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"""
Mount/unmount a ``kernel`` client.
"""
import contextlib
import logging
from teuthology.misc import deep_merge
from teuthology.orchestra.run import CommandFailedError
from teuthology import misc
from teuthology.contextutil import MaxWhileTries
from cephfs.kernel_mount import KernelMount
log = logging.getLogger(__name__)
@contextlib.contextmanager
def task(ctx, config):
"""
Mount/unmount a ``kernel`` client.
The config is optional and defaults to mounting on all clients. If
a config is given, it is expected to be a list of clients to do
this operation on. This lets you e.g. set up one client with
``ceph-fuse`` and another with ``kclient``.
Example that mounts all clients::
tasks:
- ceph:
- kclient:
- interactive:
Example that uses both ``kclient` and ``ceph-fuse``::
tasks:
- ceph:
- ceph-fuse: [client.0]
- kclient: [client.1]
- interactive:
Pass a dictionary instead of lists to specify per-client config:
tasks:
-kclient:
client.0:
debug: true
:param ctx: Context
:param config: Configuration
"""
log.info('Mounting kernel clients...')
assert config is None or isinstance(config, list) or isinstance(config, dict), \
"task kclient got invalid config"
if config is None:
config = ['client.{id}'.format(id=id_)
for id_ in misc.all_roles_of_type(ctx.cluster, 'client')]
if isinstance(config, list):
client_roles = config
config = dict([r, dict()] for r in client_roles)
elif isinstance(config, dict):
client_roles = filter(lambda x: 'client.' in x, config.keys())
else:
raise ValueError("Invalid config object: {0} ({1})".format(config, config.__class__))
# config has been converted to a dict by this point
overrides = ctx.config.get('overrides', {})
deep_merge(config, overrides.get('kclient', {}))
clients = list(misc.get_clients(ctx=ctx, roles=client_roles))
test_dir = misc.get_testdir(ctx)
# Assemble mon addresses
remotes_and_roles = ctx.cluster.remotes.items()
roles = [roles for (remote_, roles) in remotes_and_roles]
ips = [remote_.ssh.get_transport().getpeername()[0]
for (remote_, _) in remotes_and_roles]
mons = misc.get_mons(roles, ips).values()
mounts = {}
for id_, remote in clients:
client_config = config.get("client.%s" % id_)
if client_config is None:
client_config = {}
if config.get("disabled", False) or not client_config.get('mounted', True):
continue
kernel_mount = KernelMount(
mons,
test_dir,
id_,
remote,
ctx.teuthology_config.get('ipmi_user', None),
ctx.teuthology_config.get('ipmi_password', None),
ctx.teuthology_config.get('ipmi_domain', None)
)
mounts[id_] = kernel_mount
if client_config.get('debug', False):
remote.run(args=["sudo", "bash", "-c", "echo 'module ceph +p' > /sys/kernel/debug/dynamic_debug/control"])
remote.run(args=["sudo", "bash", "-c", "echo 'module libceph +p' > /sys/kernel/debug/dynamic_debug/control"])
kernel_mount.mount()
def umount_all():
log.info('Unmounting kernel clients...')
forced = False
for mount in mounts.values():
if mount.is_mounted():
try:
mount.umount()
except (CommandFailedError, MaxWhileTries):
log.warn("Ordinary umount failed, forcing...")
forced = True
mount.umount_wait(force=True)
return forced
ctx.mounts = mounts
try:
yield mounts
except:
umount_all() # ignore forced retval, we are already in error handling
finally:
forced = umount_all()
if forced:
# The context managers within the kclient manager worked (i.e.
# the test workload passed) but for some reason we couldn't
# umount, so turn this into a test failure.
raise RuntimeError("Kernel mounts did not umount cleanly")
|
