mirror of
https://github.com/ceph/ceph
synced 2024-12-29 06:52:35 +00:00
5c24d91327
Mostly we should wait the mountpoint to get ready, especially for the fuse mountpoint, sometimes it may take a few seconds to get ready. Fixes: https://tracker.ceph.com/issues/44044 Signed-off-by: Xiubo Li <xiubli@redhat.com>
299 lines
11 KiB
Python
299 lines
11 KiB
Python
|
|
"""
|
|
Test that the forward scrub functionality can traverse metadata and apply
|
|
requested tags, on well formed metadata.
|
|
|
|
This is *not* the real testing for forward scrub, which will need to test
|
|
how the functionality responds to damaged metadata.
|
|
|
|
"""
|
|
import json
|
|
|
|
import logging
|
|
import six
|
|
|
|
from collections import namedtuple
|
|
from io import BytesIO
|
|
from textwrap import dedent
|
|
|
|
from teuthology.orchestra.run import CommandFailedError
|
|
from tasks.cephfs.cephfs_test_case import CephFSTestCase
|
|
|
|
import struct
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
ValidationError = namedtuple("ValidationError", ["exception", "backtrace"])
|
|
|
|
|
|
class TestForwardScrub(CephFSTestCase):
|
|
MDSS_REQUIRED = 1
|
|
|
|
def _read_str_xattr(self, pool, obj, attr):
|
|
"""
|
|
Read a ceph-encoded string from a rados xattr
|
|
"""
|
|
output = self.fs.rados(["getxattr", obj, attr], pool=pool,
|
|
stdout_data=BytesIO())
|
|
strlen = struct.unpack('i', output[0:4])[0]
|
|
return six.ensure_str(output[4:(4 + strlen)], encoding='ascii')
|
|
|
|
def _get_paths_to_ino(self):
|
|
inos = {}
|
|
p = self.mount_a.run_shell(["find", "./"])
|
|
paths = p.stdout.getvalue().strip().split()
|
|
for path in paths:
|
|
inos[path] = self.mount_a.path_to_ino(path)
|
|
|
|
return inos
|
|
|
|
def test_apply_tag(self):
|
|
self.mount_a.run_shell(["mkdir", "parentdir"])
|
|
self.mount_a.run_shell(["mkdir", "parentdir/childdir"])
|
|
self.mount_a.run_shell(["touch", "rfile"])
|
|
self.mount_a.run_shell(["touch", "parentdir/pfile"])
|
|
self.mount_a.run_shell(["touch", "parentdir/childdir/cfile"])
|
|
|
|
# Build a structure mapping path to inode, as we will later want
|
|
# to check object by object and objects are named after ino number
|
|
inos = self._get_paths_to_ino()
|
|
|
|
# Flush metadata: this is a friendly test of forward scrub so we're skipping
|
|
# the part where it's meant to cope with dirty metadata
|
|
self.mount_a.umount_wait()
|
|
self.fs.mds_asok(["flush", "journal"])
|
|
|
|
tag = "mytag"
|
|
|
|
# Execute tagging forward scrub
|
|
self.fs.mds_asok(["tag", "path", "/parentdir", tag])
|
|
# Wait for completion
|
|
import time
|
|
time.sleep(10)
|
|
# FIXME watching clog isn't a nice mechanism for this, once we have a ScrubMap we'll
|
|
# watch that instead
|
|
|
|
# Check that dirs were tagged
|
|
for dirpath in ["./parentdir", "./parentdir/childdir"]:
|
|
self.assertTagged(inos[dirpath], tag, self.fs.get_metadata_pool_name())
|
|
|
|
# Check that files were tagged
|
|
for filepath in ["./parentdir/pfile", "./parentdir/childdir/cfile"]:
|
|
self.assertTagged(inos[filepath], tag, self.fs.get_data_pool_name())
|
|
|
|
# This guy wasn't in the tag path, shouldn't have been tagged
|
|
self.assertUntagged(inos["./rfile"])
|
|
|
|
def assertUntagged(self, ino):
|
|
file_obj_name = "{0:x}.00000000".format(ino)
|
|
with self.assertRaises(CommandFailedError):
|
|
self._read_str_xattr(
|
|
self.fs.get_data_pool_name(),
|
|
file_obj_name,
|
|
"scrub_tag"
|
|
)
|
|
|
|
def assertTagged(self, ino, tag, pool):
|
|
file_obj_name = "{0:x}.00000000".format(ino)
|
|
wrote = self._read_str_xattr(
|
|
pool,
|
|
file_obj_name,
|
|
"scrub_tag"
|
|
)
|
|
self.assertEqual(wrote, tag)
|
|
|
|
def _validate_linkage(self, expected):
|
|
inos = self._get_paths_to_ino()
|
|
try:
|
|
self.assertDictEqual(inos, expected)
|
|
except AssertionError:
|
|
log.error("Expected: {0}".format(json.dumps(expected, indent=2)))
|
|
log.error("Actual: {0}".format(json.dumps(inos, indent=2)))
|
|
raise
|
|
|
|
def test_orphan_scan(self):
|
|
# Create some files whose metadata we will flush
|
|
self.mount_a.run_python(dedent("""
|
|
import os
|
|
mount_point = "{mount_point}"
|
|
parent = os.path.join(mount_point, "parent")
|
|
os.mkdir(parent)
|
|
flushed = os.path.join(parent, "flushed")
|
|
os.mkdir(flushed)
|
|
for f in ["alpha", "bravo", "charlie"]:
|
|
open(os.path.join(flushed, f), 'w').write(f)
|
|
""".format(mount_point=self.mount_a.mountpoint)))
|
|
|
|
inos = self._get_paths_to_ino()
|
|
|
|
# Flush journal
|
|
# Umount before flush to avoid cap releases putting
|
|
# things we don't want in the journal later.
|
|
self.mount_a.umount_wait()
|
|
self.fs.mds_asok(["flush", "journal"])
|
|
|
|
# Create a new inode that's just in the log, i.e. would
|
|
# look orphaned to backward scan if backward scan wisnae
|
|
# respectin' tha scrub_tag xattr.
|
|
self.mount_a.mount_wait()
|
|
self.mount_a.run_shell(["mkdir", "parent/unflushed"])
|
|
self.mount_a.run_shell(["dd", "if=/dev/urandom",
|
|
"of=./parent/unflushed/jfile",
|
|
"bs=1M", "count=8"])
|
|
inos["./parent/unflushed"] = self.mount_a.path_to_ino("./parent/unflushed")
|
|
inos["./parent/unflushed/jfile"] = self.mount_a.path_to_ino("./parent/unflushed/jfile")
|
|
self.mount_a.umount_wait()
|
|
|
|
# Orphan an inode by deleting its dentry
|
|
# Our victim will be.... bravo.
|
|
self.mount_a.umount_wait()
|
|
self.fs.mds_stop()
|
|
self.fs.mds_fail()
|
|
self.fs.set_ceph_conf('mds', 'mds verify scatter', False)
|
|
self.fs.set_ceph_conf('mds', 'mds debug scatterstat', False)
|
|
frag_obj_id = "{0:x}.00000000".format(inos["./parent/flushed"])
|
|
self.fs.rados(["rmomapkey", frag_obj_id, "bravo_head"])
|
|
|
|
self.fs.mds_restart()
|
|
self.fs.wait_for_daemons()
|
|
|
|
# See that the orphaned file is indeed missing from a client's POV
|
|
self.mount_a.mount_wait()
|
|
damaged_state = self._get_paths_to_ino()
|
|
self.assertNotIn("./parent/flushed/bravo", damaged_state)
|
|
self.mount_a.umount_wait()
|
|
|
|
# Run a tagging forward scrub
|
|
tag = "mytag123"
|
|
self.fs.mds_asok(["tag", "path", "/parent", tag])
|
|
|
|
# See that the orphan wisnae tagged
|
|
self.assertUntagged(inos['./parent/flushed/bravo'])
|
|
|
|
# See that the flushed-metadata-and-still-present files are tagged
|
|
self.assertTagged(inos['./parent/flushed/alpha'], tag, self.fs.get_data_pool_name())
|
|
self.assertTagged(inos['./parent/flushed/charlie'], tag, self.fs.get_data_pool_name())
|
|
|
|
# See that journalled-but-not-flushed file *was* tagged
|
|
self.assertTagged(inos['./parent/unflushed/jfile'], tag, self.fs.get_data_pool_name())
|
|
|
|
# Run cephfs-data-scan targeting only orphans
|
|
self.fs.mds_stop()
|
|
self.fs.mds_fail()
|
|
self.fs.data_scan(["scan_extents", self.fs.get_data_pool_name()])
|
|
self.fs.data_scan([
|
|
"scan_inodes",
|
|
"--filter-tag", tag,
|
|
self.fs.get_data_pool_name()
|
|
])
|
|
|
|
# After in-place injection stats should be kosher again
|
|
self.fs.set_ceph_conf('mds', 'mds verify scatter', True)
|
|
self.fs.set_ceph_conf('mds', 'mds debug scatterstat', True)
|
|
|
|
# And we should have all the same linkage we started with,
|
|
# and no lost+found, and no extra inodes!
|
|
self.fs.mds_restart()
|
|
self.fs.wait_for_daemons()
|
|
self.mount_a.mount_wait()
|
|
self._validate_linkage(inos)
|
|
|
|
def _stash_inotable(self):
|
|
# Get all active ranks
|
|
ranks = self.fs.get_all_mds_rank()
|
|
|
|
inotable_dict = {}
|
|
for rank in ranks:
|
|
inotable_oid = "mds{rank:d}_".format(rank=rank) + "inotable"
|
|
print("Trying to fetch inotable object: " + inotable_oid)
|
|
|
|
#self.fs.get_metadata_object("InoTable", "mds0_inotable")
|
|
inotable_raw = self.fs.get_metadata_object_raw(inotable_oid)
|
|
inotable_dict[inotable_oid] = inotable_raw
|
|
return inotable_dict
|
|
|
|
def test_inotable_sync(self):
|
|
self.mount_a.write_n_mb("file1_sixmegs", 6)
|
|
|
|
# Flush journal
|
|
self.mount_a.umount_wait()
|
|
self.fs.mds_asok(["flush", "journal"])
|
|
|
|
inotable_copy = self._stash_inotable()
|
|
|
|
self.mount_a.mount_wait()
|
|
|
|
self.mount_a.write_n_mb("file2_sixmegs", 6)
|
|
self.mount_a.write_n_mb("file3_sixmegs", 6)
|
|
|
|
inos = self._get_paths_to_ino()
|
|
|
|
# Flush journal
|
|
self.mount_a.umount_wait()
|
|
self.fs.mds_asok(["flush", "journal"])
|
|
|
|
self.mount_a.umount_wait()
|
|
|
|
with self.assert_cluster_log("inode table repaired", invert_match=True):
|
|
out_json = self.fs.rank_tell(["scrub", "start", "/", "repair", "recursive"])
|
|
self.assertNotEqual(out_json, None)
|
|
|
|
self.mds_cluster.mds_stop()
|
|
self.mds_cluster.mds_fail()
|
|
|
|
# Truncate the journal (to ensure the inotable on disk
|
|
# is all that will be in the InoTable in memory)
|
|
|
|
self.fs.journal_tool(["event", "splice",
|
|
"--inode={0}".format(inos["./file2_sixmegs"]), "summary"], 0)
|
|
|
|
self.fs.journal_tool(["event", "splice",
|
|
"--inode={0}".format(inos["./file3_sixmegs"]), "summary"], 0)
|
|
|
|
# Revert to old inotable.
|
|
for key, value in inotable_copy.items():
|
|
self.fs.put_metadata_object_raw(key, value)
|
|
|
|
self.mds_cluster.mds_restart()
|
|
self.fs.wait_for_daemons()
|
|
|
|
with self.assert_cluster_log("inode table repaired"):
|
|
out_json = self.fs.rank_tell(["scrub", "start", "/", "repair", "recursive"])
|
|
self.assertNotEqual(out_json, None)
|
|
|
|
self.mds_cluster.mds_stop()
|
|
table_text = self.fs.table_tool(["0", "show", "inode"])
|
|
table = json.loads(table_text)
|
|
self.assertGreater(
|
|
table['0']['data']['inotable']['free'][0]['start'],
|
|
inos['./file3_sixmegs'])
|
|
|
|
def test_backtrace_repair(self):
|
|
"""
|
|
That the MDS can repair an inodes backtrace in the data pool
|
|
if it is found to be damaged.
|
|
"""
|
|
# Create a file for subsequent checks
|
|
self.mount_a.run_shell(["mkdir", "parent_a"])
|
|
self.mount_a.run_shell(["touch", "parent_a/alpha"])
|
|
file_ino = self.mount_a.path_to_ino("parent_a/alpha")
|
|
|
|
# That backtrace and layout are written after initial flush
|
|
self.fs.mds_asok(["flush", "journal"])
|
|
backtrace = self.fs.read_backtrace(file_ino)
|
|
self.assertEqual(['alpha', 'parent_a'],
|
|
[a['dname'] for a in backtrace['ancestors']])
|
|
|
|
# Go corrupt the backtrace
|
|
self.fs._write_data_xattr(file_ino, "parent",
|
|
"oh i'm sorry did i overwrite your xattr?")
|
|
|
|
with self.assert_cluster_log("bad backtrace on inode"):
|
|
out_json = self.fs.rank_tell(["scrub", "start", "/", "repair", "recursive"])
|
|
self.assertNotEqual(out_json, None)
|
|
self.fs.mds_asok(["flush", "journal"])
|
|
backtrace = self.fs.read_backtrace(file_ino)
|
|
self.assertEqual(['alpha', 'parent_a'],
|
|
[a['dname'] for a in backtrace['ancestors']])
|