X-Git-Url: https://code.grnet.gr/git/ganeti-local/blobdiff_plain/1671492135c9b531dd80597e7e75d3988964dcf3..572e52bf4b0da1776e7f9019d39cfc2fbdf34d22:/lib/jqueue.py diff --git a/lib/jqueue.py b/lib/jqueue.py index cc98896..3364a93 100644 --- a/lib/jqueue.py +++ b/lib/jqueue.py @@ -47,7 +47,15 @@ from ganeti import utils from ganeti import jstore from ganeti import rpc + JOBQUEUE_THREADS = 25 +JOBS_PER_ARCHIVE_DIRECTORY = 10000 + + +class CancelJob(Exception): + """Special exception to cancel a job. + + """ def TimeStampNow(): @@ -232,6 +240,7 @@ class _QueuedJob(object): status will be the same - otherwise, the last opcode with the status one of: - waitlock + - canceling - running will determine the job status @@ -257,6 +266,9 @@ class _QueuedJob(object): status = constants.JOB_STATUS_WAITLOCK elif op.status == constants.OP_STATUS_RUNNING: status = constants.JOB_STATUS_RUNNING + elif op.status == constants.OP_STATUS_CANCELING: + status = constants.JOB_STATUS_CANCELING + break elif op.status == constants.OP_STATUS_ERROR: status = constants.JOB_STATUS_ERROR # The whole job fails if one opcode failed @@ -311,6 +323,13 @@ class _JobQueueWorker(workerpool.BaseWorker): self.queue.acquire() try: + assert self.opcode.status in (constants.OP_STATUS_WAITLOCK, + constants.OP_STATUS_CANCELING) + + # Cancel here if we were asked to + if self.opcode.status == constants.OP_STATUS_CANCELING: + raise CancelJob() + self.opcode.status = constants.OP_STATUS_RUNNING finally: self.queue.release() @@ -325,7 +344,7 @@ class _JobQueueWorker(workerpool.BaseWorker): @param job: the job to be processed """ - logging.debug("Worker %s processing job %s", + logging.info("Worker %s processing job %s", self.worker_id, job.id) proc = mcpu.Processor(self.pool.queue.context) self.queue = queue = job.queue @@ -333,11 +352,16 @@ class _JobQueueWorker(workerpool.BaseWorker): try: count = len(job.ops) for idx, op in enumerate(job.ops): + op_summary = op.input.Summary() try: - logging.debug("Op %s/%s: Starting %s", idx + 1, count, op) + logging.info("Op %s/%s: Starting opcode %s", idx + 1, count, + op_summary) queue.acquire() try: + if op.status == constants.OP_STATUS_CANCELED: + raise CancelJob() + assert op.status == constants.OP_STATUS_QUEUED job.run_op_index = idx op.status = constants.OP_STATUS_WAITLOCK op.result = None @@ -388,8 +412,11 @@ class _JobQueueWorker(workerpool.BaseWorker): finally: queue.release() - logging.debug("Op %s/%s: Successfully finished %s", - idx + 1, count, op) + logging.info("Op %s/%s: Successfully finished opcode %s", + idx + 1, count, op_summary) + except CancelJob: + # Will be handled further up + raise except Exception, err: queue.acquire() try: @@ -397,13 +424,20 @@ class _JobQueueWorker(workerpool.BaseWorker): op.status = constants.OP_STATUS_ERROR op.result = str(err) op.end_timestamp = TimeStampNow() - logging.debug("Op %s/%s: Error in %s", idx + 1, count, op) + logging.info("Op %s/%s: Error in opcode %s: %s", + idx + 1, count, op_summary, err) finally: queue.UpdateJobUnlocked(job) finally: queue.release() raise + except CancelJob: + queue.acquire() + try: + queue.CancelJobUnlocked(job) + finally: + queue.release() except errors.GenericError, err: logging.exception("Ganeti exception") except: @@ -420,8 +454,8 @@ class _JobQueueWorker(workerpool.BaseWorker): status = job.CalcStatus() finally: queue.release() - logging.debug("Worker %s finished job %s, status = %s", - self.worker_id, job_id, status) + logging.info("Worker %s finished job %s, status = %s", + self.worker_id, job_id, status) class _JobQueueWorkerPool(workerpool.WorkerPool): @@ -494,12 +528,13 @@ class JobQueue(object): # Get initial list of nodes self._nodes = dict((n.name, n.primary_ip) - for n in self.context.cfg.GetAllNodesInfo().values()) + for n in self.context.cfg.GetAllNodesInfo().values() + if n.master_candidate) # Remove master node try: del self._nodes[self._my_hostname] - except ValueError: + except KeyError: pass # TODO: Check consistency across nodes @@ -511,7 +546,21 @@ class JobQueue(object): # we're still doing our work. self.acquire() try: - for job in self._GetJobsUnlocked(None): + logging.info("Inspecting job queue") + + all_job_ids = self._GetJobIDsUnlocked() + jobs_count = len(all_job_ids) + lastinfo = time.time() + for idx, job_id in enumerate(all_job_ids): + # Give an update every 1000 jobs or 10 seconds + if (idx % 1000 == 0 or time.time() >= (lastinfo + 10.0) or + idx == (jobs_count - 1)): + logging.info("Job queue inspection: %d/%d (%0.1f %%)", + idx, jobs_count - 1, 100.0 * (idx + 1) / jobs_count) + lastinfo = time.time() + + job = self._LoadJobUnlocked(job_id) + # a failure in loading the job can cause 'None' to be returned if job is None: continue @@ -522,7 +571,8 @@ class JobQueue(object): self._wpool.AddTask(job) elif status in (constants.JOB_STATUS_RUNNING, - constants.JOB_STATUS_WAITLOCK): + constants.JOB_STATUS_WAITLOCK, + constants.JOB_STATUS_CANCELING): logging.warning("Unfinished job %s found: %s", job.id, job) try: for op in job.ops: @@ -530,6 +580,8 @@ class JobQueue(object): op.result = "Unclean master daemon shutdown" finally: self.UpdateJobUnlocked(job) + + logging.info("Job queue inspection finished") finally: self.release() except: @@ -551,6 +603,12 @@ class JobQueue(object): # Clean queue directory on added node rpc.RpcRunner.call_jobqueue_purge(node_name) + if not node.master_candidate: + # remove if existing, ignoring errors + self._nodes.pop(node_name, None) + # and skip the replication of the job ids + return + # Upload the whole queue excluding archived jobs files = [self._GetJobPath(job_id) for job_id in self._GetJobIDsUnlocked()] @@ -650,24 +708,24 @@ class JobQueue(object): self._CheckRpcResult(result, self._nodes, "Updating %s" % file_name) - def _RenameFileUnlocked(self, old, new): + def _RenameFilesUnlocked(self, rename): """Renames a file locally and then replicate the change. This function will rename a file in the local queue directory and then replicate this rename to all the other nodes we have. - @type old: str - @param old: the current name of the file - @type new: str - @param new: the new name of the file + @type rename: list of (old, new) + @param rename: List containing tuples mapping old to new names """ - os.rename(old, new) + # Rename them locally + for old, new in rename: + utils.RenameFile(old, new, mkdir=True) + # ... and on all nodes names, addrs = self._GetNodeIp() - result = rpc.RpcRunner.call_jobqueue_rename(names, addrs, old, new) - self._CheckRpcResult(result, self._nodes, - "Moving %s to %s" % (old, new)) + result = rpc.RpcRunner.call_jobqueue_rename(names, addrs, rename) + self._CheckRpcResult(result, self._nodes, "Renaming files (%r)" % rename) def _FormatJobID(self, job_id): """Convert a job ID to string format. @@ -689,6 +747,18 @@ class JobQueue(object): return str(job_id) + @classmethod + def _GetArchiveDirectory(cls, job_id): + """Returns the archive directory for a job. + + @type job_id: str + @param job_id: Job identifier + @rtype: str + @return: Directory name + + """ + return str(int(job_id) / JOBS_PER_ARCHIVE_DIRECTORY) + def _NewSerialUnlocked(self): """Generates a new job identifier. @@ -722,8 +792,8 @@ class JobQueue(object): """ return os.path.join(constants.QUEUE_DIR, "job-%s" % job_id) - @staticmethod - def _GetArchivedJobPath(job_id): + @classmethod + def _GetArchivedJobPath(cls, job_id): """Returns the archived job file for a give job id. @type job_id: str @@ -732,7 +802,8 @@ class JobQueue(object): @return: the path to the archived job file """ - return os.path.join(constants.JOB_QUEUE_ARCHIVE_DIR, "job-%s" % job_id) + path = "%s/job-%s" % (cls._GetArchiveDirectory(job_id), job_id) + return os.path.join(constants.JOB_QUEUE_ARCHIVE_DIR, path) @classmethod def _ExtractJobID(cls, name): @@ -820,7 +891,7 @@ class JobQueue(object): else: # non-archived case logging.exception("Can't parse job %s, will archive.", job_id) - self._RenameFileUnlocked(filepath, new_path) + self._RenameFilesUnlocked([(filepath, new_path)]) return None self._memcache[job_id] = job @@ -889,6 +960,18 @@ class JobQueue(object): """ if self._IsQueueMarkedDrain(): raise errors.JobQueueDrainError() + + # Check job queue size + size = len(self._ListJobFiles()) + if size >= constants.JOB_QUEUE_SIZE_SOFT_LIMIT: + # TODO: Autoarchive jobs. Make sure it's not done on every job + # submission, though. + #size = ... + pass + + if size >= constants.JOB_QUEUE_SIZE_HARD_LIMIT: + raise errors.JobQueueFull() + # Get job identifier job_id = self._NewSerialUnlocked() job = _QueuedJob(self, job_id, ops) @@ -1005,68 +1088,103 @@ class JobQueue(object): @param job_id: job ID of job to be cancelled. """ - logging.debug("Cancelling job %s", job_id) + logging.info("Cancelling job %s", job_id) job = self._LoadJobUnlocked(job_id) if not job: logging.debug("Job %s not found", job_id) - return + return (False, "Job %s not found" % job_id) - if job.CalcStatus() not in (constants.JOB_STATUS_QUEUED,): + job_status = job.CalcStatus() + + if job_status not in (constants.JOB_STATUS_QUEUED, + constants.JOB_STATUS_WAITLOCK): logging.debug("Job %s is no longer in the queue", job.id) - return + return (False, "Job %s is no longer in the queue" % job.id) + + if job_status == constants.JOB_STATUS_QUEUED: + self.CancelJobUnlocked(job) + return (True, "Job %s canceled" % job.id) + + elif job_status == constants.JOB_STATUS_WAITLOCK: + # The worker will notice the new status and cancel the job + try: + for op in job.ops: + op.status = constants.OP_STATUS_CANCELING + finally: + self.UpdateJobUnlocked(job) + return (True, "Job %s will be canceled" % job.id) + + @_RequireOpenQueue + def CancelJobUnlocked(self, job): + """Marks a job as canceled. + """ try: for op in job.ops: - op.status = constants.OP_STATUS_ERROR - op.result = "Job cancelled by request" + op.status = constants.OP_STATUS_CANCELED + op.result = "Job canceled by request" finally: self.UpdateJobUnlocked(job) @_RequireOpenQueue - def _ArchiveJobUnlocked(self, job_id): - """Archives a job. + def _ArchiveJobsUnlocked(self, jobs): + """Archives jobs. - @type job_id: string - @param job_id: Job ID of job to be archived. + @type jobs: list of L{_QueuedJob} + @param jobs: Job objects + @rtype: int + @return: Number of archived jobs """ - logging.info("Archiving job %s", job_id) + archive_jobs = [] + rename_files = [] + for job in jobs: + if job.CalcStatus() not in (constants.JOB_STATUS_CANCELED, + constants.JOB_STATUS_SUCCESS, + constants.JOB_STATUS_ERROR): + logging.debug("Job %s is not yet done", job.id) + continue - job = self._LoadJobUnlocked(job_id) - if not job: - logging.debug("Job %s not found", job_id) - return + archive_jobs.append(job) - if job.CalcStatus() not in (constants.JOB_STATUS_CANCELED, - constants.JOB_STATUS_SUCCESS, - constants.JOB_STATUS_ERROR): - logging.debug("Job %s is not yet done", job.id) - return + old = self._GetJobPath(job.id) + new = self._GetArchivedJobPath(job.id) + rename_files.append((old, new)) - old = self._GetJobPath(job.id) - new = self._GetArchivedJobPath(job.id) + # TODO: What if 1..n files fail to rename? + self._RenameFilesUnlocked(rename_files) - self._RenameFileUnlocked(old, new) + logging.debug("Successfully archived job(s) %s", + ", ".join(job.id for job in archive_jobs)) - logging.debug("Successfully archived job %s", job.id) + return len(archive_jobs) @utils.LockedMethod @_RequireOpenQueue def ArchiveJob(self, job_id): """Archives a job. - This is just a wrapper over L{_ArchiveJobUnlocked}. + This is just a wrapper over L{_ArchiveJobsUnlocked}. @type job_id: string @param job_id: Job ID of job to be archived. + @rtype: bool + @return: Whether job was archived """ - return self._ArchiveJobUnlocked(job_id) + logging.info("Archiving job %s", job_id) + + job = self._LoadJobUnlocked(job_id) + if not job: + logging.debug("Job %s not found", job_id) + return False + + return self._ArchiveJobsUnlocked([job]) == 1 @utils.LockedMethod @_RequireOpenQueue - def AutoArchiveJobs(self, age): + def AutoArchiveJobs(self, age, timeout): """Archives all jobs based on age. The method will archive all jobs which are older than the age @@ -1081,22 +1199,44 @@ class JobQueue(object): logging.info("Archiving jobs with age more than %s seconds", age) now = time.time() - for jid in self._GetJobIDsUnlocked(archived=False): - job = self._LoadJobUnlocked(jid) - if job.CalcStatus() not in (constants.OP_STATUS_SUCCESS, - constants.OP_STATUS_ERROR, - constants.OP_STATUS_CANCELED): - continue - if job.end_timestamp is None: - if job.start_timestamp is None: - job_age = job.received_timestamp + end_time = now + timeout + archived_count = 0 + last_touched = 0 + + all_job_ids = self._GetJobIDsUnlocked(archived=False) + pending = [] + for idx, job_id in enumerate(all_job_ids): + last_touched = idx + + # Not optimal because jobs could be pending + # TODO: Measure average duration for job archival and take number of + # pending jobs into account. + if time.time() > end_time: + break + + # Returns None if the job failed to load + job = self._LoadJobUnlocked(job_id) + if job: + if job.end_timestamp is None: + if job.start_timestamp is None: + job_age = job.received_timestamp + else: + job_age = job.start_timestamp else: - job_age = job.start_timestamp - else: - job_age = job.end_timestamp + job_age = job.end_timestamp + + if age == -1 or now - job_age[0] > age: + pending.append(job) + + # Archive 10 jobs at a time + if len(pending) >= 10: + archived_count += self._ArchiveJobsUnlocked(pending) + pending = [] + + if pending: + archived_count += self._ArchiveJobsUnlocked(pending) - if age == -1 or now - job_age[0] > age: - self._ArchiveJobUnlocked(jid) + return (archived_count, len(all_job_ids) - last_touched - 1) def _GetJobInfoUnlocked(self, job, fields): """Returns information about a job.