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#!/usr/bin/env bash
. $(dirname $(readlink -e ${BASH_SOURCE[0]}))/bcache-test-libs.sh
config-cache 2G
config-tier 4G
config-bucket-size 32k
config-block-size 4k
config-volume 1600M
config-cpus 1
nr_iterations=$(((ktest_priority + 1) * 8))
config-timeout $((nr_iterations * 30))
# Usage: fio_pass read/write verify
fio_pass()
{
(
# Our default working directory (/cdrom) is not writable,
# fio wants to write files when verify_dump is set, so
# change to a different directory.
cd $ktest_out
for dev in $DEVICES; do
fio --eta=always - <<-ZZ &
[global]
randrepeat=0
ioengine=libaio
iodepth=64
direct=1
verify_fatal=1
verify_dump=1
filename=$dev
[foo]
blocksize_range=4k-128k
rw=$1
verify=$2
ZZ
done
wait_all
)
}
test_main()
{
setup_tracing 'bcache:*'
if [ $NR_REBOOTS = 0 ]; then
setup_bcache
else
existing_bcache
fi
run_antagonist
if [ "$NR_REBOOTS" == "$nr_iterations" ]; then
discard_all_devices
stop_bcache
else
case $((NR_REBOOTS % 2)) in
0)
workload=write
;;
1)
workload=read
;;
esac
# Change verify type between successive write/read pairs
# to detect stale data
case $(((NR_REBOOTS / 2) % 2)) in
0)
verify=crc32c-intel
;;
1)
verify=meta
;;
esac
fio_pass $workload $verify
# Unclean vs unclean shutdown
case $(((NR_REBOOTS / 4) % 2)) in
1)
stop_bcache
;;
esac
do_reboot
fi
}
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