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This is for any test config that needs to run
some workunit with clients unmounted. It allows
you to go toggle the mountedness of a client as
you go up and down the stack list this:
- ceph-fuse:
client.0:
mounted: true
- workunit:
clients:
client.0:
- fs/misc/trivial_sync.sh
- ceph-fuse:
client.0:
mounted:
false
The initial use case for this is running the
cephfs_journal_tool_smoke.sh workunit, which
tests administrative operations that are meant
to be run on an unmounted filesystem.
Signed-off-by: John Spray <john.spray@redhat.com>
136 lines
3.9 KiB
Python
136 lines
3.9 KiB
Python
"""
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Ceph FUSE client task
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"""
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import contextlib
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import logging
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from teuthology import misc as teuthology
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from teuthology.orchestra import run
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from cephfs.fuse_mount import FuseMount
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log = logging.getLogger(__name__)
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def get_client_configs(ctx, config):
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"""
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Get a map of the configuration for each FUSE client in the configuration
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by combining the configuration of the current task with any global overrides.
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:param ctx: Context instance
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:param config: configuration for this task
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:return: dict of client name to config or to None
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"""
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if config is None:
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config = dict(('client.{id}'.format(id=id_), None)
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for id_ in teuthology.all_roles_of_type(ctx.cluster, 'client'))
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elif isinstance(config, list):
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config = dict((name, None) for name in config)
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overrides = ctx.config.get('overrides', {})
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teuthology.deep_merge(config, overrides.get('ceph-fuse', {}))
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return config
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@contextlib.contextmanager
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def task(ctx, config):
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"""
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Mount/unmount a ``ceph-fuse`` client.
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The config is optional and defaults to mounting on all clients. If
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a config is given, it is expected to be a list of clients to do
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this operation on. This lets you e.g. set up one client with
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``ceph-fuse`` and another with ``kclient``.
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Example that mounts all clients::
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tasks:
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- ceph:
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- ceph-fuse:
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- interactive:
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Example that uses both ``kclient` and ``ceph-fuse``::
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tasks:
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- ceph:
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- ceph-fuse: [client.0]
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- kclient: [client.1]
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- interactive:
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Example that enables valgrind:
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tasks:
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- ceph:
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- ceph-fuse:
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client.0:
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valgrind: [--tool=memcheck, --leak-check=full, --show-reachable=yes]
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- interactive:
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Example that stops an already-mounted client:
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::
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tasks:
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- ceph:
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- ceph-fuse: [client.0]
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- ... do something that requires the FS mounted ...
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- ceph-fuse:
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client.0:
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mounted: false
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- ... do something that requires the FS unmounted ...
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:param ctx: Context
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:param config: Configuration
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"""
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log.info('Mounting ceph-fuse clients...')
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testdir = teuthology.get_testdir(ctx)
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config = get_client_configs(ctx, config)
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# List clients we will configure mounts for, default is all clients
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clients = list(teuthology.get_clients(ctx=ctx, roles=config.keys()))
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all_mounts = getattr(ctx, 'mounts', {})
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mounted_by_me = {}
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# Construct any new FuseMount instances
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for id_, remote in clients:
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client_config = config.get("client.%s" % id_)
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if client_config is None:
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client_config = {}
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if id_ not in all_mounts:
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fuse_mount = FuseMount(client_config, testdir, id_, remote)
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all_mounts[id_] = fuse_mount
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else:
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# Catch bad configs where someone has e.g. tried to use ceph-fuse and kcephfs for the same client
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assert isinstance(all_mounts[id_], FuseMount)
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if client_config.get('mounted', True):
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mounted_by_me[id_] = all_mounts[id_]
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# Mount any clients we have been asked to (default to mount all)
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for mount in mounted_by_me.values():
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mount.mount()
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for mount in mounted_by_me.values():
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mount.wait_until_mounted()
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# Umount any pre-existing clients that we have not been asked to mount
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for client_id in set(all_mounts.keys()) - set(mounted_by_me.keys()):
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mount = all_mounts[client_id]
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if mount.is_mounted():
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mount.umount_wait()
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ctx.mounts = all_mounts
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try:
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yield all_mounts
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finally:
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log.info('Unmounting ceph-fuse clients...')
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for mount in mounted_by_me.values():
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# Conditional because an inner context might have umounted it
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if mount.is_mounted():
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mount.umount_wait()
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