2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2011 Oracle All Rights Reserved.
5 # FS QA Test No. btrfs/002
7 # Extented btrfs snapshot test cases
10 _begin_fstest auto snapshot
12 # Import common functions.
18 _scratch_mkfs > /dev/null 2>&1 || _fail "mkfs failed"
21 # Create and save sha256sum
22 # arg1 FS to generate sha256
23 # arg2 File name to save the sha256 output
29 for i in `find . -type f`; do sha256sum $i >> $2; done
33 # Verify the sha256sum for a FS
34 # arg1 FS to be tested
39 [ -f $2 ] || _fail "checksum file $2 not found"
40 sha256sum -c $2 | grep "FAILED"
46 # Return snapshot name in the SNAPNAME
50 [ -d $1 ] || _fail "Destination dir $1 not present"
51 SNAPNAME=`mktemp -u $SCRATCH_MNT/snap.XXXXXX`
52 $BTRFS_UTIL_PROG subvolume snapshot $1 $SNAPNAME > /dev/null || _fail "snapshot create failed"
55 # Reads and writes new data but does not allocate new blocks
56 # arg1 FS to be modified
61 for i in `find $1 -type f`
63 FSIZE=`stat -t $i | cut -d" " -f2`
64 dd if=$i of=/dev/null obs=$FSIZE count=1 status=noxfer 2>/dev/null &
65 _ddt of=$i obs=$FSIZE count=1 status=noxfer 2>/dev/null &
70 # Fills the allocated blocks
80 for i in `find /$1 -type f`
82 FSIZE=`stat -t $i | cut -d" " -f2`
83 BLKS=`stat -c "%B" $i`
84 NBLK=`stat -c "%b" $i`
85 FALLOC=$(($BLKS * $NBLK))
86 WS=$(($FALLOC - $FSIZE))
87 _ddt of=$i oseek=$FSIZE obs=$WS count=1 status=noxfer 2>/dev/null &
92 # Append a random size to the files
93 # arg1 : FS in question
101 for i in `find $1 -type f`
105 FSIZE=`stat -t $X | cut -d" " -f2`
106 dd if=$X of=$X seek=1 bs=$FSIZE obs=$FSIZE count=1 status=noxfer 2>/dev/null &
110 FSIZE=`stat -t $i | cut -d" " -f2`
111 dd if=$X of=$i seek=1 bs=$FSIZE obs=$FSIZE count=1 status=noxfer 2>/dev/null &
117 ##################### real QA test starts here###################################
118 # sv1 - is just a name nothing spl
119 firstvol="$SCRATCH_MNT/sv1"
120 $BTRFS_UTIL_PROG subvolume create $firstvol > /dev/null || _fail "btrfs subvolume create $firstvol failed"
121 dirp=`mktemp -duq $firstvol/dir.XXXXXX`
122 _populate_fs -n 1 -f 20 -d 10 -r $dirp -s 10 -c
124 _create_snap $firstvol
125 _save_checksum $firstvol $tmp.sv1.sum
126 _verify_checksum $SNAPNAME $tmp.sv1.sum
130 _verify_checksum $firstvol $tmp.sv1.sum
133 _append_file $SNAPNAME
134 _verify_checksum $firstvol $tmp.sv1.sum
137 _read_modify_write $SNAPNAME
138 _verify_checksum $firstvol $tmp.sv1.sum
140 #nested snapshot test
142 for i in `seq 1 7`; do
144 _create_snap $src_vol
145 _verify_checksum $SNAPNAME $tmp.sv1.sum
151 _create_snap $firstvol
152 tname=`echo $SNAPNAME | rev | cut -d"/" -f1 | rev`
153 _save_checksum $SNAPNAME $tmp.$tname.sum
155 _verify_checksum $SNAPNAME $tmp.$tname.sum
157 _scratch_unmount || _fail "unmount failed"
159 echo "Silence is golden"