--- /dev/null
+"""
+Backfill_toofull
+"""
+import logging
+import time
+from tasks import ceph_manager
+from tasks.util.rados import rados
+from teuthology import misc as teuthology
+
+log = logging.getLogger(__name__)
+
+def wait_for_pg_state(manager, pgid, state, to_osd):
+ log.debug("waiting for pg %s state is %s" % (pgid, state))
+ for i in range(300):
+ time.sleep(5)
+ manager.flush_pg_stats([0, 1, 2, 3])
+ pgs = manager.get_pg_stats()
+ pg = next((pg for pg in pgs if pg['pgid'] == pgid), None)
+ log.info('pg=%s' % pg);
+ assert pg
+ status = pg['state'].split('+')
+ if 'active' not in status:
+ log.debug('not active')
+ continue
+ if state not in status:
+ log.debug('not %s' % state)
+ continue
+ assert to_osd in pg['up']
+ return
+ assert False, '%s not in %s' % (pgid, state)
+
+
+def task(ctx, config):
+ """
+ Test backfill reservation calculates "toofull" condition correctly.
+
+ A pretty rigid cluster is brought up and tested by this task
+ """
+ if config is None:
+ config = {}
+ assert isinstance(config, dict), \
+ 'backfill_toofull task only accepts a dict for configuration'
+ first_mon = teuthology.get_first_mon(ctx, config)
+ (mon,) = ctx.cluster.only(first_mon).remotes.keys()
+
+ manager = ceph_manager.CephManager(
+ mon,
+ ctx=ctx,
+ logger=log.getChild('ceph_manager'),
+ )
+
+ profile = config.get('erasure_code_profile', {
+ 'k': '2',
+ 'm': '1',
+ 'crush-failure-domain': 'osd'
+ })
+ profile_name = profile.get('name', 'backfill_toofull')
+ manager.create_erasure_code_profile(profile_name, profile)
+ pool = manager.create_pool_with_unique_name(
+ pg_num=1,
+ erasure_code_profile_name=profile_name,
+ min_size=2)
+ manager.raw_cluster_cmd('osd', 'pool', 'set', pool,
+ 'pg_autoscale_mode', 'off')
+
+ manager.flush_pg_stats([0, 1, 2, 3])
+ manager.wait_for_clean()
+
+ pool_id = manager.get_pool_num(pool)
+ pgid = '%d.0' % pool_id
+ pgs = manager.get_pg_stats()
+ acting = next((pg['acting'] for pg in pgs if pg['pgid'] == pgid), None)
+ log.debug("acting=%s" % acting)
+ assert acting
+ primary = acting[0]
+ target = acting[1]
+
+ log.debug("write some data")
+ rados(ctx, mon, ['-p', pool, 'bench', '60', 'write', '--no-cleanup'])
+ df = manager.get_osd_df(target)
+ log.debug("target osd df: %s" % df)
+
+ total_kb = df['kb']
+ used_kb = df['kb_used']
+
+ log.debug("pause recovery")
+ manager.raw_cluster_cmd('osd', 'set', 'noout')
+ manager.raw_cluster_cmd('osd', 'set', 'nobackfill')
+ manager.raw_cluster_cmd('osd', 'set', 'norecover')
+
+ log.debug("stop tartget osd %s" % target)
+ manager.kill_osd(target)
+ manager.wait_till_active()
+
+ pgs = manager.get_pg_stats()
+ pg = next((pg for pg in pgs if pg['pgid'] == pgid), None)
+ log.debug('pg=%s' % pg)
+ assert pg
+
+ log.debug("re-write data")
+ rados(ctx, mon, ['-p', pool, 'cleanup'])
+ time.sleep(10)
+ rados(ctx, mon, ['-p', pool, 'bench', '60', 'write', '--no-cleanup'])
+
+ df = manager.get_osd_df(primary)
+ log.debug("primary osd df: %s" % df)
+
+ primary_used_kb = df['kb_used']
+
+ log.info("test backfill reservation rejected with toofull")
+
+ # We set backfillfull ratio less than new data size and expect the pg
+ # entering backfill_toofull state.
+ #
+ # We also need to update nearfull ratio to prevent "full ratio(s) out of order".
+
+ backfillfull = 0.9 * primary_used_kb / total_kb
+ nearfull = backfillfull * 0.9
+
+ log.debug("update nearfull ratio to %s and backfillfull ratio to %s" %
+ (nearfull, backfillfull))
+ manager.raw_cluster_cmd('osd', 'set-nearfull-ratio',
+ '{:.3f}'.format(nearfull))
+ manager.raw_cluster_cmd('osd', 'set-backfillfull-ratio',
+ '{:.3f}'.format(backfillfull))
+
+ log.debug("start tartget osd %s" % target)
+
+ manager.revive_osd(target)
+ manager.wait_for_active()
+ manager.wait_till_osd_is_up(target)
+
+ wait_for_pg_state(manager, pgid, 'backfill_toofull', target)
+
+ log.info("test pg not enter backfill_toofull after restarting backfill")
+
+ # We want to set backfillfull ratio to be big enough for the target to
+ # successfully backfill new data but smaller than the sum of old and new
+ # data, so if the osd backfill reservation incorrectly calculates "toofull"
+ # the test will detect this (fail).
+ #
+ # We also need to update nearfull ratio to prevent "full ratio(s) out of order".
+
+ backfillfull = min(used_kb + primary_used_kb, total_kb * 0.9) / total_kb
+ nearfull_min = max(used_kb, primary_used_kb) / total_kb
+ delta = backfillfull - nearfull_min
+ nearfull = nearfull_min + delta * 0.1
+ backfillfull = nearfull_min + delta * 0.2
+
+ log.debug("update nearfull ratio to %s and backfillfull ratio to %s" %
+ (nearfull, backfillfull))
+ manager.raw_cluster_cmd('osd', 'set-nearfull-ratio',
+ '{:.3f}'.format(nearfull))
+ manager.raw_cluster_cmd('osd', 'set-backfillfull-ratio',
+ '{:.3f}'.format(backfillfull))
+
+ wait_for_pg_state(manager, pgid, 'backfilling', target)
+
+ pgs = manager.get_pg_stats()
+ pg = next((pg for pg in pgs if pg['pgid'] == pgid), None)
+ log.debug('pg=%s' % pg)
+ assert pg
+
+ log.debug("interrupt %s backfill" % target)
+ manager.mark_down_osd(target)
+ # after marking the target osd down it will automatically be
+ # up soon again
+
+ log.debug("resume recovery")
+ manager.raw_cluster_cmd('osd', 'unset', 'noout')
+ manager.raw_cluster_cmd('osd', 'unset', 'nobackfill')
+ manager.raw_cluster_cmd('osd', 'unset', 'norecover')
+
+ # wait for everything to peer, backfill and recover
+ manager.wait_for_clean()
+
+ pgs = manager.get_pg_stats()
+ pg = next((pg for pg in pgs if pg['pgid'] == pgid), None)
+ log.info('pg=%s' % pg)
+ assert pg
+ assert 'clean' in pg['state'].split('+')
projects / ceph.git / commitdiff