tests/btrfs/084

   1 #! /bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (C) 2015 SUSE Linux Products GmbH. All Rights Reserved.
   4 #
   5 # FS QA Test No. btrfs/084
   6 #
   7 # Test for incremental send where the difference between the parent and send
   8 # snapshots is that for a subtree with the same path in both snapshots (p1/p2),
   9 # the root directories were swapped.
  10 #
  11 # This issue was fixed by the following linux kernel btrfs patch:
  12 #
  13 #   Btrfs: incremental send, clear name from cache after orphanization
  14 #
  15 . ./common/preamble
  16 _begin_fstest auto quick send
  17
  18 # Override the default cleanup function.
  19 _cleanup()
  20 {
  21         rm -fr $send_files_dir
  22         rm -f $tmp.*
  23 }
  24
  25 # Import common functions.
  26 . ./common/filter
  27
  28 # real QA test starts here
  29 _supported_fs btrfs
  30 _require_scratch
  31 _require_fssum
  32
  33 send_files_dir=$TEST_DIR/btrfs-test-$seq
  34
  35 rm -fr $send_files_dir
  36 mkdir $send_files_dir
  37
  38 _scratch_mkfs >>$seqres.full 2>&1
  39 _scratch_mount
  40
  41 mkdir -p $SCRATCH_MNT/data/n1/n2/p1/p2
  42 mkdir $SCRATCH_MNT/data/n4
  43 mkdir -p $SCRATCH_MNT/data/p1/p2
  44
  45 # Filesystem looks like:
  46 #
  47 # .                                       (ino 256)
  48 # |---- data                              (ino 257)
  49 #         |---- n1/                       (ino 258)
  50 #         |     |---- n2/                 (ino 259)
  51 #         |           |---- p1/           (ino 260)
  52 #         |                 |---- p2/     (ino 261)
  53 #         |
  54 #         |---- n4/                       (ino 262)
  55 #         |---- p1/                       (ino 263)
  56 #               |---- p2/                 (ino 264)
  57 #
  58 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
  59
  60 # Now move directories around such that for the subtrees with the path "p1/p2"
  61 # we end up swapping the parents, that is, inode 263 becomes the parent of
  62 # inode 261 and inode 260 becomes the parent of inode 264. This makes the send
  63 # stream orphanize the inodes 263 and 264, and we want to verify the respective
  64 # rename operations don't fail, that they don't use incorrect paths.
  65 mv $SCRATCH_MNT/data/p1/p2 $SCRATCH_MNT/data
  66 mv $SCRATCH_MNT/data/n1/n2/p1/p2 $SCRATCH_MNT/data/p1
  67 mv $SCRATCH_MNT/data/p2 $SCRATCH_MNT/data/n1/n2/p1
  68 mv $SCRATCH_MNT/data/n1/n2 $SCRATCH_MNT/data/p1
  69 mv $SCRATCH_MNT/data/p1 $SCRATCH_MNT/data/n4
  70 mv $SCRATCH_MNT/data/n4/p1/n2/p1 $SCRATCH_MNT/data
  71
  72 # Filesystem now looks like:
  73 #
  74 # .                                       (ino 256)
  75 # |---- data                              (ino 257)
  76 #         |---- n1/                       (ino 258)
  77 #         |---- n4/                       (ino 262)
  78 #         |     |---- p1/                 (ino 263)
  79 #         |           |---- n2/           (ino 259)
  80 #         |           |---- p2/           (ino 261)
  81 #         |
  82 #         |---- p1/                       (ino 260)
  83 #               |---- p2/                 (ino 264)
  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