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v2v: Add more detailed documentation for input methods.

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Richard W.M. Jones
2018-07-29 10:33:01 +01:00
parent f9898e12ab
commit eb66dafe2e
1 changed files with 30 additions and 1 deletions
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v2v/types.mli
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@@ -363,7 +363,36 @@ type output_allocation = Sparse | Preallocated
(** {2 Input object}
This is subclassed for the various input [-i] options. *)
This is subclassed for the various input [-i] options.
The order of steps is:
{v
command line parsing Input object of right subclass is
│ created depending on ‘-i’ option.
│
▼
input#precheck Called very early on, do pre-checks here.
│
│
▼
input#source Open the source hypervisor connection,
│ read metadata, and fill out and return
│ the ‘Types.source’ structure.
▼
conversion Guest is converted into a local overlay.
│
│
▼
input#adjust_overlay_parameters Optional method for adjusting
│ QEMU overlay parameters ready for copying
│ (eg. using a larger readahead setting).
▼
copying Guest data is copied to the target disks
by running ‘qemu-img convert’.
v}
*)
class virtual input : object
method precheck : unit -> unit