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Richard W.M. Jones

2014-Nov-24 16:01 UTC

[Libguestfs] [PATCH] v2v: -i ova: Remove incorrect warning for disks that have no parent controller (RHBZ#1167302).

Don't assume every disk <Item> has a <Parent> field.  For floppy
disks
this is not the case.

Thanks: Junqin Zhou
---
 v2v/input_ova.ml | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/v2v/input_ova.ml b/v2v/input_ova.ml
index 95af2e5..9a9c10a 100644
--- a/v2v/input_ova.ml
+++ b/v2v/input_ova.ml
@@ -187,14 +187,17 @@ object
       for i = 0 to nr_nodes-1 do
         let n = Xml.xpathobj_node doc obj i in
         Xml.xpathctx_set_current_context xpathctx n;
-        let parent_id = xpath_to_int "rasd:Parent/text()" 0 in
 
         (* XXX We assume the OVF lists these in order.
         let address = xpath_to_int "rasd:AddressOnParent/text()" 0 in
         *)
 
         (* Find the parent controller. *)
-        let controller = parent_controller parent_id in
+        let parent_id = xpath_to_int "rasd:Parent/text()" 0 in
+        let controller +          match parent_id with
+          | 0 -> None
+          | id -> parent_controller id in
 
         Xml.xpathctx_set_current_context xpathctx n;
         let file_id = xpath_to_string "rasd:HostResource/text()"
"" in
@@ -255,14 +258,17 @@ object
         Xml.xpathctx_set_current_context xpathctx n;
         let id = xpath_to_int "rasd:ResourceType/text()" 0 in
         assert (id = 14 || id = 15 || id = 16);
-        let parent_id = xpath_to_int "rasd:Parent/text()" 0 in
 
         (* XXX We assume the OVF lists these in order.
         let address = xpath_to_int "rasd:AddressOnParent/text()" 0 in
         *)
 
         (* Find the parent controller. *)
-        let controller = parent_controller parent_id in
+        let parent_id = xpath_to_int "rasd:Parent/text()" 0 in
+        let controller +          match parent_id with
+          | 0 -> None
+          | id -> parent_controller id in
 
         let typ            match id with
-- 
2.1.0

Pino Toscano

2014-Nov-24 18:01 UTC

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Re: [Libguestfs] [PATCH] v2v: -i ova: Remove incorrect warning for disks that have no parent controller (RHBZ#1167302).

On Monday 24 November 2014 16:01:36 Richard W.M. Jones
wrote:> Don't assume every disk <Item> has a <Parent> field.  For
floppy disks
> this is not the case.
> 
> Thanks: Junqin Zhou
> ---
>  v2v/input_ova.ml | 14 ++++++++++----
>  1 file changed, 10 insertions(+), 4 deletions(-)
> 
> diff --git a/v2v/input_ova.ml b/v2v/input_ova.ml
> index 95af2e5..9a9c10a 100644
> --- a/v2v/input_ova.ml
> +++ b/v2v/input_ova.ml
> @@ -187,14 +187,17 @@ object
>        for i = 0 to nr_nodes-1 do
>          let n = Xml.xpathobj_node doc obj i in
>          Xml.xpathctx_set_current_context xpathctx n;
> -        let parent_id = xpath_to_int "rasd:Parent/text()" 0 in
> 
>          (* XXX We assume the OVF lists these in order.
>          let address = xpath_to_int "rasd:AddressOnParent/text()"
0 in
>          *)
> 
>          (* Find the parent controller. *)
> -        let controller = parent_controller parent_id in
> +        let parent_id = xpath_to_int "rasd:Parent/text()" 0 in
> +        let controller > +          match parent_id with
> +          | 0 -> None
> +          | id -> parent_controller id in
> 
>          Xml.xpathctx_set_current_context xpathctx n;
>          let file_id = xpath_to_string "rasd:HostResource/text()"
""
> in @@ -255,14 +258,17 @@ object
>          Xml.xpathctx_set_current_context xpathctx n;
>          let id = xpath_to_int "rasd:ResourceType/text()" 0 in
>          assert (id = 14 || id = 15 || id = 16);
> -        let parent_id = xpath_to_int "rasd:Parent/text()" 0 in
> 
>          (* XXX We assume the OVF lists these in order.
>          let address = xpath_to_int "rasd:AddressOnParent/text()"
0 in
>          *)
> 
>          (* Find the parent controller. *)
> -        let controller = parent_controller parent_id in
> +        let parent_id = xpath_to_int "rasd:Parent/text()" 0 in
> +        let controller > +          match parent_id with
> +          | 0 -> None
> +          | id -> parent_controller id in
> 
>          let typ >            match id with
LGTM.

-- 
Pino Toscano

Pino Toscano

2014-Nov-24 19:21 UTC

head link

Re: [Libguestfs] [PATCH] v2v: -i ova: Remove incorrect warning for disks that have no parent controller (RHBZ#1167302).

On Monday 24 November 2014 16:01:36 Richard W.M. Jones
wrote:> Don't assume every disk <Item> has a <Parent> field.  For
floppy disks
> this is not the case.
> 
> Thanks: Junqin Zhou
> ---
>  v2v/input_ova.ml | 14 ++++++++++----
>  1 file changed, 10 insertions(+), 4 deletions(-)
> 
> diff --git a/v2v/input_ova.ml b/v2v/input_ova.ml
> index 95af2e5..9a9c10a 100644
> --- a/v2v/input_ova.ml
> +++ b/v2v/input_ova.ml
> @@ -187,14 +187,17 @@ object
>        for i = 0 to nr_nodes-1 do
>          let n = Xml.xpathobj_node doc obj i in
>          Xml.xpathctx_set_current_context xpathctx n;
> -        let parent_id = xpath_to_int "rasd:Parent/text()" 0 in
>  
>          (* XXX We assume the OVF lists these in order.
>          let address = xpath_to_int "rasd:AddressOnParent/text()"
0 in
>          *)
>  
>          (* Find the parent controller. *)
> -        let controller = parent_controller parent_id in
> +        let parent_id = xpath_to_int "rasd:Parent/text()" 0 in
> +        let controller > +          match parent_id with
> +          | 0 -> None
> +          | id -> parent_controller id in
>  
>          Xml.xpathctx_set_current_context xpathctx n;
>          let file_id = xpath_to_string "rasd:HostResource/text()"
"" in
> @@ -255,14 +258,17 @@ object
>          Xml.xpathctx_set_current_context xpathctx n;
>          let id = xpath_to_int "rasd:ResourceType/text()" 0 in
>          assert (id = 14 || id = 15 || id = 16);
> -        let parent_id = xpath_to_int "rasd:Parent/text()" 0 in
>  
>          (* XXX We assume the OVF lists these in order.
>          let address = xpath_to_int "rasd:AddressOnParent/text()"
0 in
>          *)
>  
>          (* Find the parent controller. *)
> -        let controller = parent_controller parent_id in
> +        let parent_id = xpath_to_int "rasd:Parent/text()" 0 in
> +        let controller > +          match parent_id with
> +          | 0 -> None
> +          | id -> parent_controller id in
>  
>          let typ >            match id with
> 
Slightly related note: parent_controller mentions "hard disk" in its
error messages, while that function seems to be used also for non-hd
resources. Should those be made a bit more generic, or non-hd cases
shouldn't generally get into error situations?

-- 
Pino Toscano

Richard W.M. Jones

2014-Nov-25 14:34 UTC

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Re: [Libguestfs] [PATCH] v2v: -i ova: Remove incorrect warning for disks that have no parent controller (RHBZ#1167302).

On Mon, Nov 24, 2014 at 08:21:41PM +0100, Pino Toscano
wrote:> Slightly related note: parent_controller mentions "hard disk" in
its
> error messages, while that function seems to be used also for non-hd
> resources. Should those be made a bit more generic, or non-hd cases
> shouldn't generally get into error situations?
I pushed a small patch to fix this.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
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