mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Darrick J. Wong
a860a167d8
fstests only supports Linux, so get rid of this unnecessary predicate. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
130 lines
3.8 KiB
Bash
Executable File
130 lines
3.8 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2019 Facebook. All Rights Reserved.
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#
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# FS QA Test 590
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#
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# Test commit 0c4da70c83d4 ("xfs: fix realtime file data space leak") and
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# 69ffe5960df1 ("xfs: don't check for AG deadlock for realtime files in
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# bunmapi"). On XFS without the fixes, truncate will hang forever. On other
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# filesystems, this just tests writing into big fallocates.
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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 $tmp.*
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test -n "$loop" && _destroy_loop_device "$loop"
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rm -f "$TEST_DIR/$seq"
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}
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. ./common/rc
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. ./common/filter
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rm -f $seqres.full
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_supported_fs generic
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_require_scratch_nocheck
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_require_xfs_io_command "falloc"
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maxextlen=$((0x1fffff))
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bs=4096
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rextsize=4
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filesz=$(((maxextlen + 1) * bs))
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must_disable_feature() {
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local feat="$1"
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# If mkfs doesn't know about the feature, we don't need to disable it
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$MKFS_XFS_PROG --help 2>&1 | grep -q "${feat}=0" || return 1
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# If turning the feature on works, we don't need to disable it
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_scratch_mkfs_xfs_supported -m "${feat}=1" "${disabled_features[@]}" \
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> /dev/null 2>&1 && return 1
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# Otherwise mkfs knows of the feature and formatting with it failed,
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# so we do need to mask it.
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return 0
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}
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extra_options=""
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# If we're testing XFS, set up the realtime device to reproduce the bug.
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if [[ $FSTYP = xfs ]]; then
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# If we don't have a realtime device, set up a loop device on the test
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# filesystem.
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if [[ $USE_EXTERNAL != yes || -z $SCRATCH_RTDEV ]]; then
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_require_test
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loopsz="$((filesz + (1 << 26)))"
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_require_fs_space "$TEST_DIR" $((loopsz / 1024))
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$XFS_IO_PROG -c "truncate $loopsz" -f "$TEST_DIR/$seq"
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loop="$(_create_loop_device "$TEST_DIR/$seq")"
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USE_EXTERNAL=yes
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SCRATCH_RTDEV="$loop"
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disabled_features=()
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# disable reflink if not supported by realtime devices
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must_disable_feature reflink &&
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disabled_features=(-m reflink=0)
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# disable rmap if not supported by realtime devices
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must_disable_feature rmapbt &&
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disabled_features+=(-m rmapbt=0)
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fi
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extra_options="$extra_options -r extsize=$((bs * rextsize))"
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extra_options="$extra_options -d agsize=$(((maxextlen + 1) * bs / 2)),rtinherit=1"
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_scratch_mkfs $extra_options "${disabled_features[@]}" >>$seqres.full 2>&1
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_try_scratch_mount >>$seqres.full 2>&1 || \
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_notrun "mount failed, kernel doesn't support realtime?"
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_scratch_unmount
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else
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_scratch_mkfs $extra_options >>$seqres.full 2>&1
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fi
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_scratch_mount
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_require_fs_space "$SCRATCH_MNT" $((filesz / 1024))
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# Allocate maxextlen + 1 blocks. As long as the allocator does something sane,
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# we should end up with two extents that look something like:
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#
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# u3.bmx[0-1] = [startoff,startblock,blockcount,extentflag]
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# 0:[0,0,2097148,1]
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# 1:[2097148,2097148,4,1]
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#
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# Extent 0 has blockcount = ALIGN_DOWN(maxextlen, rextsize). Extent 1 is
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# adjacent and has blockcount = rextsize. Both are unwritten.
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$XFS_IO_PROG -c "falloc 0 $filesz" -c fsync -f "$SCRATCH_MNT/file"
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# Write extent 0 + one block of extent 1. Our extents should end up like so:
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#
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# u3.bmx[0-1] = [startoff,startblock,blockcount,extentflag]
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# 0:[0,0,2097149,0]
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# 1:[2097149,2097149,3,1]
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#
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# Extent 0 is written and has blockcount = ALIGN_DOWN(maxextlen, rextsize) + 1,
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# Extent 1 is adjacent, unwritten, and has blockcount = rextsize - 1 and
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# startblock % rextsize = 1.
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#
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# The -b is just to speed things up (doing GBs of I/O in 4k chunks kind of
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# sucks).
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$XFS_IO_PROG -c "pwrite -b 1M -W 0 $(((maxextlen + 2 - rextsize) * bs))" \
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"$SCRATCH_MNT/file" >> "$seqres.full"
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# Truncate the extents.
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$XFS_IO_PROG -c "truncate 0" -c fsync "$SCRATCH_MNT/file"
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# We need to do this before the loop device gets torn down.
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_scratch_unmount
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_check_scratch_fs
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echo "Silence is golden"
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status=0
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exit
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