azat

#include <event2/event.h>
#include <event2/thread.h>
#include <event2/util.h>

#include <stdlib.h>
#include <pthread.h>
#include <assert.h>
#include <unistd.h>
#include <string.h>

azat

#!/usr/bin/env bash

for i in {1..8}; do
        truncate -s10m loop-$i
        losetup /dev/loop$i loop-$i
done

mdadm -CR /dev/md0 --metadata 1.1 --level raid10 --raid-disks 4 /dev/loop{1..4}
# recovery
sleep 1m

azat

#!/usr/bin/env bash

head -c100M /dev/zero > /tmp/zero
cp /tmp/zero /srv/nfs4/zero

exec 3</mnt/nfs4/zero

exportfs -f
rpc.nfsd 0
exportfs -r

azat

#!/usr/bin/env python3

import sys
import re

"""
Decode kernel message from mpt*sas, like:
  mpt3sas_cm0: log_info(0x31120303): originator(PL), code(0x12), sub_code(0x0303)
  mpt2sas_cm0: log_info(0x31120303): originator(PL), code(0x12), sub_code(0x0303)

azat

#!/usr/bin/env bash

function match()
{
    local f="$1" && shift
    [[ "$f" =~ [^/]*\.conf$ ]] && {
        local o=(
            '^cert '
            '^key '
            '^tls-auth '

azat

#include <stdio.h>
#include <unistd.h>
#include <pthread.h>

#include <event2/event.h>
#include <event2/thread.h>

void
cb( evutil_socket_t fd, short what, void *arg )
{

azat

#!/usr/bin/env python3

import sys, os, time
import subprocess
import argparse
import re

def exec(cmd):
    return subprocess.check_output(cmd)

azat

#!/usr/bin/env bash

function usage()
{
    cat - <<EOL
Get DIMM Bank Locator (via dmidecode) by ADDR from mcelog
(tested with dmidecode 3.1)

Usage: $0 <addr>
EOL

azat

gettimeofday(): 53.7 *1e6 # vdso
getpid():       15.4 *1e6 # non-vdso

3.5x time slower

azat

// https://github.com/libevent/libevent/issues/674#issuecomment-409853793

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <unistd.h>
#include <inttypes.h>
#include <sys/types.h>
#include <sys/socket.h>