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"""
Special case divergence test
"""
import logging
import time
from teuthology import misc as teuthology
from util.rados import rados
log = logging.getLogger(__name__)
def task(ctx, config):
"""
Test handling of divergent entries with prior_version
prior to log_tail
overrides:
ceph:
conf:
osd:
debug osd: 5
Requires 3 osds on a single test node.
"""
if config is None:
config = {}
assert isinstance(config, dict), \
'divergent_priors task only accepts a dict for configuration'
manager = ctx.managers['ceph']
while len(manager.get_osd_status()['up']) < 3:
time.sleep(10)
manager.flush_pg_stats([0, 1, 2])
manager.raw_cluster_cmd('osd', 'set', 'noout')
manager.raw_cluster_cmd('osd', 'set', 'noin')
manager.raw_cluster_cmd('osd', 'set', 'nodown')
manager.wait_for_clean()
# something that is always there
dummyfile = '/etc/fstab'
dummyfile2 = '/etc/resolv.conf'
# create 1 pg pool
log.info('creating foo')
manager.raw_cluster_cmd('osd', 'pool', 'create', 'foo', '1')
osds = [0, 1, 2]
for i in osds:
manager.set_config(i, osd_min_pg_log_entries=10)
manager.set_config(i, osd_max_pg_log_entries=10)
manager.set_config(i, osd_pg_log_trim_min=5)
# determine primary
divergent = manager.get_pg_primary('foo', 0)
log.info("primary and soon to be divergent is %d", divergent)
non_divergent = list(osds)
non_divergent.remove(divergent)
log.info('writing initial objects')
first_mon = teuthology.get_first_mon(ctx, config)
(mon,) = ctx.cluster.only(first_mon).remotes.iterkeys()
# write 100 objects
for i in range(100):
rados(ctx, mon, ['-p', 'foo', 'put', 'existing_%d' % i, dummyfile])
manager.wait_for_clean()
# blackhole non_divergent
log.info("blackholing osds %s", str(non_divergent))
for i in non_divergent:
manager.set_config(i, objectstore_blackhole=1)
DIVERGENT_WRITE = 5
DIVERGENT_REMOVE = 5
# Write some soon to be divergent
log.info('writing divergent objects')
for i in range(DIVERGENT_WRITE):
rados(ctx, mon, ['-p', 'foo', 'put', 'existing_%d' % i,
dummyfile2], wait=False)
# Remove some soon to be divergent
log.info('remove divergent objects')
for i in range(DIVERGENT_REMOVE):
rados(ctx, mon, ['-p', 'foo', 'rm',
'existing_%d' % (i + DIVERGENT_WRITE)], wait=False)
time.sleep(10)
mon.run(
args=['killall', '-9', 'rados'],
wait=True,
check_status=False)
# kill all the osds but leave divergent in
log.info('killing all the osds')
for i in osds:
manager.kill_osd(i)
for i in osds:
manager.mark_down_osd(i)
for i in non_divergent:
manager.mark_out_osd(i)
# bring up non-divergent
log.info("bringing up non_divergent %s", str(non_divergent))
for i in non_divergent:
manager.revive_osd(i)
for i in non_divergent:
manager.mark_in_osd(i)
# write 1 non-divergent object (ensure that old divergent one is divergent)
objname = "existing_%d" % (DIVERGENT_WRITE + DIVERGENT_REMOVE)
log.info('writing non-divergent object ' + objname)
rados(ctx, mon, ['-p', 'foo', 'put', objname, dummyfile2])
manager.wait_for_recovery()
# ensure no recovery of up osds first
log.info('delay recovery')
for i in non_divergent:
manager.wait_run_admin_socket(
'osd', i, ['set_recovery_delay', '100000'])
# bring in our divergent friend
log.info("revive divergent %d", divergent)
manager.raw_cluster_cmd('osd', 'set', 'noup')
manager.revive_osd(divergent)
log.info('delay recovery divergent')
manager.wait_run_admin_socket(
'osd', divergent, ['set_recovery_delay', '100000'])
manager.raw_cluster_cmd('osd', 'unset', 'noup')
while len(manager.get_osd_status()['up']) < 3:
time.sleep(10)
log.info('wait for peering')
rados(ctx, mon, ['-p', 'foo', 'put', 'foo', dummyfile])
# At this point the divergent_priors should have been detected
log.info("killing divergent %d", divergent)
manager.kill_osd(divergent)
log.info("reviving divergent %d", divergent)
manager.revive_osd(divergent)
time.sleep(20)
log.info('allowing recovery')
# Set osd_recovery_delay_start back to 0 and kick the queue
for i in osds:
manager.raw_cluster_cmd('tell', 'osd.%d' % i, 'debug',
'kick_recovery_wq', ' 0')
log.info('reading divergent objects')
for i in range(DIVERGENT_WRITE + DIVERGENT_REMOVE):
exit_status = rados(ctx, mon, ['-p', 'foo', 'get', 'existing_%d' % i,
'/tmp/existing'])
assert exit_status is 0
log.info("success")
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