2 # FS QA Test No. btrfs/030
4 # Regression test for btrfs' incremental send feature:
6 # 1) Create several nested directories;
7 # 2) Create a read only snapshot;
8 # 3) Change the parentship of some of the deepest directories in a reverse
9 # way, so that parents become children and children become parents;
10 # 4) Create another read only snapshot and use it for an incremental send
11 # relative to the first snapshot.
13 # At step 4 btrfs' send entered an infinite loop, increasing the memory it
14 # used while building path strings until a krealloc was unable to allocate
15 # more memory, which caused a warning dump in dmesg.
17 #-----------------------------------------------------------------------
18 # Copyright (c) 2014 Filipe Manana. All Rights Reserved.
20 # This program is free software; you can redistribute it and/or
21 # modify it under the terms of the GNU General Public License as
22 # published by the Free Software Foundation.
24 # This program is distributed in the hope that it would be useful,
25 # but WITHOUT ANY WARRANTY; without even the implied warranty of
26 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27 # GNU General Public License for more details.
29 # You should have received a copy of the GNU General Public License
30 # along with this program; if not, write the Free Software Foundation,
31 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
32 #-----------------------------------------------------------------------
36 seqres=$RESULT_DIR/$seq
37 echo "QA output created by $seq"
41 status=1 # failure is the default!
42 trap "_cleanup; exit \$status" 0 1 2 3 15
49 # get standard environment, filters and checks
53 # real QA test starts here
59 FSSUM_PROG=$here/src/fssum
60 [ -x $FSSUM_PROG ] || _notrun "fssum not built"
64 _scratch_mkfs >/dev/null 2>&1
68 mkdir -p $SCRATCH_MNT/a/b/c
69 echo "hello" > $SCRATCH_MNT/a/b/c/file.txt
70 mkdir $SCRATCH_MNT/a/b/c/d
71 mkdir $SCRATCH_MNT/a/b/c2
72 mkdir $SCRATCH_MNT/a/b/www
73 echo "hey" > $SCRATCH_MNT/a/b/foobar.txt
74 mkdir -p $SCRATCH_MNT/a/b/c3/x/y
76 mkdir -p $SCRATCH_MNT/a/b/foo1/foo2
77 echo "hey" > $SCRATCH_MNT/a/b/foo1/foo2/f.txt
78 mkdir $SCRATCH_MNT/a/b/foo3
80 mkdir -p $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4
81 echo "ola" > $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello.txt
83 # Directory tree looks like:
89 # | |-- file.txt (ino 260)
94 # |-- foobar.txt (ino 264)
100 # |-- foo1/ (ino 268)
101 # | |---foo2/ (ino 269)
102 # | |---f.txt (ino 270)
104 # |-- foo3/ (ino 271)
106 # |-- bar1/ (ino 272)
107 # |-- bar2/ (ino 273)
108 # |-- bar3/ (ino 274)
110 # |--hello.txt (ino 276)
112 run_check $BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \
115 echo " world" >> $SCRATCH_MNT/a/b/c/file.txt
116 mv $SCRATCH_MNT/a/b/c/d $SCRATCH_MNT/a/b/c2/d2
117 mv $SCRATCH_MNT/a/b/c $SCRATCH_MNT/a/b/c2/d2/cc
118 mv $SCRATCH_MNT/a/b/c3/x/y $SCRATCH_MNT/a/b/c2/y2
119 mv $SCRATCH_MNT/a/b/c3/x $SCRATCH_MNT/a/b/c2/y2/x2
120 mv $SCRATCH_MNT/a/b/c3 $SCRATCH_MNT/a/b/c2/y2/x2/Z
121 mv $SCRATCH_MNT/a/b/www $SCRATCH_MNT/a/b/c2/y2/x2/WWW
122 mv $SCRATCH_MNT/a/b/foobar.txt $SCRATCH_MNT/a/b/c2/y2/x2/qwerty.txt
123 ln $SCRATCH_MNT/a/b/c2/d2/cc/file.txt $SCRATCH_MNT/a/b/c2/y2/x2/Z/file_link.txt
124 mv $SCRATCH_MNT/a/b/c2/d2/cc/file.txt $SCRATCH_MNT/a/b/c2/y2/x2
126 mv $SCRATCH_MNT/a/b/foo3 $SCRATCH_MNT/a/b/foo1/foo33
127 mv $SCRATCH_MNT/a/b/foo1/foo2 $SCRATCH_MNT/a/b/foo1/foo33/foo22
128 mv $SCRATCH_MNT/a/b/foo1/foo33/foo22/f.txt \
129 $SCRATCH_MNT/a/b/foo1/foo33/foo22/fff.txt
131 echo " hello" >> $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello.txt
132 mv $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello.txt \
133 $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello2.txt
134 mv $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4 $SCRATCH_MNT/a/b/k44
135 mv $SCRATCH_MNT/a/b/bar1/bar2/bar3 $SCRATCH_MNT/a/b/k44
136 mv $SCRATCH_MNT/a/b/bar1/bar2 $SCRATCH_MNT/a/b/k44/bar3
137 mv $SCRATCH_MNT/a/b/bar1 $SCRATCH_MNT/a/b/k44/bar3/bar2/k11
139 # Directory tree now looks like:
145 # | |-- d2/ (ino 261)
146 # | | |-- cc/ (ino 259)
148 # | |-- y2/ (ino 267)
149 # | |-- x2/ (ino 266)
150 # | |-- file.txt (ino 260)
151 # | |-- qwerty.txt (ino 264)
152 # | |-- WWW/ (ino 263)
154 # | |-- file_link.txt
156 # |-- foo1/ (ino 268)
157 # | |---foo33/ (ino 271)
158 # | |---foo22/ (ino 269)
159 # | |---fff.txt (ino 270)
162 # |-- hello2.txt (ino 276)
163 # |-- bar3/ (ino 274)
164 # |-- bar2/ (ino 273)
167 run_check $BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \
170 run_check $FSSUM_PROG -A -f -w $tmp/1.fssum $SCRATCH_MNT/mysnap1
171 run_check $FSSUM_PROG -A -f -w $tmp/2.fssum -x $SCRATCH_MNT/mysnap2/mysnap1 \
174 run_check $BTRFS_UTIL_PROG send $SCRATCH_MNT/mysnap1 -f $tmp/1.snap
175 run_check $BTRFS_UTIL_PROG send -p $SCRATCH_MNT/mysnap1 $SCRATCH_MNT/mysnap2 \
179 _check_btrfs_filesystem $SCRATCH_DEV
180 _scratch_mkfs >/dev/null 2>&1
183 run_check $BTRFS_UTIL_PROG receive $SCRATCH_MNT -f $tmp/1.snap
184 run_check $FSSUM_PROG -r $tmp/1.fssum $SCRATCH_MNT/mysnap1 2>> $seqres.full
186 run_check $BTRFS_UTIL_PROG receive $SCRATCH_MNT -f $tmp/2.snap
187 run_check $FSSUM_PROG -r $tmp/2.fssum $SCRATCH_MNT/mysnap2 2>> $seqres.full
190 _check_btrfs_filesystem $SCRATCH_DEV