tests/btrfs/129

   1 #! /bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (C) 2016 SUSE Linux Products GmbH. All Rights Reserved.
   4 #
   5 # FS QA Test No. btrfs/129
   6 #
   7 # Test that an incremental send operation does not prematurely issues rmdir
   8 # operations under a particular scenario (the rmdir operation is sent before
   9 # the target directory is empty).
  10 #
  11 seq=`basename $0`
  12 seqres=$RESULT_DIR/$seq
  13 echo "QA output created by $seq"
  14
  15 tmp=/tmp/$$
  16 status=1        # failure is the default!
  17 trap "_cleanup; exit \$status" 0 1 2 3 15
  18
  19 _cleanup()
  20 {
  21         cd /
  22         rm -fr $send_files_dir
  23         rm -f $tmp.*
  24 }
  25
  26 # get standard environment, filters and checks
  27 . ./common/rc
  28 . ./common/filter
  29
  30 # real QA test starts here
  31 _supported_fs btrfs
  32 _require_test
  33 _require_scratch
  34 _require_fssum
  35
  36 send_files_dir=$TEST_DIR/btrfs-test-$seq
  37
  38 rm -f $seqres.full
  39 rm -fr $send_files_dir
  40 mkdir $send_files_dir
  41
  42 _scratch_mkfs >>$seqres.full 2>&1
  43 _scratch_mount
  44
  45 mkdir $SCRATCH_MNT/a
  46 mkdir $SCRATCH_MNT/tmp
  47 mkdir $SCRATCH_MNT/del
  48 mv $SCRATCH_MNT/tmp $SCRATCH_MNT/del
  49 mkdir $SCRATCH_MNT/a/c
  50 mkdir $SCRATCH_MNT/del/x
  51
  52 # Filesystem looks like:
  53 #
  54 # .                                                             (ino 256)
  55 # |--- a/                                                       (ino 257)
  56 # |    |--- c/                                                  (ino 260)
  57 # |
  58 # |--- del/                                                     (ino 259)
  59 #       |--- tmp/                                               (ino 258)
  60 #       |--- x/                                                 (ino 261)
  61 #
  62 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
  63
  64 # When inode 260 was processed, rename operations for it and for inode 258 were
  65 # issued (the rename for inode 260 must happen before the rename for inode 258).
  66 # Then immediately after issuing the rename operation for inode 258, and before
  67 # inode 261 was processed, the send stream issued a rmdir operation for inode
  68 # 260, which would make the receiver fail with the error ENOTEMPTY because inode
  69 # 261 was not yet renamed, it was still a child of inode 260 at that time.
  70 #
  71 mv $SCRATCH_MNT/a/c $SCRATCH_MNT
  72 mv $SCRATCH_MNT/del/x $SCRATCH_MNT/a
  73 mv $SCRATCH_MNT/del/tmp $SCRATCH_MNT/c
  74 rmdir $SCRATCH_MNT/del
  75
  76 # Filesystem now looks like:
  77 #
  78 # .                                                             (ino 256)
  79 # |--- a/                                                       (ino 257)
  80 # |    |--- x/                                                  (ino 261)
  81 # |
  82 # |--- c/                                                       (ino 260)
  83 #      |--- tmp/                                                (ino 258)
  84 #
  85 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2
  86
  87 run_check $FSSUM_PROG -A -f -w $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
  88 run_check $FSSUM_PROG -A -f -w $send_files_dir/2.fssum \
  89         -x $SCRATCH_MNT/mysnap2/mysnap1 $SCRATCH_MNT/mysnap2
  90
  91 _run_btrfs_util_prog send -f $send_files_dir/1.snap $SCRATCH_MNT/mysnap1
  92 _run_btrfs_util_prog send -p $SCRATCH_MNT/mysnap1 -f $send_files_dir/2.snap \
  93         $SCRATCH_MNT/mysnap2
  94
  95 # Now recreate the filesystem by receiving both send streams and verify we get
  96 # the same content that the original filesystem had.
  97 _scratch_unmount
  98 _scratch_mkfs >>$seqres.full 2>&1
  99 _scratch_mount
 100
 101 _run_btrfs_util_prog receive -f $send_files_dir/1.snap $SCRATCH_MNT
 102 run_check $FSSUM_PROG -r $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
 103 _run_btrfs_util_prog receive -f $send_files_dir/2.snap $SCRATCH_MNT
 104 run_check $FSSUM_PROG -r $send_files_dir/2.fssum $SCRATCH_MNT/mysnap2
 105
 106 echo "Silence is golden"
 107 status=0
 108 exit