[Xen-usersl] Xen 2.6.18.8 Kernel tree on Ubuntu Kamic

[TEJE]

All,

Recently I have tried Xen 3.4.1 (even xen-unstable.hg) and Linux
2.6.18.8 tree on new ubuntyu karmic koala.
I have tried this combination on different machine AMD64, intel i386,
but every time I boot process is stop at

"Waiting for root file system" , After some time the promt drops to
initramfs shell.
I am sure the problem is not due to NOT selecting prooper SATA
controller or something ike that.....

I have tried similar hardware configuration with Xen on Jaunty it
works without any problem.
I am just wondering why it is refusing to work on Karmic, possible reasons.
1. gcc 4.4
2. make version
3. your thoughts please????

I have tried pvops kernel, it works but I need 2.6.18.8 tree so any thoughts???



thanks
-tej

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[Simon Horman]

On Sun, Nov 08, 2009 at 11:14:40AM +0530, Tej wrote:

> All,
>
> Recently I have tried Xen 3.4.1 (even xen-unstable.hg) and Linux
> 2.6.18.8 tree on new ubuntyu karmic koala.
> I have tried this combination on different machine AMD64, intel i386,
> but every time I boot process is stop at
>
> "Waiting for root file system" , After some time the promt drops to
> initramfs shell.
> I am sure the problem is not due to NOT selecting prooper SATA
> controller or something ike that.....
>
> I have tried similar hardware configuration with Xen on Jaunty it
> works without any problem.
> I am just wondering why it is refusing to work on Karmic, possible reasons.
> 1. gcc 4.4
> 2. make version
> 3. your thoughts please????
>
> I have tried pvops kernel, it works but I need 2.6.18.8 tree so any thoughts???

It sounds a lot like the correct modules aren't being loaded up for
2.8.18.8 by the initramfs (that was presumably created while
running a much newer kernel). When you drop into the initramfs shell
can you see the root device?


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[TEJE]

On Sun, Nov 8, 2009 at 4:17 PM, Simon Horman <horms@...> wrote:

> On Sun, Nov 08, 2009 at 11:14:40AM +0530, Tej wrote:
>> All,
>>
>> Recently I have tried Xen 3.4.1 (even xen-unstable.hg) and Linux
>> 2.6.18.8 tree on new ubuntyu karmic koala.
>> I have tried this combination on different machine AMD64, intel i386,
>> but every time I boot process is stop at
>>
>> "Waiting for root file system" , After some time the promt drops to
>> initramfs shell.
>> I am sure the problem is not due to NOT selecting prooper SATA
>> controller or something ike that.....
>>
>> I have tried similar hardware configuration with Xen on Jaunty it
>> works without any problem.
>> I am just wondering why it is refusing to work on Karmic, possible reasons.
>> 1. gcc 4.4
>> 2. make version
>> 3. your thoughts please????
>>
>> I have tried pvops kernel, it works but I need 2.6.18.8 tree so any thoughts???
>
> It sounds a lot like the correct modules aren't being loaded up for
> 2.8.18.8 by the initramfs (that was presumably created while
> running a much newer kernel). When you drop into the initramfs shell
> can you see the root device?

Thats the issue, boot process tries to detect root filesystem, but it
can't. Some reasons for this I know are:
1. Storage controllers are not in kernel and initramfs
2. Pointing wront root device

I could say that both of the problem does not exist.
Now question why configuration worked on jaunty and why not in karmic??


>
>

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[Pasi Kärkkäinen]

On Sun, Nov 08, 2009 at 11:14:40AM +0530, Tej wrote:
> All,
>
> Recently I have tried Xen 3.4.1 (even xen-unstable.hg) and Linux
> 2.6.18.8 tree on new ubuntyu karmic koala.
> I have tried this combination on different machine AMD64, intel i386,
> but every time I boot process is stop at
>
> "Waiting for root file system" , After some time the promt drops to
> initramfs shell.

Well.. it either means the driver for your SATA controller is not
loaded, the driver is misbehaving or the driver is too old to actually
support the controller.

> I am sure the problem is not due to NOT selecting prooper SATA
> controller or something ike that.....
>

You should enable/configure serial console and capture the full xen and
dom0 kernel boot logs so we can see what's wrong..

that's the easiest way to troubleshoot the problem.

> I have tried similar hardware configuration with Xen on Jaunty it
> works without any problem.
> I am just wondering why it is refusing to work on Karmic, possible reasons.
> 1. gcc 4.4
> 2. make version
> 3. your thoughts please????
>
> I have tried pvops kernel, it works but I need 2.6.18.8 tree so any thoughts???
>

Any particular reason for that?

Have you considered the novell/opensuse forward-ported 2.6.18 patches for 2.6.3x?

http://wiki.xensource.com/xenwiki/XenDom0Kernels

-- Pasi


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[TEJE]

On Sun, Nov 8, 2009 at 5:07 PM, Pasi Kärkkäinen <pasik@...> wrote:

> On Sun, Nov 08, 2009 at 11:14:40AM +0530, Tej wrote:
>> All,
>>
>> Recently I have tried Xen 3.4.1 (even xen-unstable.hg) and Linux
>> 2.6.18.8 tree on new ubuntyu karmic koala.
>> I have tried this combination on different machine AMD64, intel i386,
>> but every time I boot process is stop at
>>
>> "Waiting for root file system" , After some time the promt drops to
>> initramfs shell.
>
> Well.. it either means the driver for your SATA controller is not
> loaded, the driver is misbehaving or the driver is too old to actually
> support the controller.

Fine.

>
>> I am sure the problem is not due to NOT selecting prooper SATA
>> controller or something ike that.....
>>
>
> You should enable/configure serial console and capture the full xen and
> dom0 kernel boot logs so we can see what's wrong..

I will try get boot logs ASAP, however i guess netconsole is a better option.

>
> that's the easiest way to troubleshoot the problem.
>
>> I have tried similar hardware configuration with Xen on Jaunty it
>> works without any problem.
>> I am just wondering why it is refusing to work on Karmic, possible reasons.
>> 1. gcc 4.4
>> 2. make version
>> 3. your thoughts please????
>>
>> I have tried pvops kernel, it works but I need 2.6.18.8 tree so any thoughts???
>>
>
> Any particular reason for that?
>
> Have you considered the novell/opensuse forward-ported 2.6.18 patches for 2.6.3x?
>
> http://wiki.xensource.com/xenwiki/XenDom0Kernels

Ok, I think I am not clearly spelling out the problem.

1. Xen with Linux 2.6.18.8 on AMD64 hardware. OS: Ubuntu Jaunty.
Everything is working fine.
2. Xen with Linux 2.6.18.8 on *Same* AMD64 hardware. OS: Ubuntu
Karmic. Boot process fails with error Waiting for filesystem


Difference between 1 and 2 are *only* OS. Nothing else same
configuration, same Hardware, same Kernel (however i didn't check with
particular revision).

Why problem exist, it could be GCC and Make new version??? or ???

Thanks
-tej





>
> -- Pasi
>
>

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[Pasi Kärkkäinen]

On Sun, Nov 08, 2009 at 05:48:58PM +0530, Tej wrote:

> On Sun, Nov 8, 2009 at 5:07 PM, Pasi Kärkkäinen <pasik@...> wrote:
> > On Sun, Nov 08, 2009 at 11:14:40AM +0530, Tej wrote:
> >> All,
> >>
> >> Recently I have tried Xen 3.4.1 (even xen-unstable.hg) and Linux
> >> 2.6.18.8 tree on new ubuntyu karmic koala.
> >> I have tried this combination on different machine AMD64, intel i386,
> >> but every time I boot process is stop at
> >>
> >> "Waiting for root file system" , After some time the promt drops to
> >> initramfs shell.
> >
> > Well.. it either means the driver for your SATA controller is not
> > loaded, the driver is misbehaving or the driver is too old to actually
> > support the controller.
>
> Fine.
>
> >
> >> I am sure the problem is not due to NOT selecting prooper SATA
> >> controller or something ike that.....
> >>
> >
> > You should enable/configure serial console and capture the full xen and
> > dom0 kernel boot logs so we can see what's wrong..
>
> I will try get boot logs ASAP, however i guess netconsole is a better option.
>

Netconsole cannot capture Xen hypervisor boot messages.. since it's only
activated later when dom0 Linux kernel is loaded.

> >
> > that's the easiest way to troubleshoot the problem.
> >
> >> I have tried similar hardware configuration with Xen on Jaunty it
> >> works without any problem.
> >> I am just wondering why it is refusing to work on Karmic, possible reasons.
> >> 1. gcc 4.4
> >> 2. make version
> >> 3. your thoughts please????
> >>
> >> I have tried pvops kernel, it works but I need 2.6.18.8 tree so any thoughts???
> >>
> >
> > Any particular reason for that?
> >
> > Have you considered the novell/opensuse forward-ported 2.6.18 patches for 2.6.3x?
> >
> > http://wiki.xensource.com/xenwiki/XenDom0Kernels
>
> Ok, I think I am not clearly spelling out the problem.
>
> 1. Xen with Linux 2.6.18.8 on AMD64 hardware. OS: Ubuntu Jaunty.
> Everything is working fine.
> 2. Xen with Linux 2.6.18.8 on *Same* AMD64 hardware. OS: Ubuntu
> Karmic. Boot process fails with error Waiting for filesystem
>
>
> Difference between 1 and 2 are *only* OS. Nothing else same
> configuration, same Hardware, same Kernel (however i didn't check with
> particular revision).
>
> Why problem exist, it could be GCC and Make new version??? or ???
>

Ok.

Maybe it's the different revision of dom0 kernel then? gcc/make
_shouldn't_ make any difference.. unless there are some compiler
specific bugs.

-- Pasi


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[Simon Horman]

On Sun, Nov 08, 2009 at 04:45:30PM +0530, Tej wrote:

> On Sun, Nov 8, 2009 at 4:17 PM, Simon Horman <horms@...> wrote:
> > On Sun, Nov 08, 2009 at 11:14:40AM +0530, Tej wrote:
> >> All,
> >>
> >> Recently I have tried Xen 3.4.1 (even xen-unstable.hg) and Linux
> >> 2.6.18.8 tree on new ubuntyu karmic koala.
> >> I have tried this combination on different machine AMD64, intel i386,
> >> but every time I boot process is stop at
> >>
> >> "Waiting for root file system" , After some time the promt drops to
> >> initramfs shell.
> >> I am sure the problem is not due to NOT selecting prooper SATA
> >> controller or something ike that.....
> >>
> >> I have tried similar hardware configuration with Xen on Jaunty it
> >> works without any problem.
> >> I am just wondering why it is refusing to work on Karmic, possible reasons.
> >> 1. gcc 4.4
> >> 2. make version
> >> 3. your thoughts please????
> >>
> >> I have tried pvops kernel, it works but I need 2.6.18.8 tree so any thoughts???
> >
> > It sounds a lot like the correct modules aren't being loaded up for
> > 2.8.18.8 by the initramfs (that was presumably created while
> > running a much newer kernel). When you drop into the initramfs shell
> > can you see the root device?
>
> Thats the issue, boot process tries to detect root filesystem, but it
> can't. Some reasons for this I know are:
> 1. Storage controllers are not in kernel and initramfs
> 2. Pointing wront root device

So the root device (e.g. /dev/sda1) exists when you get dumped
into the initramfs but it isn't being mounted by the kernel?

> I could say that both of the problem does not exist.
> Now question why configuration worked on jaunty and why not in karmic??

Possibly because the name of the relevant modules and/or the root device
has changed?


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[Thiago Camargo Martins Cordeiro]

Just to be sure... Are you using GRUB instead the new GRUB2... right?!

If you try to boot Xen with GRUB2, you will need to compile your kernel with built-in command line "hard coded" into your Linux kernel image.

2009/11/8 Tej <bewith.tej@...>

All,

Recently I have tried Xen 3.4.1 (even xen-unstable.hg) and Linux
2.6.18.8 tree on new ubuntyu karmic koala.
I have tried this combination on different machine AMD64, intel i386,
but every time I boot process is stop at

"Waiting for root file system" , After some time the promt drops to
initramfs shell.
I am sure the problem is not due to NOT selecting prooper SATA
controller or something ike that.....

I have tried similar hardware configuration with Xen on Jaunty it
works without any problem.
I am just wondering why it is refusing to work on Karmic, possible reasons.
1. gcc 4.4
2. make version
3. your thoughts please????

I have tried pvops kernel, it works but I need 2.6.18.8 tree so any thoughts???



thanks
-tej

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