| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2016 Fujitsu. All Rights Reserved. |
| # |
| # FS QA Test 387 |
| # |
| # Create a heavily reflinked file, then check whether we can truncate |
| # it correctly. |
| # |
| . ./common/preamble |
| _begin_fstest auto clone |
| |
| # Import common functions. |
| . ./common/filter |
| . ./common/reflink |
| |
| # Modify as appropriate. |
| _supported_fs generic |
| _require_scratch_reflink |
| |
| #btrfs needs 256mb to create default blockgroup fs |
| _scratch_mkfs_sized $((256 * 1024 * 1024)) >> $seqres.full 2>&1 |
| _scratch_mount |
| |
| testfile=$SCRATCH_MNT/testfile |
| dummyfile=$SCRATCH_MNT/dummyfile |
| blocksize=$((128 * 1024)) |
| |
| # create a dummy file, which is used to occupy some fs space first. |
| _pwrite_byte 0xcdcdcdcd 0 $((1 * 1024 * 1024)) $dummyfile > /dev/null |
| _pwrite_byte 0xcdcdcdcd 0 $blocksize $testfile > /dev/null |
| |
| echo "Silence is golden" |
| for ((i = 0; i < 16384; i++)); do |
| _reflink_range $testfile 0 $testfile $(($i * $blocksize)) \ |
| $blocksize > /dev/null 2>&1 |
| done |
| |
| # consume all remaining free space |
| dd if=/dev/zero of=$SCRATCH_MNT/space >/dev/null 2>&1 |
| sync |
| |
| # fs is full now and fs internal operations may need some free space, for |
| # example, in btrfs, transaction will need to reserve space first, so here free |
| # 1MB space. |
| rm -f $dummyfile |
| $XFS_IO_PROG -f -c "truncate 0" $testfile |
| |
| status=0 |
| exit |
