Re: a ton of kernel issues

[George Shuklin <george.shuklin@gmail.com>]

On 13.12.2011 17:37, Ian Campbell wrote:
>> This should work if memory hotplug is enabled.
>>
>> It is also supported without memory hotplug but this requires that the
>> tools supply a suitable memory map that covers the largest
>> memory-static-max limit you wish to support.  I'm not sure if the tools
>> can do this yet.
> With xl this should work using the "maxmem" option. (xm probably uses
> the same name)
>
I'm not sure what maxmem do, but I can say, this option does not allow 
to go beyond initial boot memory for pv_ops kernels and beyond 
static-max memory for -xen kernel.

I tested it with following python script (under xcp, with shutdowned 
squeezed to be sure not get 'reballanced'):

xc.domain_setmaxmem(domid,memory)
xs.write("","/local/domain/%i/memory/dynamic-min"%domid,str(memory*1024))
xs.write("","/local/domain/%i/memory/dynamic-max"%domid,str(memory*1024))
xs.write("","/local/domain/%i/memory/static-max"%domid,str(memory*1024))
xs.write("","/local/domain/%i/memory/target"%domid,str(memory*1024))

It works fine within noted ranges, but simply ignores any request higher 
them.