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https://github.com/linux-apfs/apfstests.git
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Nikolay Borisov
3334128e4f
This test verifies btrfs' free objectid management. I.e it ensures that the first objectid is always 256 in an fs tree. Signed-off-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
84 lines
2.4 KiB
Bash
Executable File
84 lines
2.4 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2020 SUSE Linux Products GmbH. All Rights Reserved.
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#
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# FS QA Test 228
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#
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# Test correct operation of free objectid related functionality
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#
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -f $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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# remove previous $seqres.full before test
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rm -f $seqres.full
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# real QA test starts here
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# Modify as appropriate.
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_supported_fs btrfs
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_require_scratch
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_require_btrfs_command inspect-internal dump-tree
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_scratch_mkfs > /dev/null
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_scratch_mount
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# create a new subvolume to validate its objectid is initialized accordingly,
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# the expected value is 256 as this is the first free objectid in a new file
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# system
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$BTRFS_UTIL_PROG subvolume create $SCRATCH_MNT/newvol >> $seqres.full 2>&1 \
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|| _fail "couldn't create subvol"
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$BTRFS_UTIL_PROG inspect-internal dump-tree -t1 $SCRATCH_DEV \
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| grep -q "256 ROOT_ITEM" || _fail "First subvol with id 256 doesn't exist"
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# create new file in the new subvolume to validate its objectid is set as
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# expected
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touch $SCRATCH_MNT/newvol/file1 || _fail "Cannot create file in new subvol"
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# ensure we have consistent view on-disk
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sync
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# get output related to the new root's dir entry
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output_file=$tmp.output
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$BTRFS_UTIL_PROG inspect-internal dump-tree -t5 $SCRATCH_DEV | grep -A2 "256 DIR_ITEM 1903355334" > $output_file
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# get the objectid of the new root
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new_root_id=$($AWK_PROG '/location key/{printf $3}' $output_file | tr -d '(')
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[ $new_root_id -eq 256 ] || _fail "New root id not equal to 256"
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# the given root should always be item number 2, since it's the only item
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item_seq=$($AWK_PROG '/item/ {printf $2}' $output_file)
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[ $item_seq -eq 2 ] || _fail "New root not at item idx 2"
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# now parse the structure of the new subvol's tree
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$BTRFS_UTIL_PROG inspect-internal dump-tree -t256 $SCRATCH_DEV > $output_file
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# this is the subvol's own ino
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first_ino=$($AWK_PROG '/item 0/{printf $4}' $output_file | tr -d '(')
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[ $first_ino -eq 256 ] || _fail "First ino objectid in subvol not 256"
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# this is ino of first file in subvol
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second_ino=$($AWK_PROG '/item 4/{printf $4}' $output_file | tr -d '(')
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[ $second_ino -eq 257 ] || _fail "Second ino objectid in subvol not 257"
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# success, all done
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echo "Silence is golden"
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status=0
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exit
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