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OpenIO SDS configuration

oio-sds allows you to alter a lot of configuration at compile-time as well at runtime. We use a minimal generation tool for a set of variables that can be modified at runtime, and whose default value can be changed at the compile-time. Those variables are described here

Some variables, though, are not configurable yet, and still require a value to be fixed once for all when compiling the code. Please find below the list of the cmake directives to control such variables.

Compile-time only configuration

Macro Default Description
OIOSDS_RELEASE "master" Global release name
OIOSDS_PROJECT_VERSION_SHORT "1.0" Minor version number

Used by gcc

Macro Default Description
DAEMON_DEFAULT_TIMEOUT_READ 1000 How long a gridd will block on a recv() (in milliseconds)
DAEMON_DEFAULT_TIMEOUT_ACCEPT 1000 How long a gridd will block on a accept() (in milliseconds)
Macro Default Description
OIO_EVT_BEANSTALKD_DEFAULT_TUBE "oio"
Macro Default Description
GCLUSTER_RUN_DIR "/var/run" Prefix to spool.
GCLUSTER_CONFIG_FILE_PATH "/etc/oio/sds.conf" System-wide configuration file
GCLUSTER_CONFIG_DIR_PATH "/etc/oio/sds.conf.d" System-wide configuration directory for additional files.
GCLUSTER_CONFIG_LOCAL_PATH ".oio/sds.conf" Local configuration directory.
GCLUSTER_AGENT_SOCK_PATH "/var/run/oio-sds-agent.sock" Default path for agent's socket.
Macro Default Description
PROXYD_PREFIX "v3.0" Prefix applied to proxyd's URL, second version (with accounts)
PROXYD_HEADER_PREFIX "X-oio-" Prefix for all the headers sent to the proxy
PROXYD_HEADER_REQID PROXYD_HEADER_PREFIX "req-id" Header whose value is printed in access log, destined to aggregate several requests belonging to the same session.
PROXYD_HEADER_NOEMPTY PROXYD_HEADER_PREFIX "no-empty-list" Flag sent to the proxy to turn empty list (results) into 404 not found.
Macro Default Description
OIO_STAT_PREFIX_REQ "counter req.hits"
OIO_STAT_PREFIX_TIME "counter req.time"
Macro Default Description
SQLX_DIR_SCHEMAS NULL Default directory used to gather applicative schema of SQLX bases. NULL by default, meaning that no directory is set, so that there is no attempt to load a schema.
SQLX_ADMIN_PREFIX_SYS "sys." Prefix used for keys used in admin table of sqlite bases
SQLX_ADMIN_PREFIX_USER "user." Prefix used for keys used in admin table of sqlite bases
SQLX_ADMIN_INITFLAG SQLX_ADMIN_PREFIX_SYS "sqlx.init" Key used in admin table of sqlite bases
SQLX_ADMIN_STATUS SQLX_ADMIN_PREFIX_SYS "sqlx.flags" Key used in admin table of sqlite bases
SQLX_ADMIN_REFERENCE SQLX_ADMIN_PREFIX_SYS "sqlx.reference" Key used in admin table of sqlite bases
SQLX_ADMIN_BASENAME SQLX_ADMIN_PREFIX_SYS "sqlx.name" Key used in admin table of sqlite bases
SQLX_ADMIN_BASETYPE SQLX_ADMIN_PREFIX_SYS "sqlx.type" Key used in admin table of sqlite bases
SQLX_ADMIN_NAMESPACE SQLX_ADMIN_PREFIX_SYS "sqlx.ns" Key used in admin table of sqlite bases
Macro Default Description
M2V2_ADMIN_PREFIX_SYS SQLX_ADMIN_PREFIX_SYS "m2."
M2V2_ADMIN_PREFIX_USER SQLX_ADMIN_PREFIX_USER "m2."
M2V2_ADMIN_VERSION M2V2_ADMIN_PREFIX_SYS "version"
M2V2_ADMIN_QUOTA M2V2_ADMIN_PREFIX_SYS "quota"
M2V2_ADMIN_SIZE M2V2_ADMIN_PREFIX_SYS "usage"
M2V2_ADMIN_CTIME M2V2_ADMIN_PREFIX_SYS "ctime"
M2V2_ADMIN_VERSIONING_POLICY M2V2_ADMIN_PREFIX_SYS "policy.version"
M2V2_ADMIN_STORAGE_POLICY M2V2_ADMIN_PREFIX_SYS "policy.storage"
M2V2_ADMIN_KEEP_DELETED_DELAY M2V2_ADMIN_PREFIX_SYS "keep_deleted_delay"
META2_INIT_FLAG M2V2_ADMIN_PREFIX_SYS "init"
Macro Default Description
RAWX_HEADER_PREFIX "X-oio-chunk-meta-" Prefix for all the headers sent/received with the rawx
Macro Default Description
OIO_USE_OLD_FMEMOPEN undefined Use the old implementation of glibc's fmemopen. Starting from glibc 2.22 the new implementation lacks the binary mode which made things work.

Start-up configuration

RAWX

Name Type Default Description
docroot string MANDATORY Chunks root directory
namespace string MANDATORY Namespace name
hash_width number 3 How many hexdigits must be used to name the indirection directories
hash_depth number 1 How many levels of directories are used to store chunks
fsync boolean disabled At the end of an upload, perform a fsync() on the chunk file itself
fsync_dir boolean enabled At the end of an upload, perform a fsync() on the directory holding the chunk
fallocate boolean enabled Preallocate space for the chunk file
checksum string (enabled,disabled,smart) enabled Enable checksumming the body of PUT

Fully configurable variables (compilation & runtime)

Variables for production purposes

client.down_cache.avoid

Should an error be raised when the peer is marked down, instead of trying to contact the peer.

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_CLIENT_DOWN_CACHE_AVOID

client.down_cache.shorten

Should the connection timeout be dramatically shortened when talking to a peer that has been reported down. Set to false by default, this is evaluated after the avoidance of those peers.

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_CLIENT_DOWN_CACHE_SHORTEN

client.errors_cache.enabled

Should the client feed a cache with the network errors it encounters, and should those errors be used to prevent RPC to be performed toward 'too-faulty' peers.

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_CLIENT_ERRORS_CACHE_ENABLED

client.errors_cache.max

Sets the number of faults (on the period given by client.errors_cache.period) beyond which a peer is considered as too faulty to try a new RPC.

  • default: 60
  • type: guint64
  • cmake directive: OIO_CLIENT_ERRORS_CACHE_MAX
  • range: 1 -> 4294967296

client.errors_cache.period

Sets the size of the time window used to count the number of network errors.

  • default: 60
  • type: gint64
  • cmake directive: OIO_CLIENT_ERRORS_CACHE_PERIOD
  • range: 1 -> 3600

common.verbosity.reset_delay

Tells how long the verbosity remains higher before being reset to the default, after a SIGUSR1 has been received.

  • default: 5 * G_TIME_SPAN_MINUTE
  • type: gint64
  • cmake directive: OIO_COMMON_VERBOSITY_RESET_DELAY
  • range: 1 * G_TIME_SPAN_SECOND -> 1 * G_TIME_SPAN_HOUR

core.chunk_size.max

Should the C API adjust the chunk size when over this ceiling. Set to 0 for no action.

  • default: 0
  • type: gint64
  • cmake directive: OIO_CORE_CHUNK_SIZE_MAX
  • range: 0 -> G_MAXINT64

core.chunk_size.min

Should the C API adjust the chunk size when below this threshold. Set to 0 for no action

  • default: 10000000
  • type: gint64
  • cmake directive: OIO_CORE_CHUNK_SIZE_MIN
  • range: 0 -> G_MAXINT64

core.http.user_agent

HTTP User-Agent to be used between any C client and the proxy

  • default: ****
  • type: string
  • cmake directive: OIO_CORE_HTTP_USER_AGENT

core.lb.allow_distance_bypass

Compare the number of items to select to the number of items available at the current location level, and decide if it is desirable to bypass or slacken the time-consuming distance checks. Disable this if you detect too many situations where distance between selected items could have been bigger.

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_CORE_LB_ALLOW_DISTANCE_BYPASS

core.lb.generate_random_chunk_ids

Generate random, 64 bytes long chunk IDs. If set to false, the chunk IDs will be generated from the container and object names, object version and storage policy, and chunk position.

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_CORE_LB_GENERATE_RANDOM_CHUNK_IDS

core.lb.try_fair_constraints_first

First try to find an ideal solution using the 'fair_location_constraint'. This try will make up to 'core.lb.weighted_random_attempts' attempts for each element to be selected. So if no ideal solution is found, there will be a second try (with the same number of attempts) using the 'strict_location_constraint'.

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_CORE_LB_TRY_FAIR_CONSTRAINTS_FIRST

core.lb.weighted_random_attempts

How many times shall we try to select a service using a weighted random algorithm, before switching to the shuffled selection. Increase this if you observe too many choices of low-score services while high-score services are available.

  • default: 8
  • type: guint32
  • cmake directive: OIO_CORE_LB_WEIGHTED_RANDOM_ATTEMPTS
  • range: 1 -> 64000

core.lb.writer_lock_alert_delay

Dump the time spent while holding the global writer lock, when the lock is held for longer than this threshold (in microseconds).

  • default: 5000
  • type: gint64
  • cmake directive: OIO_CORE_LB_WRITER_LOCK_ALERT_DELAY
  • range: 1 -> 60 * G_TIME_SPAN_SECOND

core.period.refresh.cpu_idle

Sets the minimal amount of time between two refreshes of the known CPU-idle counters for the current host. Keep this value small.

  • default: 1 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_CORE_PERIOD_REFRESH_CPU_IDLE
  • range: 100 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_HOUR

core.period.refresh.io_idle

Sets the minimal amount of time between two refreshes of the known IO-idle counters for the current host. Keep this small.

  • default: 1 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_CORE_PERIOD_REFRESH_IO_IDLE
  • range: 100 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_HOUR

core.period.refresh.major_minor

Sets the minimal amount of time between two refreshes of the list of the major/minor numbers of the known devices, currently mounted on the current host. If the set of mounted file systems doesn't change, keep this value high.

  • default: 30 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_CORE_PERIOD_REFRESH_MAJOR_MINOR
  • range: 100 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_HOUR

core.resolver.dir_shuffle

TODO: to be documented

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_CORE_RESOLVER_DIR_SHUFFLE

core.resolver.srv_shuffle

TODO: to be documented

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_CORE_RESOLVER_SRV_SHUFFLE

core.sds.adapt_metachunk_size

Should the client adapt metachunk size to EC policy parameters? Letting this on will make bigger metachunks, but chunks on storage will stay at normal chunk size. Disabling this option allows clients to do write alignment.

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_CORE_SDS_ADAPT_METACHUNK_SIZE

core.sds.autocreate

In the current oio-sds client SDK, should the entities be autocreated while accessed for the first time. So, when pushing a content in a container, when this option is set to 'true', the USER and the CONTAINER will be created and configured to the namespace's defaults.

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_CORE_SDS_AUTOCREATE

core.sds.noshuffle

In the current oio-sds client SDK, should the rawx services be shuffled before accessed. This helps ensuring a little load-balancing on the client side.

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_CORE_SDS_NOSHUFFLE

core.sds.strict_utf8

Should the object URLs be checked for non-UTF-8 characters? Disable this only if you have trouble reading old objects, uploaded before we check for invalid names.

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_CORE_SDS_STRICT_UTF8

core.sds.timeout.cnx.rawx

Sets the connection timeout for requests issued to rawx services.

  • default: 5.0
  • type: gdouble
  • cmake directive: OIO_CORE_SDS_TIMEOUT_CNX_RAWX
  • range: 0.001 -> 300.0

core.sds.timeout.req.rawx

Sets the global timeout when uploading a chunk to a rawx service.

  • default: 60.0
  • type: gdouble
  • cmake directive: OIO_CORE_SDS_TIMEOUT_REQ_RAWX
  • range: 0.001 -> 600.0

core.sds.version

The version of the sds. It's used to know the expected metadata of a chunk

  • default: 4.2
  • type: string
  • cmake directive: OIO_CORE_SDS_VERSION

events.amqp.bind_args

Parameters to pass when binding a queue to an exchange, separated by ','.

  • default: ****
  • type: string
  • cmake directive: OIO_EVENTS_AMQP_BIND_ARGS

events.amqp.bind_routing_key

Routing key used when binding a queue to an exchange (should not be confused with the routing key used when sending an event).

  • default: #
  • type: string
  • cmake directive: OIO_EVENTS_AMQP_BIND_ROUTING_KEY

events.amqp.exchange_args

Parameters to pass when declaring the exchange, separated by ','.

  • default: ****
  • type: string
  • cmake directive: OIO_EVENTS_AMQP_EXCHANGE_ARGS

events.amqp.exchange_name

Name of the exchange to declare.

  • default: oio
  • type: string
  • cmake directive: OIO_EVENTS_AMQP_EXCHANGE_NAME

events.amqp.exchange_type

Type of the exchange to declare.

  • default: topic
  • type: string
  • cmake directive: OIO_EVENTS_AMQP_EXCHANGE_TYPE

events.amqp.queue_args

Parameters to pass when declaring a queue, separated by ','.

  • default: x-queue-type=quorum
  • type: string
  • cmake directive: OIO_EVENTS_AMQP_QUEUE_ARGS

events.amqp.queue_name

Name of the queue to declare.

  • default: oio
  • type: string
  • cmake directive: OIO_EVENTS_AMQP_QUEUE_NAME

events.beanstalkd.check_level_alert

Set a threshold for the number of items in the beanstalkd, so that the service will alert past that value. Set to 0 for no alert sent.

  • default: 0
  • type: gint64
  • cmake directive: OIO_EVENTS_BEANSTALKD_CHECK_LEVEL_ALERT
  • range: 0 -> G_MAXINT64

events.beanstalkd.check_level_deny

Set the maximum number of items in beanstalkd before considering it full

  • default: 512000
  • type: gint64
  • cmake directive: OIO_EVENTS_BEANSTALKD_CHECK_LEVEL_DENY
  • range: 0 -> G_MAXINT64

events.beanstalkd.delay

Sets the delay on each notification sent to the BEANSTALK endpoint

  • default: 0
  • type: gint64
  • cmake directive: OIO_EVENTS_BEANSTALKD_DELAY
  • range: 0 -> 86400

events.beanstalkd.prio

Sets the priority of each notification sent to the BEANSTALK endpoint

  • default: 2147483648
  • type: guint
  • cmake directive: OIO_EVENTS_BEANSTALKD_PRIO
  • range: 0 -> 2147483648

events.beanstalkd.timeout

Set the interval between each check of the beanstalkd availability. Set to 0 to never check.

  • default: 4 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_EVENTS_BEANSTALKD_TIMEOUT
  • range: 100 * G_TIME_SPAN_MILLISECOND -> 90 * G_TIME_SPAN_SECOND

events.beanstalkd.ttr

Sets the TTR (time to run) allow on the treatment of the notification sent to the beanstalkd

  • default: 120
  • type: gint64
  • cmake directive: OIO_EVENTS_BEANSTALKD_TTR
  • range: 0 -> 86400

events.common.check_period

Set the interval between each check of the beanstalkd availability. Set to 0 to never check.

  • default: 30 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_EVENTS_COMMON_CHECK_PERIOD
  • range: 0 -> 1 * G_TIME_SPAN_DAY

events.common.pending.delay

Sets the buffering delay of the events emitted by the application

  • default: 1 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_EVENTS_COMMON_PENDING_DELAY
  • range: 1 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_HOUR

events.common.pending.max

Sets the maximum number of pending events, not received yet by the endpoint

  • default: 10000
  • type: guint32
  • cmake directive: OIO_EVENTS_COMMON_PENDING_MAX
  • range: 1 -> 1048576

events.fallback.log.token_id

Set the token_id for event logging in case of cluster failure

  • default: ****
  • type: string
  • cmake directive: OIO_EVENTS_FALLBACK_LOG_TOKEN_ID

events.kafka.acks

Set the acknowledgement policy. Allowed values: all, -1, 0, 1

  • default: all
  • type: string
  • cmake directive: OIO_EVENTS_KAFKA_ACKS

events.kafka.flush

Flush message after produce

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_EVENTS_KAFKA_FLUSH

events.kafka.options

Set the Kafka client options

  • default: ****
  • type: string
  • cmake directive: OIO_EVENTS_KAFKA_OPTIONS

events.kafka.timeout.flush

Set the Kafka client flush timeout

  • default: 0
  • type: gint64
  • cmake directive: OIO_EVENTS_KAFKA_TIMEOUT_FLUSH
  • range: 0 -> 1 * G_TIME_SPAN_DAY

events.kafka.timeouts.flush

Set the Kafka client flush timeout on events queue shutdown (ms)

  • default: 10 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_EVENTS_KAFKA_TIMEOUTS_FLUSH
  • range: 0 -> 1 * G_TIME_SPAN_DAY

events.zmq.max_recv

Sets the maximum number of ACK managed by the ZMQ notification client

  • default: 32
  • type: guint
  • cmake directive: OIO_EVENTS_ZMQ_MAX_RECV
  • range: 1 -> 1073741824

gridd.timeout.connect.common

Sets the connection timeout, involved in any RPC to a 'meta' service.

  • default: 4.0
  • type: gdouble
  • cmake directive: OIO_GRIDD_TIMEOUT_CONNECT_COMMON
  • range: 0.1 -> 30.0

gridd.timeout.single.common

Sets the default timeout for unitary (request/response) RPC, without considering the possible redirection.

  • default: 30.0
  • type: gdouble
  • cmake directive: OIO_GRIDD_TIMEOUT_SINGLE_COMMON
  • range: 0.01 -> 120.0

gridd.timeout.whole.common

Sets the global timeout of a RPC to e 'meta' service, considering all the possible redirections.

  • default: 30.0
  • type: gdouble
  • cmake directive: OIO_GRIDD_TIMEOUT_WHOLE_COMMON
  • range: 0.1 -> 120.0

meta.queue.max_delay

Anti-DDoS counter-measure. In the current server, sets the maximum amount of time a queued TCP event may remain in the queue. If an event is polled and the thread sees the event stayed longer than that delay, A '503 Unavailable' error is replied.

  • default: 40 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_META_QUEUE_MAX_DELAY
  • range: 10 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_HOUR

meta0.outgoing.timeout.common.req

Sets the timeout to the set of (quick) RPC that query a meta0 service

  • default: 10.0
  • type: gdouble
  • cmake directive: OIO_META0_OUTGOING_TIMEOUT_COMMON_REQ
  • range: 0.01 -> 60.0

meta1.outgoing.timeout.common.req

Sets the timeout to the set of (quick) RPC that query a meta1 service

  • default: 10.0
  • type: gdouble
  • cmake directive: OIO_META1_OUTGOING_TIMEOUT_COMMON_REQ
  • range: 0.01 -> 60.0

meta1.tube.services

TODO: to be documented

  • default: oio
  • type: string
  • cmake directive: OIO_META1_TUBE_SERVICES

meta2.batch.maxlen

When listing a container, limits the number of items to that value.

  • default: 1000
  • type: guint
  • cmake directive: OIO_META2_BATCH_MAXLEN
  • range: 1 -> 100000

meta2.checkpoints_directory

Directory in which symlinks to containers to proceess will be stored.

  • default: ****
  • type: string
  • cmake directive: OIO_META2_CHECKPOINTS_DIRECTORY

meta2.container.max_size

How many bytes may be stored in each container.

  • default: 0
  • type: gint64
  • cmake directive: OIO_META2_CONTAINER_MAX_SIZE
  • range: 0 -> G_MAXINT64

meta2.delete_exceeding_versions

When adding alias with versioning, deletes exceeding versions.

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_META2_DELETE_EXCEEDING_VERSIONS

meta2.drain_limit

When draining a container, limits the number of drained objects per call.

  • default: 1000
  • type: gint64
  • cmake directive: OIO_META2_DRAIN_LIMIT
  • range: 0 -> 100000

meta2.flush_limit

When flushing a container, limits the number of deleted objects.

  • default: 1000
  • type: gint64
  • cmake directive: OIO_META2_FLUSH_LIMIT
  • range: 0 -> G_MAXINT64

meta2.generate.precheck

Should the meta2 check the container state (quota, etc) before generating chunks.

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_META2_GENERATE_PRECHECK

meta2.max_versions

Namespace configuration of the max number of versions for a single alias, in a container.

  • default: 1
  • type: gint64
  • cmake directive: OIO_META2_MAX_VERSIONS
  • range: -1 -> G_MAXINT64

meta2.reload.nsinfo.period

Sets the period of the periodical reloading of the namespace configuration, in the current meta2 service.

  • default: 5
  • type: gint64
  • cmake directive: OIO_META2_RELOAD_NSINFO_PERIOD
  • range: 1 -> 3600

meta2.retention_period

How long should deleted content be kept.

  • default: 604800
  • type: gint64
  • cmake directive: OIO_META2_RETENTION_PERIOD
  • range: 1 -> 2592000

meta2.sharding.max_entries_cleaned

Maximum number of entries cleaned in meta2 database. Of course, the higher this number, the longer the cleaning request will be.

  • default: 10000
  • type: gint64
  • cmake directive: OIO_META2_SHARDING_MAX_ENTRIES_CLEANED
  • range: 1 -> 1000000

meta2.sharding.max_entries_merged

Maximum number of entries merged in meta2 database. Of course, the higher this number, the longer the merging request will be.

  • default: 10000
  • type: gint64
  • cmake directive: OIO_META2_SHARDING_MAX_ENTRIES_MERGED
  • range: 10000 -> 1000000

meta2.sharding.replicated_clean_timeout

Maximum time to clean a shard (in replicated mode) from the moment the lock is taken.

  • default: 1 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_META2_SHARDING_REPLICATED_CLEAN_TIMEOUT
  • range: 1 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_MINUTE

meta2.sharding.timeout

Maximum time allowed between the preparation phase and the locking phase to shard a container.

  • default: 12 * G_TIME_SPAN_MINUTE
  • type: gint64
  • cmake directive: OIO_META2_SHARDING_TIMEOUT
  • range: 1 * G_TIME_SPAN_SECOND -> 1 * G_TIME_SPAN_HOUR

meta2.store_chunk_ids

Should the meta2 store complete chunk IDs (URL) or just store service IDs. If this is set to false, core.lb.generate_random_chunk_ids should be set to false also.

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_META2_STORE_CHUNK_IDS

meta2.tube.container_deleted

Tube name (or routing key) for 'storage.container.deleted' events.

  • default: oio
  • type: string
  • cmake directive: OIO_META2_TUBE_CONTAINER_DELETED

meta2.tube.container_new

Tube name (or routing key) for 'storage.container.new' events.

  • default: oio
  • type: string
  • cmake directive: OIO_META2_TUBE_CONTAINER_NEW

meta2.tube.container_state

Tube name (or routing key) for 'storage.container.state' events.

  • default: oio
  • type: string
  • cmake directive: OIO_META2_TUBE_CONTAINER_STATE

meta2.tube.container_updated

Tube name (or routing key) for 'storage.container.update' events.

  • default: oio
  • type: string
  • cmake directive: OIO_META2_TUBE_CONTAINER_UPDATED

meta2.tube.content_appended

Tube name (or routing key) for 'storage.content.append' events.

  • default: oio
  • type: string
  • cmake directive: OIO_META2_TUBE_CONTENT_APPENDED

meta2.tube.content_broken

Tube name (or routing key) for 'storage.content.broken' events.

  • default: oio
  • type: string
  • cmake directive: OIO_META2_TUBE_CONTENT_BROKEN

meta2.tube.content_created

Tube name (or routing key) for 'storage.content.new' events.

  • default: oio
  • type: string
  • cmake directive: OIO_META2_TUBE_CONTENT_CREATED

meta2.tube.content_deleted

Tube name (or routing key) for 'storage.content.deleted' events.

  • default: oio
  • type: string
  • cmake directive: OIO_META2_TUBE_CONTENT_DELETED

meta2.tube.content_drained

Tube name (or routing key) for 'storage.content.drained' events.

  • default: oio
  • type: string
  • cmake directive: OIO_META2_TUBE_CONTENT_DRAINED

meta2.tube.content_updated

Tube name (or routing key) for 'storage.content.update' events.

  • default: oio
  • type: string
  • cmake directive: OIO_META2_TUBE_CONTENT_UPDATED

meta2.tube.meta2_deleted

Tube name (or routing key) for 'storage.meta2.deleted' events.

  • default: oio
  • type: string
  • cmake directive: OIO_META2_TUBE_META2_DELETED

ns.chunk_size

Default chunk size for the given namespace.

  • default: 10485760
  • type: gint64
  • cmake directive: OIO_NS_CHUNK_SIZE
  • range: 1 -> G_MAXINT64

ns.flat_bits

Default number of bits with flat-NS computation.

  • default: 17
  • type: guint
  • cmake directive: OIO_NS_FLAT_BITS
  • range: 0 -> 64

ns.meta1_digits

Default number of digits to aggregate meta1 databases.

  • default: 4
  • type: guint
  • cmake directive: OIO_NS_META1_DIGITS
  • range: 0 -> 4

ns.region

Geographical region where the cluster has been deployed (case insensitive).

  • default: localhost
  • type: string
  • cmake directive: OIO_NS_REGION

ns.service_update_policy

TODO: to be documented

  • default: meta2=KEEP|3|1;sqlx=KEEP|1|1|;rdir=KEEP|1|1|
  • type: string
  • cmake directive: OIO_NS_SERVICE_UPDATE_POLICY

ns.storage_policy

TODO: to be documented

  • default: NONE
  • type: string
  • cmake directive: OIO_NS_STORAGE_POLICY

ns.worm

Is the NS in a WORM (for Write Once, Read Many --but never delete).

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_NS_WORM

proxy.bulk.max.create_many

In a proxy, sets how many containers can be created at once.

  • default: 100
  • type: guint
  • cmake directive: OIO_PROXY_BULK_MAX_CREATE_MANY
  • range: 0 -> 10000

proxy.bulk.max.delete_many

In a proxy, sets how many objects can be deleted at once.

  • default: 100
  • type: guint
  • cmake directive: OIO_PROXY_BULK_MAX_DELETE_MANY
  • range: 0 -> 10000

proxy.cache.enabled

In a proxy, sets if any form of caching is allowed. Supersedes the value of resolver.cache.enabled.

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_PROXY_CACHE_ENABLED

proxy.dir_shuffle

Should the proxy shuffle the meta1 addresses before contacting them, thus trying to perform a better fanout of the requests.

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_PROXY_DIR_SHUFFLE

proxy.force.master

In a proxy, should the process ask the target service (with the help of an option in each RPC) to accept the RPC only if it is MASTER on that DB.

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_PROXY_FORCE_MASTER

proxy.location

Specify the OpenIO SDS location of the service.

  • default: ****
  • type: string
  • cmake directive: OIO_PROXY_LOCATION

proxy.outgoing.timeout.common

In a proxy, sets the global timeout for all the other RPC issued (not conscience, not stats-related)

  • default: 30.0
  • type: gdouble
  • cmake directive: OIO_PROXY_OUTGOING_TIMEOUT_COMMON
  • range: 0.1 -> 60.0

proxy.outgoing.timeout.config

In a proxy, sets the global timeout for 'config' requests issued

  • default: 10.0
  • type: gdouble
  • cmake directive: OIO_PROXY_OUTGOING_TIMEOUT_CONFIG
  • range: 0.1 -> 60.0

proxy.outgoing.timeout.conscience

In a proxy, sets the global timeout for the RPC to the central cosnience service.

  • default: 10.0
  • type: gdouble
  • cmake directive: OIO_PROXY_OUTGOING_TIMEOUT_CONSCIENCE
  • range: 0.1 -> 60.0

proxy.outgoing.timeout.info

In a proxy, sets the global timeout for 'info' requests issued

  • default: 5.0
  • type: gdouble
  • cmake directive: OIO_PROXY_OUTGOING_TIMEOUT_INFO
  • range: 0.01 -> 60.0

proxy.outgoing.timeout.stat

In a proxy, sets the global timeout for 'stat' requests issued (mostly forwarded for the event-agent)

  • default: 10.0
  • type: gdouble
  • cmake directive: OIO_PROXY_OUTGOING_TIMEOUT_STAT
  • range: 0.1 -> 60.0

proxy.period.cs.downstream

In a proxy, sets the period between the refreshes of the load-balancing state from the central conscience.

  • default: 5
  • type: gint64
  • cmake directive: OIO_PROXY_PERIOD_CS_DOWNSTREAM
  • range: 0 -> 60

proxy.period.cs.upstream

In a proxy, sets the period between two sendings of services states to the conscience.

  • default: 1
  • type: gint64
  • cmake directive: OIO_PROXY_PERIOD_CS_UPSTREAM
  • range: 1 -> 60

proxy.period.refresh.csurl

In the proxy, tells the period between the reloadings of the conscience URL, known from the local configuration

  • default: 30
  • type: gint64
  • cmake directive: OIO_PROXY_PERIOD_REFRESH_CSURL
  • range: 0 -> 86400

proxy.period.refresh.srvtypes

In the proxy, tells the period between two refreshes of the known service types, from the conscience

  • default: 30
  • type: gint64
  • cmake directive: OIO_PROXY_PERIOD_REFRESH_SRVTYPES
  • range: 1 -> 86400

proxy.period.reload.nsinfo

In the proxy, tells the period between two refreshes of the namespace configuration, from the conscience

  • default: 30
  • type: gint64
  • cmake directive: OIO_PROXY_PERIOD_RELOAD_NSINFO
  • range: 1 -> 3600

proxy.prefer.master_for_read

In a proxy, upon a read request, should the proxy prefer a service known to host a MASTER copy of the DB. Supersedes proxy.prefer.slave_for_read

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_PROXY_PREFER_MASTER_FOR_READ

proxy.prefer.master_for_write

In a proxy, upon a write request, should the proxy prefer services known to host the MASTER copy of the DB

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_PROXY_PREFER_MASTER_FOR_WRITE

proxy.prefer.slave_for_read

In a proxy, upon a read request, should the proxy prefer a service known to host a SLAVE copy of the DB.

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_PROXY_PREFER_SLAVE_FOR_READ

proxy.quirk.local_scores

In a proxy, tells if the (ugly-as-hell) quirk that sets the score known from the conscience on the corresponding entries in the cache of services 'known to be local'

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_PROXY_QUIRK_LOCAL_SCORES

proxy.request.attempts

How many times to attempt requests to backend services. Notice that not all requests are retryable. Only requests identified as retryable will be retried (backend service restarting, bad redirection, etc.).

  • default: 3
  • type: gint
  • cmake directive: OIO_PROXY_REQUEST_ATTEMPTS
  • range: 1 -> 100

proxy.request.max_delay

How long a request might take to execute, when no specific deadline has been received. Used to compute a deadline transmitted to backend services, when no timeout is present in the request.

  • default: 1 * G_TIME_SPAN_MINUTE
  • type: gint64
  • cmake directive: OIO_PROXY_REQUEST_MAX_DELAY
  • range: 1 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_HOUR

proxy.request.retry_delay

How long to wait before retrying a request to a backend service. Notice that not all requests are retryable. This delay will be incremented at each attempt, and clamped to the request deadline.

  • default: 250 * G_TIME_SPAN_MILLISECOND
  • type: gint64
  • cmake directive: OIO_PROXY_REQUEST_RETRY_DELAY
  • range: 1 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_HOUR

proxy.srv_local.patch

Should the proxy patch the services descriptions to let the caller prefer local services.

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_PROXY_SRV_LOCAL_PATCH

proxy.srv_local.prepare

Should the proxy allocate services with a local preference. 0 for no, 1 for only one local service and 2 for a maximum of services in spite of the location constraints. The value 2 is a quirk that should be avoided unless upon exceptional condition wherein you accept the risk.

  • default: 0
  • type: gint
  • cmake directive: OIO_PROXY_SRV_LOCAL_PREPARE
  • range: 0 -> 2

proxy.srv_shuffle

Should the proxy shuffle the meta2 addresses before the query, to do a better load-balancing of the requests.

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_PROXY_SRV_SHUFFLE

proxy.ttl.services.down

In the proxy cache, sets the TTL of a service known to be down

  • default: 5 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_PROXY_TTL_SERVICES_DOWN
  • range: 0 -> 1 * G_TIME_SPAN_DAY

proxy.ttl.services.known

In a proxy, sets the TTL of each service already encountered

  • default: 5 * G_TIME_SPAN_DAY
  • type: gint64
  • cmake directive: OIO_PROXY_TTL_SERVICES_KNOWN
  • range: 0 -> 7 * G_TIME_SPAN_DAY

proxy.ttl.services.local

In the proxy cache, sets the TTL of a local service

  • default: 30 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_PROXY_TTL_SERVICES_LOCAL
  • range: 0 -> 1 * G_TIME_SPAN_DAY

proxy.ttl.services.master

In a proxy, sets the TTL on each 'known master' entry. That cache is filled each time a redirection to a MASTER occurs, so that we can immediately direct write operation to the service that owns the MASTER copy.

  • default: 30 * G_TIME_SPAN_MINUTE
  • type: gint64
  • cmake directive: OIO_PROXY_TTL_SERVICES_MASTER
  • range: 0 -> 7 * G_TIME_SPAN_DAY

proxy.url.path.maxlen

In a proxy, sets the maximum length for the URL it receives. This options protects stack allocation for that URL.

  • default: 2048
  • type: guint
  • cmake directive: OIO_PROXY_URL_PATH_MAXLEN
  • range: 32 -> 65536

rawx.events_allowed

Is the RAWX allowed to emit events in the beansatlkd?

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_RAWX_EVENTS_ALLOWED

rawx.slash_allowed

Is the RAWX allowed to run if its base directory is hosted in the root partition, a.k.a. '/'.

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_RAWX_SLASH_ALLOWED

rawx.tube.chunk_created

TODO: to be documented

  • default: oio
  • type: string
  • cmake directive: OIO_RAWX_TUBE_CHUNK_CREATED

rawx.tube.chunk_deleted

TODO: to be documented

  • default: oio
  • type: string
  • cmake directive: OIO_RAWX_TUBE_CHUNK_DELETED

rdir.fd_per_base

Configure the maximum number of file descriptors allowed to each leveldb database. Set to 0 to autodetermine the value (cf. rdir.fd_reserve). The real value will be clamped at least to 8. Will only be applied on bases opened after the configuration change.

  • default: 0
  • type: guint
  • cmake directive: OIO_RDIR_FD_PER_BASE
  • range: 0 -> 16384

rdir.fd_reserve

Configure the total number of file descriptors the leveldb backend may use. Set to 0 to autodetermine the value. Will only be applied on bases opened after the configuration change.

  • default: 0
  • type: guint
  • cmake directive: OIO_RDIR_FD_RESERVE
  • range: 0 -> 32768

rdir.leveldb.block_size

Configure the size of rdir Leveldb data blocks. See Leveldb documentation.

  • default: 4096
  • type: guint
  • cmake directive: OIO_RDIR_LEVELDB_BLOCK_SIZE
  • range: 1024 -> 1048576

rdir.leveldb.max_file_size

Configure the size of rdir Leveldb files. Leveldb will write up to this amount of bytes to a file before switching to a new one. See Leveldb documentation.

  • default: 2097152
  • type: guint
  • cmake directive: OIO_RDIR_LEVELDB_MAX_FILE_SIZE
  • range: 16384 -> 1073741824

resolver.cache.csm0.max.default

In any service resolver instantiated, sets the maximum number of entries related to meta0 (meta1 addresses) and conscience (meta0 address)

  • default: 4194304
  • type: guint
  • cmake directive: OIO_RESOLVER_CACHE_CSM0_MAX_DEFAULT
  • range: 0 -> G_MAXUINT

resolver.cache.csm0.ttl.default

In any service resolver instantiated, sets the default TTL on the entries related meta0 (meta1 addresses) and conscience (meta0 address)

  • default: 0
  • type: gint64
  • cmake directive: OIO_RESOLVER_CACHE_CSM0_TTL_DEFAULT
  • range: 0 -> G_MAXINT64

resolver.cache.enabled

Allows the resolver instances to cache entries

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_RESOLVER_CACHE_ENABLED

resolver.cache.root.max.default

In any shard resolver instantiated, sets the maximum number of root entries

  • default: 4096
  • type: guint
  • cmake directive: OIO_RESOLVER_CACHE_ROOT_MAX_DEFAULT
  • range: 0 -> G_MAXUINT

resolver.cache.root.ttl.default

In any shard resolver instantiated, sets the default TTL on the root entries

  • default: 0
  • type: gint64
  • cmake directive: OIO_RESOLVER_CACHE_ROOT_TTL_DEFAULT
  • range: 0 -> G_MAXINT64

resolver.cache.shards.max.default

In any shard resolver instantiated, sets the maximum number of shards entries per root

  • default: 16
  • type: guint
  • cmake directive: OIO_RESOLVER_CACHE_SHARDS_MAX_DEFAULT
  • range: 1 -> 131072

resolver.cache.srv.max.default

In any service resolver instantiated, sets the maximum number of meta1 entries (data-bound services)

  • default: 4194304
  • type: guint
  • cmake directive: OIO_RESOLVER_CACHE_SRV_MAX_DEFAULT
  • range: 0 -> G_MAXUINT

resolver.cache.srv.ttl.default

In any service resolver instantiated, sets the default TTL on the meta1 entries (data-bound services)

  • default: 0
  • type: gint64
  • cmake directive: OIO_RESOLVER_CACHE_SRV_TTL_DEFAULT
  • range: 0 -> G_MAXINT64

server.batch.accept

In the network core, when the server socket wakes the call to epoll_wait(), that value sets the number of subsequent calls to accept(). Setting it to a low value allows to quickly switch to other events (established connection) and can lead to a starvation on the new connections. Setting to a high value might spend too much time in accepting and ease denials of service (with established but idle cnx).

  • default: 64
  • type: guint
  • cmake directive: OIO_SERVER_BATCH_ACCEPT
  • range: 1 -> 4096

server.batch.events

In the network core of a server, how many events do you manage in each call to epoll_wait(). Set to a low value to quickly react on new connections, to an higher value to rather treat established connections. The value is bound to a stack-allocated buffer, keep it rather small.

  • default: 128
  • type: guint
  • cmake directive: OIO_SERVER_BATCH_EVENTS
  • range: 1 -> 4096

server.cnx.timeout.idle

In the current server, sets the maximum amount of time a connection may live without activity since the last activity (i.e. the last reply sent)

  • default: 5 * G_TIME_SPAN_MINUTE
  • type: gint64
  • cmake directive: OIO_SERVER_CNX_TIMEOUT_IDLE
  • range: 0 -> 1 * G_TIME_SPAN_DAY

server.cnx.timeout.never

In the current server, sets the maximum amount of time an established connection is allowed to live when it has no activity at all.

  • default: 30 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_SERVER_CNX_TIMEOUT_NEVER
  • range: 0 -> 1 * G_TIME_SPAN_DAY

server.cnx.timeout.persist

In the current server, sets the maximum amount of time a connection is allowed to live, since its creation by the accept() call, whether it presents activity or not.

  • default: 2 * G_TIME_SPAN_HOUR
  • type: gint64
  • cmake directive: OIO_SERVER_CNX_TIMEOUT_PERSIST
  • range: 0 -> 1 * G_TIME_SPAN_DAY

server.disable_noisy_access_logs

Enable by default, unnecessary access logs are ignored. Set to false to log every access

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_SERVER_DISABLE_NOISY_ACCESS_LOGS

server.fd_max_passive

Maximum number of simultaneous incoming connections. Set to 0 for an automatic detection (50% of available file descriptors).

  • default: 0
  • type: guint
  • cmake directive: OIO_SERVER_FD_MAX_PASSIVE
  • range: 0 -> 65536

server.log_outgoing

TODO: to be documented

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_SERVER_LOG_OUTGOING

server.malloc_trim_size.ondemand

Sets how many bytes bytes are released when the LEAN request is received by the current 'meta' service.

  • default: 0
  • type: guint
  • cmake directive: OIO_SERVER_MALLOC_TRIM_SIZE_ONDEMAND
  • range: 0 -> 2147483648

server.malloc_trim_size.periodic

Sets how many bytes bytes are released when the LEAN request is received by the current 'meta' service.

  • default: 0
  • type: guint
  • cmake directive: OIO_SERVER_MALLOC_TRIM_SIZE_PERIODIC
  • range: 0 -> 2147483648

server.perfdata.enabled

Enable server-side performance data collection.

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_SERVER_PERFDATA_ENABLED

server.periodic_decache.max_bases

How many bases may be decached each time the background task performs its Dance of Death

  • default: 1
  • type: guint
  • cmake directive: OIO_SERVER_PERIODIC_DECACHE_MAX_BASES
  • range: 1 -> 4194304

server.periodic_decache.max_delay

How long may the decache routine take

  • default: 500 * G_TIME_SPAN_MILLISECOND
  • type: gint64
  • cmake directive: OIO_SERVER_PERIODIC_DECACHE_MAX_DELAY
  • range: 1 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_MINUTE

server.periodic_decache.period

In ticks / jiffies, with approx. 1 tick per second. 0 means never

  • default: 0
  • type: guint
  • cmake directive: OIO_SERVER_PERIODIC_DECACHE_PERIOD
  • range: 0 -> 1048576

server.pool.max_idle

In the current server, sets how long a thread can remain unused before considered as idle (and thus to be stopped)

  • default: 30 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_SERVER_POOL_MAX_IDLE
  • range: 1 -> 1 * G_TIME_SPAN_HOUR

server.pool.max_tcp

In the current server, sets the maximum number of threads for the pool responsible for the TCP connections (threading model is one thread per request being managed, and one request at once per TCP connection). Set to 0 for no limit.

  • default: 0
  • type: gint
  • cmake directive: OIO_SERVER_POOL_MAX_TCP
  • range: 0 -> 1073741824

server.pool.max_udp

In the current server, sets the maximum number of threads for pool responsible for the UDP messages handling. UDP is only used for quick synchronisation messages during MASTER elections. Set ot 0 for no limit.

  • default: 4
  • type: gint
  • cmake directive: OIO_SERVER_POOL_MAX_UDP
  • range: 0 -> 1073741824

server.pool.max_unused

In the current server, sets how many threads may remain unused. This value is, in the GLib, common to all the threadpools.

  • default: 20
  • type: gint
  • cmake directive: OIO_SERVER_POOL_MAX_UNUSED
  • range: 0 -> 1073741824

server.queue.max_delay

Anti-DDoS counter-measure. In the current server, sets the maximum amount of time a queued TCP event may remain in the queue. If an event is polled and the thread sees the event stayed longer than that delay, the connection is immediately closed. Keep this value rather high because the connection closing doesn't involve a reply that will help the client to retry with an exponential back-off.

  • default: 60 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_SERVER_QUEUE_MAX_DELAY
  • range: 10 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_HOUR

server.queue.warn_delay

In the current server, set the time threshold after which a warning is sent when a file descriptor stays longer than that in the queue of the Thread Pool.

  • default: 4 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_SERVER_QUEUE_WARN_DELAY
  • range: 10 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_HOUR

server.request.max_memory

Maximum amount of memory used to decode ASN.1 requests. This MUST be more than server.request.max_size, or big requests will always be denied.

  • default: 4294967296
  • type: guint64
  • cmake directive: OIO_SERVER_REQUEST_MAX_MEMORY
  • range: 1048576 -> 68719476736

server.request.max_run_time

How long a request might take to run on the server side. This value is used to compute a deadline for several waitings (DB cache, manager of elections, etc). Common to all sqliterepo-based services, it might be overriden.

  • default: 300 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_SERVER_REQUEST_MAX_RUN_TIME
  • range: 1 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_HOUR

server.request.max_size

Maximum size of an ASN.1 request to a 'meta' service. A service will refuse to serve a request bigger than this. Be careful to have enough memory on the system.

  • default: 1073741824
  • type: guint
  • cmake directive: OIO_SERVER_REQUEST_MAX_SIZE
  • range: 1048576 -> 4294966272

server.statsd.host

Default statsd host address.

  • default: ****
  • type: string
  • cmake directive: OIO_SERVER_STATSD_HOST

server.statsd.port

Default statsd port.

  • default: 8125
  • type: guint
  • cmake directive: OIO_SERVER_STATSD_PORT
  • range: 0 -> 100000

server.task.malloc_trim.period

In jiffies, how often the periodic task that calls malloc_trim() is fired.

  • default: 3600
  • type: guint
  • cmake directive: OIO_SERVER_TASK_MALLOC_TRIM_PERIOD
  • range: 0 -> 86400

server.udp_queue.max

In the current server, sets the maximum length of the queue for UDP messages. When that number has been reached and a new message arrives, the message will be dropped.

  • default: 512
  • type: guint
  • cmake directive: OIO_SERVER_UDP_QUEUE_MAX
  • range: 0 -> 2147483648

server.udp_queue.ttl

In the current server, sets the maximum amount of time a queued UDP frame may remain in the queue. When unqueued, if the message was queued for too long, it will be dropped. The purpose of such a mechanism is to avoid clogging the queue and the whole election/cache mechanisms with old messages, those messages having already been resent.

  • default: 1 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_SERVER_UDP_QUEUE_TTL
  • range: 100 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_DAY

socket.fastopen.enabled

Should the socket to meta~ services use TCP_FASTOPEN flag.

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_SOCKET_FASTOPEN_ENABLED

socket.gridd.rcvbuf

Set to a non-zero value to explicitely force a RCVBUF option on client sockets to gridd services. Set to 0 to keep the OS default.

  • default: 0
  • type: guint
  • cmake directive: OIO_SOCKET_GRIDD_RCVBUF
  • range: 0 -> 16777216

socket.gridd.sndbuf

Set to a non-zero value to explicitely force a SNDBUF option on client sockets to gridd services. Set to 0 to keep the OS default.

  • default: 0
  • type: guint
  • cmake directive: OIO_SOCKET_GRIDD_SNDBUF
  • range: 0 -> 16777216

socket.linger.delay

When socket.linger.enabled is set to TRUE, socket.linger.delat tells how the socket remains in the TIME_WAIT state after the close() has been called.

  • default: 1
  • type: gint64
  • cmake directive: OIO_SOCKET_LINGER_DELAY
  • range: 0 -> 60

socket.linger.enabled

Set to TRUE to allow the LINGER behavior of TCP sockets, as a default. The connections then end with a normal FIN packet, and go in the TIME_WAIT state for a given delay. Setting to FALSE causes connections to be closed with a RST packet, then avoiding a lot of TCP sockets in the TIME_WAIT state.

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_SOCKET_LINGER_ENABLED

socket.nodelay.enabled

Should the socket to meta~ services receive the TCP_NODELAY flag. When TRUE, it disables the Naggle's algorithm.

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_SOCKET_NODELAY_ENABLED

socket.proxy.buflen

Advice the libcurl to use that buffer size for the interactions with the proxy. libcurl gives no guaranty to take the advice into account. Set to 0 to let the default. libcurl applies its own range, usually between 1k and 512k.

  • default: 0
  • type: guint
  • cmake directive: OIO_SOCKET_PROXY_BUFLEN
  • range: 0 -> 512000

socket.quickack.enabled

Should the sockets opened by the application receive the TCP_QUICKACK flag.

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_SOCKET_QUICKACK_ENABLED

socket.rawx.buflen

Advice the libcurl to use that buffer size for the interactions with the rawx services. libcurl gives no guaranty to take the advice into account. Set to 0 to let the default. libcurl applies its own range, usually between 1k and 512k.

  • default: 0
  • type: guint
  • cmake directive: OIO_SOCKET_RAWX_BUFLEN
  • range: 0 -> 512000

sqliterepo.cache.heat_threshold

Sets the heat value over which a database is considered hot

  • default: 1
  • type: guint32
  • cmake directive: OIO_SQLITEREPO_CACHE_HEAT_THRESHOLD
  • range: 1 -> 2147483648

sqliterepo.cache.heavyload.alert

Triggers an alert when a thread tries to wait for an overloaded database.

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_SQLITEREPO_CACHE_HEAVYLOAD_ALERT

sqliterepo.cache.heavyload.fail

Triggers an error when a thread waits for an overloaded database.

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_SQLITEREPO_CACHE_HEAVYLOAD_FAIL

sqliterepo.cache.heavyload.min_load

Minimum number of requests per second opening the database to consider the database overloaded.

  • default: 64
  • type: guint32
  • cmake directive: OIO_SQLITEREPO_CACHE_HEAVYLOAD_MIN_LOAD
  • range: 1 -> 10000

sqliterepo.cache.kbytes_per_db

Number of kibibytes (kiB) of cache per open DB.

  • default: 0
  • type: guint
  • cmake directive: OIO_SQLITEREPO_CACHE_KBYTES_PER_DB
  • range: 0 -> 1048576

sqliterepo.cache.timeout.lock

Sets how long we (unit)wait on the lock around the databases. Keep it small.

  • default: 1 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_CACHE_TIMEOUT_LOCK
  • range: 1 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_HOUR

sqliterepo.cache.timeout.open

Sets how long a worker thread accepts for a DB to become available.

  • default: 20 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_CACHE_TIMEOUT_OPEN
  • range: 1 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_MINUTE

sqliterepo.cache.ttl.cool

Sets the period after the return to the IDLE/COLD state, during which the recycling is forbidden. 0 means the base won't be decached.

  • default: 1 * G_TIME_SPAN_MILLISECOND
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_CACHE_TTL_COOL
  • range: 0 -> 1 * G_TIME_SPAN_DAY

sqliterepo.cache.ttl.hot

Sets the period after the return to the IDLE/HOT state, during which the recycling is forbidden. 0 means the base won't be decached.

  • default: 1 * G_TIME_SPAN_MILLISECOND
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_CACHE_TTL_HOT
  • range: 0 -> 1 * G_TIME_SPAN_DAY

sqliterepo.client.timeout.alert_if_longer

In the current sqliterepo repository, sets the maximum amount of time a periodical task may take, while checking for the timeouts on the outbound connections.

  • default: 5 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_CLIENT_TIMEOUT_ALERT_IF_LONGER
  • range: 1 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_HOUR

sqliterepo.dump.check_type

How to check the database before executing a DB_DUMP request. 0: no check. 1: quick_check (the default). 2: integrity_check.

  • default: 1
  • type: gint
  • cmake directive: OIO_SQLITEREPO_DUMP_CHECK_TYPE
  • range: 0 -> 2

sqliterepo.dump.chunk_size

Size of data chunks when copying a database using the chunked DB_PIPEFROM/DB_DUMP mechanism. Also used as block size for internal database copies.

  • default: 8388608
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_DUMP_CHUNK_SIZE
  • range: 4096 -> 2146435072

sqliterepo.dump.max_size

Maximum size of a database dump. If a base is bigger than this size, it will be refused the synchronous DB_RESTORE mechanism, and will be ansynchronously restored with the DB_DUMP/DB_PIPEFROM mechanism. This value will be clamped to server.request.max_size - 1024.

  • default: 1072693248
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_DUMP_MAX_SIZE
  • range: 0 -> 4293918720

sqliterepo.dumps.max

How many concurrent DB dumps may happen in a single process.

  • default: 1024
  • type: gint
  • cmake directive: OIO_SQLITEREPO_DUMPS_MAX
  • range: 1 -> G_MAXINT

sqliterepo.dumps.timeout

How long to wait for a concurrent DB dump to finish. Should be set accordingly with sqliterepo.outgoing.timeout.req.resync.

  • default: 4 * G_TIME_SPAN_MINUTE
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_DUMPS_TIMEOUT
  • range: 1 * G_TIME_SPAN_SECOND -> 1 * G_TIME_SPAN_DAY

sqliterepo.election.alert.node_watch_delay

Send an alert if the 'node watch' ZK callback takes longer than this. When it takes too long, slave services may redirect to a non-working service.

  • default: 100 * G_TIME_SPAN_MILLISECOND
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_ELECTION_ALERT_NODE_WATCH_DELAY
  • range: 1 -> 60 * G_TIME_SPAN_SECOND

sqliterepo.election.allow_master

Allow the role of MASTER in any election.

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_SQLITEREPO_ELECTION_ALLOW_MASTER

sqliterepo.election.delay.expire_master

In the current sqliterepo repository, sets the amount of time after which a MASTER election will drop its status and return to the NONE status. This helps recycling established-but-unused elections, and save Zookeeper nodes. Keep this value greater than sqliterepo.election.delay.expire_slave to avoid rotating the master service.

  • default: 240 * G_TIME_SPAN_MINUTE
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_ELECTION_DELAY_EXPIRE_MASTER
  • range: 1 * G_TIME_SPAN_MILLISECOND -> 7 * G_TIME_SPAN_DAY

sqliterepo.election.delay.expire_none

In the current sqliterepo repository, sets the amount of time an election without status will be forgotten

  • default: 30 * G_TIME_SPAN_MINUTE
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_ELECTION_DELAY_EXPIRE_NONE
  • range: 1 * G_TIME_SPAN_SECOND -> 1 * G_TIME_SPAN_DAY

sqliterepo.election.delay.expire_pending

Sets the amount of time after which a pending election (without any status change) will be reset and return to the NONE status. This helps recovering after a ZooKeeper failure. Should be set between sqliterepo.zk.timeout and sqliterepo.election.wait.delay.

  • default: 12 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_ELECTION_DELAY_EXPIRE_PENDING
  • range: 1 * G_TIME_SPAN_SECOND -> 7 * G_TIME_SPAN_DAY

sqliterepo.election.delay.expire_slave

In the current sqliterepo repository, sets the amount of time after which a SLAVE election will drop its status and return to the NONE status. This helps recycling established-but-unused elections, and save Zookeeper nodes.

  • default: 210 * G_TIME_SPAN_MINUTE
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_ELECTION_DELAY_EXPIRE_SLAVE
  • range: 1 * G_TIME_SPAN_SECOND -> 7 * G_TIME_SPAN_DAY

sqliterepo.election.delay.retry_failed

In the current sqliterepo repository, sets the amount of time after which a failed election leaves its FAILED status and returns to the NONE status.

  • default: 250 * G_TIME_SPAN_MILLISECOND
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_ELECTION_DELAY_RETRY_FAILED
  • range: 1 * G_TIME_SPAN_MILLISECOND -> 7 * G_TIME_SPAN_DAY

sqliterepo.election.lazy_recover

Should the election mecanism try to recreate missing DB?

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_SQLITEREPO_ELECTION_LAZY_RECOVER

sqliterepo.election.lock_alert_delay

Only effective when built in DEBUG mode. Dump the long critical sections around the elections lock, when the lock is held for longer than this threshold (in microseconds).

  • default: 500
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_ELECTION_LOCK_ALERT_DELAY
  • range: 1 -> 60 * G_TIME_SPAN_SECOND

sqliterepo.election.nowait.after

In the current sqliterepo repository, sets the amount of time spent in an election resolution that will make a worker thread won't wait at all and consider that election is stalled.

  • default: 15 * G_TIME_SPAN_MINUTE
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_ELECTION_NOWAIT_AFTER
  • range: 1 * G_TIME_SPAN_MILLISECOND -> G_MAXINT64

sqliterepo.election.nowait.enable

Check of the election is pending since too long. If it is, don't way for it.

  • default: FALSE
  • type: gboolean
  • cmake directive: OIO_SQLITEREPO_ELECTION_NOWAIT_ENABLE

sqliterepo.election.wait.delay

In the current sqliterepo repository, sets the maximum amount of time a worker thread is allowed to wait for an election to get its final status.

  • default: 20 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_ELECTION_WAIT_DELAY
  • range: 100 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_HOUR

sqliterepo.election.wait.quantum

In the current sqliterepo repository, while loop-waiting for a final election status to be reached, this value sets the unit amount of time of eacch unit wait on the lock. Keep this value rather small to avoid waiting for too long, but not too small to avoid dumping CPU cycles in active waiting.

  • default: 4 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_ELECTION_WAIT_QUANTUM
  • range: 100 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_HOUR

sqliterepo.journal_mode

Set the 'journal_mode' sqlite pragma when opening a database. 0 = DELETE, 1 = TRUNCATE, 2 = PERSIST, 3 = MEMORY.

  • default: 3
  • type: guint
  • cmake directive: OIO_SQLITEREPO_JOURNAL_MODE
  • range: 0 -> 3

sqliterepo.outgoing.timeout.cnx.getvers

Sets the connection timeout when exchanging versions between databases replicas.

  • default: 5.0
  • type: gdouble
  • cmake directive: OIO_SQLITEREPO_OUTGOING_TIMEOUT_CNX_GETVERS
  • range: 0.01 -> 30.0

sqliterepo.outgoing.timeout.cnx.replicate

Sets the connection timeout sending a replication request.

  • default: 5.0
  • type: gdouble
  • cmake directive: OIO_SQLITEREPO_OUTGOING_TIMEOUT_CNX_REPLICATE
  • range: 0.01 -> 30.0

sqliterepo.outgoing.timeout.cnx.resync

Set the connection timeout during RPC to ask for a SLAVE database to be resync on its MASTER

  • default: 5.0
  • type: gdouble
  • cmake directive: OIO_SQLITEREPO_OUTGOING_TIMEOUT_CNX_RESYNC
  • range: 0.01 -> 30.0

sqliterepo.outgoing.timeout.cnx.use

Sets the connection timeout when pinging a peer database. Keep it small. Only used when UDP is disabled.

  • default: 1.0
  • type: gdouble
  • cmake directive: OIO_SQLITEREPO_OUTGOING_TIMEOUT_CNX_USE
  • range: 0.01 -> 30.0

sqliterepo.outgoing.timeout.req.getvers

Sets the global timeout when performing a version exchange RPC. Keep it rather small, to let election quickly fail on network troubles. Only used when UDP is disabled.

  • default: 10.0
  • type: gdouble
  • cmake directive: OIO_SQLITEREPO_OUTGOING_TIMEOUT_REQ_GETVERS
  • range: 0.01 -> 30.0

sqliterepo.outgoing.timeout.req.replicate

Sets the global timeout when sending a replication RPC, from the current MASTER to a SLAVE

  • default: 10.0
  • type: gdouble
  • cmake directive: OIO_SQLITEREPO_OUTGOING_TIMEOUT_REQ_REPLICATE
  • range: 0.01 -> 30.0

sqliterepo.outgoing.timeout.req.resync

Sets the global timeout of a RESYNC request sent to a 'meta' service. Sent to a SLAVE DB, the RESYNC operation involves a RPC from the SLAVE to the MASTER, then a DB dump on the MASTER and restoration on the SLAVE. Thus that operation might be rather long, due to the possibility of network/disk latency/bandwidth, etc. Should be set accordingly with sqliterepo.dumps.timeout

  • default: 241.0
  • type: gdouble
  • cmake directive: OIO_SQLITEREPO_OUTGOING_TIMEOUT_REQ_RESYNC
  • range: 0.01 -> 300.0

sqliterepo.outgoing.timeout.req.use

Sets the global timeout when pinging a peer database. Keep it small.

  • default: 10.0
  • type: gdouble
  • cmake directive: OIO_SQLITEREPO_OUTGOING_TIMEOUT_REQ_USE
  • range: 0.01 -> 30.0

sqliterepo.page_size

In the current sqliterepo repository, sets the page size of all the databases used. This value only has effects on databases created with that value.

  • default: 4096
  • type: guint
  • cmake directive: OIO_SQLITEREPO_PAGE_SIZE
  • range: 512 -> 1048576

sqliterepo.release_size

Sets how many bytes bytes are released when the LEAN request is received by the current 'meta' service.

  • default: 67108864
  • type: guint
  • cmake directive: OIO_SQLITEREPO_RELEASE_SIZE
  • range: 1 -> 2147483648

sqliterepo.repo.active_queue_ttl

In the current server, sets the maximum amount of time a queued DB_USE, DB_GETVERS or DB_PIPEFROM request may remain in the queue. If the message was queued for too long before being sent, it will be dropped. The purpose of such a mechanism is to avoid clogging the queue and the whole election/cache mechanisms with old messages, those messages having already been resent.

  • default: 4 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_REPO_ACTIVE_QUEUE_TTL
  • range: 100 * G_TIME_SPAN_MILLISECOND -> 60 * G_TIME_SPAN_SECOND

sqliterepo.repo.fd_max_active

Maximum number of simultaneous outgoing connections. Set to 0 for an automatic detection (2% of available file descriptors).

  • default: 512
  • type: guint
  • cmake directive: OIO_SQLITEREPO_REPO_FD_MAX_ACTIVE
  • range: 0 -> 65536

sqliterepo.repo.fd_min_active

Minimum number of simultaneous outgoing connections.

  • default: 32
  • type: guint
  • cmake directive: OIO_SQLITEREPO_REPO_FD_MIN_ACTIVE
  • range: 0 -> 65536

sqliterepo.repo.getvers_attempts

Sets how many versions exchanges are allowed during the journey in the election FSM.

  • default: 5
  • type: guint
  • cmake directive: OIO_SQLITEREPO_REPO_GETVERS_ATTEMPTS
  • range: 1 -> 64

sqliterepo.repo.getvers_delay

.

  • default: 100 * G_TIME_SPAN_MILLISECOND
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_REPO_GETVERS_DELAY
  • range: 10 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_MINUTE

sqliterepo.repo.hard_max

Sets how many databases can be kept simultaneously open (in use or idle) in the current service. If defined to 0, it is set to 48% of available file descriptors.

  • default: 0
  • type: guint
  • cmake directive: OIO_SQLITEREPO_REPO_HARD_MAX
  • range: 0 -> 131072

sqliterepo.repo.soft_max

Sets how many databases can be in use at the same moment in the current service. If defined to 0, it is set to sqliterepo.repo.hard_max.

  • default: 0
  • type: guint
  • cmake directive: OIO_SQLITEREPO_REPO_SOFT_MAX
  • range: 0 -> 131072

sqliterepo.rss.max

Memory size ceiling we try to honor. The check is performed while closing databases. Set to -1 to autodetect the max RSS from the resource limits (see man getrlimit for more information) or 0 to disable. The autodetection considers the environment and is not aware of all the processes that could share that environment.

  • default: -1
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_RSS_MAX
  • range: -1 -> G_MAXINT64

sqliterepo.service.exit_ttl

.

  • default: 10 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_SERVICE_EXIT_TTL
  • range: 1 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_HOUR

sqliterepo.udp_deferred

Should the sendto() of DB_USE be deferred to a thread-pool. Only effective when oio_udp_allowed is set. Set to 0 to keep the OS default.

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_SQLITEREPO_UDP_DEFERRED

sqliterepo.zk.mux_factor

For testing purposes. The value simulates ZK sharding on different connection to the same cluster.

  • default: 1
  • type: guint
  • cmake directive: OIO_SQLITEREPO_ZK_MUX_FACTOR
  • range: 1 -> 64

sqliterepo.zk.rrd.threshold

Sets the maximum number of reconnections to the ZK that remains acceptable. Beyond that limit, we consider the current service has been disconnected, and that it lost all its nodes.

  • default: 5
  • type: guint
  • cmake directive: OIO_SQLITEREPO_ZK_RRD_THRESHOLD
  • range: 1 -> 2147483648

sqliterepo.zk.rrd.window

Sets the time window to remember the reconnection events, on a ZK connection.

  • default: 30
  • type: guint
  • cmake directive: OIO_SQLITEREPO_ZK_RRD_WINDOW
  • range: 1 -> 4095

sqliterepo.zk.shuffle

Should the synchronism mechanism shuffle the set of URL in the ZK connection string? Set to yes as an attempt to a better balancing of the connections to the nodes of the ZK cluster.

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_SQLITEREPO_ZK_SHUFFLE

sqliterepo.zk.timeout

Sets the timeout of the zookeeper handle (in the meaning of the zookeeper client library)

  • default: 10 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_SQLITEREPO_ZK_TIMEOUT
  • range: 1 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_HOUR

sqlx.lb.refresh_period

In the current sqlx-based service, tells the period (in seconds) at which the service will refresh its load-balancing information.

  • default: 1
  • type: gint64
  • cmake directive: OIO_SQLX_LB_REFRESH_PERIOD
  • range: 1 -> 60

sqlx.outgoing.timeout.req

Sets the timeout for the requests issued to the SQLX services.

  • default: 30.0
  • type: gdouble
  • cmake directive: OIO_SQLX_OUTGOING_TIMEOUT_REQ
  • range: 0.01 -> 60.0

udp_allowed

Allow the sqlx client DB_USE RPC to be sent via UDP instead of the default TCP channel.

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_UDP_ALLOWED

volume.lazy_lock

Allow the services to self-assign to the volume they find in their configuration. This was the default behaviour in pre 5.2 versions of oio-sds.

  • default: TRUE
  • type: gboolean
  • cmake directive: OIO_VOLUME_LAZY_LOCK

Variables only for testing purposes

These variables are only active when the ENBUG option has been specified on the cmake command line.

enbug.client.fake_timeout.threshold

Set the probability of fake timeout failures, in any client RPC to a 'meta' service

  • default: 0
  • type: gint32
  • cmake directive: OIO_ENBUG_CLIENT_FAKE_TIMEOUT_THRESHOLD
  • range: 0 -> 100

enbug.cs.list.delay

In testing situations, sets a delay to add to any service listing request.

  • default: 0
  • type: gint64
  • cmake directive: OIO_ENBUG_CS_LIST_DELAY
  • range: 0 -> 60 * G_TIME_SPAN_MINUTE

enbug.cs.serialize.delay

In testing situations, sets a delay to add to service pre-serialize operations.

  • default: 0
  • type: gint64
  • cmake directive: OIO_ENBUG_CS_SERIALIZE_DELAY
  • range: 0 -> 60 * G_TIME_SPAN_MINUTE

enbug.election.double_master.db

CID of the base to force a double master condition on.

  • default: ****
  • type: string
  • cmake directive: OIO_ENBUG_ELECTION_DOUBLE_MASTER_DB

enbug.proxy.cs.failure_rate

Proxy probability to fail with 503 on a /cs route

  • default: 0
  • type: gint32
  • cmake directive: OIO_ENBUG_PROXY_CS_FAILURE_RATE
  • range: 0 -> 100

enbug.proxy.request_failure.alone

Really, do not use this!

  • default: 0
  • type: gint32
  • cmake directive: OIO_ENBUG_PROXY_REQUEST_FAILURE_ALONE
  • range: 0 -> 100

enbug.proxy.request_failure.first

Really, do not use this!

  • default: 0
  • type: gint32
  • cmake directive: OIO_ENBUG_PROXY_REQUEST_FAILURE_FIRST
  • range: 0 -> 100

enbug.proxy.request_failure.last

Really, do not use this!

  • default: 0
  • type: gint32
  • cmake directive: OIO_ENBUG_PROXY_REQUEST_FAILURE_LAST
  • range: 0 -> 100

enbug.proxy.request_failure.middle

Really, do not use this!

  • default: 0
  • type: gint32
  • cmake directive: OIO_ENBUG_PROXY_REQUEST_FAILURE_MIDDLE
  • range: 0 -> 100

enbug.server.request.failure.threshold

In testing situations, sets the average ratio of requests failing for a fake reason (from the peer). This helps testing the retrial mechanisms.

  • default: 0
  • type: gint32
  • cmake directive: OIO_ENBUG_SERVER_REQUEST_FAILURE_THRESHOLD
  • range: 0 -> 100

enbug.sqliterepo.client.failure.threshold

In testing situations, sets the average ratio of requests failing for a fake reason (from the peer). This helps testing the retrial mechanisms.

  • default: 0
  • type: gint32
  • cmake directive: OIO_ENBUG_SQLITEREPO_CLIENT_FAILURE_THRESHOLD
  • range: 0 -> 100

enbug.sqliterepo.client.timeout.period

In testing situations, sets the average ratio of requests failing for a fake reason (connection timeout). This helps testing the retrial mechanisms and the behavior under strong network split-brain.

  • default: 1 * G_TIME_SPAN_SECOND
  • type: gint64
  • cmake directive: OIO_ENBUG_SQLITEREPO_CLIENT_TIMEOUT_PERIOD
  • range: 1 * G_TIME_SPAN_MILLISECOND -> 1 * G_TIME_SPAN_DAY

enbug.sqliterepo.synchro.failure

Fake Error rate on synchronism RPC (a.k.a. ZK)

  • default: 0
  • type: gint32
  • cmake directive: OIO_ENBUG_SQLITEREPO_SYNCHRO_FAILURE
  • range: 0 -> 100