tests/btrfs/254

   1 #! /bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (c) 2021 Anand Jain. All Rights Reserved.
   4 # Copyright (c) 2021 Oracle. All Rights Reserved.
   5 #
   6 # FS QA Test No. 254
   7 #
   8 # Test if the kernel can free the stale device entries.
   9 #
  10 # Tests bug fixed by the kernel patch:
  11 #       btrfs: harden identification of the stale device
  12 #
  13 . ./common/preamble
  14 _begin_fstest auto quick
  15
  16 # Override the default cleanup function.
  17 node=$seq-test
  18 cleanup_dmdev()
  19 {
  20         _dmsetup_remove $node
  21 }
  22
  23 _cleanup()
  24 {
  25         cd /
  26         rm -f $tmp.*
  27         rm -rf $seq_mnt > /dev/null 2>&1
  28         cleanup_dmdev
  29 }
  30
  31 # Import common functions.
  32 . ./common/filter
  33 . ./common/filter.btrfs
  34
  35 # real QA test starts here
  36 _supported_fs btrfs
  37 _require_scratch_dev_pool 3
  38 _require_block_device $SCRATCH_DEV
  39 _require_dm_target linear
  40 _require_btrfs_forget_or_module_loadable
  41 _require_scratch_nocheck
  42 _require_command "$WIPEFS_PROG" wipefs
  43
  44 _scratch_dev_pool_get 3
  45
  46 setup_dmdev()
  47 {
  48         # Some small size.
  49         size=$((1024 * 1024 * 1024))
  50         size_in_sector=$((size / 512))
  51
  52         table="0 $size_in_sector linear $SCRATCH_DEV 0"
  53         _dmsetup_create $node --table "$table" || \
  54                 _fail "setup dm device failed"
  55 }
  56
  57 # Use a known it is much easier to debug.
  58 uuid="--uuid 12345678-1234-1234-1234-123456789abc"
  59 lvdev=/dev/mapper/$node
  60
  61 seq_mnt=$TEST_DIR/$seq.mnt
  62 mkdir -p $seq_mnt
  63
  64 test_forget()
  65 {
  66         setup_dmdev
  67         dmdev=$(realpath $lvdev)
  68
  69         _mkfs_dev $uuid $dmdev
  70
  71         # Check if we can un-scan using the mapper device path.
  72         $BTRFS_UTIL_PROG device scan --forget $lvdev
  73
  74         # Cleanup
  75         $WIPEFS_PROG -a $lvdev > /dev/null 2>&1
  76         $BTRFS_UTIL_PROG device scan --forget
  77
  78         cleanup_dmdev
  79 }
  80
  81 test_add_device()
  82 {
  83         setup_dmdev
  84         dmdev=$(realpath $lvdev)
  85         scratch_dev2=$(echo $SCRATCH_DEV_POOL | awk '{print $2}')
  86         scratch_dev3=$(echo $SCRATCH_DEV_POOL | awk '{print $3}')
  87
  88         _mkfs_dev $scratch_dev3
  89         _mount $scratch_dev3 $seq_mnt
  90
  91         _mkfs_dev $uuid -draid1 -mraid1 $lvdev $scratch_dev2
  92
  93         # Add device should free the device under $uuid in the kernel.
  94         $BTRFS_UTIL_PROG device add -f $dmdev $seq_mnt > /dev/null 2>&1
  95
  96         _mount -o degraded $scratch_dev2 $SCRATCH_MNT
  97
  98         # Check if the missing device is shown.
  99         $BTRFS_UTIL_PROG filesystem show -m $SCRATCH_MNT | \
 100                                         _filter_btrfs_filesystem_show
 101
 102         $UMOUNT_PROG $seq_mnt
 103         _scratch_unmount
 104         cleanup_dmdev
 105 }
 106
 107 test_forget
 108 test_add_device
 109
 110 _scratch_dev_pool_put
 111
 112 status=0
 113 exit