ravel::DiskFaultSpec Struct Reference

Injectable disk behavior. More...

#include <disk.hpp>

Public Attributes
std::uint64_t	capacity_bytes = 1ULL << 30
	Total bytes across all files.
VirtualClock::Tick	latency_min = 0
	Each operation takes a uniformly random time in [min, max].
VirtualClock::Tick	latency_max = 0
	The upper end of the range above.
double	write_error_probability = 0.0
	In [0, 1]. Writes, renames and removes fail with IoError, changing nothing.
double	sync_error_probability = 0.0
	In [0, 1].

Detailed Description

Injectable disk behavior.

Every decision is drawn from the Simulation's VirtualRng, so it replays identically for a given seed.

Member Data Documentation

capacity_bytes

std::uint64_t ravel::DiskFaultSpec::capacity_bytes = 1ULL << 30

Total bytes across all files.

The default (1 GiB) only guards against a stray offset asking for absurd amounts of memory.

sync_error_probability

double ravel::DiskFaultSpec::sync_error_probability = 0.0

In [0, 1].

Syncing a file fails with IoError and drops the data it should have flushed; syncing a directory fails with IoError and changes nothing.

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The documentation for this struct was generated from the following file:

• include/ravel/disk.hpp