mdadm/tests/10ddf-fail-spare

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# Test suggested by Albert Pauw: Create, fail one disk, have mdmon
# activate the spare,
# then run create again. Shouldn't use the failed disk for Create,
. tests/env-ddf-template
tmp=$(mktemp /tmp/mdtest-XXXXXX)
rm -f $tmp
mdadm --zero-superblock $dev8 $dev9 $dev10 $dev11 $dev12 $dev13
mdadm -CR $container -e ddf -l container -n 5 $dev8 $dev9 $dev10 $dev11 $dev12
mdadm -CR $member0 -l raid1 -n 2 $container
#$dir/mdadm -CR $member0 -l raid1 -n 2 $container >/tmp/mdmon.txt 2>&1
check wait
set -- $(get_raiddisks $member0)
fail0=$1
mdadm --fail $member0 $fail0
# To make sure the spare is activated, we may have to sleep
# 2s has always been enough for me
sleep 2
check wait
# This test can succeed both ways - if spare was activated
# before new array was created, we see only member 0.
# otherwise, we see both, adn member0 is degraded because the
# new array grabbed the spare
# which case occurs depends on the sleep time above.
ret=0
if mdadm -CR $member1 -l raid5 -n 3 $container; then
# Creation successful - must have been quicker than spare activation
check wait
set -- $(get_raiddisks $member1)
if [ $1 = $fail0 -o $2 = $fail0 -o $3 = $fail0 ]; then
echo ERROR: $member1 must not contain $fail0: $@
ret=1
fi
d1=$1
mdadm -E $d1 >$tmp
if ! grep -q 'state\[1\] : Optimal, Consistent' $tmp; then
echo ERROR: member 1 should be optimal in meta data
ret=1
fi
state0=Degraded
else
# Creation unsuccessful - spare was used for member 0
state0=Optimal
fi
# need to delay a little bit, sometimes the meta data aren't
# up-to-date yet
sleep 0.5
set -- $(get_raiddisks $member0)
if [ $1 = $fail0 -o $2 = $fail0 ]; then
echo ERROR: $member0 must not contain $fail0: $@
ret=1
fi
d0=$1
[ -f $tmp ] || mdadm -E $d0 >$tmp
if ! grep -q 'state\[0\] : '$state0', Consistent' $tmp; then
echo ERROR: member 0 should be $state0 in meta data
ret=1
fi
if ! grep -q 'Offline, Failed' $tmp; then
echo ERROR: Failed disk expected in meta data
ret=1
fi
if [ $ret -eq 1 ]; then
cat /proc/mdstat
mdadm -E $d0
mdadm -E $d1
mdadm -E $fail0
fi
[ -f /tmp/mdmon.txt ] && {
cat /tmp/mdmon.txt
rm -f /tmp/mdmon.txt
}
rm -f $tmp
[ $ret -eq 0 ]