Re: [Xen-devel] libxl: error: libxl.c:2150:libxl_set_memory_target new target 0 for dom0 is below the minimum threshold

[Teck Choon Giam <giamteckchoon@xxxxxxxxx>]

On Tue, Nov 22, 2011 at 4:18 PM, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:
> On Tue, 2011-11-22 at 07:56 +0000, Teck Choon Giam wrote:
> [...]
>> memory = 15360
>> maxmem = 15360
> [...]
>> How much RAM does the host system have? What are your hypervisor and
>> > dom0 command lines.
>>
>> 16GB RAM.
>
> So you are assigning 15GB out of a total of 16GB to the guest which
> necessitates ballooning dom0 from 16GB down to 1GB.

I actually set dom0-min-mem 512 in xend-config.sxp as well.

>
>> title Scientific Linux (2.6.32.47-0.xen.pvops.choon.sl6)
>>       root (hd0,0)
>>       kernel /xen.gz dom0_mem=512M loglvl=all guest_loglvl=all cpuidle=0 
>> cpufreq=none
>
> But you have already forced the dom0_mem to 512M. I suspect this is
> colluding with the above ballooning to make it look as if dom0 should be
> ballooned to <128M, which causes xl to print a warning message. Perhaps
> someone who understands this stuff can comment on whether or not this
> should be the case.
>
> Can you try setting "autoballoon=0" in /etc/xl.cfg.

You mean /etc/xen/xl.conf?  I have done so and guess what?  IT WORKS!!! :)

>
> I can't see anything in the range 23110:23190 which might have caused a
> change in behaviour here though.
>
>>       module /vmlinuz-2.6.32.47-0.xen.pvops.choon.sl6 ro
>> root=UUID=154127e6-9469-4124-9a42-1f6c6160adf4
>> rd_MD_UUID=d5126687:736a76db:5d5f597f:8b16fad4 rd_NO_LUKS rd_NO_LVM
>> rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc
>> KEYTABLE=us crashkernel=auto rhgb quiet panic=5 panic_timeout=10
>>       module /initramfs-2.6.32.47-0.xen.pvops.choon.sl6.img
>>
>> >
>> > What is the last changeset which worked for you?
>>
>> I did provide last working changeset is 23110 in my initial email.
>
> So you did, sorry I missed it.
>
> Ian.

You do not need to say sorry as without your assistance I can't even
possible play with Xen for so long and having fun ;)

Thanks.

Kindest regards,
Giam Teck Choon

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