tests/xfs/495

   1 #! /bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (c) 2018 Oracle, Inc.  All Rights Reserved.
   4 #
   5 # FS QA Test No. 495
   6 #
   7 # Test for two related regressions -- first, check that repair doesn't
   8 # repeatedly rebuild directories with a single leafn block; and check that
   9 # repair also doesn't crash when it hits a corrupt da btree with a zero before
  10 # pointer.
  11 #
  12 . ./common/preamble
  13 _begin_fstest auto quick repair
  14
  15 _register_cleanup "_cleanup" BUS
  16
  17 # Import common functions.
  18 . ./common/filter
  19 . ./common/populate
  20 . ./common/fuzzy
  21
  22 # real QA test starts here
  23 _supported_fs xfs
  24 _require_scratch_nocheck
  25 _require_populate_commands
  26 _require_xfs_db_command "fuzz"
  27
  28 echo "Format and populate"
  29 _scratch_populate_cached nofill > $seqres.full 2>&1
  30
  31 filter_nbrepair() {
  32         grep rebuilding | sed -e 's/directory inode [0-9]*/directory inode XXX/g'
  33 }
  34
  35 run_repair() {
  36         _scratch_xfs_repair > $tmp.repair 2>&1
  37         cat $tmp.repair >> $seqres.full
  38         cat $tmp.repair | filter_nbrepair
  39 }
  40
  41 echo "Check leafn rebuilds"
  42 run_repair
  43 run_repair
  44
  45 echo "Fuzz nbtree[0].before to zero"
  46 _scratch_mount
  47 inum=$(stat -c '%i' $SCRATCH_MNT/S_IFDIR.FMT_NODE)
  48 blk_sz=$(_get_block_size $SCRATCH_MNT)
  49 _scratch_unmount
  50 leaf_offset=$(( (2 ** 35) / blk_sz ))
  51 _scratch_xfs_fuzz_metadata_field "nbtree[0].before" "zeroes" "inode ${inum}" \
  52                                  "dblock ${leaf_offset}" >> $seqres.full
  53
  54 echo "Check nbtree[0].before repair"
  55 run_repair
  56 run_repair
  57
  58 # success, all done
  59 echo Done
  60 status=0
  61 exit