import json import logging from threading import Lock from typing import List, Dict, Any, Set, Tuple, cast, Optional, TYPE_CHECKING from ceph.deployment import translate from ceph.deployment.drive_group import DriveGroupSpec from ceph.deployment.drive_selection import DriveSelection from ceph.deployment.inventory import Device from ceph.utils import datetime_to_str, str_to_datetime from datetime import datetime import orchestrator from cephadm.serve import CephadmServe from cephadm.utils import forall_hosts from ceph.utils import datetime_now from orchestrator import OrchestratorError, DaemonDescription from mgr_module import MonCommandFailed from cephadm.services.cephadmservice import CephadmDaemonDeploySpec, CephService if TYPE_CHECKING: from cephadm.module import CephadmOrchestrator logger = logging.getLogger(__name__) class OSDService(CephService): TYPE = 'osd' def create_from_spec(self, drive_group: DriveGroupSpec) -> str: logger.debug(f"Processing DriveGroup {drive_group}") osd_id_claims = OsdIdClaims(self.mgr) if osd_id_claims.get(): logger.info( f"Found osd claims for drivegroup {drive_group.service_id} -> {osd_id_claims.get()}") @forall_hosts def create_from_spec_one(host: str, drive_selection: DriveSelection) -> Optional[str]: # skip this host if there has been no change in inventory if not self.mgr.cache.osdspec_needs_apply(host, drive_group): self.mgr.log.debug("skipping apply of %s on %s (no change)" % ( host, drive_group)) return None # skip this host if we cannot schedule here if self.mgr.inventory.has_label(host, '_no_schedule'): return None osd_id_claims_for_host = osd_id_claims.filtered_by_host(host) cmds: List[str] = self.driveselection_to_ceph_volume(drive_selection, osd_id_claims_for_host) if not cmds: logger.debug("No data_devices, skipping DriveGroup: {}".format( drive_group.service_id)) return None logger.debug('Applying service osd.%s on host %s...' % ( drive_group.service_id, host )) start_ts = datetime_now() env_vars: List[str] = [f"CEPH_VOLUME_OSDSPEC_AFFINITY={drive_group.service_id}"] ret_msg = self.create_single_host( drive_group, host, cmds, replace_osd_ids=osd_id_claims_for_host, env_vars=env_vars ) self.mgr.cache.update_osdspec_last_applied( host, drive_group.service_name(), start_ts ) self.mgr.cache.save_host(host) return ret_msg ret = create_from_spec_one(self.prepare_drivegroup(drive_group)) return ", ".join(filter(None, ret)) def create_single_host(self, drive_group: DriveGroupSpec, host: str, cmds: List[str], replace_osd_ids: List[str], env_vars: Optional[List[str]] = None) -> str: for cmd in cmds: out, err, code = self._run_ceph_volume_command(host, cmd, env_vars=env_vars) if code == 1 and ', it is already prepared' in '\n'.join(err): # HACK: when we create against an existing LV, ceph-volume # returns an error and the above message. To make this # command idempotent, tolerate this "error" and continue. logger.debug('the device was already prepared; continuing') code = 0 if code: raise RuntimeError( 'cephadm exited with an error code: %d, stderr:%s' % ( code, '\n'.join(err))) return self.deploy_osd_daemons_for_existing_osds(host, drive_group.service_name(), replace_osd_ids) def deploy_osd_daemons_for_existing_osds(self, host: str, service_name: str, replace_osd_ids: Optional[List[str]] = None) -> str: if replace_osd_ids is None: replace_osd_ids = OsdIdClaims(self.mgr).filtered_by_host(host) assert replace_osd_ids is not None # check result: lvm osds_elems: dict = CephadmServe(self.mgr)._run_cephadm_json( host, 'osd', 'ceph-volume', [ '--', 'lvm', 'list', '--format', 'json', ]) before_osd_uuid_map = self.mgr.get_osd_uuid_map(only_up=True) fsid = self.mgr._cluster_fsid osd_uuid_map = self.mgr.get_osd_uuid_map() created = [] for osd_id, osds in osds_elems.items(): for osd in osds: if osd['type'] == 'db': continue if osd['tags']['ceph.cluster_fsid'] != fsid: logger.debug('mismatched fsid, skipping %s' % osd) continue if osd_id in before_osd_uuid_map and osd_id not in replace_osd_ids: # if it exists but is part of the replacement operation, don't skip continue if self.mgr.cache.has_daemon(f'osd.{osd_id}', host): # cephadm daemon instance already exists logger.debug(f'osd id {osd_id} daemon already exists') continue if osd_id not in osd_uuid_map: logger.debug('osd id {} does not exist in cluster'.format(osd_id)) continue if osd_uuid_map.get(osd_id) != osd['tags']['ceph.osd_fsid']: logger.debug('mismatched osd uuid (cluster has %s, osd ' 'has %s)' % ( osd_uuid_map.get(osd_id), osd['tags']['ceph.osd_fsid'])) continue created.append(osd_id) daemon_spec: CephadmDaemonDeploySpec = CephadmDaemonDeploySpec( service_name=service_name, daemon_id=str(osd_id), host=host, daemon_type='osd', ) daemon_spec.final_config, daemon_spec.deps = self.generate_config(daemon_spec) CephadmServe(self.mgr)._create_daemon( daemon_spec, osd_uuid_map=osd_uuid_map) # check result: raw raw_elems: dict = CephadmServe(self.mgr)._run_cephadm_json( host, 'osd', 'ceph-volume', [ '--', 'raw', 'list', '--format', 'json', ]) for osd_uuid, osd in raw_elems.items(): if osd.get('ceph_fsid') != fsid: continue osd_id = str(osd.get('osd_id', '-1')) if osd_id in before_osd_uuid_map and osd_id not in replace_osd_ids: # if it exists but is part of the replacement operation, don't skip continue if self.mgr.cache.has_daemon(f'osd.{osd_id}', host): # cephadm daemon instance already exists logger.debug(f'osd id {osd_id} daemon already exists') continue if osd_id not in osd_uuid_map: logger.debug('osd id {} does not exist in cluster'.format(osd_id)) continue if osd_uuid_map.get(osd_id) != osd_uuid: logger.debug('mismatched osd uuid (cluster has %s, osd ' 'has %s)' % (osd_uuid_map.get(osd_id), osd_uuid)) continue if osd_id in created: continue created.append(osd_id) daemon_spec = CephadmDaemonDeploySpec( service_name=service_name, daemon_id=osd_id, host=host, daemon_type='osd', ) daemon_spec.final_config, daemon_spec.deps = self.generate_config(daemon_spec) CephadmServe(self.mgr)._create_daemon( daemon_spec, osd_uuid_map=osd_uuid_map) if created: self.mgr.cache.invalidate_host_devices(host) self.mgr.cache.invalidate_autotune(host) return "Created osd(s) %s on host '%s'" % (','.join(created), host) else: return "Created no osd(s) on host %s; already created?" % host def prepare_drivegroup(self, drive_group: DriveGroupSpec) -> List[Tuple[str, DriveSelection]]: # 1) use fn_filter to determine matching_hosts matching_hosts = drive_group.placement.filter_matching_hostspecs( self.mgr._schedulable_hosts()) # 2) Map the inventory to the InventoryHost object host_ds_map = [] # set osd_id_claims def _find_inv_for_host(hostname: str, inventory_dict: dict) -> List[Device]: # This is stupid and needs to be loaded with the host for _host, _inventory in inventory_dict.items(): if _host == hostname: return _inventory raise OrchestratorError("No inventory found for host: {}".format(hostname)) # 3) iterate over matching_host and call DriveSelection logger.debug(f"Checking matching hosts -> {matching_hosts}") for host in matching_hosts: inventory_for_host = _find_inv_for_host(host, self.mgr.cache.devices) logger.debug(f"Found inventory for host {inventory_for_host}") # List of Daemons on that host dd_for_spec = self.mgr.cache.get_daemons_by_service(drive_group.service_name()) dd_for_spec_and_host = [dd for dd in dd_for_spec if dd.hostname == host] drive_selection = DriveSelection(drive_group, inventory_for_host, existing_daemons=len(dd_for_spec_and_host)) logger.debug(f"Found drive selection {drive_selection}") if drive_group.method and drive_group.method == 'raw': # ceph-volume can currently only handle a 1:1 mapping # of data/db/wal devices for raw mode osds. If db/wal devices # are defined and the number does not match the number of data # devices, we need to bail out if drive_selection.data_devices() and drive_selection.db_devices(): if len(drive_selection.data_devices()) != len(drive_selection.db_devices()): raise OrchestratorError('Raw mode only supports a 1:1 ratio of data to db devices. Found ' f'{len(drive_selection.data_devices())} potential data device(s) and ' f'{len(drive_selection.db_devices())} potential db device(s) on host {host}') if drive_selection.data_devices() and drive_selection.wal_devices(): if len(drive_selection.data_devices()) != len(drive_selection.wal_devices()): raise OrchestratorError('Raw mode only supports a 1:1 ratio of data to wal devices. Found ' f'{len(drive_selection.data_devices())} potential data device(s) and ' f'{len(drive_selection.wal_devices())} potential wal device(s) on host {host}') host_ds_map.append((host, drive_selection)) return host_ds_map @staticmethod def driveselection_to_ceph_volume(drive_selection: DriveSelection, osd_id_claims: Optional[List[str]] = None, preview: bool = False) -> List[str]: logger.debug(f"Translating DriveGroup <{drive_selection.spec}> to ceph-volume command") cmds: List[str] = translate.to_ceph_volume(drive_selection, osd_id_claims, preview=preview).run() logger.debug(f"Resulting ceph-volume cmds: {cmds}") return cmds def get_previews(self, host: str) -> List[Dict[str, Any]]: # Find OSDSpecs that match host. osdspecs = self.resolve_osdspecs_for_host(host) return self.generate_previews(osdspecs, host) def generate_previews(self, osdspecs: List[DriveGroupSpec], for_host: str) -> List[Dict[str, Any]]: """ The return should look like this: [ {'data': {}, 'osdspec': , 'host': , 'notes': }, {'data': ..., 'osdspec': .., 'host': ..., 'notes': ... } ] Note: One host can have multiple previews based on its assigned OSDSpecs. """ self.mgr.log.debug(f"Generating OSDSpec previews for {osdspecs}") ret_all: List[Dict[str, Any]] = [] if not osdspecs: return ret_all for osdspec in osdspecs: # populate osd_id_claims osd_id_claims = OsdIdClaims(self.mgr) # prepare driveselection for host, ds in self.prepare_drivegroup(osdspec): if host != for_host: continue # driveselection for host cmds: List[str] = self.driveselection_to_ceph_volume(ds, osd_id_claims.filtered_by_host(host), preview=True) if not cmds: logger.debug("No data_devices, skipping DriveGroup: {}".format( osdspec.service_name())) continue # get preview data from ceph-volume for cmd in cmds: out, err, code = self._run_ceph_volume_command(host, cmd) if out: try: concat_out: Dict[str, Any] = json.loads(' '.join(out)) except ValueError: logger.exception('Cannot decode JSON: \'%s\'' % ' '.join(out)) concat_out = {} notes = [] if osdspec.data_devices is not None and osdspec.data_devices.limit and len(concat_out) < osdspec.data_devices.limit: found = len(concat_out) limit = osdspec.data_devices.limit notes.append( f'NOTE: Did not find enough disks matching filter on host {host} to reach data device limit (Found: {found} | Limit: {limit})') ret_all.append({'data': concat_out, 'osdspec': osdspec.service_id, 'host': host, 'notes': notes}) return ret_all def resolve_hosts_for_osdspecs(self, specs: Optional[List[DriveGroupSpec]] = None ) -> List[str]: osdspecs = [] if specs: osdspecs = [cast(DriveGroupSpec, spec) for spec in specs] if not osdspecs: self.mgr.log.debug("No OSDSpecs found") return [] return sum([spec.placement.filter_matching_hostspecs(self.mgr._schedulable_hosts()) for spec in osdspecs], []) def resolve_osdspecs_for_host(self, host: str, specs: Optional[List[DriveGroupSpec]] = None) -> List[DriveGroupSpec]: matching_specs = [] self.mgr.log.debug(f"Finding OSDSpecs for host: <{host}>") if not specs: specs = [cast(DriveGroupSpec, spec) for (sn, spec) in self.mgr.spec_store.spec_preview.items() if spec.service_type == 'osd'] for spec in specs: if host in spec.placement.filter_matching_hostspecs(self.mgr._schedulable_hosts()): self.mgr.log.debug(f"Found OSDSpecs for host: <{host}> -> <{spec}>") matching_specs.append(spec) return matching_specs def _run_ceph_volume_command(self, host: str, cmd: str, env_vars: Optional[List[str]] = None ) -> Tuple[List[str], List[str], int]: self.mgr.inventory.assert_host(host) # get bootstrap key ret, keyring, err = self.mgr.check_mon_command({ 'prefix': 'auth get', 'entity': 'client.bootstrap-osd', }) j = json.dumps({ 'config': self.mgr.get_minimal_ceph_conf(), 'keyring': keyring, }) split_cmd = cmd.split(' ') _cmd = ['--config-json', '-', '--'] _cmd.extend(split_cmd) out, err, code = CephadmServe(self.mgr)._run_cephadm( host, 'osd', 'ceph-volume', _cmd, env_vars=env_vars, stdin=j, error_ok=True) return out, err, code def post_remove(self, daemon: DaemonDescription, is_failed_deploy: bool) -> None: # Do not remove the osd.N keyring, if we failed to deploy the OSD, because # we cannot recover from it. The OSD keys are created by ceph-volume and not by # us. if not is_failed_deploy: super().post_remove(daemon, is_failed_deploy=is_failed_deploy) class OsdIdClaims(object): """ Retrieve and provide osd ids that can be reused in the cluster """ def __init__(self, mgr: "CephadmOrchestrator") -> None: self.mgr: "CephadmOrchestrator" = mgr self.osd_host_map: Dict[str, List[str]] = dict() self.refresh() def refresh(self) -> None: try: ret, out, err = self.mgr.check_mon_command({ 'prefix': 'osd tree', 'states': ['destroyed'], 'format': 'json' }) except MonCommandFailed as e: logger.exception('osd tree failed') raise OrchestratorError(str(e)) try: tree = json.loads(out) except ValueError: logger.exception(f'Cannot decode JSON: \'{out}\'') return nodes = tree.get('nodes', {}) for node in nodes: if node.get('type') == 'host': self.osd_host_map.update( {node.get('name'): [str(_id) for _id in node.get('children', list())]} ) if self.osd_host_map: self.mgr.log.info(f"Found osd claims -> {self.osd_host_map}") def get(self) -> Dict[str, List[str]]: return self.osd_host_map def filtered_by_host(self, host: str) -> List[str]: """ Return the list of osd ids that can be reused in a host OSD id claims in CRUSH map are linked to the bare name of the hostname. In case of FQDN hostnames the host is searched by the bare name """ return self.osd_host_map.get(host.split(".")[0], []) class RemoveUtil(object): def __init__(self, mgr: "CephadmOrchestrator") -> None: self.mgr: "CephadmOrchestrator" = mgr def get_osds_in_cluster(self) -> List[str]: osd_map = self.mgr.get_osdmap() return [str(x.get('osd')) for x in osd_map.dump().get('osds', [])] def osd_df(self) -> dict: base_cmd = 'osd df' ret, out, err = self.mgr.mon_command({ 'prefix': base_cmd, 'format': 'json' }) try: return json.loads(out) except ValueError: logger.exception(f'Cannot decode JSON: \'{out}\'') return {} def get_pg_count(self, osd_id: int, osd_df: Optional[dict] = None) -> int: if not osd_df: osd_df = self.osd_df() osd_nodes = osd_df.get('nodes', []) for osd_node in osd_nodes: if osd_node.get('id') == int(osd_id): return osd_node.get('pgs', -1) return -1 def find_osd_stop_threshold(self, osds: List["OSD"]) -> Optional[List["OSD"]]: """ Cut osd_id list in half until it's ok-to-stop :param osds: list of osd_ids :return: list of ods_ids that can be stopped at once """ if not osds: return [] while not self.ok_to_stop(osds): if len(osds) <= 1: # can't even stop one OSD, aborting self.mgr.log.debug( "Can't even stop one OSD. Cluster is probably busy. Retrying later..") return [] # This potentially prolongs the global wait time. self.mgr.event.wait(1) # splitting osd_ids in half until ok_to_stop yields success # maybe popping ids off one by one is better here..depends on the cluster size I guess.. # There's a lot of room for micro adjustments here osds = osds[len(osds) // 2:] return osds # todo start draining # return all([osd.start_draining() for osd in osds]) def ok_to_stop(self, osds: List["OSD"]) -> bool: cmd_args = { 'prefix': "osd ok-to-stop", 'ids': [str(osd.osd_id) for osd in osds] } return self._run_mon_cmd(cmd_args, error_ok=True) def set_osd_flag(self, osds: List["OSD"], flag: str) -> bool: base_cmd = f"osd {flag}" self.mgr.log.debug(f"running cmd: {base_cmd} on ids {osds}") ret, out, err = self.mgr.mon_command({ 'prefix': base_cmd, 'ids': [str(osd.osd_id) for osd in osds] }) if ret != 0: self.mgr.log.error(f"Could not set {flag} flag for {osds}. <{err}>") return False self.mgr.log.info(f"{','.join([str(o) for o in osds])} now {flag}") return True def get_weight(self, osd: "OSD") -> Optional[float]: ret, out, err = self.mgr.mon_command({ 'prefix': 'osd crush tree', 'format': 'json', }) if ret != 0: self.mgr.log.error(f"Could not dump crush weights. <{err}>") return None j = json.loads(out) for n in j.get("nodes", []): if n.get("name") == f"osd.{osd.osd_id}": self.mgr.log.info(f"{osd} crush weight is {n.get('crush_weight')}") return n.get("crush_weight") return None def reweight_osd(self, osd: "OSD", weight: float) -> bool: self.mgr.log.debug(f"running cmd: osd crush reweight on {osd}") ret, out, err = self.mgr.mon_command({ 'prefix': "osd crush reweight", 'name': f"osd.{osd.osd_id}", 'weight': weight, }) if ret != 0: self.mgr.log.error(f"Could not reweight {osd} to {weight}. <{err}>") return False self.mgr.log.info(f"{osd} weight is now {weight}") return True def zap_osd(self, osd: "OSD") -> str: "Zaps all devices that are associated with an OSD" if osd.hostname is not None: out, err, code = CephadmServe(self.mgr)._run_cephadm( osd.hostname, 'osd', 'ceph-volume', ['--', 'lvm', 'zap', '--destroy', '--osd-id', str(osd.osd_id)], error_ok=True) self.mgr.cache.invalidate_host_devices(osd.hostname) if code: raise OrchestratorError('Zap failed: %s' % '\n'.join(out + err)) return '\n'.join(out + err) raise OrchestratorError(f"Failed to zap OSD {osd.osd_id} because host was unknown") def safe_to_destroy(self, osd_ids: List[int]) -> bool: """ Queries the safe-to-destroy flag for OSDs """ cmd_args = {'prefix': 'osd safe-to-destroy', 'ids': [str(x) for x in osd_ids]} return self._run_mon_cmd(cmd_args, error_ok=True) def destroy_osd(self, osd_id: int) -> bool: """ Destroys an OSD (forcefully) """ cmd_args = {'prefix': 'osd destroy-actual', 'id': int(osd_id), 'yes_i_really_mean_it': True} return self._run_mon_cmd(cmd_args) def purge_osd(self, osd_id: int) -> bool: """ Purges an OSD from the cluster (forcefully) """ cmd_args = { 'prefix': 'osd purge-actual', 'id': int(osd_id), 'yes_i_really_mean_it': True } return self._run_mon_cmd(cmd_args) def _run_mon_cmd(self, cmd_args: dict, error_ok: bool = False) -> bool: """ Generic command to run mon_command and evaluate/log the results """ ret, out, err = self.mgr.mon_command(cmd_args) if ret != 0: self.mgr.log.debug(f"ran {cmd_args} with mon_command") if not error_ok: self.mgr.log.error(f"cmd: {cmd_args.get('prefix')} failed with: {err}. (errno:{ret})") return False self.mgr.log.debug(f"cmd: {cmd_args.get('prefix')} returns: {out}") return True class NotFoundError(Exception): pass class OSD: def __init__(self, osd_id: int, remove_util: RemoveUtil, drain_started_at: Optional[datetime] = None, process_started_at: Optional[datetime] = None, drain_stopped_at: Optional[datetime] = None, drain_done_at: Optional[datetime] = None, draining: bool = False, started: bool = False, stopped: bool = False, replace: bool = False, force: bool = False, hostname: Optional[str] = None, zap: bool = False): # the ID of the OSD self.osd_id = osd_id # when did process (not the actual draining) start self.process_started_at = process_started_at # when did the drain start self.drain_started_at = drain_started_at # when did the drain stop self.drain_stopped_at = drain_stopped_at # when did the drain finish self.drain_done_at = drain_done_at # did the draining start self.draining = draining # was the operation started self.started = started # was the operation stopped self.stopped = stopped # If this is a replace or remove operation self.replace = replace # If we wait for the osd to be drained self.force = force # The name of the node self.hostname = hostname # mgr obj to make mgr/mon calls self.rm_util: RemoveUtil = remove_util self.original_weight: Optional[float] = None # Whether devices associated with the OSD should be zapped (DATA ERASED) self.zap = zap def start(self) -> None: if self.started: logger.debug(f"Already started draining {self}") return None self.started = True self.stopped = False def start_draining(self) -> bool: if self.stopped: logger.debug(f"Won't start draining {self}. OSD draining is stopped.") return False if self.replace: self.rm_util.set_osd_flag([self], 'out') else: self.original_weight = self.rm_util.get_weight(self) self.rm_util.reweight_osd(self, 0.0) self.drain_started_at = datetime.utcnow() self.draining = True logger.debug(f"Started draining {self}.") return True def stop_draining(self) -> bool: if self.replace: self.rm_util.set_osd_flag([self], 'in') else: if self.original_weight: self.rm_util.reweight_osd(self, self.original_weight) self.drain_stopped_at = datetime.utcnow() self.draining = False logger.debug(f"Stopped draining {self}.") return True def stop(self) -> None: if self.stopped: logger.debug(f"Already stopped draining {self}") return None self.started = False self.stopped = True self.stop_draining() @property def is_draining(self) -> bool: """ Consider an OSD draining when it is actively draining but not yet empty """ return self.draining and not self.is_empty @property def is_ok_to_stop(self) -> bool: return self.rm_util.ok_to_stop([self]) @property def is_empty(self) -> bool: if self.get_pg_count() == 0: if not self.drain_done_at: self.drain_done_at = datetime.utcnow() self.draining = False return True return False def safe_to_destroy(self) -> bool: return self.rm_util.safe_to_destroy([self.osd_id]) def down(self) -> bool: return self.rm_util.set_osd_flag([self], 'down') def destroy(self) -> bool: return self.rm_util.destroy_osd(self.osd_id) def do_zap(self) -> str: return self.rm_util.zap_osd(self) def purge(self) -> bool: return self.rm_util.purge_osd(self.osd_id) def get_pg_count(self) -> int: return self.rm_util.get_pg_count(self.osd_id) @property def exists(self) -> bool: return str(self.osd_id) in self.rm_util.get_osds_in_cluster() def drain_status_human(self) -> str: default_status = 'not started' status = 'started' if self.started and not self.draining else default_status status = 'draining' if self.draining else status status = 'done, waiting for purge' if self.drain_done_at and not self.draining else status return status def pg_count_str(self) -> str: return 'n/a' if self.get_pg_count() < 0 else str(self.get_pg_count()) def to_json(self) -> dict: out: Dict[str, Any] = dict() out['osd_id'] = self.osd_id out['started'] = self.started out['draining'] = self.draining out['stopped'] = self.stopped out['replace'] = self.replace out['force'] = self.force out['zap'] = self.zap out['hostname'] = self.hostname # type: ignore for k in ['drain_started_at', 'drain_stopped_at', 'drain_done_at', 'process_started_at']: if getattr(self, k): out[k] = datetime_to_str(getattr(self, k)) else: out[k] = getattr(self, k) return out @classmethod def from_json(cls, inp: Optional[Dict[str, Any]], rm_util: RemoveUtil) -> Optional["OSD"]: if not inp: return None for date_field in ['drain_started_at', 'drain_stopped_at', 'drain_done_at', 'process_started_at']: if inp.get(date_field): inp.update({date_field: str_to_datetime(inp.get(date_field, ''))}) inp.update({'remove_util': rm_util}) if 'nodename' in inp: hostname = inp.pop('nodename') inp['hostname'] = hostname return cls(**inp) def __hash__(self) -> int: return hash(self.osd_id) def __eq__(self, other: object) -> bool: if not isinstance(other, OSD): return NotImplemented return self.osd_id == other.osd_id def __repr__(self) -> str: return f"osd.{self.osd_id}{' (draining)' if self.draining else ''}" class OSDRemovalQueue(object): def __init__(self, mgr: "CephadmOrchestrator") -> None: self.mgr: "CephadmOrchestrator" = mgr self.osds: Set[OSD] = set() self.rm_util = RemoveUtil(mgr) # locks multithreaded access to self.osds. Please avoid locking # network calls, like mon commands. self.lock = Lock() def process_removal_queue(self) -> None: """ Performs actions in the _serve() loop to remove an OSD when criteria is met. we can't hold self.lock, as we're calling _remove_daemon in the loop """ # make sure that we don't run on OSDs that are not in the cluster anymore. self.cleanup() # find osds that are ok-to-stop and not yet draining ready_to_drain_osds = self._ready_to_drain_osds() if ready_to_drain_osds: # start draining those _ = [osd.start_draining() for osd in ready_to_drain_osds] all_osds = self.all_osds() logger.debug( f"{self.queue_size()} OSDs are scheduled " f"for removal: {all_osds}") # Check all osds for their state and take action (remove, purge etc) new_queue: Set[OSD] = set() for osd in all_osds: # type: OSD if not osd.force: # skip criteria if not osd.is_empty: logger.debug(f"{osd} is not empty yet. Waiting a bit more") new_queue.add(osd) continue if not osd.safe_to_destroy(): logger.debug( f"{osd} is not safe-to-destroy yet. Waiting a bit more") new_queue.add(osd) continue # abort criteria if not osd.down(): # also remove it from the remove_osd list and set a health_check warning? raise orchestrator.OrchestratorError( f"Could not mark {osd} down") # stop and remove daemon assert osd.hostname is not None if self.mgr.cache.has_daemon(f'osd.{osd.osd_id}'): CephadmServe(self.mgr)._remove_daemon(f'osd.{osd.osd_id}', osd.hostname) logger.info(f"Successfully removed {osd} on {osd.hostname}") else: logger.info(f"Daemon {osd} on {osd.hostname} was already removed") if osd.replace: # mark destroyed in osdmap if not osd.destroy(): raise orchestrator.OrchestratorError( f"Could not destroy {osd}") logger.info( f"Successfully destroyed old {osd} on {osd.hostname}; ready for replacement") else: # purge from osdmap if not osd.purge(): raise orchestrator.OrchestratorError(f"Could not purge {osd}") logger.info(f"Successfully purged {osd} on {osd.hostname}") if osd.zap: # throws an exception if the zap fails logger.info(f"Zapping devices for {osd} on {osd.hostname}") osd.do_zap() logger.info(f"Successfully zapped devices for {osd} on {osd.hostname}") logger.debug(f"Removing {osd} from the queue.") # self could change while this is processing (osds get added from the CLI) # The new set is: 'an intersection of all osds that are still not empty/removed (new_queue) and # osds that were added while this method was executed' with self.lock: self.osds.intersection_update(new_queue) self._save_to_store() def cleanup(self) -> None: # OSDs can always be cleaned up manually. This ensures that we run on existing OSDs with self.lock: for osd in self._not_in_cluster(): self.osds.remove(osd) def _ready_to_drain_osds(self) -> List["OSD"]: """ Returns OSDs that are ok to stop and not yet draining. Only returns as many OSDs as can be accomodated by the 'max_osd_draining_count' config value, considering the number of OSDs that are already draining. """ draining_limit = max(1, self.mgr.max_osd_draining_count) num_already_draining = len(self.draining_osds()) num_to_start_draining = max(0, draining_limit - num_already_draining) stoppable_osds = self.rm_util.find_osd_stop_threshold(self.idling_osds()) return [] if stoppable_osds is None else stoppable_osds[:num_to_start_draining] def _save_to_store(self) -> None: osd_queue = [osd.to_json() for osd in self.osds] logger.debug(f"Saving {osd_queue} to store") self.mgr.set_store('osd_remove_queue', json.dumps(osd_queue)) def load_from_store(self) -> None: with self.lock: for k, v in self.mgr.get_store_prefix('osd_remove_queue').items(): for osd in json.loads(v): logger.debug(f"Loading osd ->{osd} from store") osd_obj = OSD.from_json(osd, rm_util=self.rm_util) if osd_obj is not None: self.osds.add(osd_obj) def as_osd_ids(self) -> List[int]: with self.lock: return [osd.osd_id for osd in self.osds] def queue_size(self) -> int: with self.lock: return len(self.osds) def draining_osds(self) -> List["OSD"]: with self.lock: return [osd for osd in self.osds if osd.is_draining] def idling_osds(self) -> List["OSD"]: with self.lock: return [osd for osd in self.osds if not osd.is_draining and not osd.is_empty] def empty_osds(self) -> List["OSD"]: with self.lock: return [osd for osd in self.osds if osd.is_empty] def all_osds(self) -> List["OSD"]: with self.lock: return [osd for osd in self.osds] def _not_in_cluster(self) -> List["OSD"]: return [osd for osd in self.osds if not osd.exists] def enqueue(self, osd: "OSD") -> None: if not osd.exists: raise NotFoundError() with self.lock: self.osds.add(osd) osd.start() def rm(self, osd: "OSD") -> None: if not osd.exists: raise NotFoundError() osd.stop() with self.lock: try: logger.debug(f'Removing {osd} from the queue.') self.osds.remove(osd) except KeyError: logger.debug(f"Could not find {osd} in queue.") raise KeyError def __eq__(self, other: Any) -> bool: if not isinstance(other, OSDRemovalQueue): return False with self.lock: return self.osds == other.osds