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#!/usr/bin/env python3
from __future__ import print_function
import subprocess
import json
import os
import time
import sys
import rados as rados
import cephfs as cephfs
prefix='testbt'
def get_name(b, i, j):
c = '{pre}.{pid}.{i}.{j}'.format(pre=prefix, pid=os.getpid(), i=i, j=j)
return c, b + '/' + c
def mkdir(ceph, d):
print("mkdir {d}".format(d=d), file=sys.stderr)
ceph.mkdir(d, 0o755)
return ceph.stat(d)['st_ino']
def create(ceph, f):
print("creating {f}".format(f=f), file=sys.stderr)
fd = ceph.open(f, os.O_CREAT | os.O_RDWR, 0o644)
ceph.close(fd)
return ceph.stat(f)['st_ino']
def set_mds_config_param(ceph, param):
with open('/dev/null', 'rb') as devnull:
confarg = ''
if conf != '':
confarg = '-c {c}'.format(c=conf)
r = subprocess.call("ceph {ca} mds tell a injectargs '{p}'".format(ca=confarg, p=param), shell=True, stdout=devnull)
if r != 0:
raise Exception
class _TrimIndentFile(object):
def __init__(self, fp):
self.fp = fp
def readline(self):
line = self.fp.readline()
return line.lstrip(' \t')
def _optionxform(s):
s = s.replace('_', ' ')
s = '_'.join(s.split())
return s
def conf_set_kill_mds(location, killnum):
print('setting mds kill config option for {l}.{k}'.format(l=location, k=killnum), file=sys.stderr)
print("restart mds a mds_kill_{l}_at {k}".format(l=location, k=killnum))
sys.stdout.flush()
for l in sys.stdin.readline():
if l == 'restarted':
break
def flush(ceph, testnum):
print('flushing {t}'.format(t=testnum), file=sys.stderr)
set_mds_config_param(ceph, '--mds_log_max_segments 1')
for i in range(1, 500):
f = '{p}.{pid}.{t}.{i}'.format(p=prefix, pid=os.getpid(), t=testnum, i=i)
print('flushing with create {f}'.format(f=f), file=sys.stderr)
fd = ceph.open(f, os.O_CREAT | os.O_RDWR, 0o644)
ceph.close(fd)
ceph.unlink(f)
print('flush doing shutdown', file=sys.stderr)
ceph.shutdown()
print('flush reinitializing ceph', file=sys.stderr)
ceph = cephfs.LibCephFS(conffile=conf)
print('flush doing mount', file=sys.stderr)
ceph.mount()
return ceph
def kill_mds(ceph, location, killnum):
print('killing mds: {l}.{k}'.format(l=location, k=killnum), file=sys.stderr)
set_mds_config_param(ceph, '--mds_kill_{l}_at {k}'.format(l=location, k=killnum))
def wait_for_mds(ceph):
# wait for restart
while True:
confarg = ''
if conf != '':
confarg = '-c {c}'.format(c=conf)
r = subprocess.check_output("ceph {ca} mds stat".format(ca=confarg), shell=True).decode()
if r.find('a=up:active'):
break
time.sleep(1)
def decode(value):
tmpfile = '/tmp/{p}.{pid}'.format(p=prefix, pid=os.getpid())
with open(tmpfile, 'w+') as f:
f.write(value)
p = subprocess.Popen(
[
'ceph-dencoder',
'import',
tmpfile,
'type',
'inode_backtrace_t',
'decode',
'dump_json',
],
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
)
(stdout, _) = p.communicate(input=value)
p.stdin.close()
if p.returncode != 0:
raise Exception
os.remove(tmpfile)
return json.loads(stdout)
class VerifyFailure(Exception):
pass
def verify(rados_ioctx, ino, values, pool):
print('getting parent attr for ino: %lx.00000000' % ino, file=sys.stderr)
savede = None
for i in range(1, 20):
try:
savede = None
binbt = rados_ioctx.get_xattr('%lx.00000000' % ino, 'parent')
except rados.ObjectNotFound as e:
# wait for a bit to let segments get flushed out
savede = e
time.sleep(10)
if savede:
raise savede
bt = decode(binbt)
ind = 0
if bt['ino'] != ino:
raise VerifyFailure('inode mismatch: {bi} != {ino}\n\tbacktrace:\n\t\t{bt}\n\tfailed verify against:\n\t\t{i}, {v}'.format(
bi=bt['ancestors'][ind]['dname'], ino=ino, bt=bt, i=ino, v=values))
for (n, i) in values:
if bt['ancestors'][ind]['dirino'] != i:
raise VerifyFailure('ancestor dirino mismatch: {b} != {ind}\n\tbacktrace:\n\t\t{bt}\n\tfailed verify against:\n\t\t{i}, {v}'.format(
b=bt['ancestors'][ind]['dirino'], ind=i, bt=bt, i=ino, v=values))
if bt['ancestors'][ind]['dname'] != n:
raise VerifyFailure('ancestor dname mismatch: {b} != {n}\n\tbacktrace:\n\t\t{bt}\n\tfailed verify against:\n\t\t{i}, {v}'.format(
b=bt['ancestors'][ind]['dname'], n=n, bt=bt, i=ino, v=values))
ind += 1
if bt['pool'] != pool:
raise VerifyFailure('pool mismatch: {btp} != {p}\n\tbacktrace:\n\t\t{bt}\n\tfailed verify against:\n\t\t{i}, {v}'.format(
btp=bt['pool'], p=pool, bt=bt, i=ino, v=values))
def make_abc(ceph, rooti, i):
expected_bt = []
c, d = get_name("/", i, 0)
expected_bt = [(c, rooti)] + expected_bt
di = mkdir(ceph, d)
c, d = get_name(d, i, 1)
expected_bt = [(c, di)] + expected_bt
di = mkdir(ceph, d)
c, f = get_name(d, i, 2)
fi = create(ceph, f)
expected_bt = [(c, di)] + expected_bt
return fi, expected_bt
test = -1
if len(sys.argv) > 1:
test = int(sys.argv[1])
conf = ''
if len(sys.argv) > 2:
conf = sys.argv[2]
radosobj = rados.Rados(conffile=conf)
radosobj.connect()
ioctx = radosobj.open_ioctx('data')
ceph = cephfs.LibCephFS(conffile=conf)
ceph.mount()
rooti = ceph.stat('/')['st_ino']
test = -1
if len(sys.argv) > 1:
test = int(sys.argv[1])
conf = '/etc/ceph/ceph.conf'
if len(sys.argv) > 2:
conf = sys.argv[2]
# create /a/b/c
# flush
# verify
i = 0
if test < 0 or test == i:
print('Running test %d: basic verify' % i, file=sys.stderr)
ino, expected_bt = make_abc(ceph, rooti, i)
ceph = flush(ceph, i)
verify(ioctx, ino, expected_bt, 0)
i += 1
# kill-mds-at-openc-1
# create /a/b/c
# restart-mds
# flush
# verify
if test < 0 or test == i:
print('Running test %d: kill openc' % i, file=sys.stderr)
print("restart mds a")
sys.stdout.flush()
kill_mds(ceph, 'openc', 1)
ino, expected_bt = make_abc(ceph, rooti, i)
ceph = flush(ceph, i)
verify(ioctx, ino, expected_bt, 0)
i += 1
# kill-mds-at-openc-1
# create /a/b/c
# restart-mds with kill-mds-at-replay-1
# restart-mds
# flush
# verify
if test < 0 or test == i:
print('Running test %d: kill openc/replay' % i, file=sys.stderr)
# these are reversed because we want to prepare the config
conf_set_kill_mds('journal_replay', 1)
kill_mds(ceph, 'openc', 1)
print("restart mds a")
sys.stdout.flush()
ino, expected_bt = make_abc(ceph, rooti, i)
ceph = flush(ceph, i)
verify(ioctx, ino, expected_bt, 0)
i += 1
ioctx.close()
radosobj.shutdown()
ceph.shutdown()
print("done")
sys.stdout.flush()
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