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 $tmp.*
  24 }
  25
  26 # get standard environment, filters and checks
  27 . ./common/rc
  28 . ./common/filter
  29
  30 # real QA test starts here
  31 _supported_fs btrfs
  32 _supported_os Linux
  33 _require_test
  34 _require_scratch
  35 _require_fssum
  36
  37 send_files_dir=$TEST_DIR/btrfs-test-$seq
  38
  39 rm -f $seqres.full
  40 rm -fr $send_files_dir
  41 mkdir $send_files_dir
  42
  43 _scratch_mkfs >>$seqres.full 2>&1
  44 _scratch_mount
  45
  46 mkdir $SCRATCH_MNT/a
  47 mkdir $SCRATCH_MNT/tmp
  48 mkdir $SCRATCH_MNT/del
  49 mv $SCRATCH_MNT/tmp $SCRATCH_MNT/del
  50 mkdir $SCRATCH_MNT/a/c
  51 mkdir $SCRATCH_MNT/del/x
  52
  53 # Filesystem looks like:
  54 #
  55 # .                                                             (ino 256)
  56 # |--- a/                                                       (ino 257)
  57 # |    |--- c/                                                  (ino 260)
  58 # |
  59 # |--- del/                                                     (ino 259)
  60 #       |--- tmp/                                               (ino 258)
  61 #       |--- x/                                                 (ino 261)
  62 #
  63 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
  64
  65 # When inode 260 was processed, rename operations for it and for inode 258 were
  66 # issued (the rename for inode 260 must happen before the rename for inode 258).
  67 # Then immediately after issuing the rename operation for inode 258, and before
  68 # inode 261 was processed, the send stream issued a rmdir operation for inode
  69 # 260, which would make the receiver fail with the error ENOTEMPTY because inode
  70 # 261 was not yet renamed, it was still a child of inode 260 at that time.
  71 #
  72 mv $SCRATCH_MNT/a/c $SCRATCH_MNT
  73 mv $SCRATCH_MNT/del/x $SCRATCH_MNT/a
  74 mv $SCRATCH_MNT/del/tmp $SCRATCH_MNT/c
  75 rmdir $SCRATCH_MNT/del
  76
  77 # Filesystem now looks like:
  78 #
  79 # .                                                             (ino 256)
  80 # |--- a/                                                       (ino 257)
  81 # |    |--- x/                                                  (ino 261)
  82 # |
  83 # |--- c/                                                       (ino 260)
  84 #      |--- tmp/                                                (ino 258)
  85 #
  86 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2
  87
  88 run_check $FSSUM_PROG -A -f -w $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
  89 run_check $FSSUM_PROG -A -f -w $send_files_dir/2.fssum \
  90         -x $SCRATCH_MNT/mysnap2/mysnap1 $SCRATCH_MNT/mysnap2
  91
  92 _run_btrfs_util_prog send -f $send_files_dir/1.snap $SCRATCH_MNT/mysnap1
  93 _run_btrfs_util_prog send -p $SCRATCH_MNT/mysnap1 -f $send_files_dir/2.snap \
  94         $SCRATCH_MNT/mysnap2
  95
  96 # Now recreate the filesystem by receiving both send streams and verify we get
  97 # the same content that the original filesystem had.
  98 _scratch_unmount
  99 _scratch_mkfs >>$seqres.full 2>&1
 100 _scratch_mount
 101
 102 _run_btrfs_util_prog receive -f $send_files_dir/1.snap $SCRATCH_MNT
 103 run_check $FSSUM_PROG -r $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
 104 _run_btrfs_util_prog receive -f $send_files_dir/2.snap $SCRATCH_MNT
 105 run_check $FSSUM_PROG -r $send_files_dir/2.fssum $SCRATCH_MNT/mysnap2
 106
 107 echo "Silence is golden"
 108 status=0
 109 exit