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-rw-r--r--qa/tasks/cephfs/test_sessionmap.py236
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diff --git a/qa/tasks/cephfs/test_sessionmap.py b/qa/tasks/cephfs/test_sessionmap.py
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+++ b/qa/tasks/cephfs/test_sessionmap.py
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+import time
+import json
+import logging
+from unittest import SkipTest
+
+from tasks.cephfs.fuse_mount import FuseMount
+from teuthology.exceptions import CommandFailedError
+from tasks.cephfs.cephfs_test_case import CephFSTestCase
+from teuthology.misc import sudo_write_file
+
+log = logging.getLogger(__name__)
+
+
+class TestSessionMap(CephFSTestCase):
+ CLIENTS_REQUIRED = 2
+ MDSS_REQUIRED = 2
+
+ def test_tell_session_drop(self):
+ """
+ That when a `tell` command is sent using the python CLI,
+ its MDS session is gone after it terminates
+ """
+ self.mount_a.umount_wait()
+ self.mount_b.umount_wait()
+
+ status = self.fs.status()
+ self.fs.rank_tell(["session", "ls"], status=status)
+
+ ls_data = self.fs.rank_asok(['session', 'ls'], status=status)
+ self.assertEqual(len(ls_data), 0)
+
+ def _get_connection_count(self, status=None):
+ perf = self.fs.rank_asok(["perf", "dump"], status=status)
+ conn = 0
+ for module, dump in perf.items():
+ if "AsyncMessenger::Worker" in module:
+ conn += dump['msgr_active_connections']
+ return conn
+
+ def test_tell_conn_close(self):
+ """
+ That when a `tell` command is sent using the python CLI,
+ the conn count goes back to where it started (i.e. we aren't
+ leaving connections open)
+ """
+ self.mount_a.umount_wait()
+ self.mount_b.umount_wait()
+
+ status = self.fs.status()
+ s = self._get_connection_count(status=status)
+ self.fs.rank_tell(["session", "ls"], status=status)
+ e = self._get_connection_count(status=status)
+
+ self.assertEqual(s, e)
+
+ def test_mount_conn_close(self):
+ """
+ That when a client unmounts, the thread count on the MDS goes back
+ to what it was before the client mounted
+ """
+ self.mount_a.umount_wait()
+ self.mount_b.umount_wait()
+
+ status = self.fs.status()
+ s = self._get_connection_count(status=status)
+ self.mount_a.mount()
+ self.mount_a.wait_until_mounted()
+ self.assertGreater(self._get_connection_count(status=status), s)
+ self.mount_a.umount_wait()
+ e = self._get_connection_count(status=status)
+
+ self.assertEqual(s, e)
+
+ def test_version_splitting(self):
+ """
+ That when many sessions are updated, they are correctly
+ split into multiple versions to obey mds_sessionmap_keys_per_op
+ """
+
+ # Start umounted
+ self.mount_a.umount_wait()
+ self.mount_b.umount_wait()
+
+ # Configure MDS to write one OMAP key at once
+ self.set_conf('mds', 'mds_sessionmap_keys_per_op', 1)
+ self.fs.mds_fail_restart()
+ self.fs.wait_for_daemons()
+
+ # I would like two MDSs, so that I can do an export dir later
+ self.fs.set_max_mds(2)
+ self.fs.wait_for_daemons()
+
+ status = self.fs.status()
+
+ # Bring the clients back
+ self.mount_a.mount()
+ self.mount_b.mount()
+ self.mount_a.create_files() # Kick the client into opening sessions
+ self.mount_b.create_files()
+
+ # See that they've got sessions
+ self.assert_session_count(2, mds_id=self.fs.get_rank(status=status)['name'])
+
+ # See that we persist their sessions
+ self.fs.rank_asok(["flush", "journal"], rank=0, status=status)
+ table_json = json.loads(self.fs.table_tool(["0", "show", "session"]))
+ log.info("SessionMap: {0}".format(json.dumps(table_json, indent=2)))
+ self.assertEqual(table_json['0']['result'], 0)
+ self.assertEqual(len(table_json['0']['data']['sessions']), 2)
+
+ # Now, induce a "force_open_sessions" event by exporting a dir
+ self.mount_a.run_shell(["mkdir", "bravo"])
+ self.mount_a.run_shell(["touch", "bravo/file"])
+ self.mount_b.run_shell(["ls", "-l", "bravo/file"])
+
+ def get_omap_wrs():
+ return self.fs.rank_asok(['perf', 'dump', 'objecter'], rank=1, status=status)['objecter']['omap_wr']
+
+ # Flush so that there are no dirty sessions on rank 1
+ self.fs.rank_asok(["flush", "journal"], rank=1, status=status)
+
+ # Export so that we get a force_open to rank 1 for the two sessions from rank 0
+ initial_omap_wrs = get_omap_wrs()
+ self.fs.rank_asok(['export', 'dir', '/bravo', '1'], rank=0, status=status)
+
+ # This is the critical (if rather subtle) check: that in the process of doing an export dir,
+ # we hit force_open_sessions, and as a result we end up writing out the sessionmap. There
+ # will be two sessions dirtied here, and because we have set keys_per_op to 1, we should see
+ # a single session get written out (the first of the two, triggered by the second getting marked
+ # dirty)
+ # The number of writes is two per session, because the header (sessionmap version) update and
+ # KV write both count. Also, multiply by 2 for each openfile table update.
+ self.wait_until_true(
+ lambda: get_omap_wrs() - initial_omap_wrs == 2*2,
+ timeout=30 # Long enough for an export to get acked
+ )
+
+ # Now end our sessions and check the backing sessionmap is updated correctly
+ self.mount_a.umount_wait()
+ self.mount_b.umount_wait()
+
+ # In-memory sessionmap check
+ self.assert_session_count(0, mds_id=self.fs.get_rank(status=status)['name'])
+
+ # On-disk sessionmap check
+ self.fs.rank_asok(["flush", "journal"], rank=0, status=status)
+ table_json = json.loads(self.fs.table_tool(["0", "show", "session"]))
+ log.info("SessionMap: {0}".format(json.dumps(table_json, indent=2)))
+ self.assertEqual(table_json['0']['result'], 0)
+ self.assertEqual(len(table_json['0']['data']['sessions']), 0)
+
+ def _configure_auth(self, mount, id_name, mds_caps, osd_caps=None, mon_caps=None):
+ """
+ Set up auth credentials for a client mount, and write out the keyring
+ for the client to use.
+ """
+
+ if osd_caps is None:
+ osd_caps = "allow rw"
+
+ if mon_caps is None:
+ mon_caps = "allow r"
+
+ out = self.fs.mon_manager.raw_cluster_cmd(
+ "auth", "get-or-create", "client.{name}".format(name=id_name),
+ "mds", mds_caps,
+ "osd", osd_caps,
+ "mon", mon_caps
+ )
+ mount.client_id = id_name
+ sudo_write_file(mount.client_remote, mount.get_keyring_path(), out)
+ self.set_conf("client.{name}".format(name=id_name), "keyring", mount.get_keyring_path())
+
+ def test_session_reject(self):
+ if not isinstance(self.mount_a, FuseMount):
+ raise SkipTest("Requires FUSE client to inject client metadata")
+
+ self.mount_a.run_shell(["mkdir", "foo"])
+ self.mount_a.run_shell(["mkdir", "foo/bar"])
+ self.mount_a.umount_wait()
+
+ # Mount B will be my rejected client
+ self.mount_b.umount_wait()
+
+ # Configure a client that is limited to /foo/bar
+ self._configure_auth(self.mount_b, "badguy", "allow rw path=/foo/bar")
+ # Check he can mount that dir and do IO
+ self.mount_b.mount(mount_path="/foo/bar")
+ self.mount_b.wait_until_mounted()
+ self.mount_b.create_destroy()
+ self.mount_b.umount_wait()
+
+ # Configure the client to claim that its mount point metadata is /baz
+ self.set_conf("client.badguy", "client_metadata", "root=/baz")
+ # Try to mount the client, see that it fails
+ with self.assert_cluster_log("client session with non-allowable root '/baz' denied"):
+ with self.assertRaises(CommandFailedError):
+ self.mount_b.mount(mount_path="/foo/bar")
+
+ def test_session_evict_blacklisted(self):
+ """
+ Check that mds evicts blacklisted client
+ """
+ if not isinstance(self.mount_a, FuseMount):
+ self.skipTest("Requires FUSE client to use is_blacklisted()")
+
+ self.fs.set_max_mds(2)
+ self.fs.wait_for_daemons()
+ status = self.fs.status()
+
+ self.mount_a.run_shell(["mkdir", "d0", "d1"])
+ self.mount_a.setfattr("d0", "ceph.dir.pin", "0")
+ self.mount_a.setfattr("d1", "ceph.dir.pin", "1")
+ self._wait_subtrees(status, 0, [('/d0', 0), ('/d1', 1)])
+
+ self.mount_a.run_shell(["touch", "d0/f0"])
+ self.mount_a.run_shell(["touch", "d1/f0"])
+ self.mount_b.run_shell(["touch", "d0/f1"])
+ self.mount_b.run_shell(["touch", "d1/f1"])
+
+ self.assert_session_count(2, mds_id=self.fs.get_rank(rank=0, status=status)['name'])
+ self.assert_session_count(2, mds_id=self.fs.get_rank(rank=1, status=status)['name'])
+
+ mount_a_client_id = self.mount_a.get_global_id()
+ self.fs.mds_asok(['session', 'evict', "%s" % mount_a_client_id],
+ mds_id=self.fs.get_rank(rank=0, status=status)['name'])
+ self.wait_until_true(lambda: self.mount_a.is_blacklisted(), timeout=30)
+
+ # 10 seconds should be enough for evicting client
+ time.sleep(10)
+ self.assert_session_count(1, mds_id=self.fs.get_rank(rank=0, status=status)['name'])
+ self.assert_session_count(1, mds_id=self.fs.get_rank(rank=1, status=status)['name'])
+
+ self.mount_a.kill_cleanup()
+ self.mount_a.mount()
+ self.mount_a.wait_until_mounted()