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[Xen-users] Re: Not enough RAM for domain 0 allocation.


  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: Luca <lucarx76@xxxxxxxxx>
  • Date: Mon, 11 Aug 2008 09:57:48 -0700
  • Delivery-date: Mon, 11 Aug 2008 09:58:57 -0700
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Hi all,
 I haven't been able to boot Xen using a ramdisk whose size is 450M. I get the "Not enough RAM for domain 0 allocation" message while booting Xen.  Just adding the boot's output. Any hints on how to proceed?
Thanks.

 __  __            _____  _   _____                                  
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  /  \  __/ | | |  ___) || |_ ___) |                                   
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 http://www.cl.cam.ac.uk/netos/xen                                 
 University of Cambridge Computer Laboratory                                           

 Xen version 3.1.3 (root@xxxxxxxxx) (gcc version 4.1.2 20070925 (Red Hat 4.1.2-3                                                                               
3)) Fri Aug  8 10:11:40 PDT 2008                               
 Latest ChangeSet: unavailable                             

(XEN) Command line: com1=115200,8n1 noreboot                                           
(XEN) Video information:                       
(XEN)  VGA is text mode 80x25, font 8x16                                       
(XEN)  VBE/DDC methods: V2; EDID transfer time: 1 seconds                                                        
(XEN) Disc information:                      
(XEN)  Found 1 MBR signatures                            
(XEN)  Found 1 EDD information structures                                        
(XEN) Xen-e820 RAM map:                      
(XEN)  0000000000000000 - 000000000009fc00 (usable)                                                  
(XEN)  000000000009fc00 - 00000000000a0000 (reserved)                                                    
(XEN)  00000000000e0000 - 0000000000100000 (reserved)                                                    
(XEN)  0000000000100000 - 00000000bd68e000 (usable)                                                  
(XEN)  00000000bd68e000 - 00000000bd6db000 (ACPI NVS)                                                    
(XEN)  00000000bd6db000 - 00000000be5f3000 (usable)                                                  
(XEN)  00000000be5f3000 - 00000000be5ff000 (reserved)                                                    
(XEN)  00000000be5ff000 - 00000000be6a3000 (usable)                                                  
(XEN)  00000000be6a3000 - 00000000be6a4000 (ACPI NVS)                                                    
(XEN)  00000000be6a4000 - 00000000be6a7000 (ACPI data)                                                     
(XEN)  00000000be6a7000 - 00000000be6f2000 (ACPI NVS)                                                    
(XEN)  00000000be6f2000 - 00000000be6ff000 (ACPI data)                                                     
(XEN)  00000000be6ff000 - 00000000be700000 (usable)                                                  
(XEN)  00000000be700000 - 00000000bf000000 (reserved)                                                    
(XEN)  00000000ffe00000 - 0000000100000000 (reserved)                                                    
(XEN) System RAM: 3045MB (3119016                              
(XEN) Xen heap: 9MB (10172kB)                            
(XEN) Domain heap initialised: DMA width 32 bits                                               
(XEN) PAE enabled, limit: 16 GB                              
(XEN) Processor #0 6:15 APIC version 20                                      
(XEN) Processor #1 6:15 APIC version 20                                      
(XEN) IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23                                                                   
(XEN) Enabling APIC mode:  Flat.  Using 1 I/O APICs                                                  
(XEN) Using scheduler: SMP Credit Scheduler (credit)                                                   
(XEN) Detected 2400.138 MHz processor.                                     
(XEN) HVM: VMX enabled                     
(XEN) VMX: MSR intercept bitmap enabled                                      
(XEN) CPU0: Intel(R) Core(TM)2 CPU         E6600  @                                                
(XEN) Booting processor 1/1 eip 90000                                    
(XEN) CPU1: Intel(R) Core(TM)2 CPU         E6600  @ 2.40GHz stepping 05                                                                      
(XEN) Total of 2 processors activated.                                     
(XEN) ENABLING IO-APIC IRQs                          
(XEN)  -> Using new ACK method                             
(XEN) Platform timer overflows in 234 jiffies.                                             
(XEN) Platform timer is 3.579MHz ACPI PM Timer                                             
(XEN) Brought up 2 CPUs                      
(XEN) *** LOADING DOMAIN 0 ***                             
(XEN)  Xen  kernel: 32-bit, PAE, lsb                                   
(XEN)  Dom0 kernel: 32-bit, PAE, lsb, paddr 0xc0100000 -> 0xc0445cbc                                                                   
(XEN)    
(XEN) ****************************************                                             
(XEN) Panic on CPU 0:                    
(XEN) Not enough RAM for domain 0 allocation.                                            
(XEN) ****************************************                                             
(XEN)    
(XEN) Manual reset required ('noreboot' specified)                                                 

Thanks,
 Luca

On Thu, Aug 7, 2008 at 10:50 PM, Luca <lucarx76@xxxxxxxxx> wrote:
Hi all,
 I'm tryint to boot XEN. If I use a ramdisk bigger than 256M I get the following error

(XEN) ****************************************
(XEN) Panic on CPU 0:
(XEN) Not enough RAM for domain 0 allocation.
(XEN) ****************************************

My system has 3G of RAM. 

Has anyone had the same problem?

Thanks,
  Luca

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