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#
# Library with some functions for writing bcachefs tests using the
# ktest framework.
#
require-lib ../test-libs.sh
require-git http://evilpiepirate.org/git/bcachefs-tools.git
require-make bcachefs-tools
require-kernel-config BCACHEFS_FS
require-kernel-config BCACHEFS_DEBUG
if [[ $ktest_arch = x86_64 ]]; then
require-kernel-config CRYPTO_CRC32C_INTEL
require-kernel-config CRYPTO_POLY1305_X86_64
require-kernel-config CRYPTO_CHACHA20_X86_64
fi
#Expensive:
#require-kernel-config CLOSURE_DEBUG
expect_sysfs()
{
prefix=$1
name=$2
value=$3
for file in $(echo /sys/fs/bcachefs/*/${prefix}*/${name}); do
if [ -e $file ]; then
current="$(cat $file)"
if [ "$current" != "$value" ]; then
echo "Mismatch for $file: got $current, want $value"
exit 1
else
echo "OK: $file $value"
fi
fi
done
}
antagonist_shrink()
{
while true; do
for file in $(find /sys/fs/bcachefs -name prune_cache); do
echo 1000000 > $file > /dev/null 2>&1 || true
done
sleep 0.5
done
}
antagonist_expensive_debug_checks()
{
# This only exists if CONFIG_BCACHE_DEBUG is on
p=/sys/module/bcachefs/parameters/expensive_debug_checks
if [ -f $p ]; then
while true; do
echo 1 > $p
sleep 5
echo 0 > $p
sleep 10
done
fi
}
antagonist_trigger_gc()
{
while true; do
sleep 10
echo 1 | tee /sys/fs/bcachefs/*/internal/trigger_gc >& /dev/null || true
done
}
antagonist_switch_str_hash()
{
cd /sys/fs/bcachefs
while true; do
for i in crc32c crc64 siphash; do
echo $i | tee */options/str_hash >& /dev/null || true
sleep 2
done
done
}
antagonist_switch_crc()
{
cd /sys/fs/bcachefs
while true; do
for i in crc32c crc64; do
echo $i | tee */options/data_checksum */options/metadata_checksum >& /dev/null || true
sleep 2
done
done
}
bcachefs_antagonist()
{
#setup_tracing
#setup_tracing 'bcachefs:*'
#echo 1 > /sys/module/bcachefs/parameters/expensive_debug_checks
#echo 1 > /sys/module/bcachefs/parameters/debug_check_iterators
#echo 1 > /sys/module/bcachefs/parameters/debug_check_bkeys
#echo 1 > /sys/module/bcachefs/parameters/debug_check_btree_accounting
#echo 1 > /sys/module/bcachefs/parameters/test_alloc_startup
#echo 1 > /sys/module/bcachefs/parameters/test_restart_gc
#echo 1 > /sys/module/bcachefs/parameters/test_reconstruct_alloc
#echo 1 > /sys/module/bcachefs/parameters/verify_btree_ondisk
#echo 1 > /sys/module/bcachefs/parameters/verify_all_btree_replicas
#echo 1 > /sys/module/bcachefs/parameters/btree_gc_coalesce_disabled
#echo 1 > /sys/module/bcachefs/parameters/key_merging_disabled
#echo 1 > /sys/module/bcachefs/parameters/journal_seq_verify
#enable_race_faults
antagonist_expensive_debug_checks &
antagonist_shrink &
antagonist_sync &
antagonist_trigger_gc &
#antagonist_switch_str_hash &
}
fill_device()
{
local filename=$1
fio \
--filename=$filename \
--ioengine=sync \
--name=write \
--rw=write \
--bs=16M \
--fill_fs=1
echo 3 > /proc/sys/vm/drop_caches
}
run_fio_base()
{
fio --eta=always \
--exitall_on_error=1 \
--randrepeat=0 \
--ioengine=libaio \
--iodepth=64 \
--iodepth_batch=16 \
--direct=1 \
--numjobs=1 \
--verify=crc32c \
--verify_fatal=1 \
--filename=/mnt/fiotest \
"$@"
}
run_fio()
{
local loops=$((($ktest_priority + 1) * 4))
fio --eta=always \
--exitall_on_error=1 \
--ioengine=libaio \
--iodepth=64 \
--iodepth_batch=16 \
--direct=1 \
--numjobs=1 \
--verify=crc32c \
--verify_fatal=1 \
--buffer_compress_percentage=30 \
--filename=/mnt/fiotest \
--filesize=3500M \
--loops=$loops \
"$@"
}
run_fio_randrw()
{
set_watchdog 300
run_fio \
--name=randrw \
--rw=randrw \
--bsrange=4k-1M \
"$@"
}
run_basic_fio_test()
{
set_watchdog 300
local devs=()
for i in "$@"; do
[[ ${i:0:1} != - ]] && devs+=($i)
done
bcachefs_antagonist
run_quiet "" bcachefs format -f --discard --no_initialize "$@"
mount -t bcachefs -o fsck $(join_by : "${devs[@]}") /mnt
#enable_memory_faults
run_fio_randrw
#dd if=/dev/zero of=/mnt/foo bs=2M count=1024 oflag=direct
#disable_memory_faults
umount /mnt
# test remount:
#mount -t bcachefs -o fsck $(join_by : "${devs[@]}") /mnt
#umount /mnt
bcachefs fsck -n "${devs[@]}"
}
require-kernel-config DEBUG_FS
#require-kernel-config DYNAMIC_FAULT
run_fault_injection_test()
{
local class="class $1"
local fn=$2
local control=/sys/kernel/debug/dynamic_fault/control
local nr=$(grep "class:$1" $control|wc -l)
for ((i=0; i<nr; i++)); do
local fault="class $1 index $i"
#echo -n "TESTING FAULT "; grep $class $control|sed -n $((i+1))p
echo "TESTING FAULT $fault"
set_faults "$fault enable"
$fn "$fault"
set_faults "$fault disable"
done
}
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