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, 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 > > >
