Man page - cache_metadata_size(8)

Packages contains this manual

Package:  thin-provisioning-tools
apt-get install thin-provisioning-tools

Manuals in package:
• thin_repair(8)
• cache_restore(8)
• cache_repair(8)
• thin_metadata_pack(8)
• thin_restore(8)
• era_check(8)
• thin_check(8)
• thin_metadata_unpack(8)
• thin_metadata_size(8)
• era_restore(8)
• thin_rmap(8)
• thin_ls(8)
• era_invalidate(8)
• thin_migrate(8)
• thin_dump(8)
• cache_metadata_size(8)
• cache_check(8)
• cache_dump(8)
• era_dump(8)
• thin_trim(8)
• thin_delta(8)
• cache_writeback(8)
Documentations in package:
• thin-provisioning-tools

Manual

cache_metadata_size

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLE
SEE ALSO
AUTHOR

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NAME

cache_metadata_size - Estimate the size of the metadata device needed for a given configuration.

SYNOPSIS

cache_metadata_size [ options ]

DESCRIPTION

cache_metadata_size estimates the size of the metadata. Either --nr-blocks , or --block-size and --device-size must be specified.

OPTIONS

--nr-blocks {natural}

Specify the number of cache blocks.

--block-size {sectors}

Specify the size of each cache block in 512 byte sectors.

--device-size {sectors}

Specify total size of the fast device used in the cache. In 512 byte sectors.

--max-hint-width {nr bytes}

Specify hint width.

Cache policies use a per block ’hint’ to record extra info (for instance
hit counts). At the moment all policies use a 4 byte hint
width. If you want to use a different hint width specify it with this
switch.

EXAMPLE

$ cache_metadata_size --nr-blocks 10240

$ cache_metadata_size --block-size 128 --device-size 1024000

SEE ALSO

cache_dump (8), cache_repair (8), cache_restore (8)

AUTHOR

Joe Thornber <ejt@redhat.com>, Heinz Mauelshagen <heinzm@redhat.com>

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