diff mbox series

[v2,09/16] generic: add mmap CoW test for holes&source extents

Message ID 20211125074752.274176-10-ruansy.fnst@fujitsu.com (mailing list archive)
State New, archived
Headers show
Series generic: add some mmap CoW tests | expand

Commit Message

Shiyang Ruan Nov. 25, 2021, 7:47 a.m. UTC
Ensuring that copy on write in mmap mode to the source file when the CoW range
covers holes and regular shared blocks.
(MMAP version of generic/291,292)

Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>
---
 tests/generic/908     | 62 +++++++++++++++++++++++++++++++++++++++++++
 tests/generic/908.out | 12 +++++++++
 2 files changed, 74 insertions(+)
 create mode 100755 tests/generic/908
 create mode 100644 tests/generic/908.out

Comments

Darrick J. Wong Dec. 11, 2021, 12:40 a.m. UTC | #1
On Thu, Nov 25, 2021 at 03:47:45PM +0800, Shiyang Ruan wrote:
> Ensuring that copy on write in mmap mode to the source file when the CoW range
> covers holes and regular shared blocks.
> (MMAP version of generic/291,292)
> 
> Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>

Looks good, and thanks for mentioning which test each of these new ones
came from!

Reviewed-by: Darrick J. Wong <djwong@kernel.org>

--D

> ---
>  tests/generic/908     | 62 +++++++++++++++++++++++++++++++++++++++++++
>  tests/generic/908.out | 12 +++++++++
>  2 files changed, 74 insertions(+)
>  create mode 100755 tests/generic/908
>  create mode 100644 tests/generic/908.out
> 
> diff --git a/tests/generic/908 b/tests/generic/908
> new file mode 100755
> index 00000000..ad8de699
> --- /dev/null
> +++ b/tests/generic/908
> @@ -0,0 +1,62 @@
> +#! /bin/bash
> +# SPDX-License-Identifier: GPL-2.0
> +#
> +# FS QA Test No. 908
> +#
> +# Ensuring that copy on write in mmap mode to the source file when the
> +# CoW range covers holes and regular shared blocks.
> +# (MMAP version of generic/291,292)
> +#   - Create two files.
> +#   - Truncate the first file.
> +#   - Write the odd blocks of the first file.
> +#   - Reflink the odd blocks of the first file into the second file.
> +#   - mmap CoW the first file across the halfway mark, starting with the
> +#     regular extent.
> +#   - Check that the files are now different where we say they're different.
> +#
> +. ./common/preamble
> +_begin_fstest auto quick clone
> +
> +# Import common functions.
> +. ./common/filter
> +. ./common/reflink
> +
> +# real QA test starts here
> +_require_scratch_reflink
> +_require_xfs_io_command "falloc"
> +
> +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_holes $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=$((filesize / 2))
> +mmapsz=$((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
> +exit
> diff --git a/tests/generic/908.out b/tests/generic/908.out
> new file mode 100644
> index 00000000..c8c670ac
> --- /dev/null
> +++ b/tests/generic/908.out
> @@ -0,0 +1,12 @@
> +QA output created by 908
> +Format and mount
> +Create the original files
> +Compare files
> +b8a8a88d4c143f79900c4b4e79aa3e37  SCRATCH_MNT/test-908/file1
> +ce2023f765eba19677517c511886d5c9  SCRATCH_MNT/test-908/file3
> +b8a8a88d4c143f79900c4b4e79aa3e37  SCRATCH_MNT/test-908/file1.chk
> +mmap CoW across the transition
> +Compare files
> +e8cf59797f0b3758c8878c368bb4cf7e  SCRATCH_MNT/test-908/file1
> +ce2023f765eba19677517c511886d5c9  SCRATCH_MNT/test-908/file3
> +e8cf59797f0b3758c8878c368bb4cf7e  SCRATCH_MNT/test-908/file1.chk
> -- 
> 2.34.0
> 
> 
>
diff mbox series

Patch

diff --git a/tests/generic/908 b/tests/generic/908
new file mode 100755
index 00000000..ad8de699
--- /dev/null
+++ b/tests/generic/908
@@ -0,0 +1,62 @@ 
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# FS QA Test No. 908
+#
+# Ensuring that copy on write in mmap mode to the source file when the
+# CoW range covers holes and regular shared blocks.
+# (MMAP version of generic/291,292)
+#   - Create two files.
+#   - Truncate the first file.
+#   - Write the odd blocks of the first file.
+#   - Reflink the odd blocks of the first file into the second file.
+#   - mmap CoW the first file across the halfway mark, starting with the
+#     regular extent.
+#   - Check that the files are now different where we say they're different.
+#
+. ./common/preamble
+_begin_fstest auto quick clone
+
+# Import common functions.
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+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_holes $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=$((filesize / 2))
+mmapsz=$((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
+exit
diff --git a/tests/generic/908.out b/tests/generic/908.out
new file mode 100644
index 00000000..c8c670ac
--- /dev/null
+++ b/tests/generic/908.out
@@ -0,0 +1,12 @@ 
+QA output created by 908
+Format and mount
+Create the original files
+Compare files
+b8a8a88d4c143f79900c4b4e79aa3e37  SCRATCH_MNT/test-908/file1
+ce2023f765eba19677517c511886d5c9  SCRATCH_MNT/test-908/file3
+b8a8a88d4c143f79900c4b4e79aa3e37  SCRATCH_MNT/test-908/file1.chk
+mmap CoW across the transition
+Compare files
+e8cf59797f0b3758c8878c368bb4cf7e  SCRATCH_MNT/test-908/file1
+ce2023f765eba19677517c511886d5c9  SCRATCH_MNT/test-908/file3
+e8cf59797f0b3758c8878c368bb4cf7e  SCRATCH_MNT/test-908/file1.chk