Masaki Kanno
2007-Aug-27 07:21 UTC
[Xen-ia64-devel] [PATCH][RFC] Fix error message for xm create command
Hi, When I tested xm create command, I saw the following error message. I expected an error message "Error: (12, ''Cannot allocate memory'')" because I intentionally caused a memory shortage on the test. But the error message was different from my expectation. # xm create /xen/HVMdomain.1 Using config file "/xen/HVMdomain.1". Error: an integer is required I looked at xend.log to examine the cause why the error message was shown. (Could you see the attached xend.log?) xend had the error message "Error: (12, ''Cannot allocate memory'')" first. But xend changed the error message to "Error: an integer is required" halfway. I''m not sure about the cause why an exception occurred in logging processing. But when I applied an attached patch, I confirmed that the error message that I expected was shown. The patch does not call xc.domain_destroy_hook() if self.domid is None. Could you comment on the patch? I''d like to solve the problem because I think that users want correct error message. Signed-off-by: Masaki Kanno <kanno.masaki@jp.fujitsu.com> Best regards, Kan _______________________________________________ Xen-ia64-devel mailing list Xen-ia64-devel@lists.xensource.com http://lists.xensource.com/xen-ia64-devel
Zhang, Xing Z
2007-Aug-27 08:14 UTC
[Xen-devel] RE: [Xen-ia64-devel] [PATCH][RFC] Fix error message for xm createcommand
Hi Kanno:
I did a quick investigation and found some codes perform strange.
As I know, XEND do below flow to create a domain:
XendDomain(single one) ---------> XendDomainInfo(represent a domain)
-------->Image(a set of handle)
When XendDomainInfo init, it executes below codes:
( __init__ function)
self.info = info
if domid == None:
self.domid = self.info.get(''domid'')
else:
self.domid = domid
I originally thought these codes could guarantee domid is not none. But seems
it''s un-use when a error raise. The domid in info is still none!
I am also not familiar with details of Xend. Anyway, I think you patch makes
the code strong.
>-----Original Message-----
>From: xen-ia64-devel-bounces@lists.xensource.com
>[mailto:xen-ia64-devel-bounces@lists.xensource.com] On Behalf Of Masaki
Kanno
>Sent: 2007年8月27日 15:22
>To: xen-devel@lists.xensource.com; xen-ia64-devel@lists.xensource.com
>Subject: [Xen-ia64-devel] [PATCH][RFC] Fix error message for xm
createcommand
>
>Hi,
>
>When I tested xm create command, I saw the following error message.
>I expected an error message "Error: (12, ''Cannot allocate
memory'')"
>because I intentionally caused a memory shortage on the test.
>But the error message was different from my expectation.
>
># xm create /xen/HVMdomain.1
>Using config file "/xen/HVMdomain.1".
>Error: an integer is required
>
>I looked at xend.log to examine the cause why the error message was
>shown. (Could you see the attached xend.log?)
>xend had the error message "Error: (12, ''Cannot allocate
memory'')"
>first. But xend changed the error message to "Error: an integer is
>required" halfway.
>I''m not sure about the cause why an exception occurred in logging
>processing. But when I applied an attached patch, I confirmed that
>the error message that I expected was shown. The patch does not
>call xc.domain_destroy_hook() if self.domid is None.
>
>Could you comment on the patch? I''d like to solve the problem
>because I think that users want correct error message.
>
>
>Signed-off-by: Masaki Kanno <kanno.masaki@jp.fujitsu.com>
>
>Best regards,
> Kan
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