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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2022 Fujitsu Limited. All Rights Reserved.
#
# FS QA Test No. 551
#
# 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/poisonfile >> $seqres.full
_scratch_cycle_mount "dax"
echo "Inject memory failure (1 page)"
# create two processes:
# process1: mread 1 page to cause page fault, and wait
# process2: mread 1 page to cause page fault, then inject poison on this page
$here/src/t_mmap_cow_memory_failure -s1 -S1 -R $testdir/testfile -P $testdir/poisonfile
echo "Inject memory failure (2 pages)"
$here/src/t_mmap_cow_memory_failure -s2 -S2 -R $testdir/testfile -P $testdir/poisonfile
_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
exit
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