Notice

This document is for a development version of Ceph.

Messaging

General Settings

ms_tcp_nodelay

Description

Disables Nagle’s algorithm on messenger TCP sessions.

Type

Boolean

Required

No

Default

true

ms_initial_backoff

Description

The initial time to wait before reconnecting on a fault.

Type

Double

Required

No

Default

.2

ms_max_backoff

Description

The maximum time to wait before reconnecting on a fault.

Type

Double

Required

No

Default

15.0

ms_die_on_bad_msg

Description

Debug option; do not configure.

Type

Boolean

Required

No

Default

false

ms_dispatch_throttle_bytes

Description

Throttles total size of messages waiting to be dispatched.

Type

64-bit Unsigned Integer

Required

No

Default

100 << 20

ms_bind_ipv6

Description

Enable to bind daemons to IPv6 addresses instead of IPv4. Not required if you specify a daemon or cluster IP.

Type

Boolean

Required

No

Default

false

ms_inject_socket_failures

Description

Debug option; do not configure.

Type

64-bit Unsigned Integer

Required

No

Default

0

Async messenger options

ms_async_transport_type

Description

Transport type used by Async Messenger. Can be posix, dpdk or rdma. Posix uses standard TCP/IP networking and is default. Other transports may be experimental and support may be limited.

Type

String

Required

No

Default

posix

ms_async_op_threads

Description

Initial number of worker threads used by each Async Messenger instance. Should be at least equal to highest number of replicas, but you can decrease it if you are low on CPU core count and/or you host a lot of OSDs on single server.

Type

64-bit Unsigned Integer

Required

No

Default

3