Re: BUG #16665: Segmentation fault

út 13. 10. 2020 v 5:31 odesílatel Raphael Megzari <raphael(at)megzari(dot)com>
napsal:

> Thanks for the issue, that is spot on.
> So it looks like I won't be able to get a debug image for docker.
>
> I have one question though. The core dump came from postgres 13.0 built
> for alpine. Would I be able to debug it, if I got postgres 13.0 on my macOS
> with the debug symbols and tried to debug on my local machine? Those
> binaries are different but come from the same version of postgres, would
> that work?
>
>
You cannot use binaries for docker for macOS. But if your application fails
inside the image, then probably it fails on macOS too.

Regards

Pavel

>
>
> On Sunday, Oct 11, 2020 at 4:13 PM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
> wrote:
>
>
> ne 11. 10. 2020 v 8:54 odesílatel Raphael Megzari <raphael(at)megzari(dot)com>
> napsal:
>
>> I'm not sure how to install debug symbols for Postgres, if you point me
>> to the right resource, I can read it.
>>
>
> it is a separate package - it has no relation to Postgres configuration.
>
> maybe this thread is related
> https://github.com/docker-library/postgres/issues/666
>
> Pavel
>
>
>> Here is my full configuration file. I haven't changed so many values
>>
>>
>> #------------------------------------------------------------------------------
>> # FILE LOCATIONS
>>
>> #------------------------------------------------------------------------------
>>
>> # The default values of these variables are driven from the -D
>> command-line
>> # option or PGDATA environment variable, represented here as ConfigDir.
>>
>> #data_directory = 'ConfigDir' # use data in another directory
>> # (change requires restart)
>> #hba_file = 'ConfigDir/pg_hba.conf' # host-based authentication file
>> # (change requires restart)
>> #ident_file = 'ConfigDir/pg_ident.conf' # ident configuration file
>> # (change requires restart)
>>
>> # If external_pid_file is not explicitly set, no extra PID file is
>> written.
>> #external_pid_file = '' # write an extra PID file
>> # (change requires restart)
>>
>>
>>
>> #------------------------------------------------------------------------------
>> # CONNECTIONS AND AUTHENTICATION
>>
>> #------------------------------------------------------------------------------
>>
>> # - Connection Settings -
>>
>> listen_addresses = '*'
>> # comma-separated list of
>> addresses;
>> # defaults to 'localhost'; use
>> '*' for all
>> # (change requires restart)
>> #port = 5432 # (change requires restart)
>> max_connections = 300 # (change requires restart)
>> #superuser_reserved_connections = 3 # (change requires restart)
>> #unix_socket_directories = '/var/run/postgresql' # comma-separated
>> list of directories
>> # (change requires restart)
>> #unix_socket_group = '' # (change requires restart)
>> #unix_socket_permissions = 0777 # begin with 0 to use octal
>> notation
>> # (change requires restart)
>> #bonjour = off # advertise server via Bonjour
>> # (change requires restart)
>> #bonjour_name = '' # defaults to the computer name
>> # (change requires restart)
>>
>> # - TCP settings -
>> # see "man tcp" for details
>>
>> #tcp_keepalives_idle = 0 # TCP_KEEPIDLE, in seconds;
>> # 0 selects the system default
>> #tcp_keepalives_interval = 0 # TCP_KEEPINTVL, in seconds;
>> # 0 selects the system default
>> #tcp_keepalives_count = 0 # TCP_KEEPCNT;
>> # 0 selects the system default
>> #tcp_user_timeout = 0 # TCP_USER_TIMEOUT, in
>> milliseconds;
>> # 0 selects the system default
>>
>> # - Authentication -
>>
>> #authentication_timeout = 1min # 1s-600s
>> #password_encryption = md5 # md5 or scram-sha-256
>> #db_user_namespace = off
>>
>> # GSSAPI using Kerberos
>> #krb_server_keyfile = ''
>> #krb_caseins_users = off
>>
>> # - SSL -
>>
>> #ssl = off
>> #ssl_ca_file = ''
>> #ssl_cert_file = 'server.crt'
>> #ssl_crl_file = ''
>> #ssl_key_file = 'server.key'
>> #ssl_ciphers = 'HIGH:MEDIUM:+3DES:!aNULL' # allowed SSL ciphers
>> #ssl_prefer_server_ciphers = on
>> #ssl_ecdh_curve = 'prime256v1'
>> #ssl_min_protocol_version = 'TLSv1.2'
>> #ssl_max_protocol_version = ''
>> #ssl_dh_params_file = ''
>> #ssl_passphrase_command = ''
>> #ssl_passphrase_command_supports_reload = off
>>
>>
>>
>> #------------------------------------------------------------------------------
>> # RESOURCE USAGE (except WAL)
>>
>> #------------------------------------------------------------------------------
>>
>> # - Memory -
>>
>> shared_buffers = 8GB # min 128kB
>> # (change requires restart)
>> #huge_pages = try # on, off, or try
>> # (change requires restart)
>> #temp_buffers = 8MB # min 800kB
>> #max_prepared_transactions = 0 # zero disables the feature
>> # (change requires restart)
>> # Caution: it is not advisable to set max_prepared_transactions nonzero
>> unless
>> # you actively intend to use prepared transactions.
>> work_mem = 64MB # min 64kB
>> #hash_mem_multiplier = 1.0 # 1-1000.0 multiplier on hash
>> table work_mem
>> maintenance_work_mem = 2GB # min 1MB
>> #autovacuum_work_mem = -1 # min 1MB, or -1 to use
>> maintenance_work_mem
>> #logical_decoding_work_mem = 64MB # min 64kB
>> #max_stack_depth = 2MB # min 100kB
>> #shared_memory_type = mmap # the default is the first option
>> # supported by the operating
>> system:
>> # mmap
>> # sysv
>> # windows
>> # (change requires restart)
>> dynamic_shared_memory_type = posix # the default is the first option
>> # supported by the operating
>> system:
>> # posix
>> # sysv
>> # windows
>> # mmap
>> # (change requires restart)
>>
>> # - Disk -
>>
>> #temp_file_limit = -1 # limits per-process temp file
>> space
>> # in kilobytes, or -1 for no limit
>>
>> # - Kernel Resources -
>>
>> #max_files_per_process = 1000 # min 64
>> # (change requires restart)
>>
>> # - Cost-Based Vacuum Delay -
>>
>> #vacuum_cost_delay = 0 # 0-100 milliseconds (0 disables)
>> #vacuum_cost_page_hit = 1 # 0-10000 credits
>> #vacuum_cost_page_miss = 10 # 0-10000 credits
>> #vacuum_cost_page_dirty = 20 # 0-10000 credits
>> #vacuum_cost_limit = 200 # 1-10000 credits
>>
>> # - Background Writer -
>>
>> #bgwriter_delay = 200ms # 10-10000ms between rounds
>> #bgwriter_lru_maxpages = 100 # max buffers written/round, 0
>> disables
>> #bgwriter_lru_multiplier = 2.0 # 0-10.0 multiplier on buffers
>> scanned/round
>> #bgwriter_flush_after = 512kB # measured in pages, 0 disables
>>
>> # - Asynchronous Behavior -
>>
>> effective_io_concurrency = 200 # 1-1000; 0 disables prefetching
>> #maintenance_io_concurrency = 10 # 1-1000; 0 disables prefetching
>> max_worker_processes = 16 # (change requires restart)
>> max_parallel_maintenance_workers = 4 # taken from max_parallel_workers
>> max_parallel_workers_per_gather = 4 # taken from max_parallel_workers
>> #parallel_leader_participation = on
>> max_parallel_workers = 16 # maximum number of
>> max_worker_processes that
>> # can be used in parallel
>> operations
>> #old_snapshot_threshold = -1 # 1min-60d; -1 disables; 0 is
>> immediate
>> # (change requires restart)
>> #backend_flush_after = 0 # measured in pages, 0 disables
>>
>>
>>
>> #------------------------------------------------------------------------------
>> # WRITE-AHEAD LOG
>>
>> #------------------------------------------------------------------------------
>>
>> # - Settings -
>>
>> #wal_level = replica # minimal, replica, or logical
>> # (change requires restart)
>> #fsync = on # flush data to disk for crash
>> safety
>> # (turning this off can cause
>> # unrecoverable data corruption)
>> #synchronous_commit = on # synchronization level;
>> # off, local, remote_write,
>> remote_apply, or on
>> #wal_sync_method = fsync # the default is the first option
>> # supported by the operating
>> system:
>> # open_datasync
>> # fdatasync (default on Linux)
>> # fsync
>> # fsync_writethrough
>> # open_sync
>> #full_page_writes = on # recover from partial page writes
>> #wal_compression = off # enable compression of full-page
>> writes
>> #wal_log_hints = off # also do full page writes of
>> non-critical updates
>> # (change requires restart)
>> #wal_init_zero = on # zero-fill new WAL files
>> #wal_recycle = on # recycle WAL files
>> wal_buffers = 16MB # min 32kB, -1 sets based on
>> shared_buffers
>> # (change requires restart)
>> #wal_writer_delay = 200ms # 1-10000 milliseconds
>> #wal_writer_flush_after = 1MB # measured in pages, 0 disables
>> #wal_skip_threshold = 2MB
>>
>> #commit_delay = 0 # range 0-100000, in microseconds
>> #commit_siblings = 5 # range 1-1000
>>
>> # - Checkpoints -
>>
>> #checkpoint_timeout = 5min # range 30s-1d
>> max_wal_size = 8GB
>> min_wal_size = 2GB
>> checkpoint_completion_target = 0.9 # checkpoint target duration, 0.0
>> - 1.0
>> #checkpoint_flush_after = 256kB # measured in pages, 0 disables
>> #checkpoint_warning = 30s # 0 disables
>>
>> # - Archiving -
>>
>> #archive_mode = off # enables archiving; off, on, or always
>> # (change requires restart)
>> #archive_command = '' # command to use to archive a logfile
>> segment
>> # placeholders: %p = path of file to
>> archive
>> # %f = file name only
>> # e.g. 'test ! -f
>> /mnt/server/archivedir/%f && cp %p /mnt/server/archivedir/%f'
>> #archive_timeout = 0 # force a logfile segment switch after
>> this
>> # number of seconds; 0 disables
>>
>> # - Archive Recovery -
>>
>> # These are only used in recovery mode.
>>
>> #restore_command = '' # command to use to restore an archived
>> logfile segment
>> # placeholders: %p = path of file to
>> restore
>> # %f = file name only
>> # e.g. 'cp /mnt/server/archivedir/%f %p'
>> # (change requires restart)
>> #archive_cleanup_command = '' # command to execute at every restartpoint
>> #recovery_end_command = '' # command to execute at completion of
>> recovery
>>
>> # - Recovery Target -
>>
>> # Set these only when performing a targeted recovery.
>>
>> #recovery_target = '' # 'immediate' to end recovery as soon as a
>> # consistent state is reached
>> # (change requires restart)
>> #recovery_target_name = '' # the named restore point to which
>> recovery will proceed
>> # (change requires restart)
>> #recovery_target_time = '' # the time stamp up to which recovery
>> will proceed
>> # (change requires restart)
>> #recovery_target_xid = '' # the transaction ID up to which recovery
>> will proceed
>> # (change requires restart)
>> #recovery_target_lsn = '' # the WAL LSN up to which recovery will
>> proceed
>> # (change requires restart)
>> #recovery_target_inclusive = on # Specifies whether to stop:
>> # just after the specified recovery
>> target (on)
>> # just before the recovery target (off)
>> # (change requires restart)
>> #recovery_target_timeline = 'latest' # 'current', 'latest', or
>> timeline ID
>> # (change requires restart)
>> #recovery_target_action = 'pause' # 'pause', 'promote', 'shutdown'
>> # (change requires restart)
>>
>>
>>
>> #------------------------------------------------------------------------------
>> # REPLICATION
>>
>> #------------------------------------------------------------------------------
>>
>> # - Sending Servers -
>>
>> # Set these on the master and on any standby that will send replication
>> data.
>>
>> #max_wal_senders = 10 # max number of walsender processes
>> # (change requires restart)
>> #wal_keep_size = 0 # in megabytes; 0 disables
>> #max_slot_wal_keep_size = -1 # in megabytes; -1 disables
>> #wal_sender_timeout = 60s # in milliseconds; 0 disables
>>
>> #max_replication_slots = 10 # max number of replication slots
>> # (change requires restart)
>> #track_commit_timestamp = off # collect timestamp of transaction commit
>> # (change requires restart)
>>
>> # - Master Server -
>>
>> # These settings are ignored on a standby server.
>>
>> #synchronous_standby_names = '' # standby servers that provide sync rep
>> # method to choose sync standbys, number
>> of sync standbys,
>> # and comma-separated list of
>> application_name
>> # from standby(s); '*' = all
>> #vacuum_defer_cleanup_age = 0 # number of xacts by which cleanup is
>> delayed
>>
>> # - Standby Servers -
>>
>> # These settings are ignored on a master server.
>>
>> #primary_conninfo = '' # connection string to sending
>> server
>> #primary_slot_name = '' # replication slot on sending
>> server
>> #promote_trigger_file = '' # file name whose presence ends
>> recovery
>> #hot_standby = on # "off" disallows queries during
>> recovery
>> # (change requires restart)
>> #max_standby_archive_delay = 30s # max delay before canceling
>> queries
>> # when reading WAL from archive;
>> # -1 allows indefinite delay
>> # (change requires restart)
>> #max_sync_workers_per_subscription = 2 # taken from
>> max_logical_replication_workers
>>
>>
>>
>> #------------------------------------------------------------------------------
>> # QUERY TUNING
>>
>> #------------------------------------------------------------------------------
>>
>> # - Planner Method Configuration -
>>
>> #enable_bitmapscan = on
>> #enable_hashagg = on
>> #enable_hashjoin = on
>> #enable_indexscan = on
>> #enable_indexonlyscan = on
>> #enable_material = on
>> #enable_mergejoin = on
>> #enable_nestloop = on
>> #enable_parallel_append = on
>> #enable_seqscan = on
>> #enable_sort = on
>> #enable_incremental_sort = on
>> #enable_tidscan = on
>> #enable_partitionwise_join = off
>> #enable_partitionwise_aggregate = off
>> #enable_parallel_hash = on
>> #enable_partition_pruning = on
>>
>> # - Planner Cost Constants -
>>
>> #seq_page_cost = 1.0 # measured on an arbitrary scale
>> random_page_cost = 1.1 # same scale as above
>> #cpu_tuple_cost = 0.01 # same scale as above
>> #cpu_index_tuple_cost = 0.005 # same scale as above
>> #cpu_operator_cost = 0.0025 # same scale as above
>> #parallel_tuple_cost = 0.1 # same scale as above
>> #parallel_setup_cost = 1000.0 # same scale as above
>>
>> #jit_above_cost = 100000 # perform JIT compilation if
>> available
>> # and query more expensive than
>> this;
>> # -1 disables
>> #jit_inline_above_cost = 500000 # inline small functions if query
>> is
>> # more expensive than this; -1
>> disables
>> #jit_optimize_above_cost = 500000 # use expensive JIT optimizations
>> if
>> # query is more expensive than
>> this;
>> # -1 disables
>>
>> #min_parallel_table_scan_size = 8MB
>> #min_parallel_index_scan_size = 512kB
>> effective_cache_size = 24GB
>>
>> # - Genetic Query Optimizer -
>>
>> #geqo = on
>> #geqo_threshold = 12
>> #geqo_effort = 5 # range 1-10
>> #geqo_pool_size = 0 # selects default based on effort
>> #geqo_generations = 0 # selects default based on effort
>> #geqo_selection_bias = 2.0 # range 1.5-2.0
>> #geqo_seed = 0.0 # range 0.0-1.0
>>
>> # - Other Planner Options -
>>
>> #default_statistics_target = 100 # range 1-10000
>> #constraint_exclusion = partition # on, off, or partition
>> #cursor_tuple_fraction = 0.1 # range 0.0-1.0
>> #from_collapse_limit = 8
>> #join_collapse_limit = 8 # 1 disables collapsing of
>> explicit
>> # JOIN clauses
>> #force_parallel_mode = off
>> #jit = on # allow JIT compilation
>> #plan_cache_mode = auto # auto, force_generic_plan or
>> # force_custom_plan
>>
>>
>>
>> #------------------------------------------------------------------------------
>> # REPORTING AND LOGGING
>>
>> #------------------------------------------------------------------------------
>>
>> # - Where to Log -
>>
>> #log_destination = 'stderr' # Valid values are combinations of
>> # stderr, csvlog, syslog, and
>> eventlog,
>> # depending on platform. csvlog
>> # requires logging_collector to
>> be on.
>>
>> # This is used when logging to stderr:
>> #logging_collector = off # Enable capturing of stderr and
>> csvlog
>> # into log files. Required to be
>> on for
>> # csvlogs.
>> # (change requires restart)
>>
>> # These are only used if logging_collector is on:
>> #log_directory = 'log' # directory where log files are
>> written,
>> # can be absolute or relative to
>> PGDATA
>> #log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log' # log file name
>> pattern,
>> # can include strftime() escapes
>> #log_file_mode = 0600 # creation mode for log files,
>> # begin with 0 to use octal
>> notation
>> #log_truncate_on_rotation = off # If on, an existing log file
>> with the
>> # same name as the new log file
>> will be
>> # truncated rather than appended
>> to.
>> # But such truncation only occurs
>> on
>> # time-driven rotation, not on
>> restarts
>> # or size-driven rotation.
>> Default is
>> # off, meaning append to existing
>> files
>> # in all cases.
>> #log_rotation_age = 1d # Automatic rotation of logfiles
>> will
>> # happen after that time. 0
>> disables.
>> #log_rotation_size = 10MB # Automatic rotation of logfiles
>> will
>> # happen after that much log
>> output.
>> # 0 disables.
>>
>> # These are relevant when logging to syslog:
>> #syslog_facility = 'LOCAL0'
>> #syslog_ident = 'postgres'
>> #syslog_sequence_numbers = on
>> #syslog_split_messages = on
>>
>> # This is only relevant when logging to eventlog (win32):
>> # (change requires restart)
>> #event_source = 'PostgreSQL'
>>
>> # - When to Log -
>>
>> #log_min_messages = warning # values in order of decreasing
>> detail:
>> # debug5
>> # debug4
>> # debug3
>> # debug2
>> # debug1
>> # info
>> # notice
>> # warning
>> # error
>> # log
>> # fatal
>> # panic
>>
>> #log_min_error_statement = error # values in order of decreasing
>> detail:
>> # debug5
>> # debug4
>> # debug3
>> # debug2
>> # debug1
>> # info
>> # notice
>> # warning
>> # error
>> # log
>> # fatal
>> # panic (effectively off)
>>
>> #log_min_duration_statement = -1 # -1 is disabled, 0 logs all
>> statements
>> # and their durations, > 0 logs
>> only
>> # statements running at least
>> this number
>> # of milliseconds
>>
>> #log_min_duration_sample = -1 # -1 is disabled, 0 logs a sample
>> of statements
>> # and their durations, > 0 logs
>> only a sample of
>> # statements running at least
>> this number
>> # of milliseconds;
>> # sample fraction is determined
>> by log_statement_sample_rate
>>
>> #log_statement_sample_rate = 1.0 # fraction of logged statements
>> exceeding
>> # log_min_duration_sample to be
>> logged;
>> # 1.0 logs all such statements,
>> 0.0 never logs
>>
>>
>> #log_transaction_sample_rate = 0.0 # fraction of transactions whose
>> statements
>> # are logged regardless of their
>> duration; 1.0 logs all
>> # statements from all
>> transactions, 0.0 never logs
>>
>> # - What to Log -
>>
>> #debug_print_parse = off
>> #debug_print_rewritten = off
>> #debug_print_plan = off
>> #debug_pretty_print = on
>> #log_checkpoints = off
>> #log_connections = off
>> #log_disconnections = off
>> #log_duration = off
>> #log_error_verbosity = default # terse, default, or verbose
>> messages
>> #log_hostname = off
>> #log_line_prefix = '%m [%p] ' # special values:
>> # %a = application name
>> # %u = user name
>> # %d = database name
>> # %r = remote host and port
>> # %h = remote host
>> # %b = backend type
>> # %p = process ID
>> # %t = timestamp without
>> milliseconds
>> # %m = timestamp with
>> milliseconds
>> # %n = timestamp with
>> milliseconds (as a Unix epoch)
>> # %i = command tag
>> # %e = SQL state
>> # %c = session ID
>> # %l = session line number
>> # %s = session start timestamp
>> # %v = virtual transaction ID
>> # %x = transaction ID (0 if
>> none)
>> # %q = stop here in non-session
>> # processes
>> # %% = '%'
>> # e.g. '<%u%%%d> '
>> #log_lock_waits = off # log lock waits >=
>> deadlock_timeout
>> #log_parameter_max_length = -1 # when logging statements, limit
>> logged
>> # bind-parameter values to N
>> bytes;
>> # -1 means print in full, 0
>> disables
>> #log_parameter_max_length_on_error = 0 # when logging an error, limit
>> logged
>> # bind-parameter values to N
>> bytes;
>> # -1 means print in full, 0
>> disables
>> #log_statement = 'none' # none, ddl, mod, all
>> #log_replication_commands = off
>> #log_temp_files = -1 # log temporary files equal or
>> larger
>> # than the specified size in
>> kilobytes;
>> # -1 disables, 0 logs all temp
>> files
>> log_timezone = 'UTC'
>>
>>
>> #------------------------------------------------------------------------------
>> # PROCESS TITLE
>>
>> #------------------------------------------------------------------------------
>>
>> #cluster_name = '' # added to process titles if
>> nonempty
>> # (change requires restart)
>> #update_process_title = on
>>
>>
>>
>> #------------------------------------------------------------------------------
>> # STATISTICS
>>
>> #------------------------------------------------------------------------------
>>
>> # - Query and Index Statistics Collector -
>>
>> #track_activities = on
>> #track_counts = on
>> #track_io_timing = off
>> #track_functions = none # none, pl, all
>> #track_activity_query_size = 1024 # (change requires restart)
>> #stats_temp_directory = 'pg_stat_tmp'
>>
>>
>> # - Monitoring -
>>
>> #log_parser_stats = off
>> #log_planner_stats = off
>> #log_executor_stats = off
>> #log_statement_stats = off
>>
>>
>>
>> #------------------------------------------------------------------------------
>> # AUTOVACUUM
>>
>> #------------------------------------------------------------------------------
>>
>> #autovacuum = on # Enable autovacuum subprocess?
>> 'on'
>> # requires track_counts to also
>> be on.
>> #log_autovacuum_min_duration = -1 # -1 disables, 0 logs all actions
>> and
>> # their durations, > 0 logs only
>> # actions running at least this
>> number
>> # of milliseconds.
>> #autovacuum_max_workers = 3 # max number of autovacuum
>> subprocesses
>> # (change requires restart)
>> #autovacuum_naptime = 1min # time between autovacuum runs
>> #autovacuum_vacuum_threshold = 50 # min number of row updates before
>> # vacuum
>> #autovacuum_vacuum_insert_threshold = 1000 # min number of row
>> inserts
>> # before vacuum; -1 disables
>> insert
>> # vacuums
>> #autovacuum_analyze_threshold = 50 # min number of row updates before
>> # analyze
>> #autovacuum_vacuum_scale_factor = 0.2 # fraction of table size before
>> vacuum
>> #autovacuum_vacuum_insert_scale_factor = 0.2 # fraction of inserts
>> over table
>> # size before insert vacuum
>> #autovacuum_analyze_scale_factor = 0.1 # fraction of table size before
>> analyze
>> #autovacuum_freeze_max_age = 200000000 # maximum XID age before forced
>> vacuum
>> # (change requires restart)
>> #autovacuum_multixact_freeze_max_age = 400000000 # maximum
>> multixact age
>> # before forced vacuum
>> # (change requires restart)
>> #autovacuum_vacuum_cost_delay = 2ms # default vacuum cost delay for
>> # autovacuum, in milliseconds;
>> # -1 means use vacuum_cost_delay
>> #autovacuum_vacuum_cost_limit = -1 # default vacuum cost limit for
>> # autovacuum, -1 means use
>> # vacuum_cost_limit
>>
>>
>>
>> #------------------------------------------------------------------------------
>> # CLIENT CONNECTION DEFAULTS
>>
>> #------------------------------------------------------------------------------
>>
>> # - Statement Behavior -
>>
>> #client_min_messages = notice # values in order of decreasing
>> detail:
>> # debug5
>> # debug4
>> # debug3
>> # debug2
>> # debug1
>> # log
>> # notice
>> # warning
>> # error
>> #search_path = '"$user", public' # schema names
>> #row_security = on
>> #default_tablespace = '' # a tablespace name, '' uses the
>> default
>> #temp_tablespaces = '' # a list of tablespace names, ''
>> uses
>> # only default tablespace
>> #default_table_access_method = 'heap'
>> #check_function_bodies = on
>> #default_transaction_isolation = 'read committed'
>> #default_transaction_read_only = off
>> #default_transaction_deferrable = off
>> #session_replication_role = 'origin'
>> #statement_timeout = 0 # in milliseconds, 0 is disabled
>> #lock_timeout = 0 # in milliseconds, 0 is disabled
>> #idle_in_transaction_session_timeout = 0 # in milliseconds, 0 is
>> disabled
>> #vacuum_freeze_min_age = 50000000
>> #vacuum_freeze_table_age = 150000000
>> #vacuum_multixact_freeze_min_age = 5000000
>> #vacuum_multixact_freeze_table_age = 150000000
>> #vacuum_cleanup_index_scale_factor = 0.1 # fraction of total
>> number of tuples
>> # before index cleanup, 0
>> always performs
>> # index cleanup
>> #bytea_output = 'hex' # hex, escape
>> #xmlbinary = 'base64'
>> #xmloption = 'content'
>> #gin_fuzzy_search_limit = 0
>> #gin_pending_list_limit = 4MB
>>
>> # - Locale and Formatting -
>>
>> datestyle = 'iso, mdy'
>> #intervalstyle = 'postgres'
>> timezone = 'UTC'
>> #timezone_abbreviations = 'Default' # Select the set of available
>> time zone
>> # abbreviations. Currently,
>> there are
>> # Default
>> # Australia (historical usage)
>> # India
>> # You can create your own file in
>> # share/timezonesets/.
>> #extra_float_digits = 1 # min -15, max 3; any value >0
>> actually
>> # selects precise output mode
>> #client_encoding = sql_ascii # actually, defaults to database
>> # encoding
>>
>> # These settings are initialized by initdb, but they can be changed.
>> lc_messages = 'en_US.utf8' # locale for system error
>> message
>> # strings
>> lc_monetary = 'en_US.utf8' # locale for monetary
>> formatting
>> lc_numeric = 'en_US.utf8' # locale for number
>> formatting
>> lc_time = 'en_US.utf8' # locale for time
>> formatting
>>
>> # default configuration for text search
>> default_text_search_config = 'pg_catalog.english'
>>
>> # - Shared Library Preloading -
>>
>> #shared_preload_libraries = '' # (change requires restart)
>> shared_preload_libraries = 'pg_stat_statements'
>> pg_stat_statements.track = all
>> #local_preload_libraries = ''
>> #session_preload_libraries = ''
>> #jit_provider = 'llvmjit' # JIT library to use
>>
>> # - Other Defaults -
>>
>> #dynamic_library_path = '$libdir'
>>
>>
>>
>> #------------------------------------------------------------------------------
>> # LOCK MANAGEMENT
>>
>> #------------------------------------------------------------------------------
>>
>> #deadlock_timeout = 1s
>> #max_locks_per_transaction = 64 # min 10
>> # (change requires restart)
>> #max_pred_locks_per_transaction = 64 # min 10
>> # (change requires restart)
>> #max_pred_locks_per_relation = -2 # negative values mean
>> # (max_pred_locks_per_transaction
>> # /
>> -max_pred_locks_per_relation) - 1
>> #max_pred_locks_per_page = 2 # min 0
>>
>>
>>
>> #------------------------------------------------------------------------------
>> # VERSION AND PLATFORM COMPATIBILITY
>>
>> #------------------------------------------------------------------------------
>>
>> # - Previous PostgreSQL Versions -
>>
>> #array_nulls = on
>> #backslash_quote = safe_encoding # on, off, or safe_encoding
>> #escape_string_warning = on
>> #lo_compat_privileges = off
>> #operator_precedence_warning = off
>> #quote_all_identifiers = off
>> #standard_conforming_strings = on
>> #synchronize_seqscans = on
>>
>> # - Other Platforms and Clients -
>>
>> #transform_null_equals = off
>>
>>
>>
>> #------------------------------------------------------------------------------
>> # ERROR HANDLING
>>
>> #------------------------------------------------------------------------------
>>
>> #exit_on_error = off # terminate session on any error?
>> #restart_after_crash = on # reinitialize after backend
>> crash?
>> #data_sync_retry = off # retry or panic on failure to
>> fsync
>> # data?
>> # (change requires restart)
>>
>>
>>
>> #------------------------------------------------------------------------------
>> # CONFIG FILE INCLUDES
>>
>> #------------------------------------------------------------------------------
>>
>> # These options allow settings to be loaded from files other than the
>> # default postgresql.conf. Note that these are directives, not variable
>> # assignments, so they can usefully be given more than once.
>>
>> #include_dir = '...' # include files ending in '.conf'
>> from
>> # a directory, e.g., 'conf.d'
>> #include_if_exists = '...' # include file only if it exists
>> #include = '...' # include file
>>
>>
>>
>> #------------------------------------------------------------------------------
>> # CUSTOMIZED OPTIONS
>>
>> #------------------------------------------------------------------------------
>>
>> # Add settings for extensions here
>>
>>
>>
>> On Sunday, Oct 11, 2020 at 2:37 PM, Pavel Stehule <
>> pavel(dot)stehule(at)gmail(dot)com> wrote:
>>
>>
>> ne 11. 10. 2020 v 3:13 odesílatel Raphael Megzari <raphael(at)megzari(dot)com>
>> napsal:
>>
>>> ok here is the backtrace that I got
>>>
>>> Let me know if you need anything else
>>>
>>
>> please, can you install debug symbols for Postgres. In this backtrace is
>> not detail information.
>>
>> It's strange so Postgres crashes in LWLockAttemptLock
>>
>> Maybe there is problem in
>> https://github.com/postgres/postgres/commit/bb16aba50c9492490a0b57e600a932798f45cd4f
>>
>> Do you use serializable level of transaction isolations?
>>
>>
>>
>>
>>> #0 0x0000556931d0ba55 in LWLockAttemptLock ()
>>> #1 0x0000556931d0c537 in LWLockAcquire ()
>>> #2 0x0000556931cefe83 in ReadBuffer_common ()
>>> #3 0x0000556931cf0626 in ReadBufferExtended ()
>>> #4 0x0000556931a8c9b0 in heapgetpage ()
>>> #5 0x0000556931a8cf09 in heapgettup_pagemode ()
>>> #6 0x0000556931a8de3e in heap_getnextslot ()
>>> #7 0x0000556931bf27fe in SeqNext ()
>>> #8 0x0000556931bd15b7 in ExecScan ()
>>> #9 0x0000556931bf115f in ExecNestLoop ()
>>> #10 0x0000556931bf115f in ExecNestLoop ()
>>> #11 0x0000556931be1147 in ExecGather ()
>>> #12 0x0000556931bc8a2b in standard_ExecutorRun ()
>>> #13 0x00007f10dcb8d345 in pgss_ExecutorRun () from
>>> /usr/local/lib/postgresql/pg_stat_statements.so
>>> #14 0x0000556931d1e41c in PortalRunSelect ()
>>> #15 0x0000556931d1f5d6 in PortalRun ()
>>> #16 0x0000556931d1cb58 in PostgresMain ()
>>> #17 0x0000556931caa3d7 in ServerLoop ()
>>> #18 0x0000556931cab333 in PostmasterMain ()
>>> #19 0x0000556931a4db7c in main ()
>>>
>>>
>>>
>>>
>>> On Saturday, Oct 10, 2020 at 11:57 PM, Pavel Stehule <
>>> pavel(dot)stehule(at)gmail(dot)com> wrote:
>>>
>>>
>>> so 10. 10. 2020 v 16:51 odesílatel Raphael Megzari <raphael(at)megzari(dot)com>
>>> napsal:
>>>
>>>> I'm not really sure how to read that binary file.
>>>>
>>>> I have uploaded to an s3 bucket and made it public.
>>>> Anyone should be able to access that file
>>>> *https://s3.eu-central-1.wasabisys.com/union-backups/core_dump.gz
>>>> <https://s3.eu-central-1.wasabisys.com/union-backups/core_dump.gz>*
>>>>
>>>
>>> this is not good idea
>>>
>>> see https://stackoverflow.com/questions/5115613/core-dump-file-analysis
>>>
>>> Pavel
>>>
>>>
>>>>
>>>> it's 2GB
>>>>
>>>> If you have a link to a documentation of how I can read that file and
>>>> get the stacktrace, I would be glad to give it a read.
>>>>
>>>>
>>>>
>>>> On Saturday, Oct 10, 2020 at 8:56 PM, Pavel Stehule <
>>>> pavel(dot)stehule(at)gmail(dot)com> wrote:
>>>>
>>>>
>>>> so 10. 10. 2020 v 13:27 odesílatel Raphael Megzari <raphael(at)megzari(dot)com>
>>>> napsal:
>>>>
>>>>> Awesome, thank you!
>>>>> It's the right thing.
>>>>>
>>>>> How do I share it?
>>>>>
>>>>
>>>> important is the backtrace
>>>>
>>>> paste it to mail
>>>>
>>>>
>>>>
>>>>>
>>>>>
>>>>> On Saturday, Oct 10, 2020 at 8:24 PM, Pavel Stehule <
>>>>> pavel(dot)stehule(at)gmail(dot)com> wrote:
>>>>>
>>>>>
>>>>> so 10. 10. 2020 v 13:19 odesílatel Raphael Megzari <
>>>>> raphael(at)megzari(dot)com> napsal:
>>>>>
>>>>>> Thank you for taking the time to have a look.
>>>>>>
>>>>>> I'm not sure how to enable core dump with the docker image.
>>>>>>
>>>>>> I've seen some documentation where the db is started with pg_ctl anc
>>>>>> a "c" flag. I couldn't find anything on enabling it on the docker image.
>>>>>>
>>>>>> in my data folder, I have a huge core file (8 GB). Would it be
>>>>>> possible that it is the core dump file generated after the segfault?
>>>>>>
>>>>>
>>>>> you can check a create time
>>>>>
>>>>> Pavel
>>>>>
>>>>>
>>>>>> Raphael
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Saturday, Oct 10, 2020 at 6:04 PM, Pavel Stehule <
>>>>>> pavel(dot)stehule(at)gmail(dot)com> wrote:
>>>>>> Hi
>>>>>>
>>>>>>
>>>>>>> If I can help in any ways, please let me know.
>>>>>>> I don't mind trying things, like I said, the bug happens about every
>>>>>>> 2
>>>>>>> days.
>>>>>>>
>>>>>>
>>>>>> This is a bug, but from your bug report isn't possible to detect any
>>>>>> information.
>>>>>>
>>>>>> Can you enable core dump generating, and can you send a core dump?
>>>>>>
>>>>>> Regards
>>>>>>
>>>>>> Pavel
>>>>>>
>>>>>>>
>>>>>>> Cheers!
>>>>>>>
>>>>>>>