| Message ID | 20211125074752.274176-16-ruansy.fnst@fujitsu.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | generic: add some mmap CoW tests | expand |
On Thu, Nov 25, 2021 at 03:47:51PM +0800, Shiyang Ruan wrote: > 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> > --- > tests/generic/914 | 64 +++++++++++++++++++++++++++++++++++++++++++ > tests/generic/914.out | 4 +++ > 2 files changed, 68 insertions(+) > create mode 100755 tests/generic/914 > create mode 100644 tests/generic/914.out > > diff --git a/tests/generic/914 b/tests/generic/914 > new file mode 100755 > index 00000000..c51c44c7 > --- /dev/null > +++ b/tests/generic/914 > @@ -0,0 +1,64 @@ > +#! /bin/bash > +# SPDX-License-Identifier: GPL-2.0 > +# > +# FS QA Test No. 914 > +# > +# 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)" Just out of curiosity, did you notice any of the slow-writes effects that caused Dave to add throttling to generic/166? I'm kinda assuming no since he only changed the directio write tester, but <shrug> now you're the expert in this area. ;) In any case, looks correct to me, so Reviewed-by: Darrick J. Wong <djwong@kernel.org> --D > + 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/914.out b/tests/generic/914.out > new file mode 100644 > index 00000000..1472055f > --- /dev/null > +++ b/tests/generic/914.out > @@ -0,0 +1,4 @@ > +QA output created by 914 > +Format and mount > +Initialize file > +Snapshot a file undergoing mmap rewrite > -- > 2.34.0 > > >
diff --git a/tests/generic/914 b/tests/generic/914 new file mode 100755 index 00000000..c51c44c7 --- /dev/null +++ b/tests/generic/914 @@ -0,0 +1,64 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# FS QA Test No. 914 +# +# 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/914.out b/tests/generic/914.out new file mode 100644 index 00000000..1472055f --- /dev/null +++ b/tests/generic/914.out @@ -0,0 +1,4 @@ +QA output created by 914 +Format and mount +Initialize file +Snapshot a file undergoing mmap rewrite
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> --- tests/generic/914 | 64 +++++++++++++++++++++++++++++++++++++++++++ tests/generic/914.out | 4 +++ 2 files changed, 68 insertions(+) create mode 100755 tests/generic/914 create mode 100644 tests/generic/914.out