Re: ESX: failure while performing "CastFromAnyType"

"Ata E Husain Bohra" <ata.husain@xxxxxxxxxxx> · Wed, 18 Jul 2012 12:28:16 -0700

Hi Matthias,

I modified the code significantly from that point, but I think it should be 
still reproducible. I will give it a try and reproduce the issue to share 
the patch sometime later today or tomorrow.

Thanks!
Ata

-----Original Message----- 
From: Matthias Bolte
Sent: Wednesday, July 18, 2012 12:19 PM
To: Ata E Husain Bohra
Cc: libvirt-list@xxxxxxxxxx
Subject: Re:  ESX: failure while performing "CastFromAnyType"

Hi,

do you have a patch that allows me to reproduce this problem? So I can
improve the error reporting here?

Regards,
Matthias

2012/7/18 Ata E Husain Bohra <ata.husain@xxxxxxxxxxx>:
Just want to drop this note, so no one else gets bother with my query. I 
was
able to find the reason and its fixed. It seems one of the ENUMs deep 
inside
one of the structures was not defined. I am not sure if single step is the
only way to solve such issues, as ESX_VI_ERROR never provided any useful
information.

Thanks!
Ata

From: Ata E Husain Bohra
Sent: Monday, July 16, 2012 2:59 PM
To: LIbvirt
Subject:  ESX: failure while performing "CastFromAnyType"

Hi All,

I am trying to extend “iscsi” support for iSCSI driver, currently am stuck
at getting iSCSI target list from the hypervisor. I am using hostSystem
object (propertyNameList is set to “config.storageDevice.hostBusAdapter”) 
to
retrieve list of “HostHostBusAdapter” from ESX, but the call fails to
perform “CastFromAnyType”  from ObjectContent –> HostHostBusAdapter. The
esx_vi_generator.input object definition looks like this:

object HostHostBusAdapter
    String                                   key
o
    String                                   device
r
    Int                                      bus
r
    String                                   status
r
    String                                   model
r
    String                                   driver
o
    String                                   pci
o
end

esx_vi_generaor.py is modified as follows:

"HostHostBusAdapter"         : Object.FEATURE__ANY_TYPE |
                               Object.FEATURE__LIST,

Using gdb, I see the failure occurs at:
esx/esx_vi.c:esxVI_List_CastFromAnyType(..) line 1631:

..
if (esxVI_AnyType_Deserialize(childNode, &childAnyType) < 0 ||
    castFromAnyTypeFunc(childAnyType, &item) < 0 ||
    esxVI_List_Append(list, item) < 0) {
    goto cleanup;
}
..

In one of my earlier patches (subject: Add routines to interface driver) I
patched esx_vi_generator.py to deserialize “string list”; as the patch is
still under review I manually applied the branch to this branch but no
change (did not expect change as structure does not contain any list
object). I am wondering what else is missing to make it work.

Any suggestion how to debug/fix this issue is highly appreciated.

Thanks!
Ata

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