mirror of
https://github.com/ceph/ceph
synced 2024-12-30 15:33:31 +00:00
120 lines
3.6 KiB
Python
120 lines
3.6 KiB
Python
"""
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Task for running rbd mirroring daemons and configuring mirroring
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"""
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import logging
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from teuthology.orchestra import run
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from teuthology import misc
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from teuthology.exceptions import ConfigError
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from teuthology.task import Task
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from util import get_remote_for_role
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log = logging.getLogger(__name__)
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class RBDMirror(Task):
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"""
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Run an rbd-mirror daemon to sync rbd images between clusters.
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This requires two clients (one from each cluster) on the same host
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to connect with. The pool configuration should be adjusted by later
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test scripts to include the remote client and cluster name. This task
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just needs to know how to connect to the local cluster.
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For example:
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roles:
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- [primary.mon.a, primary.osd.0, primary.osd.1, primary.osd.2]
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- [secondary.mon.a, secondary.osd.0, secondary.osd.1, secondary.osd.2]
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- [primary.client.mirror, secondary.client.mirror]
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tasks:
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- ceph:
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cluster: primary
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- ceph:
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cluster: secondary
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- rbd-mirror:
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client: primary.client.mirror
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To mirror back to the primary cluster as well, add another
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rbd_mirror instance:
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- rbd-mirror:
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client: secondary.client.mirror
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Possible options for this task are:
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client: role - ceph client to connect as
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valgrind: [--tool=<valgrind tool>] - none by default
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coverage: bool - whether this run may be collecting coverage data
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thrash: bool - whether this run may be thrashed
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"""
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def __init__(self, ctx, config):
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super(RBDMirror, self).__init__(ctx, config)
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self.log = log
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def setup(self):
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super(RBDMirror, self).setup()
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try:
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self.client = self.config['client']
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except KeyError:
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raise ConfigError('rbd-mirror requires a client to connect with')
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self.cluster_name, type_, self.client_id = misc.split_role(self.client)
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if type_ != 'client':
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msg = 'client role ({0}) must be a client'.format(self.client)
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raise ConfigError(msg)
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self.remote = get_remote_for_role(self.ctx, self.client)
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def begin(self):
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super(RBDMirror, self).begin()
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testdir = misc.get_testdir(self.ctx)
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daemon_signal = 'kill'
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if 'coverage' in self.config or 'valgrind' in self.config or \
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self.config.get('thrash', False):
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daemon_signal = 'term'
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args = [
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'adjust-ulimits',
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'ceph-coverage',
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'{tdir}/archive/coverage'.format(tdir=testdir),
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'daemon-helper',
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daemon_signal,
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]
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if 'valgrind' in self.config:
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args = misc.get_valgrind_args(
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testdir,
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'rbd-mirror-{id}'.format(id=self.client),
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args,
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self.config.get('valgrind')
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)
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args.extend([
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'rbd-mirror', '--foreground',
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'--cluster',
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self.cluster_name,
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'--id',
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self.client_id,
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])
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self.ctx.daemons.add_daemon(
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self.remote, 'rbd-mirror', self.client,
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cluster=self.cluster_name,
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args=args,
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logger=self.log.getChild(self.client),
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stdin=run.PIPE,
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wait=False,
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)
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def end(self):
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mirror_daemon = self.ctx.daemons.get_daemon('rbd-mirror',
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self.client,
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self.cluster_name)
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mirror_daemon.stop()
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super(RBDMirror, self).end()
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task = RBDMirror
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