[Libguestfs] [PATCH v3 3/7] resize: add function find_partitions

[Richard W.M. Jones]

On Mon, Sep 22, 2014 at 03:47:36PM +0800, Hu Tao wrote:
> find_partitions can find partitions of given type.
> 
> Signed-off-by: Hu Tao <hutao at cn.fujitsu.com>
> ---
>  resize/resize.ml | 21 ++++++++++++---------
>  1 file changed, 12 insertions(+), 9 deletions(-)
> 
> diff --git a/resize/resize.ml b/resize/resize.ml
> index 8f2105c..cfd02fc 100644
> --- a/resize/resize.ml
> +++ b/resize/resize.ml
> @@ -446,14 +446,15 @@ read the man page virt-resize(1).
>      | MBR_ID _ | GPT_Type _ | No_ID -> false
>    in
>  
> -  let partitions : partition list =
> +  let find_partitions part_type =
>      let parts = Array.to_list (g#part_list "/dev/sda") in
>  
> -    if List.length parts = 0 then
> -      error (f_"the source disk has no partitions");
> -
>      (* Filter out logical partitions.  See note above. *)
>      let parts =
> +      match part_type with
> +      (* for GPT, all partitions are regarded as Primary Partition,
> +       * e.g. there is no Extended Partition or Logical Partition. *)
> +      | PrimaryPartition ->
>          List.filter (fun p -> parttype <> MBR || p.G.part_num <= 4_l)
>          parts in
>  
> @@ -485,11 +486,6 @@ read the man page virt-resize(1).
>              p_target_start = 0L; p_target_end = 0L }
>        ) parts in
>  
> -    if verbose then (
> -      eprintf "%d partitions found\n" (List.length partitions);
> -      List.iter debug_partition partitions
> -    );
> -
>      (* Check content isn't larger than partitions.  If it is then
>       * something has gone wrong and we shouldn't continue.  Old
>       * virt-resize didn't do these checks.
> @@ -521,6 +517,13 @@ read the man page virt-resize(1).
>  
>      partitions in
>  
> +  let partitions = find_partitions PrimaryPartition in
> +
> +  if verbose then (
> +    eprintf "%d partitions found\n" (List.length partitions);
> +    List.iter debug_partition partitions
> +    );
> +
>    (* Build a data structure describing LVs on the source disk. *)
>    let lvs =
>      let lvs = Array.to_list (g#lvs ()) in

Let's combine patches 01 and 03 into a single patch.

Otherwise, this looks fine to me.

Rich.

-- 
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