Re: xl mem-max error

[Zhigang Wang <zhigang.x.wang@oracle.com>]

OK. Let me try my best:

>>> I'm confused by the description of what's going on, in particular the
>>> mixing of mem-max commands and target xenstore nodes (since the former
>>> doesn't really affect the latter).
>>>
>>> How was the domain started (memory= and maxmem=).

xl create with 'memory = 700', no maxmem been set. I think it means maxmem = memory for this case.

>>> What were static-max and target at the point?

     /local/domain/3/memory/static-max = "716800"
     /local/domain/3/memory/target = "716801"

>>> What did they change to when xl mem-max was issued? 

When I issue 'xl mem-max <domid> 700', static-max and target in xenstore will not change, but it will cause the command to fail.

Because: "libxl: error: libxl.c:4549:libxl_domain_setmaxmem: memory_static_max must be greater than or or equal to memory_dynamic_max"

>>> What did you expect them to change to instead?

I expect I can set the maxmem to the same value I initially set (700).

Thanks,

Zhigang

>>
>> Sorry for the confusion I made. Here is the problem I encountered:
> 
> This is just restating what was upthread, which, as I say, is confusing
> to me.
> 
> Please can you just answer the 4 questions I asked and we can take it
> from there.
> 
>>
>> 1. Start a VM with 'memory = 700'.
>> 2. Doing 'xl mem-max <domid> 700' will cause a error.
>>
>> My expectation: after I start a VM with 'memory = 700', I can do 'xl mem-max <domid> 700'.
>>
>> A little analysis of the problem:
>>
>> 1. Error: "libxl: error: libxl.c:4549:libxl_domain_setmaxmem: memory_static_max must be greater than or or equal to memory_dynamic_max"
>>
>> 2. I find static-max always less then target memory in xenstore:
>>
>>     /local/domain/3/memory/static-max = "716800" (memory_static_max)
>>     /local/domain/3/memory/target = "716801"     (memory_dynamic_max)
>>
>>    which looks bogus.
>>
>> Thanks,
>>
>> Zhigang
> 
>