Re: [PATCH 2/3] xfs: add memory failure test for dax&reflink mode

["Darrick J. Wong" <djwong@kernel.org>]

On Fri, Mar 11, 2022 at 11:18:15PM +0800, Shiyang Ruan wrote:
> Verify that the dax-rmap feature works.
> 
> Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>

With the same 'posion' -> 'poison' fix applied,
Reviewed-by: Darrick J. Wong <djwong@kernel.org>

--D

> ---
>  tests/xfs/901     | 49 +++++++++++++++++++++++++++++++++++++++++++++++
>  tests/xfs/901.out |  9 +++++++++
>  2 files changed, 58 insertions(+)
>  create mode 100755 tests/xfs/901
>  create mode 100644 tests/xfs/901.out
> 
> diff --git a/tests/xfs/901 b/tests/xfs/901
> new file mode 100755
> index 00000000..a94a0c06
> --- /dev/null
> +++ b/tests/xfs/901
> @@ -0,0 +1,49 @@
> +#! /bin/bash
> +# SPDX-License-Identifier: GPL-2.0
> +#
> +# FS QA Test No. 901
> +#
> +# Test memory failure mechanism when dax and reflink working together
> +#
> +. ./common/preamble
> +_begin_fstest auto quick clone dax
> +
> +# Import common functions.
> +. ./common/filter
> +. ./common/reflink
> +
> +# real QA test starts here
> +_require_check_dmesg
> +_require_scratch_reflink
> +_require_cp_reflink
> +_require_xfs_scratch_rmapbt
> +_require_scratch_dax_mountopt "dax"
> +_require_test_program "t_mmap_cow_memory_failure"
> +
> +echo "Format and mount"
> +_scratch_mkfs > $seqres.full 2>&1
> +_scratch_mount "-o dax" >> $seqres.full 2>&1
> +
> +testdir=$SCRATCH_MNT/test-$seq
> +mkdir $testdir
> +
> +echo "Create the original files"
> +filesize=65536
> +_pwrite_byte 0x61 0 $filesize $testdir/testfile >> $seqres.full
> +_cp_reflink $testdir/testfile $testdir/posionfile >> $seqres.full
> +_scratch_cycle_mount "dax"
> +
> +echo "Inject memory failure (1 page)"
> +# create two processes:
> +#  process1: mread 4k to cause page fault, and wait
> +#  process2: mread 4k to cause page fault, then inject posion on this 4k page
> +$here/src/t_mmap_cow_memory_failure -s1 -S1 -R $testdir/testfile -P $testdir/posionfile
> +
> +echo "Inject memory failure (2 pages)"
> +$here/src/t_mmap_cow_memory_failure -s2 -S2 -R $testdir/testfile -P $testdir/posionfile
> +
> +_check_dmesg_for "Sending SIGBUS to t_mmap_cow_memo" || echo "Memory failure didn't kill the process"
> +_check_dmesg_for "recovery action for dax page: Recovered" || echo "Failured page didn't recovered"
> +
> +# success, all done
> +status=0
> diff --git a/tests/xfs/901.out b/tests/xfs/901.out
> new file mode 100644
> index 00000000..92d64846
> --- /dev/null
> +++ b/tests/xfs/901.out
> @@ -0,0 +1,9 @@
> +QA output created by 901
> +Format and mount
> +Create the original files
> +Inject memory failure (1 page)
> +Inject posion...
> +Process is killed by signal: 7
> +Inject memory failure (2 pages)
> +Inject posion...
> +Process is killed by signal: 7
> -- 
> 2.35.1
> 
> 
>