Re: [Xen-devel] kexec and kdump on Xen??

[Daniel Kiper <dkiper@xxxxxxxxxxxx>]

Hey,

On Mon, Apr 14, 2014 at 08:15:35AM +0000, Zhang, Yang Z wrote:
> Daniel Kiper wrote on 2014-04-14:
> > Hi,
> >
> > On Mon, Apr 14, 2014 at 03:38:26AM +0000, Zhang, Yang Z wrote:
> >> Hi Daniel
> >>
> >> Are kexec/kdump supported by latest Xen + upstream Linux?
> >> I remember it only works with xen+2.6.18 linux. I know you are
> >> working on enable it. So I wonder to know what the current status is. 
> >> Thanks.
> >
> > Xen 4.4 has new kexec implementation written by David Vrabel.
> > It does not require any specific Linux Kernel version because this
> > implementation is self contained. However, please do not forget to use
>
> Cool..
>
> > latest stable version of kexec-tools too.
>
> Is there any BKM to use it? I saw an old wiki page but
> not sure whether it is still suitable.

I assume that you are asking about kexec/kdump support in dom0.

Just build kexec-tools with Xen support enabled (you
must provide relevant Xen header files and libraries).
Then add crashkernel argument to Xen (e.g. crashkernel=512m@64m)
and reboot machine. Use kexec-tools like on bare metal machines.

Daniel

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