mirror of
https://github.com/ceph/ceph
synced 2024-12-21 19:02:10 +00:00
86 lines
3.2 KiB
Python
86 lines
3.2 KiB
Python
|
|
import logging
|
|
import contextlib
|
|
import time
|
|
import ceph_manager
|
|
from teuthology import misc
|
|
from teuthology.orchestra.run import CommandFailedError, Raw
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
@contextlib.contextmanager
|
|
def task(ctx, config):
|
|
"""
|
|
Go through filesystem creation with a synthetic failure in an MDS
|
|
in its 'up:creating' state, to exercise the retry behaviour.
|
|
"""
|
|
# Grab handles to the teuthology objects of interest
|
|
mdslist = list(misc.all_roles_of_type(ctx.cluster, 'mds'))
|
|
if len(mdslist) != 1:
|
|
# Require exactly one MDS, the code path for creation failure when
|
|
# a standby is available is different
|
|
raise RuntimeError("This task requires exactly one MDS")
|
|
|
|
mds_id = mdslist[0]
|
|
(mds_remote,) = ctx.cluster.only('mds.{_id}'.format(_id=mds_id)).remotes.iterkeys()
|
|
manager = ceph_manager.CephManager(
|
|
mds_remote, ctx=ctx, logger=log.getChild('ceph_manager'),
|
|
)
|
|
|
|
# Stop MDS
|
|
manager.raw_cluster_cmd('mds', 'set', "max_mds", "0")
|
|
mds = ctx.daemons.get_daemon('mds', mds_id)
|
|
mds.stop()
|
|
manager.raw_cluster_cmd('mds', 'fail', mds_id)
|
|
|
|
# Reset the filesystem so that next start will go into CREATING
|
|
manager.raw_cluster_cmd('fs', 'rm', "default", "--yes-i-really-mean-it")
|
|
manager.raw_cluster_cmd('fs', 'new', "default", "metadata", "data")
|
|
|
|
# Start the MDS with mds_kill_create_at set, it will crash during creation
|
|
mds.restart_with_args(["--mds_kill_create_at=1"])
|
|
try:
|
|
mds.wait_for_exit()
|
|
except CommandFailedError as e:
|
|
if e.exitstatus == 1:
|
|
log.info("MDS creation killed as expected")
|
|
else:
|
|
log.error("Unexpected status code %s" % e.exitstatus)
|
|
raise
|
|
|
|
# Since I have intentionally caused a crash, I will clean up the resulting core
|
|
# file to avoid task.internal.coredump seeing it as a failure.
|
|
log.info("Removing core file from synthetic MDS failure")
|
|
mds_remote.run(args=['rm', '-f', Raw("{archive}/coredump/*.core".format(archive=misc.get_archive_dir(ctx)))])
|
|
|
|
# It should have left the MDS map state still in CREATING
|
|
status = manager.get_mds_status(mds_id)
|
|
assert status['state'] == 'up:creating'
|
|
|
|
# Start the MDS again without the kill flag set, it should proceed with creation successfully
|
|
mds.restart()
|
|
|
|
# Wait for state ACTIVE
|
|
t = 0
|
|
create_timeout = 120
|
|
while True:
|
|
status = manager.get_mds_status(mds_id)
|
|
if status['state'] == 'up:active':
|
|
log.info("MDS creation completed successfully")
|
|
break
|
|
elif status['state'] == 'up:creating':
|
|
log.info("MDS still in creating state")
|
|
if t > create_timeout:
|
|
log.error("Creating did not complete within %ss" % create_timeout)
|
|
raise RuntimeError("Creating did not complete within %ss" % create_timeout)
|
|
t += 1
|
|
time.sleep(1)
|
|
else:
|
|
log.error("Unexpected MDS state: %s" % status['state'])
|
|
assert(status['state'] in ['up:active', 'up:creating'])
|
|
|
|
# The system should be back up in a happy healthy state, go ahead and run any further tasks
|
|
# inside this context.
|
|
yield
|