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| author | Shiyang Ruan <ruansy.fnst@fujitsu.com> | 2021-12-14 16:19:13 +0800 |
|---|---|---|
| committer | Eryu Guan <guaneryu@gmail.com> | 2021-12-25 21:32:18 +0800 |
| commit | 6a809094d23258efc870b900a6ed2a96beaf9855 (patch) | |
| tree | 010ba71be94c9bd2d376f474ec674f982614c56b | |
| parent | a2ba26e1ac18bd6e3cab04c7c86eb0d5d2bb3993 (diff) | |
| download | xfstests-dev-6a809094d23258efc870b900a6ed2a96beaf9855.tar.gz | |
generic: add race test that mmap write to source of reflink
Test for races or FS corruption when mmap writing to a file that's
also the source of a reflink operation. (MMAP version of generic/167,
166)
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/671 | 64 | ||||
| -rw-r--r-- | tests/generic/671.out | 4 |
2 files changed, 68 insertions, 0 deletions
diff --git a/tests/generic/671 b/tests/generic/671 new file mode 100755 index 0000000000..b6cc0573f3 --- /dev/null +++ b/tests/generic/671 @@ -0,0 +1,64 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# FS QA Test No. 671 +# +# Test for races or FS corruption when mmap writing to a file that's also +# the source of a reflink operation. (MMAP version of generic/167,166) +# +. ./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 +_require_cp_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 file" +echo >> $seqres.full +_pwrite_byte 0x61 0 $((loops * blksz)) $testdir/file1 >> $seqres.full +_scratch_cycle_mount + +# Snapshot creator... +snappy() { + n=0 + while [ ! -e $finished_file ]; do + out="$(_cp_reflink $testdir/file1 $testdir/snap_$n 2>&1)" + res=$? + echo "$out" | grep -q "No space left" && break + test -n "$out" && echo "$out" + test $res -ne 0 && break + n=$((n + 1)) + done +} + +echo "Snapshot a file undergoing mmap rewrite" +snappy & +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/file1 >> $seqres.full +done +touch $finished_file +wait + +# success, all done +status=0 +exit diff --git a/tests/generic/671.out b/tests/generic/671.out new file mode 100644 index 0000000000..9bf89a2a56 --- /dev/null +++ b/tests/generic/671.out @@ -0,0 +1,4 @@ +QA output created by 671 +Format and mount +Initialize file +Snapshot a file undergoing mmap rewrite |