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import logging
import random
log = logging.getLogger(__name__)
def pg_num_in_all_states(pgs, *states):
return sum(1 for state in pgs.itervalues()
if all(s in state for s in states))
def pg_num_in_any_state(pgs, *states):
return sum(1 for state in pgs.itervalues()
if any(s in state for s in states))
def test_create_from_mon(ctx, config):
"""
osd should stop creating new pools if the number of pg it servers
exceeds the max-pg-per-osd setting, and it should resume the previously
suspended pg creations once the its pg number drops down below the setting
How it works::
1. set the hard limit of pg-per-osd to "2"
2. create pool.a with pg_num=2
# all pgs should be active+clean
2. create pool.b with pg_num=2
# new pgs belonging to this pool should be unknown (the primary osd
reaches the limit) or creating (replica osd reaches the limit)
3. remove pool.a
4. all pg belonging to pool.b should be active+clean
"""
pg_num = config.get('pg_num', 2)
manager = ctx.managers['ceph']
log.info('1. creating pool.a')
pool_a = manager.create_pool_with_unique_name(pg_num)
manager.wait_for_clean()
assert manager.get_num_active_clean() == pg_num
log.info('2. creating pool.b')
pool_b = manager.create_pool_with_unique_name(pg_num)
pg_states = manager.wait_till_pg_convergence(300)
pg_created = pg_num_in_all_states(pg_states, 'active', 'clean')
assert pg_created == pg_num
pg_pending = pg_num_in_any_state(pg_states, 'unknown', 'creating')
assert pg_pending == pg_num
log.info('3. removing pool.a')
manager.remove_pool(pool_a)
pg_states = manager.wait_till_pg_convergence(300)
assert len(pg_states) == pg_num
pg_created = pg_num_in_all_states(pg_states, 'active', 'clean')
assert pg_created == pg_num
# cleanup
manager.remove_pool(pool_b)
def test_create_from_peer(ctx, config):
"""
osd should stop creating new pools if the number of pg it servers
exceeds the max-pg-per-osd setting, and it should resume the previously
suspended pg creations once the its pg number drops down below the setting
How it works::
0. create 4 OSDs.
1. create pool.a with pg_num=1, size=2
pg will be mapped to osd.0, and osd.1, and it should be active+clean
2. create pool.b with pg_num=1, size=2.
if the pgs stuck in creating, delete the pool since the pool and try
again, eventually we'll get the pool to land on the other 2 osds that
aren't occupied by pool.a. (this will also verify that pgs for deleted
pools get cleaned out of the creating wait list.)
3. mark an osd out. verify that some pgs get stuck stale or peering.
4. delete a pool, verify pgs go active.
"""
pg_num = config.get('pg_num', 1)
pool_size = config.get('pool_size', 2)
from_primary = config.get('from_primary', True)
manager = ctx.managers['ceph']
log.info('1. creating pool.a')
pool_a = manager.create_pool_with_unique_name(pg_num)
manager.wait_for_clean()
assert manager.get_num_active_clean() == pg_num
log.info('2. creating pool.b')
while True:
pool_b = manager.create_pool_with_unique_name(pg_num)
pg_states = manager.wait_till_pg_convergence(300)
pg_created = pg_num_in_all_states(pg_states, 'active', 'clean')
assert pg_created >= pg_num
pg_pending = pg_num_in_any_state(pg_states, 'unknown', 'creating')
assert pg_pending == pg_num * 2 - pg_created
if pg_created == pg_num * 2:
break
manager.remove_pool(pool_b)
log.info('3. mark an osd out')
pg_stats = manager.get_pg_stats()
pg = random.choice(pg_stats)
if from_primary:
victim = pg['acting'][-1]
else:
victim = pg['acting'][0]
manager.mark_out_osd(victim)
pg_states = manager.wait_till_pg_convergence(300)
pg_stuck = pg_num_in_any_state(pg_states, 'activating', 'stale', 'peering')
assert pg_stuck > 0
log.info('4. removing pool.b')
manager.remove_pool(pool_b)
manager.wait_for_clean(30)
# cleanup
manager.remove_pool(pool_a)
def task(ctx, config):
assert isinstance(config, dict), \
'osd_max_pg_per_osd task only accepts a dict for config'
manager = ctx.managers['ceph']
if config.get('test_create_from_mon', True):
test_create_from_mon(ctx, config)
else:
test_create_from_peer(ctx, config)
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