88 lines
1.7 KiB
Text
88 lines
1.7 KiB
Text
devs="$dev0 $dev1 $dev2 $dev3"
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runtime=120
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pid=""
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action_pid=""
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set_up_injection()
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{
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echo -1 > /sys/kernel/debug/fail_make_request/times
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echo 1 > /sys/kernel/debug/fail_make_request/probability
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echo 0 > /sys/kernel/debug/fail_make_request/verbose
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echo 1 > /sys/block/${1##*/}/make-it-fail
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}
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clean_up_injection()
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{
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echo 0 > /sys/block/${1##*/}/make-it-fail
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echo 0 > /sys/kernel/debug/fail_make_request/times
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echo 0 > /sys/kernel/debug/fail_make_request/probability
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echo 2 > /sys/kernel/debug/fail_make_request/verbose
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}
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test_rdev()
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{
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while true; do
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mdadm -f $md0 $1 &> /dev/null
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mdadm -r $md0 $1 &> /dev/null
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mdadm --zero-superblock $1 &> /dev/null
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mdadm -a $md0 $1 &> /dev/null
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sleep $2
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done
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}
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test_write_action()
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{
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while true; do
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echo frozen > /sys/block/md0/md/sync_action
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echo idle > /sys/block/md0/md/sync_action
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sleep 0.1
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done
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}
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set_up_test()
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{
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fio -h &> /dev/null || die "fio not found"
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# create a simple raid10
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mdadm -Cv -R -n 4 -l10 $md0 $devs || die "create raid10 failed"
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}
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clean_up_test()
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{
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clean_up_injection $dev0
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pkill -9 fio
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kill -9 $pid
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kill -9 $action_pid
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sleep 2
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if ps $action_pid | tail -1 | awk '{print $3}' | grep D; then
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die "thread that is writing sysfs is stuck in D state, deadlock is triggered"
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fi
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mdadm -S $md0
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}
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cat /sys/kernel/debug/fail_make_request/times || skip "fault injection is not enabled"
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trap 'clean_up_test' EXIT
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set_up_test || die "set up test failed"
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# backgroup io pressure
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fio -filename=$md0 -rw=randwrite -direct=1 -name=test -bs=4k -numjobs=16 -iodepth=16 &
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# trigger add/remove device by io failure
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set_up_injection $dev0
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test_rdev $dev0 2 &
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pid="$pid $!"
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# add/remove device directly
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test_rdev $dev3 10 &
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pid="$pid $!"
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test_write_action &
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action_pid="$!"
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sleep $runtime
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exit 0
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