RE: [Xen-devel] Xen cannot boot with pvops dom0

["Han, Weidong" <weidong.han@xxxxxxxxx>]

Jeremy Fitzhardinge wrote:
> On 06/25/09 02:20, Han, Weidong wrote:
>> I tried with latest Xen unstable (c/s 19833) with latest pvops dom0
>> (commit 384a55c0). Booting will hang, following is the serial
>> console output:  
>> 
>> (XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch
>> input to Xen ) (XEN) Freed 128kB init memory.
>> mapping kernel into physical memory
>> Xen: setup ISA identity maps
>> about to get started...
>> (XEN) ioapic_guest_write: apic=0, pin=2, old_irq=0, new_irq=-1
>> (XEN) ioapic_guest_write: old_entry=000009f0, new_entry=00010900
>> (XEN) ioapic_guest_write: Attempt to remove IO-APIC pin of in-use
>> IRQ! (XEN) ioapic_guest_write: apic=0, pin=4, old_irq=4, new_irq=-1
>> (XEN) ioapic_guest_write: old_entry=000009f1, new_entry=00010900
>> (XEN) ioapic_guest_write: Attempt to remove IO-APIC pin of in-use
>> IRQ! (XEN) ioapic_guest_write: apic=0, pin=0, old_irq=-1, new_irq=0
>> (XEN) ioapic_guest_write: old_entry=00010900, new_entry=000009f0
>> (XEN) ioapic_guest_write: Attempt to add IO-APIC pin for in-use IRQ!
>> (XEN) ioapic_guest_write: apic=0, pin=19, old_irq=19, new_irq=19
>> (XEN) ioapic_guest_write: old_entry=0000a9c0, new_entry=0001a9c0
>> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use
>> IRQ! (XEN) ioapic_guest_write: apic=0, pin=19, old_irq=19, new_irq=19
>> (XEN) ioapic_guest_write: old_entry=0000a9c0, new_entry=0001a9c0
>> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use
>> IRQ! (XEN) ioapic_guest_write: apic=0, pin=23, old_irq=23, new_irq=23
>> (XEN) ioapic_guest_write: old_entry=0000a9d0, new_entry=0001a9d0
>> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use
>> IRQ! (XEN) ioapic_guest_write: apic=0, pin=19, old_irq=19, new_irq=19
>> (XEN) ioapic_guest_write: old_entry=0000a9c0, new_entry=0001a9c0
>> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use
>> IRQ! (XEN) ioapic_guest_write: apic=0, pin=16, old_irq=16, new_irq=16
>> (XEN) ioapic_guest_write: old_entry=0000a9b8, new_entry=0001a9b8
>> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use
>> IRQ! (XEN) ioapic_guest_write: apic=0, pin=18, old_irq=18, new_irq=18
>> (XEN) ioapic_guest_write: old_entry=0000a921, new_entry=0001a921
>> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use
>> IRQ! 
>> 
> 
> The ioapic_guest_write messages are just noise, and have no bearing on
> the problem.  Are there no more messages from the kernel after "about
> to get started"?  The ioapic messages at least tell us it is getting
> quite a distance into the boot and discovering devices.

Actually, pv-ops dom0 boot successfully. I remotely access my machine via 
serial console. Normally after dom0 boot, it display "login:" line. But serial 
console stops at ioapic_guest_write messages when boot pv_ops, I thought it's 
hung. 

But I found xend still cannot be started. I got the following messages when I 
start it:

[root@vt-randy ~]# xend start
ERROR Internal error: Could not obtain handle on privileged command interface 
(2 = No such file or directory)
Traceback (most recent call last):
  File "/usr/sbin/xend", line 36, in ?
    from xen.xend.server import SrvDaemon
  File "usr/lib64/python2.4/site-packages/xen/xend/server/SrvDaemon.py", line 
26, in ?
  File "usr/lib64/python2.4/site-packages/xen/xend/server/relocate.py", line 
28, in ?
  File "usr/lib64/python2.4/site-packages/xen/xend/XendDomain.py", line 35, in ?
  File "usr/lib64/python2.4/site-packages/xen/xend/XendCheckpoint.py", line 20, 
in ?
  File "usr/lib64/python2.4/site-packages/xen/xend/image.py", line 46, in ?
xen.lowlevel.xc.Error: (1, 'Internal error', 'Could not obtain handle on 
privileged command interface (2 = No such file or directory)')


> 
>> Did anyone meet this issue? Is there any difference on build and
>> installation between pvops dom0 and 2.6.18 dom0? Following is my
>> instructions, pls correct me if something is wrong. Appreciate in
>> advance.   
>> 
>> My build and installation instructions:
>>      - cd xen-unstable.hg
>>      - make world (linux-2.6-pvops.git will be cloned)
>>      - make install
>> 
>> My grub entry:
>>      title Xen - pvops
>>              root (hd0,2)
>>              kernel /boot/xen.gz dom0_mem=512m
>>              module /boot/vmlinuz-2.6-30.rc3-tip ro root=/dev/sda3
>> console=tty0 console=ttyS0 
>> 
> 
> What happens if you have "console=hvc0 earlyprintk=xen
> ignore_loglevel" on the "module" line?  You should get more output
> from the kernel.  You might also want "console=com1,vga" on the Xen
> line. 
> 
>     J


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