tests/btrfs/128

   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/128
   6 #
   7 # Test that, under a particular scenario, an incremental send operation does
   8 # not leak memory (which used to emit a warning in dmesg/syslog).
   9 #
  10 . ./common/preamble
  11 _begin_fstest auto quick send
  12
  13 # Override the default cleanup function.
  14 _cleanup()
  15 {
  16         cd /
  17         rm -fr $send_files_dir
  18         rm -f $tmp.*
  19 }
  20
  21 # Import common functions.
  22 . ./common/filter
  23
  24 # real QA test starts here
  25 _supported_fs btrfs
  26 _require_test
  27 _require_scratch
  28 _require_fssum
  29
  30 send_files_dir=$TEST_DIR/btrfs-test-$seq
  31
  32 rm -fr $send_files_dir
  33 mkdir $send_files_dir
  34
  35 _scratch_mkfs >>$seqres.full 2>&1
  36 _scratch_mount
  37
  38 mkdir $SCRATCH_MNT/a
  39 mkdir $SCRATCH_MNT/tmp
  40 mkdir $SCRATCH_MNT/del
  41 mv $SCRATCH_MNT/tmp $SCRATCH_MNT/del
  42 mkdir $SCRATCH_MNT/a/c
  43 mkdir $SCRATCH_MNT/del/x
  44 mkdir $SCRATCH_MNT/del/y
  45
  46 # Filesystem looks like:
  47 #
  48 # .                                                             (ino 256)
  49 # |--- a/                                                       (ino 257)
  50 # |    |--- c/                                                  (ino 260)
  51 # |
  52 # |--- del/                                                     (ino 259)
  53 #       |--- tmp/                                               (ino 258)
  54 #       |--- x/                                                 (ino 261)
  55 #       |--- y/                                                 (ino 262)
  56 #
  57 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
  58
  59 # It used to be that when attempting to issue an rmdir operation for inode 259,
  60 # the kernel allocated an orphan_dir_info structure so that later after doing
  61 # the delayed rename operation for inode 258 (which happened once inode 260 was
  62 # renamed) it would check if it could finally issue a rmdir instruction for
  63 # inode 259. If it couldn't, it would not release the previously allocated
  64 # orphan_dir_info structure immediately. Instead it would only release it once
  65 # it finished the send stream and it would emit a warning in dmesg/syslog.
  66 #
  67 mv $SCRATCH_MNT/a/c $SCRATCH_MNT
  68 mv $SCRATCH_MNT/del/x $SCRATCH_MNT/a
  69 mv $SCRATCH_MNT/del/y $SCRATCH_MNT/a
  70 mv $SCRATCH_MNT/del/tmp $SCRATCH_MNT/c
  71 rmdir $SCRATCH_MNT/del
  72
  73 # Filesystem now looks like:
  74 #
  75 # .                                                             (ino 256)
  76 # |--- a/                                                       (ino 257)
  77 # |    |--- x/                                                  (ino 261)
  78 # |    |--- y/                                                  (ino 262)
  79 # |
  80 # |--- c/                                                       (ino 260)
  81 #      |--- tmp/                                                (ino 258)
  82 #
  83 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2
  84
  85 run_check $FSSUM_PROG -A -f -w $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
  86 run_check $FSSUM_PROG -A -f -w $send_files_dir/2.fssum \
  87         -x $SCRATCH_MNT/mysnap2/mysnap1 $SCRATCH_MNT/mysnap2
  88
  89 _run_btrfs_util_prog send -f $send_files_dir/1.snap $SCRATCH_MNT/mysnap1
  90 _run_btrfs_util_prog send -p $SCRATCH_MNT/mysnap1 -f $send_files_dir/2.snap \
  91         $SCRATCH_MNT/mysnap2
  92
  93 # Now recreate the filesystem by receiving both send streams and verify we get
  94 # the same content that the original filesystem had.
  95 _scratch_unmount
  96 _scratch_mkfs >>$seqres.full 2>&1
  97 _scratch_mount
  98
  99 _run_btrfs_util_prog receive -f $send_files_dir/1.snap $SCRATCH_MNT
 100 run_check $FSSUM_PROG -r $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
 101 _run_btrfs_util_prog receive -f $send_files_dir/2.snap $SCRATCH_MNT
 102 run_check $FSSUM_PROG -r $send_files_dir/2.fssum $SCRATCH_MNT/mysnap2
 103
 104 echo "Silence is golden"
 105 status=0
 106 exit