2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2014 Filipe Manana. All Rights Reserved.
5 # FS QA Test No. btrfs/053
7 # Verify that btrfs send is able to replicate xattrs larger than PATH_MAX.
8 # This is possible if the b+tree leaf size is larger than 4Kb (mkfs.btrfs's
9 # default is max(16Kb, PAGE_SIZE) as of btrfs-progs v3.12, and max(4Kb,
10 # PAGE_SIZE in older versions).
12 # This issue is fixed by the following linux kernel btrfs patch:
14 # Btrfs: send, use the right limits for xattr names and values
17 seqres=$RESULT_DIR/$seq
18 echo "QA output created by $seq"
21 status=1 # failure is the default!
22 trap "_cleanup; exit \$status" 0 1 2 3 15
26 rm -fr $send_files_dir
30 # get standard environment, filters and checks
35 # real QA test starts here
43 # max(16384, PAGE_SIZE) is the default leaf/node size on btrfs-progs v3.12+.
44 # Older versions just use max(4096, PAGE_SIZE).
45 # mkfs.btrfs can't create an fs with a leaf/node size smaller than PAGE_SIZE.
46 leaf_size=$(echo -e "16384\n`getconf PAGE_SIZE`" | sort -nr | head -1)
48 send_files_dir=$TEST_DIR/btrfs-test-$seq
51 rm -fr $send_files_dir
54 _scratch_mkfs "-l $leaf_size" >/dev/null 2>&1
57 echo "hello world" > $SCRATCH_MNT/foobar
59 $SETFATTR_PROG -n user.xattr_name_1 -v `$PERL_PROG -e 'print "A" x 6000;'` \
62 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
63 run_check $FSSUM_PROG -A -f -w $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
65 # Update existing xattr value and add a new xattr too.
66 $SETFATTR_PROG -n user.xattr_name_1 -v `$PERL_PROG -e 'print "Z" x 6666;'` \
68 $SETFATTR_PROG -n user.xattr_name_2 -v `$PERL_PROG -e 'print "U" x 5555;'` \
71 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2
72 run_check $FSSUM_PROG -A -f -w $send_files_dir/2.fssum \
73 -x $SCRATCH_MNT/mysnap2/mysnap1 $SCRATCH_MNT/mysnap2
75 _run_btrfs_util_prog send -f $send_files_dir/1.snap $SCRATCH_MNT/mysnap1
76 _run_btrfs_util_prog send -p $SCRATCH_MNT/mysnap1 -f $send_files_dir/2.snap \
82 _scratch_mkfs "-l $leaf_size" >/dev/null 2>&1
85 _run_btrfs_util_prog receive -f $send_files_dir/1.snap $SCRATCH_MNT
86 run_check $FSSUM_PROG -r $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
88 _run_btrfs_util_prog receive -f $send_files_dir/2.snap $SCRATCH_MNT
89 run_check $FSSUM_PROG -r $send_files_dir/2.fssum $SCRATCH_MNT/mysnap2