package qcow

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type t

Qcow metadata: clusters containing references and clusters containing reference counts.

type error = [
  1. | Mirage_block.error
  2. | `Msg of string
]
type write_error = [
  1. | Mirage_block.write_error
  2. | `Msg of string
]
val make : cache:Qcow_cache.t -> cluster_bits:int -> locks:Qcow_locks.t -> unit -> t

Construct a qcow metadata structure given a set of cluster read/write/flush operations

val set_cluster_map : t -> Qcow_cluster_map.t -> unit

Set the associated cluster map (which will be updated on every cluster write)

type contents
module Refcounts : sig ... end
module Physical : sig ... end
val erase : contents -> unit

Set the cluster contents to zeroes

Read the contents of the given cluster and provide them to the given function

Read the contents of the given cluster, transform them through the given function and write the results back to disk

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