+++ /dev/null
-
-from StringIO import StringIO
-from tasks.cephfs.cephfs_test_case import CephFSTestCase
-from tasks.workunit import task as workunit
-
-JOURNAL_FORMAT_LEGACY = 0
-JOURNAL_FORMAT_RESILIENT = 1
-
-
-class TestJournalMigration(CephFSTestCase):
- CLIENTS_REQUIRED = 1
- MDSS_REQUIRED = 2
-
- def test_journal_migration(self):
- old_journal_version = JOURNAL_FORMAT_LEGACY
- new_journal_version = JOURNAL_FORMAT_RESILIENT
-
- # Pick out two daemons to use
- mds_a, mds_b = sorted(self.mds_cluster.mds_ids[0:2])
-
- self.mount_a.umount_wait()
- self.fs.mds_stop()
-
- # Enable standby replay, to cover the bug case #8811 where
- # a standby replay might mistakenly end up trying to rewrite
- # the journal at the same time as an active daemon.
- self.fs.set_ceph_conf('mds', 'mds standby replay', "true")
- self.fs.set_ceph_conf('mds', 'mds standby for rank', "0")
-
- # Create a filesystem using the older journal format.
- self.fs.set_ceph_conf('mds', 'mds journal format', old_journal_version)
- self.fs.recreate()
- self.fs.mds_restart(mds_id=mds_a)
- self.fs.wait_for_daemons()
- self.assertEqual(self.fs.get_active_names(), [mds_a])
-
- def replay_names():
- return [s['name']
- for s in self.fs.status().get_replays(fscid = self.fs.id)]
-
- # Start the standby and wait for it to come up
- self.fs.mds_restart(mds_id=mds_b)
- self.wait_until_equal(
- replay_names,
- [mds_b],
- timeout = 30)
-
- # Do some client work so that the log is populated with something.
- with self.mount_a.mounted():
- self.mount_a.create_files()
- self.mount_a.check_files() # sanity, this should always pass
-
- # Run a more substantial workunit so that the length of the log to be
- # coverted is going span at least a few segments
- workunit(self.ctx, {
- 'clients': {
- "client.{0}".format(self.mount_a.client_id): ["suites/fsstress.sh"],
- },
- "timeout": "3h"
- })
-
- # Modify the ceph.conf to ask the MDS to use the new journal format.
- self.fs.set_ceph_conf('mds', 'mds journal format', new_journal_version)
-
- # Restart the MDS.
- self.fs.mds_fail_restart(mds_id=mds_a)
- self.fs.mds_fail_restart(mds_id=mds_b)
-
- # This ensures that all daemons come up into a valid state
- self.fs.wait_for_daemons()
-
- # Check that files created in the initial client workload are still visible
- # in a client mount.
- with self.mount_a.mounted():
- self.mount_a.check_files()
-
- # Verify that the journal really has been rewritten.
- journal_version = self.fs.get_journal_version()
- if journal_version != new_journal_version:
- raise RuntimeError("Journal was not upgraded, version should be {0} but is {1}".format(
- new_journal_version, journal_version()
- ))
-
- # Verify that cephfs-journal-tool can now read the rewritten journal
- inspect_out = self.fs.journal_tool(["journal", "inspect"])
- if not inspect_out.endswith(": OK"):
- raise RuntimeError("Unexpected journal-tool result: '{0}'".format(
- inspect_out
- ))
-
- self.fs.journal_tool(["event", "get", "json", "--path", "/tmp/journal.json"])
- p = self.fs.tool_remote.run(
- args=[
- "python",
- "-c",
- "import json; print len(json.load(open('/tmp/journal.json')))"
- ],
- stdout=StringIO())
- event_count = int(p.stdout.getvalue().strip())
- if event_count < 1000:
- # Approximate value of "lots", expected from having run fsstress
- raise RuntimeError("Unexpectedly few journal events: {0}".format(event_count))
-
- # Do some client work to check that writing the log is still working
- with self.mount_a.mounted():
- workunit(self.ctx, {
- 'clients': {
- "client.{0}".format(self.mount_a.client_id): ["fs/misc/trivial_sync.sh"],
- },
- "timeout": "3h"
- })
-
- # Check that both an active and a standby replay are still up
- self.assertEqual(len(replay_names()), 1)
- self.assertEqual(len(self.fs.get_active_names()), 1)
- self.assertTrue(self.mds_cluster.mds_daemons[mds_a].running())
- self.assertTrue(self.mds_cluster.mds_daemons[mds_b].running())
-
Code Review / stor4nfv.git / blobdiff