Xen users - Mar 2012 - Not enough memory to relocate the dom0 kernel image

Hi all.
I have trouble with xen booting on IBM System x3620 M3. My system is
gentoo. I use gpart and howtos to create partitions, I use grub2 as
bootloader. I try xen stable and unstable with same error (see attach).

I try to use pxelinux with such config lines:
DEFAULT x
LABEL x
  IPAPPEND 1
  kernel mboot.c32
  append /xen-4.1.2.gz dom0_mem=2048M ---
/kernel-genkernel-x86_64-3.2.9-gentoo vga=0x318 dolvm root=/dev/kuizo/root
ro panic=32 vga=0x7 --- /initramfs-genkernel-x86_64-3.2.9-gentoo

and boot was successful.

I find http://support.citrix.com/article/CTX128433 and
http://www-947.ibm.com/support/entry/portal/docdisplay?brand=5000008&lndocid=MIGR-5083078with
same problem. I try to change rom parameters, but it didn''t help me.

What is wrong and how can I boot system under xen?

-- 
С уважением,
Мокеев Сергей Леонидович
http://mokeev.tel/
http://мокеев.рф/ <http://xn--b1afasjm.xn--p1ai/>



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El 14/03/12 19:56, Sergey L. Mokeev escribió:
> I have trouble with xen booting on IBM System x3620 M3. My system is
> gentoo. I use gpart and howtos to create partitions, I use grub2 as
> bootloader. I try xen stable and unstable with same error (see attach).
How much total RAM do you have in the box?

Have you tried to suppress completely dom0_mem= parameter? In that case, 
how much RAM does your Dom0 see ("free")? And the Hypervisor ("xm
list",
"xm top")?

-- 
Alexandre Kouznetsov

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Hi.
I have 32G total RAM in the box.

I try to suppress dom0_mem= parameter at config at tftpserver, in this case
free says:
# free -h
             total       used       free     shared    buffers     cached
Mem:           28G       277M        28G         0B        37M       120M
-/+ buffers/cache:       119M        28G
Swap:           0B         0B         0B

xm list
Name                                        ID   Mem VCPUs      State
Time(s)
Domain-0                                     0 30211    24     r-----
 417.5

and xm top:
xentop - 06:24:06   Xen 4.1.2
1 domains: 1 running, 0 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown
Mem: 33542880k total, 31303000k used, 2239880k free    CPUs: 24 @ 2666MHz
      NAME  STATE   CPU(sec) CPU(%)     MEM(k) MEM(%)  MAXMEM(k) MAXMEM(%)
VCPUS NETS NETTX(k) NETRX(k) VBDS   VBD_OO   VBD_RD   VBD_WR  VBD_RSECT
 VBD_WSECT SSID
  Domain-0 -----r        416    0.3   30936836   92.2   no limit       n/a
   24    0        0        0    0        0        0        0          0
     0    0


2012/3/16 Alexandre Kouznetsov <alk@ondore.com>
> El 14/03/12 19:56, Sergey L. Mokeev escribió:
>
>  I have trouble with xen booting on IBM System x3620 M3. My system is
>> gentoo. I use gpart and howtos to create partitions, I use grub2 as
>> bootloader. I try xen stable and unstable with same error (see attach).
>>
>
> How much total RAM do you have in the box?
>
> Have you tried to suppress completely dom0_mem= parameter? In that case,
> how much RAM does your Dom0 see ("free")? And the Hypervisor
("xm list",
> "xm top")?
>
> --
> Alexandre Kouznetsov
>
> ______________________________**_________________
> Xen-users mailing list
> Xen-users@lists.xen.org
> http://lists.xen.org/xen-users

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Hi.

Does the condition described in IBM''s link you provided 
(http://www-947.ibm.com/support/entry/portal/docdisplay?brand=5000008&lndocid=MIGR-5083078)
seems to be similar to yours? Do you have a Qlogic QLE4060c/QLE4062c 
that might be conflicting with some other controller? If not, it''s not 
surprising that the workarounds they provided was useless.

It''s funny that pxelinux booted successfully where grub2 failed. If 
nothing else work, maybe you can still use syslinux to load system from 
local disk. As a dirty hack, in case it''s a grub-specific condition and
you still need the system working no-matter-what.
http://wiki.gentoo.org/wiki/Syslinux_Bootloader
https://wiki.archlinux.org/index.php/Syslinux#Manual_Install_-_syslinux
http://www.syslinux.org/wiki/index.php/Mbr

As I can see from your pxelinux configuration and the screenshot, you 
have used a different Xen''s version. Does the Xen 4.2-unstable boots 
fine from pxelinux as well? That would prove that Grub has something to 
do with the condition.

Also, is it possible to see you grub''s configuration, just the
Xen''s
load section?

--
Alexandre Kouznetsov