From: Sage Weil <sage@newdream.net>
Date: Sat, 24 Mar 2012 23:42:47 +0000 (-0700)
Subject: add osd_recovery task to test divergent osd logs
X-Git-Tag: 1.1.0~2592
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=397e7f2f7bb4e69a3432b9bf7a3feabe779733f0;p=teuthology.git

add osd_recovery task to test divergent osd logs
---

diff --git a/teuthology/task/osd_recovery.py b/teuthology/task/osd_recovery.py
new file mode 100644
index 000000000..9b5252184
--- /dev/null
+++ b/teuthology/task/osd_recovery.py
@@ -0,0 +1,95 @@
+import logging
+import ceph_manager
+import time
+from teuthology import misc as teuthology
+
+
+log = logging.getLogger(__name__)
+
+
+def rados_start(remote, cmd):
+    log.info("rados %s" % ' '.join(cmd))
+    pre = [
+        'LD_LIBRARY_PATH=/tmp/cephtest/binary/usr/local/lib',
+        '/tmp/cephtest/enable-coredump',
+        '/tmp/cephtest/binary/usr/local/bin/ceph-coverage',
+        '/tmp/cephtest/archive/coverage',
+        '/tmp/cephtest/binary/usr/local/bin/rados',
+        '-c', '/tmp/cephtest/ceph.conf',
+        ];
+    pre.extend(cmd)
+    proc = remote.run(
+        args=pre,
+        wait=False,
+        )
+    return proc
+
+def task(ctx, config):
+    """
+    Test (non-backfill) recovery
+    """
+    if config is None:
+        config = {}
+    assert isinstance(config, dict), \
+        'task only accepts a dict for configuration'
+    first_mon = teuthology.get_first_mon(ctx, config)
+    (mon,) = ctx.cluster.only(first_mon).remotes.iterkeys()
+    
+    num_osds = teuthology.num_instances_of_type(ctx.cluster, 'osd')
+    log.info('num_osds is %s' % num_osds)
+    assert num_osds == 3        
+
+    manager = ceph_manager.CephManager(
+        mon,
+        ctx=ctx,
+        logger=log.getChild('ceph_manager'),
+        )
+
+    while manager.get_osd_status()['up'] < 3:
+        manager.sleep(10)
+    manager.raw_cluster_cmd('tell', 'osd.0', 'flush_pg_stats')
+    manager.raw_cluster_cmd('tell', 'osd.1', 'flush_pg_stats')
+    manager.raw_cluster_cmd('tell', 'osd.2', 'flush_pg_stats')
+    manager.wait_for_clean()
+
+    # write some new data
+    p = rados_start(mon, ['-p', 'rbd', 'bench', '60', 'write', '-b', '4096'])
+
+    time.sleep(15)
+
+    # trigger a divergent target:
+    #  blackhole + restart osd.1 (shorter log)
+    manager.blackhole_kill_osd(1)
+    #  kill osd.2 (longer log... we'll make it divergent below)
+    manager.kill_osd(2)
+    time.sleep(2)
+    manager.revive_osd(1)
+
+    # wait for our writes to complete + succeed
+    err = p.exitstatus.get()
+    log.info('err is %d' % err)
+
+    # cluster must repeer
+    manager.raw_cluster_cmd('tell', 'osd.0', 'flush_pg_stats')
+    manager.raw_cluster_cmd('tell', 'osd.1', 'flush_pg_stats')
+    manager.wait_for_active_or_down()
+
+    # write some more (make sure osd.2 really is divergent)
+    p = rados_start(mon, ['-p', 'rbd', 'bench', '15', 'write', '-b', '4096'])
+    err = p.exitstatus.get();
+
+    # revive divergent osd
+    manager.revive_osd(2)
+
+    while manager.get_osd_status()['up'] < 3:
+        log.info('waiting a bit...')
+        manager.sleep(2)
+    log.info('3 are up!')
+
+    # cluster must recover
+    manager.raw_cluster_cmd('tell', 'osd.0', 'flush_pg_stats')
+    manager.raw_cluster_cmd('tell', 'osd.1', 'flush_pg_stats')
+    manager.raw_cluster_cmd('tell', 'osd.2', 'flush_pg_stats')
+    manager.wait_for_clean()
+
+