mirror of
https://github.com/ceph/ceph
synced 2024-12-23 20:03:56 +00:00
625868974b
Python 3.7 now shows a warning as below. /usr/bin/ceph:128: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop working import rados This patch addresses the that particular issue. Signed-off-by: Ganesh Maharaj Mahalingam <ganesh.mahalingam@intel.com>
154 lines
5.2 KiB
Python
154 lines
5.2 KiB
Python
"""
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Test CephFS scrub (distinct from OSD scrub) functionality
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"""
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import logging
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import os
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import traceback
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try:
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from collections.abc import namedtuple
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except ImportError:
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from collections import namedtuple
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from teuthology.orchestra.run import CommandFailedError
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from tasks.cephfs.cephfs_test_case import CephFSTestCase, for_teuthology
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log = logging.getLogger(__name__)
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ValidationError = namedtuple("ValidationError", ["exception", "backtrace"])
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class Workload(CephFSTestCase):
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def __init__(self, filesystem, mount):
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self._mount = mount
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self._filesystem = filesystem
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self._initial_state = None
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# Accumulate backtraces for every failed validation, and return them. Backtraces
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# are rather verbose, but we only see them when something breaks, and they
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# let us see which check failed without having to decorate each check with
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# a string
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self._errors = []
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def write(self):
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"""
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Write the workload files to the mount
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"""
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raise NotImplementedError()
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def validate(self):
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"""
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Read from the mount and validate that the workload files are present (i.e. have
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survived or been reconstructed from the test scenario)
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"""
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raise NotImplementedError()
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def damage(self):
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"""
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Damage the filesystem pools in ways that will be interesting to recover from. By
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default just wipe everything in the metadata pool
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"""
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# Delete every object in the metadata pool
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objects = self._filesystem.rados(["ls"]).split("\n")
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for o in objects:
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self._filesystem.rados(["rm", o])
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def flush(self):
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"""
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Called after client unmount, after write: flush whatever you want
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"""
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self._filesystem.mds_asok(["flush", "journal"])
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class BacktraceWorkload(Workload):
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"""
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Single file, single directory, wipe the backtrace and check it.
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"""
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def write(self):
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self._mount.run_shell(["mkdir", "subdir"])
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self._mount.write_n_mb("subdir/sixmegs", 6)
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def validate(self):
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st = self._mount.stat("subdir/sixmegs")
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self._filesystem.mds_asok(["flush", "journal"])
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bt = self._filesystem.read_backtrace(st['st_ino'])
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parent = bt['ancestors'][0]['dname']
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self.assertEqual(parent, 'sixmegs')
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return self._errors
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def damage(self):
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st = self._mount.stat("subdir/sixmegs")
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self._filesystem.mds_asok(["flush", "journal"])
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self._filesystem._write_data_xattr(st['st_ino'], "parent", "")
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class DupInodeWorkload(Workload):
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"""
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Duplicate an inode and try scrubbing it twice."
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"""
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def write(self):
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self._mount.run_shell(["mkdir", "parent"])
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self._mount.run_shell(["mkdir", "parent/child"])
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self._mount.write_n_mb("parent/parentfile", 6)
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self._mount.write_n_mb("parent/child/childfile", 6)
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def damage(self):
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temp_bin_path = "/tmp/10000000000.00000000_omap.bin"
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self._mount.umount()
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self._filesystem.mds_asok(["flush", "journal"])
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self._filesystem.mds_stop()
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self._filesystem.rados(["getomapval", "10000000000.00000000",
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"parentfile_head", temp_bin_path])
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self._filesystem.rados(["setomapval", "10000000000.00000000",
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"shadow_head"], stdin_file=temp_bin_path)
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self._filesystem.set_ceph_conf('mds', 'mds hack allow loading invalid metadata', True)
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self._filesystem.mds_restart()
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self._filesystem.wait_for_daemons()
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def validate(self):
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out_json = self._filesystem.mds_asok(["scrub_path", "/", "recursive", "repair"])
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self.assertNotEqual(out_json, None)
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self.assertTrue(self._filesystem.are_daemons_healthy())
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return self._errors
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class TestScrub(CephFSTestCase):
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MDSS_REQUIRED = 1
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def _scrub(self, workload, workers=1):
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"""
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That when all objects in metadata pool are removed, we can rebuild a metadata pool
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based on the contents of a data pool, and a client can see and read our files.
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"""
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# First, inject some files
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workload.write()
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# are off by default, but in QA we need to explicitly disable them)
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self.fs.set_ceph_conf('mds', 'mds verify scatter', False)
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self.fs.set_ceph_conf('mds', 'mds debug scatterstat', False)
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# Apply any data damage the workload wants
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workload.damage()
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out_json = self.fs.mds_asok(["scrub_path", "/", "recursive", "repair"])
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self.assertNotEqual(out_json, None)
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# See that the files are present and correct
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errors = workload.validate()
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if errors:
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log.error("Validation errors found: {0}".format(len(errors)))
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for e in errors:
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log.error(e.exception)
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log.error(e.backtrace)
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raise AssertionError("Validation failed, first error: {0}\n{1}".format(
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errors[0].exception, errors[0].backtrace
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))
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def test_scrub_backtrace(self):
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self._scrub(BacktraceWorkload(self.fs, self.mount_a))
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def test_scrub_dup_inode(self):
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self._scrub(DupInodeWorkload(self.fs, self.mount_a))
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