xen 4.0.1 from gitco + Kernel Dom0 from git won'¡t start

xen 4.0.1 from gitco + Kernel Dom0 from git won'¡t start

[David Gonzalez]

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Hi,

I'm using CentOS 5.5 x64 and installed xen 4.0.1 with stock centos
2.6.18-194.26.1.el5xen kernel and initially it's working flawlesly, but I
want/need to use the pv_ops dom0 kernel, so I followed instructions from
this blog
http://ppadala.net/blog/2010/09/how-to-setup-xen4-and-pvops-2-6-32-x-on-centos-5-5-using-gitco-repository/

I bult the kernel correclty and no errors showed up but when I try to boot
with the new kernel a panic shows and then the machine reboots into a cycle
I don't have serial console where to log kernel messages and as the machine
reboots I cannot take a note of what shows up, my grub.conf liooks like
this:

title        pv_ops dom0 (2.6.32.26)
root       (hd0,0)
kernel    /xen.gz-4.0.1 dom0_mem=512M loglvl=all guest_loglvl=all
module  /vmlinuz-2.6.32.26-dom0 ro root=/dev/vhost/root earlyprintk=xen
nomodeset selinux=0
module       /initrd-2.6.32.26-dom0.img

If you can guide me on how to provide you with more informatio I'd be very
happy as this last step has always goven me this results.

Thank you.

---
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Re: xen 4.0.1 from gitco + Kernel Dom0 from git won'¡t start

[David Gonzalez Herrera]

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Hi,

I'm using CentOS 5.5 x64 and installed xen 4.0.1 with stock centos
2.6.18-194.26.1.el5xen kernel and initially it's working flawlesly, but I
want/need to use the pv_ops dom0 kernel, so I followed instructions from
this blog
http://ppadala.net/blog/2010/09/how-to-setup-xen4-and-pvops-2-6-32-x-on-centos-5-5-using-gitco-repository/

I bult the kernel correclty and no errors showed up but when I try to boot
with the new kernel a panic shows and then the machine reboots into a cycle
I don't have serial console where to log kernel messages and as the machine
reboots I cannot take a note of what shows up, my grub.conf liooks like
this:

title        pv_ops dom0 (2.6.32.26)
root       (hd0,0)
kernel    /xen.gz-4.0.1 dom0_mem=512M loglvl=all guest_loglvl=all
module  /vmlinuz-2.6.32.26-dom0 ro root=/dev/vhost/root earlyprintk=xen
nomodeset selinux=0
module       /initrd-2.6.32.26-dom0.img

If you can guide me on how to provide you with more informatio I'd be very
happy as this last step has always goven me this results.

Thank you.

---
*David Gonzalez H.*
DGHVoIP - Linux Server Administration - OpenVPN - Virtualization Support
www.dghvoip.com
USA: +1 (347) 414-8499
COL: +57(1)289-1168
          +57(4)247-0985
          +57(315)838-8326
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Skype: davidgonzalezh
Proud Linux User #294661
... The world is divided into 10 kinds of people, who know binary and those
not ...

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Re: [Xen-devel] xen 4.0.1 from gitco + Kernel Dom0 from git won'¡t start

[Jeremy Fitzhardinge]

On 12/03/2010 01:29 PM, David Gonzalez wrote:
> Hi,
>
> I'm using CentOS 5.5 x64 and installed xen 4.0.1 with stock centos
> 2.6.18-194.26.1.el5xen kernel and initially it's working flawlesly,
> but I want/need to use the pv_ops dom0 kernel, so I followed
> instructions from this blog
> http://ppadala.net/blog/2010/09/how-to-setup-xen4-and-pvops-2-6-32-x-on-centos-5-5-using-gitco-repository/
>
> I bult the kernel correclty and no errors showed up but when I try to
> boot with the new kernel a panic shows and then the machine reboots
> into a cycle I don't have serial console where to log kernel messages
> and as the machine reboots I cannot take a note of what shows up, my
> grub.conf liooks like this:
>
> title        pv_ops dom0 (2.6.32.26)
> root       (hd0,0)
> kernel    /xen.gz-4.0.1 dom0_mem=512M loglvl=all guest_loglvl=all
> module  /vmlinuz-2.6.32.26-dom0 ro root=/dev/vhost/root
> earlyprintk=xen nomodeset selinux=0
> module       /initrd-2.6.32.26-dom0.img
>
> If you can guide me on how to provide you with more informatio I'd be
> very happy as this last step has always goven me this results.

It would be very helpful if you can get a serial console set up.  But
failing that, can you at least take a photo of the screen with the panic?

What stage of the boot process does the panic happen at?

    J

Re: xen 4.0.1 from gitco + Kernel Dom0 from git won'¡t start

[Pasi Kärkkäinen]

On Fri, Dec 03, 2010 at 04:29:45PM -0500, David Gonzalez wrote:
>    Hi,
> 
>    I'm using CentOS 5.5 x64 and installed xen 4.0.1 with stock centos
>    2.6.18-194.26.1.el5xen kernel and initially it's working flawlesly, but I
>    want/need to use the pv_ops dom0 kernel, so I followed instructions from
>    this blog
>    [1]http://ppadala.net/blog/2010/09/how-to-setup-xen4-and-pvops-2-6-32-x-on-centos-5-5-using-gitco-repository/
> 
>    I bult the kernel correclty and no errors showed up but when I try to boot
>    with the new kernel a panic shows and then the machine reboots into a
>    cycle I don't have serial console where to log kernel messages and as the
>    machine reboots I cannot take a note of what shows up, my grub.conf liooks
>    like this:
> 
>    title        pv_ops dom0 (2.6.32.26)
>    root       (hd0,0)
>    kernel    /xen.gz-4.0.1 dom0_mem=512M loglvl=all guest_loglvl=all

Try adding "noreboot lapic=debug apic_verbosity=debug apic=debug iommu=off" to xen.gz line.

>    module  /vmlinuz-2.6.32.26-dom0 ro root=/dev/vhost/root earlyprintk=xen
>    nomodeset selinux=0

Also add "initcall_debug debug loglevel=10" to the vmlinuz line.

>    module       /initrd-2.6.32.26-dom0.img
> 
>    If you can guide me on how to provide you with more informatio I'd be very
>    happy as this last step has always goven me this results.
> 

Hopefully those help.

-- Pasi

Re: [Xen-devel] xen 4.0.1 from gitco + Kernel Dom0 from git won'¡t start

[David Gonzalez]

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On Fri, Dec 3, 2010 at 5:23 PM, Jeremy Fitzhardinge <jeremy@goop.org> wrote:

> On 12/03/2010 01:29 PM, David Gonzalez wrote:
> > Hi,
> >
> > I'm using CentOS 5.5 x64 and installed xen 4.0.1 with stock centos
> > 2.6.18-194.26.1.el5xen kernel and initially it's working flawlesly,
> > but I want/need to use the pv_ops dom0 kernel, so I followed
> > instructions from this blog
> >
> http://ppadala.net/blog/2010/09/how-to-setup-xen4-and-pvops-2-6-32-x-on-centos-5-5-using-gitco-repository/
> >
> > I bult the kernel correclty and no errors showed up but when I try to
> > boot with the new kernel a panic shows and then the machine reboots
> > into a cycle I don't have serial console where to log kernel messages
> > and as the machine reboots I cannot take a note of what shows up, my
> > grub.conf liooks like this:
> >
> > title        pv_ops dom0 (2.6.32.26)
> > root       (hd0,0)
> > kernel    /xen.gz-4.0.1 dom0_mem=512M loglvl=all guest_loglvl=all
> > module  /vmlinuz-2.6.32.26-dom0 ro root=/dev/vhost/root
> > earlyprintk=xen nomodeset selinux=0
> > module       /initrd-2.6.32.26-dom0.img
> >
> > If you can guide me on how to provide you with more informatio I'd be
> > very happy as this last step has always goven me this results.
>
> It would be very helpful if you can get a serial console set up.  But
> failing that, can you at least take a photo of the screen with the panic?
>

Well if there's any way to setup such console without the need of a
management card it'd be used to debug.

I sure can take the pic if the reboot process gives me enough time as it
happens after the xen kernel loads and the vmlinuz part starts but goes
extremely fast and it'd have to be very fast finger on the shooter.


>
> What stage of the boot process does the panic happen at?
>
>    J
>

Just after the xen kernel, the one with the ASCII XEN 4... goes by.

I'll add some lines Pasi told me and see what happens, though the "oops" is
quite long. Is there any line that I should be specially aware of or take a
note and post here?.

thanks for your kind and helpful responses.

Luck.

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Re: [Xen-devel] xen 4.0.1 from gitco + Kernel Dom0 from git won'¡t start

[Konrad Rzeszutek Wilk]

On Sat, Dec 04, 2010 at 12:26:06AM +0200, Pasi Kärkkäinen wrote:
> On Fri, Dec 03, 2010 at 04:29:45PM -0500, David Gonzalez wrote:
> >    Hi,
> > 
> >    I'm using CentOS 5.5 x64 and installed xen 4.0.1 with stock centos
> >    2.6.18-194.26.1.el5xen kernel and initially it's working flawlesly, but I
> >    want/need to use the pv_ops dom0 kernel, so I followed instructions from
> >    this blog
> >    [1]http://ppadala.net/blog/2010/09/how-to-setup-xen4-and-pvops-2-6-32-x-on-centos-5-5-using-gitco-repository/

> > 
> >    I bult the kernel correclty and no errors showed up but when I try to boot

Were there any errors when you did a make install? Such as these:

WARNING: No module ehci-hcd found for kernel 2.6.31.6-0.0.pvops_3.x86_64, continuing anyway
WARNING: No module ohci-hcd found for kernel 2.6.31.6-0.0.pvops_3.x86_64, continuing anyway
WARNING: No module uhci-hcd found for kernel 2.6.31.6-0.0.pvops_3.x86_64, continuing anyway
WARNING: No module ata_piix found for kernel 2.6.31.6-0.0.pvops_3.x86_64, continuing anyway

Re: [Xen-devel] xen 4.0.1 from gitco + Kernel Dom0 from git won'¡t start

[David Gonzalez]

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Hi,

Yeah, there wre lots of them so I just did mkinitrd --builton=ohci ... and
all modules that it said it couldn't find as reading on the tutorialas it
said that it was safe tyo ignore usb errors as they are built into the
kernel, but my mkinitrd just stopped so I had to tweak it until it didn't
complain no more.

In the meantime I'm just building a new kernel so you have any sufggestions
appart from this to install the kernel:

cd linux-2.6-xen
make clean
cp -a .config .config-old
wget -O .config <http_url_to_config_file>
make oldconfig
make menuconfig (if you need to change something)
make bzImage
make modules
make modules_install

# in the following lines replace "version" with the actual kernel
version you're compiling.
cp -a .config /boot/config-version
cp -a System.map /boot/System.map-version
cp -a arch/x86/boot/bzImage /boot/vmlinuz-version

# And then generate initrd/initramfs image for your dom0 kernel,
example for Fedora/RHEL/CentOS:
mkinitrd -f /boot/initrd-version.img version

Thanks.



---
*David Gonzalez H.*
DGHVoIP - Linux Server Administration - OpenVPN - Virtualization Support
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Proud Linux User #294661
... The world is divided into 10 kinds of people, who know binary and those
not ...



On Fri, Dec 3, 2010 at 5:50 PM, Konrad Rzeszutek Wilk <
konrad.wilk@oracle.com> wrote:

> On Sat, Dec 04, 2010 at 12:26:06AM +0200, Pasi Kärkkäinen wrote:
> > On Fri, Dec 03, 2010 at 04:29:45PM -0500, David Gonzalez wrote:
> > >    Hi,
> > >
> > >    I'm using CentOS 5.5 x64 and installed xen 4.0.1 with stock centos
> > >    2.6.18-194.26.1.el5xen kernel and initially it's working flawlesly,
> but I
> > >    want/need to use the pv_ops dom0 kernel, so I followed instructions
> from
> > >    this blog
> > >    [1]
> http://ppadala.net/blog/2010/09/how-to-setup-xen4-and-pvops-2-6-32-x-on-centos-5-5-using-gitco-repository/
>
> > >
> > >    I bult the kernel correclty and no errors showed up but when I try
> to boot
>
> Were there any errors when you did a make install? Such as these:
>
> WARNING: No module ehci-hcd found for kernel 2.6.31.6-0.0.pvops_3.x86_64,
> continuing anyway
> WARNING: No module ohci-hcd found for kernel 2.6.31.6-0.0.pvops_3.x86_64,
> continuing anyway
> WARNING: No module uhci-hcd found for kernel 2.6.31.6-0.0.pvops_3.x86_64,
> continuing anyway
> WARNING: No module ata_piix found for kernel 2.6.31.6-0.0.pvops_3.x86_64,
> continuing anyway
>
>

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Re: xen 4.0.1 from gitco + Kernel Dom0 from git won'¡t start

[Konrad Rzeszutek Wilk]

On Fri, Dec 03, 2010 at 05:58:23PM -0500, David Gonzalez wrote:
> Hi,
> 
> Yeah, there wre lots of them so I just did mkinitrd --builton=ohci ... and

You probably missed your storage driver then:
http://wiki.xensource.com/xenwiki/2.6.18-to-2.6.31-and-higher


> all modules that it said it couldn't find as reading on the tutorialas it
> said that it was safe tyo ignore usb errors as they are built into the

USB ones are, but not if it is your driver for your SATA disk.

Re: [Xen-devel] xen 4.0.1 from gitco + Kernel Dom0 from git won'¡t start

[David Gonzalez]

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On Fri, Dec 3, 2010 at 6:13 PM, Konrad Rzeszutek Wilk <
konrad.wilk@oracle.com> wrote:

> On Fri, Dec 03, 2010 at 05:58:23PM -0500, David Gonzalez wrote:
> > Hi,
> >
> > Yeah, there wre lots of them so I just did mkinitrd --builton=ohci ...
> and
>
> You probably missed your storage driver then:
> http://wiki.xensource.com/xenwiki/2.6.18-to-2.6.31-and-higher
>
>
> > all modules that it said it couldn't find as reading on the tutorialas it
> > said that it was safe tyo ignore usb errors as they are built into the
>
> USB ones are, but not if it is your driver for your SATA disk.
>

Well in fact there's the problem I boot my CD from an external USB enclosure
with a 160GB HDD so I'm guessing that must be one of the issues, though I
don't exactly know the parameter to solve it when creating the initrd do i
use --preload= --builtin=

my lsmod looks like this. tho I stripped some ip_* and dm_* modules which
are no relevant

Module                  Size  Used by
loop                   48593  2
pciback                64977  0
netloop                40129  0
netbk                 130177  0 [permanent]
blktap                151653  6 [permanent]
blkbk                  56465  0 [permanent]
ipv6                  435617  20
xfrm_nalgo             43333  1 ipv6
bridge                 92145  0
scsi_dh                42177  1 dm_multipath
video                  53197  0
backlight              39873  1 video
sbs                    49921  0
power_meter            47053  0
i2c_ec                 38593  1 sbs
dell_wmi               37601  0
wmi                    41985  1 dell_wmi
button                 40545  0
battery                43849  0
asus_acpi              50917  0
ac                     38729  0
lp                     47121  0
sg                     70249  0
i2c_amd8111            39105  0
i2c_amd756             40389  0
i2c_core               56641  3 i2c_ec,i2c_amd8111,i2c_amd756
k8temp                 39105  0
k8_edac                50693  0
pcspkr                 36289  0
hwmon                  36553  2 power_meter,k8temp
tg3                   161225  0
amd_rng                36041  0
edac_mc                60321  1 k8_edac
parport_pc             62313  1
parport                73293  2 lp,parport_pc
serial_core            56385  0
shpchp                 70637  0
usb_storage           122529  2
sd_mod                 56513  3
scsi_mod              197209  4 scsi_dh,sg,usb_storage,sd_mod
ext3                  168657  5
jbd                    94513  1 ext3
uhci_hcd               57561  0
ohci_hcd               56437  0
ehci_hcd               66253  0

Also strange that after I build my kernel and try mkinitrd this shows up

[root@vmhost linux-2.6-xen]# mkinitrd --builtin=usb-storage
--preload=usb-storage --builtin=ohci_hcd --builtin=uhci-hcd
--builtin=ohci-hcd --builtin=ehci-hcd --preload=ohci_hcd --preload=ehci-hcd
--preload=ohci-hcd --preload=uhci-hcd -v -f /boot/initrd-2.6.32.26-dom0.img
2.6.32.26-dom0
Creating initramfs
module usb-storage assumed to be built in
module ohci_hcd assumed to be built in
module ehci-hcd assumed to be built in
module ohci-hcd assumed to be built in
module uhci-hcd assumed to be built in
module ehci-hcd assumed to be built in
module ohci-hcd assumed to be built in
module uhci-hcd assumed to be built in
Looking for deps of module ext3
Looking for driver for device sda2
Looking for deps of module usb:v152Dp2338d0100dc00dsc00dp00ic08isc06ip50:
usb-storage
module usb-storage assumed to be built in
Looking for deps of module
pci:v00001022d00007464sv0000161Fsd00003016bc0Csc03i10
module ohci_hcd assumed to be built in
Looking for deps of module
pci:v00001022d00007460sv00000000sd00000000bc06sc04i00: shpchp
Looking for deps of module shpchp
Looking for deps of module ide-disk
Looking for deps of module dm-mod
Looking for deps of module dm-mirror
Looking for deps of module dm-zero
Looking for deps of module dm-snapshot
Looking for deps of module dm-mem-cache
Looking for deps of module dm-region_hash
Looking for deps of module dm-message
Looking for deps of module dm-raid45
Using modules:
/lib/modules/2.6.32.26-dom0/kernel/drivers/pci/hotplug/shpchp.ko
/sbin/nash -> /tmp/initrd.L21873/bin/nash
/sbin/insmod.static -> /tmp/initrd.L21873/bin/insmod
copy from `/lib/modules/2.6.32.26-dom0/kernel/drivers/pci/hotplug/shpchp.ko'
[elf64-x86-64] to `/tmp/initrd.L21873/lib/shpchp.ko' [elf64-x86-64]
/sbin/lvm.static -> /tmp/initrd.L21873/bin/lvm
/sbin/dmraid.static -> /tmp/initrd.L21873/bin/dmraid
/sbin/kpartx.static -> /tmp/initrd.L21873/bin/kpartx
Adding module shpchp

And the image created sucessfully so I'll test and take the pic and get back
to you.

Thanks.

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Re: [Xen-devel] xen 4.0.1 from gitco + Kernel Dom0 from git won'¡t start

[David Gonzalez]

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Hi all,

here's a link to the booting process video, hope you can see what happens in
slow motion, I decided that pcis won't help too much so excuse me for the
light but that monitor is too old and abit darky.

http://www.youtube.com/watch?v=9euHCgB-DsU

It's rendering right now so let it catch it's breathe and thaks for
checking.


Thanks.

PS: I attach the pictures I took fo just the kernel panic

---
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not ...



On Fri, Dec 3, 2010 at 7:11 PM, David Gonzalez <info@dghvoip.com> wrote:

>
>
> On Fri, Dec 3, 2010 at 6:13 PM, Konrad Rzeszutek Wilk <
> konrad.wilk@oracle.com> wrote:
>
>> On Fri, Dec 03, 2010 at 05:58:23PM -0500, David Gonzalez wrote:
>> > Hi,
>> >
>> > Yeah, there wre lots of them so I just did mkinitrd --builton=ohci ...
>> and
>>
>> You probably missed your storage driver then:
>> http://wiki.xensource.com/xenwiki/2.6.18-to-2.6.31-and-higher
>>
>>
>> > all modules that it said it couldn't find as reading on the tutorialas
>> it
>> > said that it was safe tyo ignore usb errors as they are built into the
>>
>> USB ones are, but not if it is your driver for your SATA disk.
>>
>
> Well in fact there's the problem I boot my CD from an external USB
> enclosure with a 160GB HDD so I'm guessing that must be one of the issues,
> though I don't exactly know the parameter to solve it when creating the
> initrd do i use --preload= --builtin=
>
> my lsmod looks like this. tho I stripped some ip_* and dm_* modules which
> are no relevant
>
> Module                  Size  Used by
> loop                   48593  2
> pciback                64977  0
> netloop                40129  0
> netbk                 130177  0 [permanent]
> blktap                151653  6 [permanent]
> blkbk                  56465  0 [permanent]
> ipv6                  435617  20
> xfrm_nalgo             43333  1 ipv6
> bridge                 92145  0
> scsi_dh                42177  1 dm_multipath
> video                  53197  0
> backlight              39873  1 video
> sbs                    49921  0
> power_meter            47053  0
> i2c_ec                 38593  1 sbs
> dell_wmi               37601  0
> wmi                    41985  1 dell_wmi
> button                 40545  0
> battery                43849  0
> asus_acpi              50917  0
> ac                     38729  0
> lp                     47121  0
> sg                     70249  0
> i2c_amd8111            39105  0
> i2c_amd756             40389  0
> i2c_core               56641  3 i2c_ec,i2c_amd8111,i2c_amd756
> k8temp                 39105  0
> k8_edac                50693  0
> pcspkr                 36289  0
> hwmon                  36553  2 power_meter,k8temp
> tg3                   161225  0
> amd_rng                36041  0
> edac_mc                60321  1 k8_edac
> parport_pc             62313  1
> parport                73293  2 lp,parport_pc
> serial_core            56385  0
> shpchp                 70637  0
> usb_storage           122529  2
> sd_mod                 56513  3
> scsi_mod              197209  4 scsi_dh,sg,usb_storage,sd_mod
> ext3                  168657  5
> jbd                    94513  1 ext3
> uhci_hcd               57561  0
> ohci_hcd               56437  0
> ehci_hcd               66253  0
>
> Also strange that after I build my kernel and try mkinitrd this shows up
>
> [root@vmhost linux-2.6-xen]# mkinitrd --builtin=usb-storage
> --preload=usb-storage --builtin=ohci_hcd --builtin=uhci-hcd
> --builtin=ohci-hcd --builtin=ehci-hcd --preload=ohci_hcd --preload=ehci-hcd
> --preload=ohci-hcd --preload=uhci-hcd -v -f /boot/initrd-2.6.32.26-dom0.img
> 2.6.32.26-dom0
> Creating initramfs
> module usb-storage assumed to be built in
> module ohci_hcd assumed to be built in
> module ehci-hcd assumed to be built in
> module ohci-hcd assumed to be built in
> module uhci-hcd assumed to be built in
> module ehci-hcd assumed to be built in
> module ohci-hcd assumed to be built in
> module uhci-hcd assumed to be built in
> Looking for deps of module ext3
> Looking for driver for device sda2
> Looking for deps of module usb:v152Dp2338d0100dc00dsc00dp00ic08isc06ip50:
> usb-storage
> module usb-storage assumed to be built in
> Looking for deps of module
> pci:v00001022d00007464sv0000161Fsd00003016bc0Csc03i10
> module ohci_hcd assumed to be built in
> Looking for deps of module
> pci:v00001022d00007460sv00000000sd00000000bc06sc04i00: shpchp
> Looking for deps of module shpchp
> Looking for deps of module ide-disk
> Looking for deps of module dm-mod
> Looking for deps of module dm-mirror
> Looking for deps of module dm-zero
> Looking for deps of module dm-snapshot
> Looking for deps of module dm-mem-cache
> Looking for deps of module dm-region_hash
> Looking for deps of module dm-message
> Looking for deps of module dm-raid45
> Using modules:
> /lib/modules/2.6.32.26-dom0/kernel/drivers/pci/hotplug/shpchp.ko
> /sbin/nash -> /tmp/initrd.L21873/bin/nash
> /sbin/insmod.static -> /tmp/initrd.L21873/bin/insmod
> copy from
> `/lib/modules/2.6.32.26-dom0/kernel/drivers/pci/hotplug/shpchp.ko'
> [elf64-x86-64] to `/tmp/initrd.L21873/lib/shpchp.ko' [elf64-x86-64]
> /sbin/lvm.static -> /tmp/initrd.L21873/bin/lvm
> /sbin/dmraid.static -> /tmp/initrd.L21873/bin/dmraid
> /sbin/kpartx.static -> /tmp/initrd.L21873/bin/kpartx
> Adding module shpchp
>
> And the image created sucessfully so I'll test and take the pic and get
> back to you.
>
> Thanks.
>

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Re: [Xen-devel] xen 4.0.1 from gitco + Kernel Dom0 from git won'¡t start

[David Gonzalez]

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On Fri, Dec 3, 2010 at 5:26 PM, Pasi Kärkkäinen <pasik@iki.fi> wrote:

> On Fri, Dec 03, 2010 at 04:29:45PM -0500, David Gonzalez wrote:
> >    Hi,
> >
> >    I'm using CentOS 5.5 x64 and installed xen 4.0.1 with stock centos
> >    2.6.18-194.26.1.el5xen kernel and initially it's working flawlesly,
> but I
> >    want/need to use the pv_ops dom0 kernel, so I followed instructions
> from
> >    this blog
> >    [1]
> http://ppadala.net/blog/2010/09/how-to-setup-xen4-and-pvops-2-6-32-x-on-centos-5-5-using-gitco-repository/
> >
> >    I bult the kernel correclty and no errors showed up but when I try to
> boot
> >    with the new kernel a panic shows and then the machine reboots into a
> >    cycle I don't have serial console where to log kernel messages and as
> the
> >    machine reboots I cannot take a note of what shows up, my grub.conf
> liooks
> >    like this:
> >
> >    title        pv_ops dom0 (2.6.32.26)
> >    root       (hd0,0)
> >    kernel    /xen.gz-4.0.1 dom0_mem=512M loglvl=all guest_loglvl=all
>
> Try adding "noreboot lapic=debug apic_verbosity=debug apic=debug iommu=off"
> to xen.gz line.
>
> >    module  /vmlinuz-2.6.32.26-dom0 ro root=/dev/vhost/root
> earlyprintk=xen
> >    nomodeset selinux=0
>
> Also add "initcall_debug debug loglevel=10" to the vmlinuz line.
>
> >    module       /initrd-2.6.32.26-dom0.img
> >
> >    If you can guide me on how to provide you with more informatio I'd be
> very
> >    happy as this last step has always goven me this results.
> >
>
> Hopefully those help.
>
> -- Pasi
>
> Done, as I'm just compiling another kernel after it finishes I'll post the
results.

Is there any centos-frienly or centos working .config file I can use. as  a
note I used this
http://pasik.reaktio.net/xen/pv_ops-dom0-debug/config-2.6.32.25-pvops-dom0-xen-stable-x86_64from
"Xen paravirt_ops for upstream Linux kernel"Sorry for the big fonts

Thanks again

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Re: [Xen-devel] xen 4.0.1 from gitco + Kernel Dom0 from git won'¡t start

[David Gonzalez]

[-- Attachment #1.1: Type: text/plain, Size: 2614 bytes --]

Hi,

SO guyes, any idea on what could be causing my system ro freeze like showed
on the video?.

Thanks.



---
*David Gonzalez H.*
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... The world is divided into 10 kinds of people, who know binary and those
not ...



On Fri, Dec 3, 2010 at 7:43 PM, David Gonzalez <info@dghvoip.com> wrote:

>
>
> On Fri, Dec 3, 2010 at 5:26 PM, Pasi Kärkkäinen <pasik@iki.fi> wrote:
>
>> On Fri, Dec 03, 2010 at 04:29:45PM -0500, David Gonzalez wrote:
>> >    Hi,
>> >
>> >    I'm using CentOS 5.5 x64 and installed xen 4.0.1 with stock centos
>> >    2.6.18-194.26.1.el5xen kernel and initially it's working flawlesly,
>> but I
>> >    want/need to use the pv_ops dom0 kernel, so I followed instructions
>> from
>> >    this blog
>> >    [1]
>> http://ppadala.net/blog/2010/09/how-to-setup-xen4-and-pvops-2-6-32-x-on-centos-5-5-using-gitco-repository/
>> >
>> >    I bult the kernel correclty and no errors showed up but when I try to
>> boot
>> >    with the new kernel a panic shows and then the machine reboots into a
>> >    cycle I don't have serial console where to log kernel messages and as
>> the
>> >    machine reboots I cannot take a note of what shows up, my grub.conf
>> liooks
>> >    like this:
>> >
>> >    title        pv_ops dom0 (2.6.32.26)
>> >    root       (hd0,0)
>> >    kernel    /xen.gz-4.0.1 dom0_mem=512M loglvl=all guest_loglvl=all
>>
>> Try adding "noreboot lapic=debug apic_verbosity=debug apic=debug
>> iommu=off" to xen.gz line.
>>
>> >    module  /vmlinuz-2.6.32.26-dom0 ro root=/dev/vhost/root
>> earlyprintk=xen
>> >    nomodeset selinux=0
>>
>> Also add "initcall_debug debug loglevel=10" to the vmlinuz line.
>>
>> >    module       /initrd-2.6.32.26-dom0.img
>> >
>> >    If you can guide me on how to provide you with more informatio I'd be
>> very
>> >    happy as this last step has always goven me this results.
>> >
>>
>> Hopefully those help.
>>
>> -- Pasi
>>
>> Done, as I'm just compiling another kernel after it finishes I'll post the
> results.
>
> Is there any centos-frienly or centos working .config file I can use. as  a
> note I used this
> http://pasik.reaktio.net/xen/pv_ops-dom0-debug/config-2.6.32.25-pvops-dom0-xen-stable-x86_64from
> "Xen paravirt_ops for upstream Linux kernel"Sorry for the big fonts
>
> Thanks again
>

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Re: [Xen-devel] xen 4.0.1 from gitco + Kernel Dom0 from git won'¡t start

[Konrad Rzeszutek Wilk]

On Sat, Dec 04, 2010 at 12:55:51PM -0500, David Gonzalez wrote:
> Hi,
> 
> SO guyes, any idea on what could be causing my system ro freeze like showed
> on the video?.

The failure looks to be ballon driver adding pages and then failing on its head
when it hits something bad.

Can you try to remove the dom0_mem=512M and see what happens? Why did you 
add that in there?

Re: [Xen-devel] xen 4.0.1 from gitco + Kernel Dom0 from git won'¡t start

[David Gonzalez]

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On Sun, Dec 5, 2010 at 12:45 PM, Konrad Rzeszutek Wilk <
konrad.wilk@oracle.com> wrote:

> On Sat, Dec 04, 2010 at 12:55:51PM -0500, David Gonzalez wrote:
> > Hi,
> >
> > SO guyes, any idea on what could be causing my system ro freeze like
> showed
> > on the video?.
>
> The failure looks to be ballon driver adding pages and then failing on its
> head
> when it hits something bad.
>
> Can you try to remove the dom0_mem=512M and see what happens? Why did you
> add that in there?
>


Done, I removed it and the panic remains, I'm sorry I cannot provide anymore
info, as I said there's no way for me to watch what happens before the
panic, it goes by too fast.

By the way I Was checking the wiki on the serial console but it always
requires some sorta hardware to work, either a null modem cable which I
could try doing or the management card for the server, but as another
question, is there anyway to log that error like with dmesg or something for
me to check when I boot the working kernel like piping the output to a file
or something?.

Thanks


---
*David Gonzalez H.*
DGHVoIP - Linux Server Administration - OpenVPN - Virtualization Support
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USA: +1 (347) 414-8499
COL: +57(1)289-1168
          +57(4)247-0985
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... The world is divided into 10 kinds of people, who know binary and those
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Re: xen 4.0.1 from gitco + Kernel Dom0 from git won'¡t start

[Konrad Rzeszutek Wilk]

> > Can you try to remove the dom0_mem=512M and see what happens? Why did you
> > add that in there?
> >
> 
> 
> Done, I removed it and the panic remains, I'm sorry I cannot provide anymore

Bummer.

> info, as I said there's no way for me to watch what happens before the
> panic, it goes by too fast.
> 
> By the way I Was checking the wiki on the serial console but it always
> requires some sorta hardware to work, either a null modem cable which I
> could try doing or the management card for the server, but as another
> question, is there anyway to log that error like with dmesg or something for
> me to check when I boot the working kernel like piping the output to a file
> or something?.

Not at that early stage. I fear to get close to this you would need to get
PCI serial card so that we can figure out what is happening.

Re: [Xen-devel] xen 4.0.1 from gitco + Kernel Dom0 from git won'¡t start

[David Gonzalez]

[-- Attachment #1.1: Type: text/plain, Size: 1569 bytes --]

On Mon, Dec 6, 2010 at 1:35 PM, Konrad Rzeszutek Wilk <
konrad.wilk@oracle.com> wrote:

> > > Can you try to remove the dom0_mem=512M and see what happens? Why did
> you
> > > add that in there?
> > >
> >
> >
> > Done, I removed it and the panic remains, I'm sorry I cannot provide
> anymore
>
> Bummer.
>
> > info, as I said there's no way for me to watch what happens before the
> > panic, it goes by too fast.
> >
> > By the way I Was checking the wiki on the serial console but it always
> > requires some sorta hardware to work, either a null modem cable which I
> > could try doing or the management card for the server, but as another
> > question, is there anyway to log that error like with dmesg or something
> for
> > me to check when I boot the working kernel like piping the output to a
> file
> > or something?.
>
> Not at that early stage. I fear to get close to this you would need to get
> PCI serial card so that we can figure out what is happening.
>

Well this is a rackable systems server and it has an integrated serial port,
so what should I do to get that working, bear in mind am a bit far from the
server, (other room), so any indication would be appreciated.

Thanks again.

---
*David Gonzalez H.*
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USA: +1 (347) 414-8499
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          +57(4)247-0985
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Re: xen 4.0.1 from gitco + Kernel Dom0 from git won'¡t start

[Konrad Rzeszutek Wilk]

On Mon, Dec 06, 2010 at 01:39:03PM -0500, David Gonzalez wrote:
> On Mon, Dec 6, 2010 at 1:35 PM, Konrad Rzeszutek Wilk <
> konrad.wilk@oracle.com> wrote:
> 
> > > > Can you try to remove the dom0_mem=512M and see what happens? Why did
> > you
> > > > add that in there?
> > > >
> > >
> > >
> > > Done, I removed it and the panic remains, I'm sorry I cannot provide
> > anymore
> >
> > Bummer.
> >
> > > info, as I said there's no way for me to watch what happens before the
> > > panic, it goes by too fast.
> > >
> > > By the way I Was checking the wiki on the serial console but it always
> > > requires some sorta hardware to work, either a null modem cable which I
> > > could try doing or the management card for the server, but as another
> > > question, is there anyway to log that error like with dmesg or something
> > for
> > > me to check when I boot the working kernel like piping the output to a
> > file
> > > or something?.
> >
> > Not at that early stage. I fear to get close to this you would need to get
> > PCI serial card so that we can figure out what is happening.
> >
> 
> Well this is a rackable systems server and it has an integrated serial port,
> so what should I do to get that working, bear in mind am a bit far from the
> server, (other room), so any indication would be appreciated.

http://wiki.xen.org/xenwiki/XenSerialConsole