| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2021 Chandan Babu R. All Rights Reserved. |
| # |
| # FS QA Test 529 |
| # |
| # Verify that XFS does not cause inode fork's extent count to overflow when |
| # adding a single extent while there's no possibility of splitting an existing |
| # mapping. |
| |
| seq=`basename $0` |
| seqres=$RESULT_DIR/$seq |
| echo "QA output created by $seq" |
| |
| here=`pwd` |
| tmp=/tmp/$$ |
| status=1 # failure is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| cd / |
| rm -f $tmp.* |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| . ./common/quota |
| . ./common/inject |
| . ./common/populate |
| |
| # remove previous $seqres.full before test |
| rm -f $seqres.full |
| |
| # real QA test starts here |
| |
| _supported_fs xfs |
| _require_scratch |
| _require_xfs_quota |
| _require_xfs_debug |
| _require_test_program "punch-alternating" |
| _require_xfs_io_command "falloc" |
| _require_xfs_io_error_injection "reduce_max_iextents" |
| _require_xfs_io_error_injection "bmap_alloc_minlen_extent" |
| |
| echo "Format and mount fs" |
| _scratch_mkfs_sized $((512 * 1024 * 1024)) >> $seqres.full |
| _scratch_mount -o uquota >> $seqres.full |
| |
| bsize=$(_get_file_block_size $SCRATCH_MNT) |
| |
| echo "* Delalloc to written extent conversion" |
| |
| testfile=$SCRATCH_MNT/testfile |
| |
| touch $testfile |
| |
| echo "Inject reduce_max_iextents error tag" |
| _scratch_inject_error reduce_max_iextents 1 |
| |
| nr_blks=$((15 * 2)) |
| |
| echo "Create fragmented file" |
| for i in $(seq 0 2 $((nr_blks - 1))); do |
| $XFS_IO_PROG -f -s -c "pwrite $((i * bsize)) $bsize" $testfile \ |
| >> $seqres.full 2>&1 |
| [[ $? != 0 ]] && break |
| done |
| |
| echo "Verify \$testfile's extent count" |
| |
| nextents=$(_xfs_get_fsxattr nextents $testfile) |
| if (( $nextents > 10 )); then |
| echo "Extent count overflow check failed: nextents = $nextents" |
| exit 1 |
| fi |
| |
| echo "Disable reduce_max_iextents error tag" |
| _scratch_inject_error reduce_max_iextents 0 |
| |
| rm $testfile |
| |
| echo "* Fallocate unwritten extents" |
| |
| touch $testfile |
| |
| echo "Inject reduce_max_iextents error tag" |
| _scratch_inject_error reduce_max_iextents 1 |
| |
| echo "Fallocate fragmented file" |
| for i in $(seq 0 2 $((nr_blks - 1))); do |
| $XFS_IO_PROG -f -c "falloc $((i * bsize)) $bsize" $testfile \ |
| >> $seqres.full 2>&1 |
| [[ $? != 0 ]] && break |
| done |
| |
| echo "Verify \$testfile's extent count" |
| |
| nextents=$(_xfs_get_fsxattr nextents $testfile) |
| if (( $nextents > 10 )); then |
| echo "Extent count overflow check failed: nextents = $nextents" |
| exit 1 |
| fi |
| |
| echo "Disable reduce_max_iextents error tag" |
| _scratch_inject_error reduce_max_iextents 0 |
| |
| rm $testfile |
| |
| echo "* Directio write" |
| |
| touch $testfile |
| |
| echo "Inject reduce_max_iextents error tag" |
| _scratch_inject_error reduce_max_iextents 1 |
| |
| echo "Create fragmented file via directio writes" |
| for i in $(seq 0 2 $((nr_blks - 1))); do |
| $XFS_IO_PROG -d -s -f -c "pwrite $((i * bsize)) $bsize" $testfile \ |
| >> $seqres.full 2>&1 |
| [[ $? != 0 ]] && break |
| done |
| |
| echo "Verify \$testfile's extent count" |
| |
| nextents=$(_xfs_get_fsxattr nextents $testfile) |
| if (( $nextents > 10 )); then |
| echo "Extent count overflow check failed: nextents = $nextents" |
| exit 1 |
| fi |
| |
| echo "Disable reduce_max_iextents error tag" |
| _scratch_inject_error reduce_max_iextents 0 |
| |
| rm $testfile |
| |
| # Check if XFS gracefully returns with an error code when we try to increase |
| # extent count of user quota inode beyond the pseudo max extent count limit. |
| echo "* Extend quota inodes" |
| |
| echo "Consume free space" |
| fillerdir=$SCRATCH_MNT/fillerdir |
| nr_free_blks=$(stat -f -c '%f' $SCRATCH_MNT) |
| nr_free_blks=$((nr_free_blks * 90 / 100)) |
| |
| _fill_fs $((bsize * nr_free_blks)) $fillerdir $bsize 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 |
| |
| nr_blks=20 |
| |
| # This is a rough calculation; It doesn't take block headers into |
| # consideration. |
| # gdb -batch vmlinux -ex 'print sizeof(struct xfs_dqblk)' |
| # $1 = 136 |
| nr_quotas_per_block=$((bsize / 136)) |
| nr_quotas=$((nr_quotas_per_block * nr_blks)) |
| |
| echo "Extend uquota file" |
| for i in $(seq 0 $nr_quotas_per_block $nr_quotas); do |
| chown $i $fillerdir >> $seqres.full 2>&1 |
| [[ $? != 0 ]] && break |
| done |
| |
| _scratch_unmount >> $seqres.full |
| |
| echo "Verify uquota inode's extent count" |
| uquotino=$(_scratch_xfs_get_metadata_field 'uquotino' 'sb 0') |
| |
| nextents=$(_scratch_get_iext_count $uquotino 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 |
| |
| # success, all done |
| status=0 |
| exit |