Re: [gentoo-server] DomU freezes in the middle of booting

[Pandu Poluan]

On Apr 12, 2012 8:51 PM, "Konstantin" <konstantin@××××××××.com> wrote:
>
> Hello,
>
> Thursday, April 12, 2012, 15:52:50, Konstantin wrote:
> > Thursday, April 12, 2012, 15:29:42, Pandu Poluan wrote:
> >>> Thursday, April 12, 2012, 13:09:15, Pandu Poluan wrote:
> >>> > Have you tried:
> >>> > root   = '/dev/xvda1'
> >>> > That is, without 'ro'?
> >>> > Rgds,
> >>>
> >>> Thank you. Already tried without any difference.
> >>>
> >> It's a DomU, right? Why do you have Dom0 option enabled?
>
> > You mean this part of .config file:
> > CONFIG_XEN_DOM0=y
> > CONFIG_XEN_PRIVILEGED_GUEST=y
> > CONFIG_XEN_PVHVM=y
> > CONFIG_XEN_MAX_DOMAIN_MEMORY=128
> > CONFIG_XEN_SAVE_RESTORE=y
>
> > I just could not find how to disable this code in menuconfig. :)
>
> If I'm trying to turn it off, but then other frontend options
> disappear.
>
> Latest update: When I saw
> ---------------------
>  * Starting local
>  [ ok ]
> ---------------------
>
> I've noticed that domU actually working. I've tried to change inittab
> remotely via ssh to something like
>
> # TERMINALS
> x1:12345:respawn:/sbin/agetty 38400 console linux
> #c1:12345:respawn:/sbin/agetty 38400 tty1 linux
> #c2:2345:respawn:/sbin/agetty 38400 tty2 linux
> #c3:2345:respawn:/sbin/agetty 38400 tty3 linux
> #c4:2345:respawn:/sbin/agetty 38400 tty4 linux
> #c5:2345:respawn:/sbin/agetty 38400 tty5 linux
> #c6:2345:respawn:/sbin/agetty 38400 tty6 linux
>
> Then reinitialized init by
> localhost ~ # init q
>
> and console in Dom0 become interactive again. So that freezing after
> "Starting local" was the console problem anyway.
>
> Right now only one left with that random start. DomU starts
> successfully about one time per three unsuccessful.
>
> I've noticed that it gets stuck when kernel outputs this text:
>
> -------------------------------------------------------------
> Switching to clocksource xen
> pnp: PnP ACPI: disabled
> CE: xen increased min_delta_ns to 150000 nsec
> CE: xen increased min_delta_ns to 225000 nsec
> CE: xen increased min_delta_ns to 337500 nsec
> CE: xen increased min_delta_ns to 506250 nsec
> CE: xen increased min_delta_ns to 759375 nsec
> CE: xen increased min_delta_ns to 1139062 nsec
> CE: xen increased min_delta_ns to 1708593 nsec
> CE: xen increased min_delta_ns to 2562889 nsec
> CE: xen increased min_delta_ns to 3844333 nsec
> CE: xen increased min_delta_ns to 5766499 nsec
> CE: xen increased min_delta_ns to 8649748 nsec
> CE: xen increased min_delta_ns to 10000000 nsec
> CE: Reprogramming failure. Giving up
> CE: Reprogramming failure. Giving up
> hrtimer: interrupt took 5171 ns
> TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
> TCP: Hash tables configured (established 131072 bind 65536)
> TCP reno registered
> UDP hash table entries: 512 (order: 2, 16384 bytes)
> UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
> CE: xen increased min_delta_ns to 150000 nsec
> CE: xen increased min_delta_ns to 225000 nsec
> CE: xen increased min_delta_ns to 337500 nsec
> CE: xen increased min_delta_ns to 506250 nsec
> CE: xen increased min_delta_ns to 759375 nsec
> CE: xen increased min_delta_ns to 1139062 nsec
> CE: xen increased min_delta_ns to 1708593 nsec
> CE: xen increased min_delta_ns to 2562889 nsec
> CE: xen increased min_delta_ns to 3844333 nsec
> CE: xen increased min_delta_ns to 5766499 nsec
> CE: xen increased min_delta_ns to 8649748 nsec
> CE: xen increased min_delta_ns to 10000000 nsec
> CE: Reprogramming failure. Giving up
> CE: Reprogramming failure. Giving up
> platform rtc_cmos: registered platform RTC device (no PNP device found)
> -------------------------------------------------------------
>
> And when kernel not writing any "CE: " messages domU boots
> successfully:
>
> --------------------------------
> PCI: System does not support PCI
> PCI: System does not support PCI
> Switching to clocksource xen
> pnp: PnP ACPI: disabled
> --------------------------------
>
> Trying to figure out what to do next.
>
> --
> Konstantin
>
>

Try using "tickless". I forgot where exactly, but IIRC on the same page
where you set the CPU type.

Rgds,