Cache Tool

Internals

type Megabytes

A Scalar type with a scale of 2~20~.

type CacheStripeBlocks

A Scalar type with a scale of 2~27~. This represents the units in which storage is allocated to stripes.

class VolumeConfig

A container for parsed cache volume configuration.

• class Data

  Configuration information for a single cache volume.

  • int _idx

    The volume index, 0 if not specified in the configuration.

  • int _percent

    Volume size if specified as a percentage, otherwise 0 if not specified.

  • Megabytes _size

    Volume size if specified as an explicit size, otherwise 0 if not specified.

  • CacheStripeBlocks _alloc

    Already allocated size, used during allocation computations.

class VolumeAllocator

This class provides handling for allocating storage space to stripes based on volume configuration.

• class V

  Cache volume data for a single cache volume.

  • VolumeConfig::Data const &_config

    A reference to the (parsed) volume configuration for a single volume to be used for allocating storage to that cache volume.

• std::vector<V> _av

  Cache volume data for all the volumes in the configuration.

• VolumeConfig _vols

  The parsed cache volume configuration.