package qcow

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in-package search v0.2.0

Package contains no libraries

type t

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

type error = [

| Mirage_block.error
| `Msg of string

]

type write_error = [

| Mirage_block.write_error
| `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

val read_and_lock : 
  ?client:Qcow_locks.Client.t ->
  t ->
  Qcow_types.Cluster.t ->
  (contents * Qcow_locks.lock, error) Pervasives.result Lwt.t

val read : 
  ?client:Qcow_locks.Client.t ->
  t ->
  Qcow_types.Cluster.t ->
  (contents -> ('a, error) Pervasives.result Lwt.t) ->
  ('a, error) Pervasives.result Lwt.t

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

val update : 
  ?client:Qcow_locks.Client.t ->
  t ->
  Qcow_types.Cluster.t ->
  (contents -> ('a, write_error) Pervasives.result Lwt.t) ->
  ('a, write_error) Pervasives.result Lwt.t

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