diff mbox series

[v2,02/16] generic: add mmap CoW test for regular&destination extents

Message ID 20211125074752.274176-3-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 works when the CoW range originally
covers multiple extents, some regular, some not.
(MMAP version of generic/197,196)

Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>
---
 tests/generic/901     | 59 +++++++++++++++++++++++++++++++++++++++++++
 tests/generic/901.out | 12 +++++++++
 2 files changed, 71 insertions(+)
 create mode 100755 tests/generic/901
 create mode 100644 tests/generic/901.out

Comments

Darrick J. Wong Dec. 11, 2021, 12:27 a.m. UTC | #1 
On Thu, Nov 25, 2021 at 03:47:38PM +0800, Shiyang Ruan wrote:
> Ensuring that copy on write in mmap mode works when the CoW range originally
> covers multiple extents, some regular, some not.
> (MMAP version of generic/197,196)
> 
> Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>

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

--D

> ---
>  tests/generic/901     | 59 +++++++++++++++++++++++++++++++++++++++++++
>  tests/generic/901.out | 12 +++++++++
>  2 files changed, 71 insertions(+)
>  create mode 100755 tests/generic/901
>  create mode 100644 tests/generic/901.out
> 
> diff --git a/tests/generic/901 b/tests/generic/901
> new file mode 100755
> index 00000000..b9f4fbc0
> --- /dev/null
> +++ b/tests/generic/901
> @@ -0,0 +1,59 @@
> +#! /bin/bash
> +# SPDX-License-Identifier: GPL-2.0
> +#
> +# FS QA Test No. 901
> +#
> +# Ensuring that copy on write in mmap mode works when the CoW
> +# range originally covers multiple extents, some regular, some not.
> +# (MMAP version of generic/197,196)
> +#   - Create two files.
> +#   - Reflink the odd blocks of the first file into the second file.
> +#   - 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
> +
> +# 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))
> +_weave_reflink_regular $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 $testdir/file3.chk | _filter_scratch
> +
> +echo "mmap CoW across the transition"
> +cowoff=$((filesize / 4))
> +cowsz=$((filesize / 2))
> +mmapsz=$((cowoff + cowsz))
> +_mwrite_byte 0x63 $cowoff $cowsz $mmapsz $testdir/file3 >> $seqres.full
> +_mwrite_byte 0x63 $cowoff $cowsz $mmapsz $testdir/file3.chk >> $seqres.full
> +_scratch_cycle_mount
> +
> +echo "Compare files"
> +md5sum $testdir/file1 | _filter_scratch
> +md5sum $testdir/file3 | _filter_scratch
> +md5sum $testdir/file3.chk | _filter_scratch
> +
> +# success, all done
> +status=0
> +exit
> diff --git a/tests/generic/901.out b/tests/generic/901.out
> new file mode 100644
> index 00000000..c3983e87
> --- /dev/null
> +++ b/tests/generic/901.out
> @@ -0,0 +1,12 @@
> +QA output created by 901
> +Format and mount
> +Create the original files
> +Compare files
> +bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-901/file1
> +d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-901/file3
> +d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-901/file3.chk
> +mmap CoW across the transition
> +Compare files
> +bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-901/file1
> +55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-901/file3
> +55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-901/file3.chk
> -- 
> 2.34.0
> 
> 
>
diff mbox series

Patch

diff --git a/tests/generic/901 b/tests/generic/901
new file mode 100755
index 00000000..b9f4fbc0
--- /dev/null
+++ b/tests/generic/901
@@ -0,0 +1,59 @@ 
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# FS QA Test No. 901
+#
+# Ensuring that copy on write in mmap mode works when the CoW
+# range originally covers multiple extents, some regular, some not.
+# (MMAP version of generic/197,196)
+#   - Create two files.
+#   - Reflink the odd blocks of the first file into the second file.
+#   - 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
+
+# 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))
+_weave_reflink_regular $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 $testdir/file3.chk | _filter_scratch
+
+echo "mmap CoW across the transition"
+cowoff=$((filesize / 4))
+cowsz=$((filesize / 2))
+mmapsz=$((cowoff + cowsz))
+_mwrite_byte 0x63 $cowoff $cowsz $mmapsz $testdir/file3 >> $seqres.full
+_mwrite_byte 0x63 $cowoff $cowsz $mmapsz $testdir/file3.chk >> $seqres.full
+_scratch_cycle_mount
+
+echo "Compare files"
+md5sum $testdir/file1 | _filter_scratch
+md5sum $testdir/file3 | _filter_scratch
+md5sum $testdir/file3.chk | _filter_scratch
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/901.out b/tests/generic/901.out
new file mode 100644
index 00000000..c3983e87
--- /dev/null
+++ b/tests/generic/901.out
@@ -0,0 +1,12 @@ 
+QA output created by 901
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-901/file1
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-901/file3
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-901/file3.chk
+mmap CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-901/file1
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-901/file3
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-901/file3.chk