)
137 # | |---foo33/ (ino 271)
138 # | |---foo22/ (ino 269)
139 # | |---fff.txt (ino 270)
142 # |-- hello2.txt (ino 276)
143 # |-- bar3/ (ino 274)
144 # |-- bar2/ (ino 273)
147 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2
149 run_check $FSSUM_PROG -A -f -w $tmp/1.fssum $SCRATCH_MNT/mysnap1
150 run_check $FSSUM_PROG -A -f -w $tmp/2.fssum -x $SCRATCH_MNT/mysnap2/mysnap1 \
153 _run_btrfs_util_prog send -f $tmp/1.snap $SCRATCH_MNT/mysnap1
154 _run_btrfs_util_prog send -f $tmp/2.snap -p $SCRATCH_MNT/mysnap1 \
158 _check_btrfs_filesystem $SCRATCH_DEV
159 _scratch_mkfs >/dev/null 2>&1
162 _run_btrfs_util_prog receive -f $tmp/1.snap $SCRATCH_MNT
163 run_check $FSSUM_PROG -r $tmp/1.fssum $SCRATCH_MNT/mysnap1 2>> $seqres.full
165 _run_btrfs_util_prog receive -f $tmp/2.snap $SCRATCH_MNT
166 run_check $FSSUM_PROG -r $tmp/2.fssum $SCRATCH_MNT/mysnap2 2>> $seqres.full
169 _check_btrfs_filesystem $SCRATCH_DEV