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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2021 Chandan Babu R. All Rights Reserved.
#
# FS QA Test 530
#
# Verify that XFS does not cause bitmap/summary inode fork's extent count to
# overflow when growing an the realtime volume of the filesystem.
#
. ./common/preamble
_begin_fstest auto quick realtime growfs
# Override the default cleanup function.
_cleanup()
{
cd /
_scratch_unmount >> $seqres.full 2>&1
test -e "$rtdev" && losetup -d $rtdev >> $seqres.full 2>&1
rm -f $tmp.* $TEST_DIR/$seq.rtvol
}
# Import common functions.
. ./common/filter
. ./common/inject
. ./common/populate
# real QA test starts here
_supported_fs xfs
# Note that we don't _require_realtime because we synthesize a rt volume
# below.
_require_test
_require_xfs_debug
_require_test_program "punch-alternating"
_require_xfs_io_error_injection "reduce_max_iextents"
_require_xfs_io_error_injection "bmap_alloc_minlen_extent"
_require_scratch_nocheck
echo "* Test extending rt inodes"
_scratch_mkfs | _filter_mkfs >> $seqres.full 2> $tmp.mkfs
. $tmp.mkfs
echo "Create fake rt volume"
nr_bitmap_blks=25
nr_bits=$((nr_bitmap_blks * dbsize * 8))
# Realtime extent size has to be atleast 4k in size.
if (( $dbsize < 4096 )); then
rtextsz=4096
else
rtextsz=$dbsize
fi
rtdevsz=$((nr_bits * rtextsz))
truncate -s $rtdevsz $TEST_DIR/$seq.rtvol
rtdev=$(_create_loop_device $TEST_DIR/$seq.rtvol)
echo "Format and mount rt volume"
export USE_EXTERNAL=yes
export SCRATCH_RTDEV=$rtdev
_scratch_mkfs -d size=$((1024 * 1024 * 1024)) \
-r size=${rtextsz},extsize=${rtextsz} >> $seqres.full
_try_scratch_mount || _notrun "Couldn't mount fs with synthetic rt volume"
# If we didn't get the desired realtime volume and the same blocksize as the
# first format (which we used to compute a specific rt geometry), skip the
# test. This can happen if the MKFS_OPTIONS conflict with the ones we passed
# to _scratch_mkfs or do not result in a valid rt fs geometry. In this case,
# _scratch_mkfs will try to "succeed" at formatting by dropping MKFS_OPTIONS,
# giving us the wrong geometry.
formatted_blksz="$(_get_block_size $SCRATCH_MNT)"
test "$formatted_blksz" -ne "$dbsize" && \
_notrun "Tried to format with $dbsize blocksize, got $formatted_blksz."
_require_xfs_has_feature "$SCRATCH_MNT" realtime
echo "Consume free space"
fillerdir=$SCRATCH_MNT/fillerdir
nr_free_blks=$(stat -f -c '%f' $SCRATCH_MNT)
nr_free_blks=$((nr_free_blks * 90 / 100))
_fill_fs $((dbsize * nr_free_blks)) $fillerdir $dbsize 0 >> $seqres.full 2>&1
echo "Create fragmented filesystem"
for dentry in $(ls -1 $fillerdir/); do
$here/src/punch-alternating $fillerdir/$dentry >> $seqres.full
done
echo "Inject reduce_max_iextents error tag"
_scratch_inject_error reduce_max_iextents 1
echo "Inject bmap_alloc_minlen_extent error tag"
_scratch_inject_error bmap_alloc_minlen_extent 1
echo "Grow realtime volume"
$XFS_GROWFS_PROG -r $SCRATCH_MNT >> $seqres.full 2>&1
if [[ $? == 0 ]]; then
echo "Growfs succeeded; should have failed."
exit 1
fi
_scratch_unmount >> $seqres.full
echo "Verify rbmino's and rsumino's extent count"
for rtino in rbmino rsumino; do
ino=$(_scratch_xfs_get_metadata_field $rtino "sb 0")
echo "$rtino = $ino" >> $seqres.full
nextents=$(_scratch_get_iext_count $ino data || \
_fail "Unable to obtain inode fork's extent count")
if (( $nextents > 10 )); then
echo "Extent count overflow check failed: nextents = $nextents"
exit 1
fi
done
echo "Check filesystem"
_check_scratch_fs
losetup -d $rtdev
rm -f $TEST_DIR/$seq.rtvol
# success, all done
status=0
exit
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