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| author | Shiyang Ruan <ruansy.fnst@fujitsu.com> | 2021-12-14 16:19:14 +0800 |
|---|---|---|
| committer | Eryu Guan <guaneryu@gmail.com> | 2021-12-25 21:33:22 +0800 |
| commit | 2daa91f1b59927ca71c500e749097324c6362908 (patch) | |
| tree | 815e1f64f689bf0ccdd32423b731e6da26fde57d | |
| parent | 6a809094d23258efc870b900a6ed2a96beaf9855 (diff) | |
| download | xfstests-dev-2daa91f1b59927ca71c500e749097324c6362908.tar.gz | |
generic: add race test that mmap write to target of reflink
Test for races or FS corruption when mmap writing to a file that's also
the target of a reflink operation. (MMAP version of generic/168,170)
Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
| -rwxr-xr-x | tests/generic/672 | 64 | ||||
| -rw-r--r-- | tests/generic/672.out | 4 |
2 files changed, 68 insertions, 0 deletions
diff --git a/tests/generic/672 b/tests/generic/672 new file mode 100755 index 0000000000..9e3a97ec5e --- /dev/null +++ b/tests/generic/672 @@ -0,0 +1,64 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# FS QA Test No. 672 +# +# Test for races or FS corruption when mmap writing to a file that's also +# the target of a reflink operation. (MMAP version of generic/168,170) +# +. ./common/preamble +_begin_fstest auto clone + +_register_cleanup "_cleanup" BUS + +# Import common functions. +. ./common/filter +. ./common/reflink + +# real QA test starts here +_require_scratch_reflink + +echo "Format and mount" +_scratch_mkfs > $seqres.full 2>&1 +_scratch_mount >> $seqres.full 2>&1 + +testdir=$SCRATCH_MNT/test-$seq +finished_file=/tmp/finished +rm -rf $finished_file +mkdir $testdir + +loops=1024 +nr_loops=$((loops - 1)) +blksz=65536 + +echo "Initialize files" +echo >> $seqres.full +_pwrite_byte 0x61 0 $((loops * blksz)) $testdir/file1 >> $seqres.full +_pwrite_byte 0x62 0 $((loops * blksz)) $testdir/file2 >> $seqres.full +_scratch_cycle_mount + +# mmap overwriter... +overwrite() { + while [ ! -e $finished_file ]; do + seq $nr_loops -1 0 | while read i; do + $XFS_IO_PROG -f -c "mmap -rw $((i * blksz)) $blksz" \ + -c "mwrite -S 0x63 $((i * blksz)) $blksz" $testdir/file2 >> $seqres.full + done + done +} + +echo "Reflink and mmap write the target" +overwrite & +seq 1 10 | while read j; do + seq 0 $nr_loops | while read i; do + _reflink_range $testdir/file1 $((i * blksz)) \ + $testdir/file2 $((i * blksz)) $blksz >> $seqres.full + [ $? -ne 0 ] && exit + done +done +touch $finished_file +wait + +# success, all done +status=0 +exit diff --git a/tests/generic/672.out b/tests/generic/672.out new file mode 100644 index 0000000000..e0f8b7909b --- /dev/null +++ b/tests/generic/672.out @@ -0,0 +1,4 @@ +QA output created by 672 +Format and mount +Initialize files +Reflink and mmap write the target |