initial code repo

This patch creates initial code repo.

For ceph, luminous stable release will be used for base code,
and next changes and optimization for ceph will be added to it.

For opensds, currently any changes can be upstreamed into original
opensds repo (https://github.com/opensds/opensds), and so stor4nfv
will directly clone opensds code to deploy stor4nfv environment.
And the scripts for deployment based on ceph and opensds will be
put into 'ci' directory.

Change-Id: I46a32218884c75dda2936337604ff03c554648e4
Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com>

1 files changed, 126 insertions, 0 deletions

diff --git a/src/ceph/qa/tasks/osd_max_pg_per_osd.py b/src/ceph/qa/tasks/osd_max_pg_per_osd.py
new file mode 100644
index 0000000..b4e2aa4
--- /dev/null
+++ b/src/ceph/qa/tasks/osd_max_pg_per_osd.py
@@ -0,0 +1,126 @@
+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)