On Mon, Dec 06, 2021 at 04:40:40PM -0800, Darrick J. Wong wrote: > On Thu, Nov 25, 2021 at 03:47:49PM +0800, Shiyang Ruan wrote: > > Ensuring that copy on write in buffered mode works when the CoW > > range originally covers multiple extents, mixed with reflinked, unwritten, > > hole, regular and delalloc blocks. > > > > Signed-off-by: Shiyang Ruan <ruansy.fnst@xxxxxxxxxxx> > > Looks ok, ...with a _require_command $FILEFRAG_PROG filefrag added. (Serves me right for reviewing in backwards order.) --D > Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx> > > --D > > > --- > > tests/generic/912 | 67 +++++++++++++++++++++++++++++++++++++++++++ > > tests/generic/912.out | 12 ++++++++ > > 2 files changed, 79 insertions(+) > > create mode 100755 tests/generic/912 > > create mode 100644 tests/generic/912.out > > > > diff --git a/tests/generic/912 b/tests/generic/912 > > new file mode 100755 > > index 00000000..4f0d94dd > > --- /dev/null > > +++ b/tests/generic/912 > > @@ -0,0 +1,67 @@ > > +#! /bin/bash > > +# SPDX-License-Identifier: GPL-2.0 > > +# > > +# FS QA Test No. 912 > > +# > > +# Ensuring that copy on write in mmap mode works when the CoW > > +# range originally covers multiple extents, mixed with reflinked, unwritten, > > +# hole, regular and delalloc blocks. > > +# - Create a file with the following repeating sequence of blocks: > > +# 1. reflinked > > +# 2. unwritten > > +# 3. hole > > +# 4. regular block > > +# 5. delalloc > > +# - mmap CoW across the halfway mark, starting with the unwritten extent. > > +# - Check that the files are now different where we say they're different. > > +# > > +. ./common/preamble > > +_begin_fstest auto quick clone punch > > + > > +# Import common functions. > > +. ./common/filter > > +. ./common/reflink > > + > > +# real QA test starts here > > +_require_scratch_reflink > > +_require_xfs_io_command "falloc" > > +_require_xfs_io_command "fpunch" > > +_require_cp_reflink > > +_require_odirect > > + > > +echo "Format and mount" > > +_scratch_mkfs > $seqres.full 2>&1 > > +_scratch_mount >> $seqres.full 2>&1 > > + > > +testdir=$SCRATCH_MNT/test-$seq > > +mkdir $testdir > > + > > +echo "Create the original files" > > +blksz=65536 > > +nr=64 > > +filesize=$((blksz * nr)) > > +_sweave_reflink_rainbow $blksz $nr $testdir/file1 $testdir/file3 >> $seqres.full > > +_scratch_cycle_mount > > + > > +echo "Compare files" > > +md5sum $testdir/file1 | _filter_scratch > > +md5sum $testdir/file3 | _filter_scratch > > +md5sum $testdir/file1.chk | _filter_scratch > > + > > +echo "mmap CoW across the transition" > > +cowoff=$((filesize / 4)) > > +cowsz=$((filesize / 2)) > > +_sweave_reflink_rainbow_delalloc $blksz $nr $testdir/file1 >> $seqres.full > > +# now cow > > +mmapsz=$((cowoff + cowsz)) > > +_mwrite_byte 0x63 $cowoff $cowsz $mmapsz $testdir/file1 >> $seqres.full > > +_mwrite_byte 0x63 $cowoff $cowsz $mmapsz $testdir/file1.chk >> $seqres.full > > +_scratch_cycle_mount > > + > > +echo "Compare files" > > +md5sum $testdir/file1 | _filter_scratch > > +md5sum $testdir/file3 | _filter_scratch > > +md5sum $testdir/file1.chk | _filter_scratch > > + > > +# success, all done > > +status=0 > > diff --git a/tests/generic/912.out b/tests/generic/912.out > > new file mode 100644 > > index 00000000..32f25a1d > > --- /dev/null > > +++ b/tests/generic/912.out > > @@ -0,0 +1,12 @@ > > +QA output created by 912 > > +Format and mount > > +Create the original files > > +Compare files > > +6366fd359371414186688a0ef6988893 SCRATCH_MNT/test-912/file1 > > +bdbcf02ee0aa977795a79d25fcfdccb1 SCRATCH_MNT/test-912/file3 > > +6366fd359371414186688a0ef6988893 SCRATCH_MNT/test-912/file1.chk > > +mmap CoW across the transition > > +Compare files > > +26aa3a0749b867ec58363c8539ee5471 SCRATCH_MNT/test-912/file1 > > +bdbcf02ee0aa977795a79d25fcfdccb1 SCRATCH_MNT/test-912/file3 > > +26aa3a0749b867ec58363c8539ee5471 SCRATCH_MNT/test-912/file1.chk > > -- > > 2.34.0 > > > > > >
