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#!/usr/bin/env python3
import os
import sys
import getopt
import subprocess
import signal
import re
fio_bin = "fio"
def show_help():
print("""Usage: {} run_fio.py [options] [args]
Description:
Run FIO job file 'fio.job' on remote machines.
NOTE: The job file must exist on remote machines on '/root/' directory.
Args:
[VMs] (ex. vm1_IP:vm1_port:vm1_disk1:vm_disk2,vm2_IP:vm2_port:vm2_disk1,etc...)
Options:
-h, --help Show this message.
-j, --job-file Paths to file with FIO job configuration on remote host.
-f, --fio-bin Location of FIO binary on local host (Default "fio")
-o, --out Directory used to save generated job files and
files with test results
-J, --json Use JSON format for output
-p, --perf-vmex Enable aggregating statistic for VMEXITS for VMs
""".format(os.path.split(sys.executable)[-1]))
def exec_cmd(cmd, blocking):
# Print result to STDOUT for now, we don't have json support yet.
p = subprocess.Popen(cmd.split(" "), stdout=subprocess.PIPE,
stderr=subprocess.STDOUT, stdin=subprocess.PIPE)
if blocking is True:
out, _ = p.communicate()
return p.returncode, out.decode()
return p
def save_file(path, mode, contents):
with open(path, mode) as fh:
fh.write(contents)
fh.close()
def run_fio(vms, fio_cfg_fname, out_path, perf_vmex=False, json=False):
global fio_bin
job_name = os.path.splitext(os.path.basename(fio_cfg_fname))[0]
# Build command for FIO
fio_cmd = " ".join([fio_bin, "--eta=never"])
if json:
fio_cmd = " ".join([fio_bin, "--output-format=json"])
for vm in vms:
# vm[0] = IP address, vm[1] = Port number
fio_cmd = " ".join([fio_cmd,
"--client={vm_ip},{vm_port}".format(vm_ip=vm[0], vm_port=vm[1]),
"--remote-config {cfg}".format(cfg=fio_cfg_fname)])
print(fio_cmd)
if perf_vmex:
perf_dir = os.path.join(out_path, "perf_stats")
try:
os.mkdir(perf_dir)
except OSError:
pass
# Start gathering perf statistics for host and VM guests
perf_rec_file = os.path.join(perf_dir, "perf.data.kvm")
perf_run_cmd = "perf kvm --host --guest " + \
"-o {0} stat record -a".format(perf_rec_file)
print(perf_run_cmd)
perf_p = exec_cmd(perf_run_cmd, blocking=False)
# Run FIO test on VMs
rc, out = exec_cmd(fio_cmd, blocking=True)
# if for some reason output contains lines with "eta" - remove them
out = re.sub(r'.+\[eta\s+\d{2}m:\d{2}s\]', '', out)
print(out)
if rc != 0:
print("ERROR! While executing FIO jobs - RC: {rc}".format(rc=rc, out=out))
sys.exit(rc)
else:
save_file(os.path.join(out_path, ".".join([job_name, "log"])), "w", out)
if perf_vmex:
# Stop gathering perf statistics and prepare some result files
perf_p.send_signal(signal.SIGINT)
perf_p.wait()
perf_stat_cmd = "perf kvm --host -i {perf_rec} stat report --event vmexit"\
.format(perf_rec=perf_rec_file)
rc, out = exec_cmd(" ".join([perf_stat_cmd, "--event vmexit"]),
blocking=True)
print("VMexit host stats:")
print("{perf_out}".format(perf_out=out))
save_file(os.path.join(perf_dir, "vmexit_stats_" + job_name),
"w", "{perf_out}".format(perf_out=out))
try:
os.remove(perf_rec_file)
except OSError:
pass
def main():
global fio_bin
abspath = os.path.abspath(__file__)
dname = os.path.dirname(abspath)
vms = []
fio_cfg = None
out_dir = None
perf_vmex = False
json = False
try:
opts, args = getopt.getopt(sys.argv[1:], "hJj:f:o:p",
["help", "job-file=", "fio-bin=",
"out=", "perf-vmex", "json"])
except getopt.GetoptError:
show_help()
sys.exit(1)
if len(args) < 1:
show_help()
sys.exit(1)
for o, a in opts:
if o in ("-j", "--job-file"):
fio_cfg = a
elif o in ("-h", "--help"):
show_help()
sys.exit(1)
elif o in ("-p", "--perf-vmex"):
perf_vmex = True
elif o in ("-o", "--out"):
out_dir = a
elif o in ("-f", "--fio-bin"):
fio_bin = a
elif o in ("-J", "--json"):
json = True
if fio_cfg is None:
print("ERROR! No FIO job provided!")
sys.exit(1)
if out_dir is None or not os.path.exists(out_dir):
print("ERROR! Folder {out_dir} does not exist ".format(out_dir=out_dir))
sys.exit(1)
# Get IP, port and fio 'filename' information from positional args
for arg in args[0].split(","):
_ = arg.split(":")
ip, port, filenames = _[0], _[1], ":".join(_[2:])
vms.append((ip, port, filenames))
print("Running job file: {0}".format(fio_cfg))
run_fio(vms, fio_cfg, out_dir, perf_vmex, json)
if __name__ == "__main__":
sys.exit(main())
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