1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
|
import json
import logging
import time
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 tasks.cephfs.mount import CephFSMount
log = logging.getLogger(__name__)
UMOUNT_TIMEOUT = 300
class KernelMount(CephFSMount):
def __init__(self, ctx, test_dir, client_id, client_remote,
ipmi_user, ipmi_password, ipmi_domain):
super(KernelMount, self).__init__(ctx, test_dir, client_id, client_remote)
self.mounted = False
self.ipmi_user = ipmi_user
self.ipmi_password = ipmi_password
self.ipmi_domain = ipmi_domain
def mount(self, mount_path=None, mount_fs_name=None, mountpoint=None):
if mountpoint is not None:
self.mountpoint = mountpoint
self.setupfs(name=mount_fs_name)
log.info('Mounting kclient client.{id} at {remote} {mnt}...'.format(
id=self.client_id, remote=self.client_remote, mnt=self.mountpoint))
self.client_remote.run(args=['mkdir', '-p', self.mountpoint],
timeout=(5*60))
if mount_path is None:
mount_path = "/"
opts = 'name={id},norequire_active_mds,conf={conf}'.format(id=self.client_id,
conf=self.config_path)
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),
'/bin/mount',
'-t',
'ceph',
':{mount_path}'.format(mount_path=mount_path),
self.mountpoint,
'-v',
'-o',
opts
],
timeout=(30*60),
)
self.client_remote.run(
args=['sudo', 'chmod', '1777', self.mountpoint], timeout=(5*60))
self.mounted = True
def umount(self, force=False):
if not self.is_mounted():
return
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, timeout=(15*60))
except Exception as e:
self.client_remote.run(args=[
'sudo',
run.Raw('PATH=/usr/sbin:$PATH'),
'lsof',
run.Raw(';'),
'ps', 'auxf',
], timeout=(15*60))
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, timeout=900):
"""
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.hard_reset(wait_for_login=False)
self.mounted = False
def kill_cleanup(self):
assert not self.mounted
# We need to do a sleep here because we don't know how long it will
# take for a hard_reset to be effected.
time.sleep(30)
try:
# Wait for node to come back up after reboot
misc.reconnect(None, 300, [self.client_remote])
except:
# attempt to get some useful debug output:
con = orchestra_remote.getRemoteConsole(self.client_remote.hostname,
self.ipmi_user,
self.ipmi_password,
self.ipmi_domain)
con.check_status(timeout=60)
raise
# Remove mount directory
self.client_remote.run(args=['uptime'], timeout=10)
# Remove mount directory
self.client_remote.run(
args=[
'rmdir',
'--',
self.mountpoint,
],
timeout=(5*60),
check_status=False,
)
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()))
""")
output = self.client_remote.sh([
'sudo', 'python3', '-c', pyscript
], timeout=(5*60))
client_id_to_dir = json.loads(output)
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)
output = self.client_remote.sh([
'sudo', 'python3', '-c', pyscript
], timeout=(5*60))
return output
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
|
