mirror of
https://github.com/ceph/ceph
synced 2024-12-20 02:13:04 +00:00
6ef30d1ed3
Previously this relied on being run in a special cluster configuration that set up standby replay daemons. This change will allow it to live alongside all the 'normal' functional tests. Signed-off-by: John Spray <john.spray@redhat.com>
119 lines
4.5 KiB
Python
119 lines
4.5 KiB
Python
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from StringIO import StringIO
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from tasks.cephfs.cephfs_test_case import CephFSTestCase
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from tasks.workunit import task as workunit
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JOURNAL_FORMAT_LEGACY = 0
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JOURNAL_FORMAT_RESILIENT = 1
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class TestJournalMigration(CephFSTestCase):
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CLIENTS_REQUIRED = 1
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MDSS_REQUIRED = 2
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def test_journal_migration(self):
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old_journal_version = JOURNAL_FORMAT_LEGACY
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new_journal_version = JOURNAL_FORMAT_RESILIENT
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# Pick out two daemons to use
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mds_a, mds_b = sorted(self.mds_cluster.mds_ids[0:2])
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self.mount_a.umount_wait()
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self.fs.mds_stop()
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# Enable standby replay, to cover the bug case #8811 where
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# a standby replay might mistakenly end up trying to rewrite
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# the journal at the same time as an active daemon.
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self.fs.set_ceph_conf('mds', 'mds standby replay', "true")
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self.fs.set_ceph_conf('mds', 'mds standby for rank', "0")
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# Create a filesystem using the older journal format.
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self.fs.set_ceph_conf('mds', 'mds journal format', old_journal_version)
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self.fs.recreate()
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self.fs.mds_restart(mds_id=mds_a)
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self.fs.wait_for_daemons()
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self.assertEqual(self.fs.get_active_names(), [mds_a])
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def replay_names():
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return [s['name']
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for s in self.fs.status().get_replays(fscid = self.fs.id)]
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# Start the standby and wait for it to come up
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self.fs.mds_restart(mds_id=mds_b)
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self.wait_until_equal(
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replay_names,
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[mds_b],
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timeout = 30)
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# Do some client work so that the log is populated with something.
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with self.mount_a.mounted():
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self.mount_a.create_files()
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self.mount_a.check_files() # sanity, this should always pass
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# Run a more substantial workunit so that the length of the log to be
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# coverted is going span at least a few segments
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workunit(self.ctx, {
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'clients': {
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"client.{0}".format(self.mount_a.client_id): ["suites/fsstress.sh"],
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},
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"timeout": "3h"
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})
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# Modify the ceph.conf to ask the MDS to use the new journal format.
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self.fs.set_ceph_conf('mds', 'mds journal format', new_journal_version)
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# Restart the MDS.
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self.fs.mds_fail_restart(mds_id=mds_a)
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self.fs.mds_fail_restart(mds_id=mds_b)
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# This ensures that all daemons come up into a valid state
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self.fs.wait_for_daemons()
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# Check that files created in the initial client workload are still visible
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# in a client mount.
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with self.mount_a.mounted():
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self.mount_a.check_files()
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# Verify that the journal really has been rewritten.
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journal_version = self.fs.get_journal_version()
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if journal_version != new_journal_version:
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raise RuntimeError("Journal was not upgraded, version should be {0} but is {1}".format(
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new_journal_version, journal_version()
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))
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# Verify that cephfs-journal-tool can now read the rewritten journal
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inspect_out = self.fs.journal_tool(["journal", "inspect"])
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if not inspect_out.endswith(": OK"):
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raise RuntimeError("Unexpected journal-tool result: '{0}'".format(
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inspect_out
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))
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self.fs.journal_tool(["event", "get", "json", "--path", "/tmp/journal.json"])
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p = self.fs.tool_remote.run(
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args=[
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"python",
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"-c",
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"import json; print len(json.load(open('/tmp/journal.json')))"
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],
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stdout=StringIO())
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event_count = int(p.stdout.getvalue().strip())
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if event_count < 1000:
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# Approximate value of "lots", expected from having run fsstress
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raise RuntimeError("Unexpectedly few journal events: {0}".format(event_count))
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# Do some client work to check that writing the log is still working
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with self.mount_a.mounted():
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workunit(self.ctx, {
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'clients': {
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"client.{0}".format(self.mount_a.client_id): ["fs/misc/trivial_sync.sh"],
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},
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"timeout": "3h"
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})
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# Check that both an active and a standby replay are still up
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self.assertEqual(len(replay_names()), 1)
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self.assertEqual(len(self.fs.get_active_names()), 1)
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self.assertTrue(self.mds_cluster.mds_daemons[mds_a].running())
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self.assertTrue(self.mds_cluster.mds_daemons[mds_b].running())
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