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Michael Holzt

2005-May-16 21:56 UTC

[Xen-users] Error: "8MB is greater than 0MB limit"

I want to try out Xen, but i can''t get it working. All i get is the 
error:

  (XEN) Initial guest OS requires too much space
  (XEN) (8MB is greater than 0MB limit)

I''m using Xen 2.05 (self-built), with a customized xen0 kernel. My
kernel does
_not_ use initrd, because i hate initrd. The "0 MB" limit looks
suspicious and
is probably the source of my problem. How is it caused?


Here is the complete bootlog:

kernel /xen.gz dom0_mem=128M com1=57600,8n1
   [Multiboot-elf, <0x100000:0x3ef5c:0x360a4>, shtab=0x175078,
entry=0x100000]
module /vmlinuz-xen0 ro root=/dev/sda3 console=tty1 console=ttyS0,57600
   [Multiboot-module @ 0x176000, 0x40919c bytes]

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

 Xen version 2.0.5 (root@keleos.net) (gcc version 3.3.5 (Debian 1:3.3.5-6)) Mon
May 16 00:16:42 CEST 2005
 Latest ChangeSet: information unavailable

(XEN) Physical RAM map:
(XEN)  0000000000000000 - 00000000000a0000 (usable)
(XEN)  00000000000f0000 - 0000000000100000 (reserved)
(XEN)  0000000000100000 - 000000001f7f0000 (usable)
(XEN)  000000001f7f0000 - 000000001f7f3000 (ACPI NVS)
(XEN)  000000001f7f3000 - 000000001f800000 (ACPI data)
(XEN)  00000000fec00000 - 0000000100000000 (reserved)
(XEN) System RAM: 503MB (515648kB)
(XEN) Xen heap: 10MB (10780kB)
(XEN) CPU0: Before vendor init, caps: bfebfbff 00000000 00000000, vendor = 0
(XEN) CPU#0: Hyper-Threading is disabled
(XEN) CPU caps: bfebfbff 00000000 00000000 00000000
(XEN) found SMP MP-table at 000f4ed0
(XEN) ACPI: RSDP (v000 VIAP4M                                    ) @ 0x000f6870
(XEN) ACPI: RSDT (v001 VIAP4M AWRDACPI 0x42302e31 AWRD 0x00000000) @ 0x1f7f3000
(XEN) ACPI: FADT (v001 VIAP4M AWRDACPI 0x42302e31 AWRD 0x00000000) @ 0x1f7f3040
(XEN) ACPI: MADT (v001 VIAP4M AWRDACPI 0x42302e31 AWRD 0x00000000) @ 0x1f7f6c80
(XEN) ACPI: DSDT (v001 VIAP4M AWRDACPI 0x00001000 MSFT 0x0100000d) @ 0x00000000
(XEN) ACPI: Local APIC address 0xfee00000
(XEN) ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
(XEN) Processor #0 Pentium 4(tm) XEON(tm) APIC version 20
(XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] disabled)
(XEN) ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
(XEN) ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
(XEN) Using ACPI for processor (LAPIC) configuration information
(XEN) Intel MultiProcessor Specification v1.4
(XEN)     Virtual Wire compatibility mode.
(XEN) OEM ID: OEM00000 Product ID: PROD00000000 APIC at: 0xFEE00000
(XEN) I/O APIC #2 Version 17 at 0xFEC00000.
(XEN) Enabling APIC mode: Flat. Using 1 I/O APICs
(XEN) Processors: 1
(XEN) Using scheduler: Borrowed Virtual Time (bvt)
(XEN) Initializing CPU#0
(XEN) Detected 2404.128 MHz processor.
(XEN) CPU0: Before vendor init, caps: bfebfbff 00000000 00000000, vendor = 0
(XEN) CPU#0: Hyper-Threading is disabled
(XEN) CPU caps: bfebfbff 00000000 00000000 00000000
(XEN) CPU0 booted
(XEN) enabled ExtINT on CPU#0
(XEN) ESR value before enabling vector: 00000000
(XEN) ESR value after enabling vector: 00000000
(XEN) Error: only one processor found.
(XEN) ENABLING IO-APIC IRQs
(XEN) Setting 2 in the phys_id_present_map
(XEN) ...changing IO-APIC physical APIC ID to 2 ... ok.
(XEN) init IO_APIC IRQs
(XEN) ..TIMER: vector=0x41 pin1=2 pin2=0
(XEN) Using local APIC timer interrupts.
(XEN) Calibrating APIC timer for CPU0...
(XEN) ..... CPU speed is 2404.1072 MHz.
(XEN) ..... Bus speed is 100.1710 MHz.
(XEN) ..... bus_scale = 0x00006695
(XEN) Time init:
(XEN) .... System Time: 20002419ns
(XEN) .... cpu_freq:    00000000:8F4C17D0
(XEN) .... scale:       00000001:A9EF1633
(XEN) .... Wall Clock:  1116279984s 170000us
(XEN) PCI: PCI BIOS revision 2.10 entry at 0xfb300, last bus=1
(XEN) PCI: Using configuration type 1
(XEN) PCI: Probing PCI hardware
(XEN) PCI: Probing PCI hardware (bus 00)
(XEN) PCI: Using IRQ router VIA [1106/3177] at 00:11.0
(XEN) PCI->APIC IRQ transform: (B0,I9,P0) -> 17
(XEN) PCI->APIC IRQ transform: (B0,I17,P0) -> 15
(XEN) PCI->APIC IRQ transform: (B0,I18,P0) -> 23
(XEN) PCI->APIC IRQ transform: (B1,I0,P0) -> 16
(XEN) PCI: Via IRQ fixup for 00:10.1, from 255 to 0
(XEN) PCI: Via IRQ fixup for 00:10.2, from 255 to 0
(XEN) mtrr: v2.0 (20020519)
(XEN) *** LOADING DOMAIN 0 ***
(XEN) Xen-ELF header found:
''GUEST_OS=linux,GUEST_VER=2.6,XEN_VER=2.0,VIRT_BASE=0xC0000000,LOADER=generic,PT_MODE_WRITABLE''
(XEN) PHYSICAL MEMORY ARRANGEMENT:
(XEN)  Kernel image:  00c00000->0100919c
(XEN)  Initrd image:  00000000->00000000
(XEN)  Dom0 alloc.:   01400000->01420000
(XEN) VIRTUAL MEMORY ARRANGEMENT:
(XEN)  Loaded kernel: c0100000->c053a604
(XEN)  Init. ramdisk: c053b000->c053b000
(XEN)  Phys-Mach map: c053b000->c053b080
(XEN)  Page tables:   c053c000->c053f000
(XEN)  Start info:    c053f000->c0540000
(XEN)  Boot stack:    c0540000->c0541000
(XEN)  TOTAL:         c0000000->c0800000
(XEN)  ENTRY ADDRESS: c0100000
(XEN) Initial guest OS requires too much space
(XEN) (8MB is greater than 0MB limit)

****************************************
Could not set up DOM0 guest OS
Aieee! CPU0 is toast...
****************************************

Reboot in five seconds...





Regards
Michael

-- 
      It''s an insane world, but i''m proud to be a part of it.
-- Bill Hicks

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

James Bulpin

2005-May-16 22:04 UTC

head link

Re: [Xen-users] Error: "8MB is greater than 0MB limit"

Probably a dom0_mem= problem  - see
http://lists.xensource.com/archives/html/xen-users/2005-05/msg00191.html

On Mon, May 16, 2005 9:56 pm, Michael Holzt said:> I want to try out Xen, but i can''t get it working. All i get is
the
> error:
>
>   (XEN) Initial guest OS requires too much space
>   (XEN) (8MB is greater than 0MB limit)
> [snipped]

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http://lists.xensource.com/xen-users

Fernando Maior

2005-May-16 22:12 UTC

head link

Re: [Xen-users] Error: "8MB is greater than 0MB limit"

On 5/16/05, Michael Holzt <kju@fqdn.org> wrote:> I want to try out Xen, but i can''t get it working. All i get is
the
> error:
> 
>   (XEN) Initial guest OS requires too much space
>   (XEN) (8MB is greater than 0MB limit)
> 
> I''m using Xen 2.05 (self-built), with a customized xen0 kernel. My
kernel does
> _not_ use initrd, because i hate initrd. The "0 MB" limit looks
suspicious and
> is probably the source of my problem. How is it caused?
> 
> Here is the complete bootlog:
> 
> kernel /xen.gz dom0_mem=128M com1=57600,8n1
>    [Multiboot-elf, <0x100000:0x3ef5c:0x360a4>, shtab=0x175078,
entry=0x100000]
> module /vmlinuz-xen0 ro root=/dev/sda3 console=tty1 console=ttyS0,57600
>    [Multiboot-module @ 0x176000, 0x40919c bytes]
> 
>  __  __            ____    ___   ____
>  \ \/ /___ _ __   |___ \  / _ \ | ___|
>   \  // _ \ ''_ \    __) || | | ||___ \
>   /  \  __/ | | |  / __/ | |_| | ___) |
>  /_/\_\___|_| |_| |_____(_)___(_)____/
> 
>  http://www.cl.cam.ac.uk/netos/xen
>  University of Cambridge Computer Laboratory
> 
>  Xen version 2.0.5 (root@keleos.net) (gcc version 3.3.5 (Debian 1:3.3.5-6))
Mon May 16 00:16:42 CEST 2005
>  Latest ChangeSet: information unavailable
> 
> (XEN) Physical RAM map:
> (XEN)  0000000000000000 - 00000000000a0000 (usable)
> (XEN)  00000000000f0000 - 0000000000100000 (reserved)
> (XEN)  0000000000100000 - 000000001f7f0000 (usable)
> (XEN)  000000001f7f0000 - 000000001f7f3000 (ACPI NVS)
> (XEN)  000000001f7f3000 - 000000001f800000 (ACPI data)
> (XEN)  00000000fec00000 - 0000000100000000 (reserved)
> (XEN) System RAM: 503MB (515648kB)
> (XEN) Xen heap: 10MB (10780kB)
> (XEN) CPU0: Before vendor init, caps: bfebfbff 00000000 00000000, vendor =
0
> (XEN) CPU#0: Hyper-Threading is disabled
> (XEN) CPU caps: bfebfbff 00000000 00000000 00000000
> (XEN) found SMP MP-table at 000f4ed0
> (XEN) ACPI: RSDP (v000 VIAP4M                                    ) @
0x000f6870
> (XEN) ACPI: RSDT (v001 VIAP4M AWRDACPI 0x42302e31 AWRD 0x00000000) @
0x1f7f3000
> (XEN) ACPI: FADT (v001 VIAP4M AWRDACPI 0x42302e31 AWRD 0x00000000) @
0x1f7f3040
> (XEN) ACPI: MADT (v001 VIAP4M AWRDACPI 0x42302e31 AWRD 0x00000000) @
0x1f7f6c80
> (XEN) ACPI: DSDT (v001 VIAP4M AWRDACPI 0x00001000 MSFT 0x0100000d) @
0x00000000
> (XEN) ACPI: Local APIC address 0xfee00000
> (XEN) ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
> (XEN) Processor #0 Pentium 4(tm) XEON(tm) APIC version 20
> (XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] disabled)
> (XEN) ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
> (XEN) ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
> (XEN) Using ACPI for processor (LAPIC) configuration information
> (XEN) Intel MultiProcessor Specification v1.4
> (XEN)     Virtual Wire compatibility mode.
> (XEN) OEM ID: OEM00000 Product ID: PROD00000000 APIC at: 0xFEE00000
> (XEN) I/O APIC #2 Version 17 at 0xFEC00000.
> (XEN) Enabling APIC mode: Flat. Using 1 I/O APICs
> (XEN) Processors: 1
> (XEN) Using scheduler: Borrowed Virtual Time (bvt)
> (XEN) Initializing CPU#0
> (XEN) Detected 2404.128 MHz processor.
> (XEN) CPU0: Before vendor init, caps: bfebfbff 00000000 00000000, vendor =
0
> (XEN) CPU#0: Hyper-Threading is disabled
> (XEN) CPU caps: bfebfbff 00000000 00000000 00000000
> (XEN) CPU0 booted
> (XEN) enabled ExtINT on CPU#0
> (XEN) ESR value before enabling vector: 00000000
> (XEN) ESR value after enabling vector: 00000000
> (XEN) Error: only one processor found.
> (XEN) ENABLING IO-APIC IRQs
> (XEN) Setting 2 in the phys_id_present_map
> (XEN) ...changing IO-APIC physical APIC ID to 2 ... ok.
> (XEN) init IO_APIC IRQs
> (XEN) ..TIMER: vector=0x41 pin1=2 pin2=0
> (XEN) Using local APIC timer interrupts.
> (XEN) Calibrating APIC timer for CPU0...
> (XEN) ..... CPU speed is 2404.1072 MHz.
> (XEN) ..... Bus speed is 100.1710 MHz.
> (XEN) ..... bus_scale = 0x00006695
> (XEN) Time init:
> (XEN) .... System Time: 20002419ns
> (XEN) .... cpu_freq:    00000000:8F4C17D0
> (XEN) .... scale:       00000001:A9EF1633
> (XEN) .... Wall Clock:  1116279984s 170000us
> (XEN) PCI: PCI BIOS revision 2.10 entry at 0xfb300, last bus=1
> (XEN) PCI: Using configuration type 1
> (XEN) PCI: Probing PCI hardware
> (XEN) PCI: Probing PCI hardware (bus 00)
> (XEN) PCI: Using IRQ router VIA [1106/3177] at 00:11.0
> (XEN) PCI->APIC IRQ transform: (B0,I9,P0) -> 17
> (XEN) PCI->APIC IRQ transform: (B0,I17,P0) -> 15
> (XEN) PCI->APIC IRQ transform: (B0,I18,P0) -> 23
> (XEN) PCI->APIC IRQ transform: (B1,I0,P0) -> 16
> (XEN) PCI: Via IRQ fixup for 00:10.1, from 255 to 0
> (XEN) PCI: Via IRQ fixup for 00:10.2, from 255 to 0
> (XEN) mtrr: v2.0 (20020519)
> (XEN) *** LOADING DOMAIN 0 ***
> (XEN) Xen-ELF header found:
''GUEST_OS=linux,GUEST_VER=2.6,XEN_VER=2.0,VIRT_BASE=0xC0000000,LOADER=generic,PT_MODE_WRITABLE''
> (XEN) PHYSICAL MEMORY ARRANGEMENT:
> (XEN)  Kernel image:  00c00000->0100919c
> (XEN)  Initrd image:  00000000->00000000
> (XEN)  Dom0 alloc.:   01400000->01420000
> (XEN) VIRTUAL MEMORY ARRANGEMENT:
> (XEN)  Loaded kernel: c0100000->c053a604
> (XEN)  Init. ramdisk: c053b000->c053b000
> (XEN)  Phys-Mach map: c053b000->c053b080
> (XEN)  Page tables:   c053c000->c053f000
> (XEN)  Start info:    c053f000->c0540000
> (XEN)  Boot stack:    c0540000->c0541000
> (XEN)  TOTAL:         c0000000->c0800000
> (XEN)  ENTRY ADDRESS: c0100000
> (XEN) Initial guest OS requires too much space
> (XEN) (8MB is greater than 0MB limit)
> 
> ****************************************
> Could not set up DOM0 guest OS
> Aieee! CPU0 is toast...
> ****************************************
> 
> Reboot in five seconds...
> 
> Regards
> Michael
> 
> --
>       It''s an insane world, but i''m proud to be a part of
it. -- Bill Hicks
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
> 
Michael,

It is not clear from the documentation that the parameter
dom0_mem must be in kbytes. Actually, if you go to the
docs in the home page, you will see that 128M is OK,
and it is NOT true.

May be that is the source of your problems. 

Also, may be it is a good idea to update the docs, online
and in the source/rpm packages...

-- 
Bye,
Fernando Maior
LPIC/1 31908

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http://lists.xensource.com/xen-users

Michael Holzt

2005-May-16 22:16 UTC

head link

Re: [Xen-users] Error: "8MB is greater than 0MB limit"

> Probably a dom0_mem= problem  - see
> http://lists.xensource.com/archives/html/xen-users/2005-05/msg00191.html
Thanks to you and Fernando, actually that was really the problem. However it
seems a little bit strange that the User Guide at 
http://www.cl.cam.ac.uk/Research/SRG/netos/xen/readmes/user/user.html
gives examples using the "xxxM" notation.

I think a user guide should actually give examples which work.

Gruss
Michael

-- 
      It''s an insane world, but i''m proud to be a part of it.
-- Bill Hicks

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http://lists.xensource.com/xen-users

Michael Holzt

2005-May-16 22:19 UTC

head link

Re: [Xen-users] Error: "8MB is greater than 0MB limit"

> Probably a dom0_mem= problem  - see
> http://lists.xensource.com/archives/html/xen-users/2005-05/msg00191.html
Thanks to you and Fernando, that was really the problem. However it seems 
a little bit strange that the User Guide at 
http://www.cl.cam.ac.uk/Research/SRG/netos/xen/readmes/user/user.html
gives examples using the "xxxM" notation.

I think a user guide should actually give examples which work.

Gruss
Michael

-- 
      It''s an insane world, but i''m proud to be a part of it.
-- Bill Hicks

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Ian Pratt

2005-May-16 22:25 UTC

head link

RE: [Xen-users] Error: "8MB is greater than 0MB limit"

> Thanks to you and Fernando, that was really the problem. 
> However it seems a little bit strange that the User Guide at 
> http://www.cl.cam.ac.uk/Research/SRG/netos/xen/readmes/user/user.html
> gives examples using the "xxxM" notation.
> 
> I think a user guide should actually give examples which work.
That''s the proto 3.0 user manual you''re looking at, hence that
syntax
works in the unstable tree, but not in 2.0.5. There aren''t many user
visible differences between 2.x and 3.x but that''s one of them.

Ian

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Michael Holzt

2005-May-16 22:30 UTC

head link

Re: [Xen-users] Error: "8MB is greater than 0MB limit"

> That''s the proto 3.0 user manual you''re looking at,
Actually that would make sense. However on the top of the page is stated
"Xen v2.0 for x86", and throughout the text a few times
"v2.0" of xen is
referenced.



Regards
Michael

-- 
      It''s an insane world, but i''m proud to be a part of it.
-- Bill Hicks

_______________________________________________
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Mark Williamson

2005-May-16 22:31 UTC

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Re: [Xen-users] Error: "8MB is greater than 0MB limit"

On Monday 16 May 2005 23:30, Michael Holzt wrote:> > That''s the proto 3.0 user manual you''re looking at,
>
> Actually that would make sense. However on the top of the page is stated
> "Xen v2.0 for x86", and throughout the text a few times
"v2.0" of xen is
> referenced.
Unfortunately because 3.0 isn''t yet releasable, the docs
haven''t been fully
updated - the syntax described is v3.0 but the version numbers haven''t
been
updated.

Ian: do you think it would be worth changing the nightly build so that the 2.0 
docs are shown on the web?  Or provide links to both?  I think most people 
will be looking for 2.0 docs...

Cheers,
Mark

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Steven Hand

2005-May-17 08:56 UTC

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Re: [Xen-users] Error: "8MB is greater than 0MB limit"

>> Probably a dom0_mem= problem  - see
>>
http://lists.xensource.com/archives/html/xen-users/2005-05/msg00191.html
>
>Thanks to you and Fernando, actually that was really the problem. However it
>seems a little bit strange that the User Guide at 
>http://www.cl.cam.ac.uk/Research/SRG/netos/xen/readmes/user/user.html
>gives examples using the "xxxM" notation.
>
>I think a user guide should actually give examples which work.
The change to the parameter passing for Xen unstable happened very 
recently. 

Anyway, I''ve updated the docs (in the repository) to reflect the 
differences between 2.x and 3.x -- the nightly build will update 
the documentation. 

cheers,

S.

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Xen users - May 2005 - Error: "8MB is greater than 0MB limit"

[Xen-users] Error: "8MB is greater than 0MB limit"

Re: [Xen-users] Error: "8MB is greater than 0MB limit"

Re: [Xen-users] Error: "8MB is greater than 0MB limit"

Re: [Xen-users] Error: "8MB is greater than 0MB limit"

Re: [Xen-users] Error: "8MB is greater than 0MB limit"

RE: [Xen-users] Error: "8MB is greater than 0MB limit"

Re: [Xen-users] Error: "8MB is greater than 0MB limit"

Re: [Xen-users] Error: "8MB is greater than 0MB limit"

Re: [Xen-users] Error: "8MB is greater than 0MB limit"