mirror of
https://github.com/ceph/ceph
synced 2024-12-24 20:33:27 +00:00
bab4c7aa71
Use this during test setup to check whether a filesystem is configured at all, before trying to tear it down. Signed-off-by: John Spray <john.spray@redhat.com>
265 lines
10 KiB
Python
265 lines
10 KiB
Python
import json
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import logging
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import unittest
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from unittest import case
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import time
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import os
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import re
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from StringIO import StringIO
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from tasks.cephfs.fuse_mount import FuseMount
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from teuthology.orchestra import run
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from teuthology.orchestra.run import CommandFailedError
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log = logging.getLogger(__name__)
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class CephFSTestCase(unittest.TestCase):
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"""
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Test case for Ceph FS, requires caller to populate Filesystem and Mounts,
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into the fs, mount_a, mount_b class attributes (setting mount_b is optional)
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Handles resetting the cluster under test between tests.
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"""
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# Environment references
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mounts = None
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fs = None
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ctx = None
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# FIXME weird explicit naming
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mount_a = None
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mount_b = None
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# Declarative test requirements: subclasses should override these to indicate
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# their special needs. If not met, tests will be skipped.
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CLIENTS_REQUIRED = 1
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MDSS_REQUIRED = 1
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REQUIRE_KCLIENT_REMOTE = False
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REQUIRE_ONE_CLIENT_REMOTE = False
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LOAD_SETTINGS = []
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def setUp(self):
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if len(self.fs.mds_ids) < self.MDSS_REQUIRED:
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raise case.SkipTest("Only have {0} MDSs, require {1}".format(
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len(self.fs.mds_ids), self.MDSS_REQUIRED
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))
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if len(self.mounts) < self.CLIENTS_REQUIRED:
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raise case.SkipTest("Only have {0} clients, require {1}".format(
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len(self.mounts), self.CLIENTS_REQUIRED
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))
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if self.REQUIRE_KCLIENT_REMOTE:
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if not isinstance(self.mounts[0], FuseMount) or not isinstance(self.mounts[1], FuseMount):
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# kclient kill() power cycles nodes, so requires clients to each be on
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# their own node
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if self.mounts[0].client_remote.hostname == self.mounts[1].client_remote.hostname:
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raise case.SkipTest("kclient clients must be on separate nodes")
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if self.REQUIRE_ONE_CLIENT_REMOTE:
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if self.mounts[0].client_remote.hostname in self.fs.get_mds_hostnames():
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raise case.SkipTest("Require first client to be on separate server from MDSs")
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# Unmount all surplus clients
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for i in range(self.CLIENTS_REQUIRED, len(self.mounts)):
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mount = self.mounts[i]
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log.info("Unmounting unneeded client {0}".format(mount.client_id))
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mount.umount_wait()
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# Create friendly mount_a, mount_b attrs
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for i in range(0, self.CLIENTS_REQUIRED):
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setattr(self, "mount_{0}".format(chr(ord('a') + i)), self.mounts[i])
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self.fs.clear_firewall()
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# Unmount in order to start each test on a fresh mount, such
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# that test_barrier can have a firm expectation of what OSD
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# epoch the clients start with.
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if self.mount_a.is_mounted():
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self.mount_a.umount_wait()
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if self.mount_b:
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if self.mount_b.is_mounted():
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self.mount_b.umount_wait()
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# To avoid any issues with e.g. unlink bugs, we destroy and recreate
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# the filesystem rather than just doing a rm -rf of files
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self.fs.mds_stop()
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if self.fs.exists():
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self.fs.mds_fail()
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self.fs.delete_all()
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self.fs.create()
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# In case the previous filesystem had filled up the RADOS cluster, wait for that
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# flag to pass.
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osd_mon_report_interval_max = int(self.fs.get_config("osd_mon_report_interval_max", service_type='osd'))
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self.wait_until_true(lambda: not self.fs.is_full(),
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timeout=osd_mon_report_interval_max * 5)
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# In case anything is in the OSD blacklist list, clear it out. This is to avoid
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# the OSD map changing in the background (due to blacklist expiry) while tests run.
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blacklist = json.loads(self.fs.mon_manager.raw_cluster_cmd("osd", "dump", "--format=json-pretty"))['blacklist']
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log.info("Removing {0} blacklist entries".format(len(blacklist)))
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for addr, blacklisted_at in blacklist.items():
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self.fs.mon_manager.raw_cluster_cmd("osd", "blacklist", "rm", addr)
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# In case some test messed with auth caps, reset them
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for mount in self.mounts:
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self.fs.mon_manager.raw_cluster_cmd_result(
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'auth', 'caps', "client.{0}".format(mount.client_id),
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'mds', 'allow',
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'mon', 'allow r',
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'osd', 'allow rw pool={0}'.format(self.fs.get_data_pool_name()))
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self.fs.mds_restart()
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self.fs.wait_for_daemons()
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if not self.mount_a.is_mounted():
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self.mount_a.mount()
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self.mount_a.wait_until_mounted()
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if self.mount_b:
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if not self.mount_b.is_mounted():
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self.mount_b.mount()
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self.mount_b.wait_until_mounted()
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# Load an config settings of interest
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for setting in self.LOAD_SETTINGS:
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setattr(self, setting, int(self.fs.mds_asok(
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['config', 'get', setting], self.fs.mds_ids[0]
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)[setting]))
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self.configs_set = set()
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def tearDown(self):
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self.fs.clear_firewall()
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self.mount_a.teardown()
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if self.mount_b:
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self.mount_b.teardown()
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for subsys, key in self.configs_set:
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self.fs.clear_ceph_conf(subsys, key)
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def set_conf(self, subsys, key, value):
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self.configs_set.add((subsys, key))
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self.fs.set_ceph_conf(subsys, key, value)
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def assert_session_count(self, expected, ls_data=None, mds_id=None):
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if ls_data is None:
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ls_data = self.fs.mds_asok(['session', 'ls'], mds_id=mds_id)
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self.assertEqual(expected, len(ls_data), "Expected {0} sessions, found {1}".format(
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expected, len(ls_data)
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))
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def assert_session_state(self, client_id, expected_state):
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self.assertEqual(
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self._session_by_id(
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self.fs.mds_asok(['session', 'ls'])).get(client_id, {'state': None})['state'],
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expected_state)
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def get_session_data(self, client_id):
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return self._session_by_id(client_id)
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def _session_list(self):
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ls_data = self.fs.mds_asok(['session', 'ls'])
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ls_data = [s for s in ls_data if s['state'] not in ['stale', 'closed']]
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return ls_data
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def get_session(self, client_id, session_ls=None):
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if session_ls is None:
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session_ls = self.fs.mds_asok(['session', 'ls'])
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return self._session_by_id(session_ls)[client_id]
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def _session_by_id(self, session_ls):
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return dict([(s['id'], s) for s in session_ls])
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def wait_until_equal(self, get_fn, expect_val, timeout, reject_fn=None):
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period = 5
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elapsed = 0
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while True:
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val = get_fn()
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if val == expect_val:
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return
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elif reject_fn and reject_fn(val):
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raise RuntimeError("wait_until_equal: forbidden value {0} seen".format(val))
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else:
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if elapsed >= timeout:
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raise RuntimeError("Timed out after {0} seconds waiting for {1} (currently {2})".format(
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elapsed, expect_val, val
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))
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else:
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log.debug("wait_until_equal: {0} != {1}, waiting...".format(val, expect_val))
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time.sleep(period)
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elapsed += period
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log.debug("wait_until_equal: success")
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def wait_until_true(self, condition, timeout):
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period = 5
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elapsed = 0
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while True:
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if condition():
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return
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else:
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if elapsed >= timeout:
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raise RuntimeError("Timed out after {0} seconds".format(elapsed))
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else:
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log.debug("wait_until_true: waiting...")
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time.sleep(period)
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elapsed += period
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log.debug("wait_until_true: success")
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def assert_mds_crash(self, daemon_id):
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"""
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Assert that the a particular MDS daemon crashes (block until
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it does)
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"""
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try:
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self.fs.mds_daemons[daemon_id].proc.wait()
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except CommandFailedError as e:
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log.info("MDS '{0}' crashed with status {1} as expected".format(daemon_id, e.exitstatus))
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self.fs.mds_daemons[daemon_id].proc = None
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# Go remove the coredump from the crash, otherwise teuthology.internal.coredump will
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# catch it later and treat it as a failure.
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p = self.fs.mds_daemons[daemon_id].remote.run(args=[
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"sudo", "sysctl", "-n", "kernel.core_pattern"], stdout=StringIO())
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core_pattern = p.stdout.getvalue().strip()
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if os.path.dirname(core_pattern): # Non-default core_pattern with a directory in it
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# We have seen a core_pattern that looks like it's from teuthology's coredump
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# task, so proceed to clear out the core file
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log.info("Clearing core from pattern: {0}".format(core_pattern))
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# Determine the PID of the crashed MDS by inspecting the MDSMap, it had
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# to talk to the mons to get assigned a rank to reach the point of crashing
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addr = self.fs.mon_manager.get_mds_status(daemon_id)['addr']
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pid_str = addr.split("/")[1]
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log.info("Determined crasher PID was {0}".format(pid_str))
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# Substitute PID into core_pattern to get a glob
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core_glob = core_pattern.replace("%p", pid_str)
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core_glob = re.sub("%[a-z]", "*", core_glob) # Match all for all other % tokens
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# Verify that we see the expected single coredump matching the expected pattern
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ls_proc = self.fs.mds_daemons[daemon_id].remote.run(args=[
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"sudo", "ls", run.Raw(core_glob)
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], stdout=StringIO())
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cores = [f for f in ls_proc.stdout.getvalue().strip().split("\n") if f]
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log.info("Enumerated cores: {0}".format(cores))
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self.assertEqual(len(cores), 1)
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log.info("Found core file {0}, deleting it".format(cores[0]))
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self.fs.mds_daemons[daemon_id].remote.run(args=[
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"sudo", "rm", "-f", cores[0]
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])
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else:
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log.info("No core_pattern directory set, nothing to clear (internal.coredump not enabled?)")
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else:
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raise AssertionError("MDS daemon '{0}' did not crash as expected".format(daemon_id))
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