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from StringIO import StringIO
import json
import logging
from textwrap import dedent
from teuthology.orchestra.run import CommandFailedError
from teuthology import misc
from teuthology.orchestra import remote as orchestra_remote
from teuthology.orchestra import run
from teuthology.contextutil import MaxWhileTries
from .mount import CephFSMount
log = logging.getLogger(__name__)
UMOUNT_TIMEOUT = 300
class KernelMount(CephFSMount):
def __init__(self, mons, test_dir, client_id, client_remote,
ipmi_user, ipmi_password, ipmi_domain):
super(KernelMount, self).__init__(test_dir, client_id, client_remote)
self.mons = mons
self.mounted = False
self.ipmi_user = ipmi_user
self.ipmi_password = ipmi_password
self.ipmi_domain = ipmi_domain
def write_secret_file(self, remote, role, keyring, filename):
"""
Stash the keyring in the filename specified.
"""
remote.run(
args=[
'adjust-ulimits',
'ceph-coverage',
'{tdir}/archive/coverage'.format(tdir=self.test_dir),
'ceph-authtool',
'--name={role}'.format(role=role),
'--print-key',
keyring,
run.Raw('>'),
filename,
],
)
def mount(self, mount_path=None, mount_fs_name=None):
log.info('Mounting kclient client.{id} at {remote} {mnt}...'.format(
id=self.client_id, remote=self.client_remote, mnt=self.mountpoint))
keyring = self.get_keyring_path()
secret = '{tdir}/ceph.data/client.{id}.secret'.format(tdir=self.test_dir, id=self.client_id)
self.write_secret_file(self.client_remote, 'client.{id}'.format(id=self.client_id),
keyring, secret)
self.client_remote.run(
args=[
'mkdir',
'--',
self.mountpoint,
],
)
if mount_path is None:
mount_path = "/"
opts = 'name={id},secretfile={secret},norequire_active_mds'.format(id=self.client_id,
secret=secret)
if mount_fs_name is not None:
opts += ",mds_namespace={0}".format(mount_fs_name)
self.client_remote.run(
args=[
'sudo',
'adjust-ulimits',
'ceph-coverage',
'{tdir}/archive/coverage'.format(tdir=self.test_dir),
'/sbin/mount.ceph',
'{mons}:{mount_path}'.format(mons=','.join(self.mons), mount_path=mount_path),
self.mountpoint,
'-v',
'-o',
opts
],
)
self.client_remote.run(
args=['sudo', 'chmod', '1777', self.mountpoint])
self.mounted = True
def umount(self, force=False):
log.debug('Unmounting client client.{id}...'.format(id=self.client_id))
cmd=['sudo', 'umount', self.mountpoint]
if force:
cmd.append('-f')
try:
self.client_remote.run(args=cmd)
except Exception as e:
self.client_remote.run(args=[
'sudo',
run.Raw('PATH=/usr/sbin:$PATH'),
'lsof',
run.Raw(';'),
'ps', 'auxf',
])
raise e
rproc = self.client_remote.run(
args=[
'rmdir',
'--',
self.mountpoint,
],
wait=False
)
run.wait([rproc], UMOUNT_TIMEOUT)
self.mounted = False
def cleanup(self):
pass
def umount_wait(self, force=False, require_clean=False):
"""
Unlike the fuse client, the kernel client's umount is immediate
"""
if not self.is_mounted():
return
try:
self.umount(force)
except (CommandFailedError, MaxWhileTries):
if not force:
raise
self.kill()
self.kill_cleanup()
self.mounted = False
def is_mounted(self):
return self.mounted
def wait_until_mounted(self):
"""
Unlike the fuse client, the kernel client is up and running as soon
as the initial mount() function returns.
"""
assert self.mounted
def teardown(self):
super(KernelMount, self).teardown()
if self.mounted:
self.umount()
def kill(self):
"""
The Ceph kernel client doesn't have a mechanism to kill itself (doing
that in side the kernel would be weird anyway), so we reboot the whole node
to get the same effect.
We use IPMI to reboot, because we don't want the client to send any
releases of capabilities.
"""
con = orchestra_remote.getRemoteConsole(self.client_remote.hostname,
self.ipmi_user,
self.ipmi_password,
self.ipmi_domain)
con.power_off()
self.mounted = False
def kill_cleanup(self):
assert not self.mounted
con = orchestra_remote.getRemoteConsole(self.client_remote.hostname,
self.ipmi_user,
self.ipmi_password,
self.ipmi_domain)
con.power_on()
# Wait for node to come back up after reboot
misc.reconnect(None, 300, [self.client_remote])
# Remove mount directory
self.client_remote.run(
args=[
'rmdir',
'--',
self.mountpoint,
],
)
def _find_debug_dir(self):
"""
Find the debugfs folder for this mount
"""
pyscript = dedent("""
import glob
import os
import json
def get_id_to_dir():
result = {}
for dir in glob.glob("/sys/kernel/debug/ceph/*"):
mds_sessions_lines = open(os.path.join(dir, "mds_sessions")).readlines()
client_id = mds_sessions_lines[1].split()[1].strip('"')
result[client_id] = dir
return result
print json.dumps(get_id_to_dir())
""")
p = self.client_remote.run(args=[
'sudo', 'python', '-c', pyscript
], stdout=StringIO())
client_id_to_dir = json.loads(p.stdout.getvalue())
try:
return client_id_to_dir[self.client_id]
except KeyError:
log.error("Client id '{0}' debug dir not found (clients seen were: {1})".format(
self.client_id, ",".join(client_id_to_dir.keys())
))
raise
def _read_debug_file(self, filename):
debug_dir = self._find_debug_dir()
pyscript = dedent("""
import os
print open(os.path.join("{debug_dir}", "{filename}")).read()
""").format(debug_dir=debug_dir, filename=filename)
p = self.client_remote.run(args=[
'sudo', 'python', '-c', pyscript
], stdout=StringIO())
return p.stdout.getvalue()
def get_global_id(self):
"""
Look up the CephFS client ID for this mount, using debugfs.
"""
assert self.mounted
mds_sessions = self._read_debug_file("mds_sessions")
lines = mds_sessions.split("\n")
return int(lines[0].split()[1])
def get_osd_epoch(self):
"""
Return 2-tuple of osd_epoch, osd_epoch_barrier
"""
osd_map = self._read_debug_file("osdmap")
lines = osd_map.split("\n")
first_line_tokens = lines[0].split()
epoch, barrier = int(first_line_tokens[1]), int(first_line_tokens[3])
return epoch, barrier
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