Notice

This document is for a development version of Ceph.

Journaler

journaler_write_head_interval

Interval in seconds between journal header updates (to help bound replay time)

type

int

default

15

journaler_prefetch_periods

Number of striping periods to prefetch while reading MDS journal

type

uint

default

10

min

2

journaler_prezero_periods

Number of striping periods to zero head of MDS journal write position

type

uint

default

5

min

2