Re: kexec and kdump on Xen??

[Don Slutz <dslutz@verizon.com>]

On 04/17/14 21:45, Zhang, Yang Z wrote:
> Andrew Cooper wrote on 2014-04-17:
>> On 17/04/14 02:19, Zhang, Yang Z wrote:
>> As for real examples,  XenServer unconditionally sets up a native
>> crash kernel and does use it in the case of a Xen/dom0 crash.  It does
>> work reliably and repeatedly[1] and is routinely tested.
> I think XenServer uses the old approach to do the kexec. What I am trying is the new kexec/kdump feature which enabled in Xen4.4.
> One question, I remember kexec support is missing in 2.6.32-pvops kernel. If XenServer works well, do you know where can I find the patch to enable it for 2.6.32 kernel?
>

Verizon is using the new 4.4 way to do kdump.  So far all Xen/dom0
crashes have produced dumps.  This is using an unchanged kernel
3.8.11-100.fc17.x86_64.

     -Don Slutz

>> ~Andrew
>>
>> [1] We are aware of one hardware specific bug whereby the crash kernel
>> fails to set up a timer interrupt.  Investigating it is on my todo list.
>
> Best regards,
> Yang
>
>
>
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