[Xen-users] Xen 4.0 and xen-sources-2.6.34

[Mike Fröhner <mike.froehner@xxxxxxxxx>]

Hello Guys,

i am trying to upgrade my server from xen-3.4.2 and 
xen-sources-2.6.31-r11 on a gentoo-linux to xen-4.0.0 and xen-sources-2.6.34
But first of all I have an important question:

What doesn't xen accept my kernel as Xen Guestkernel with configured 
CONFIG_XEN_UNPRIVILEGED_GUEST=y. I unterstood that just the domain0 is 
the privileged guest and the other domains (guests) are unprivileged 
guests. Would be nice if anybody could explain my Problem
Okay back to upgrade problem. I tried many different things.

First I installed via emerge the new xen-sources and took the old 
.config from 2.6.31-r11 and made oldconfig. While compiling the new 
kernel for domain0 I installed xen-4.0.0. Everythings went fine, reboot 
was ok (no errors, no warning, no kernel panic). After rebooting i tried 
to start up an old guest machine running a 2.6.31-r11 kernel. This did 
not work.
Ok, I thought I need to compile a new guest kernel. I copied the old 
guest .config from 2.6.31-r11 and to new directory (i am using for each 
kernel another outputdirectory for compiling). I compiled.
So now Host and Guest got both 2.6.34-kernel and host was running 
xen-4.0.0. I thought a reboot wouldn't be wasted time, I did.
Now i tried again to start my guest. And at this point i do have the 
problem. I got 2 different boot failures. First is that there kernel 
could find my guest root partition (VFS ERROR). And the second is 
obviously no real error. I try to start via xm create -c [config-file] 
and it start and after some miliseconds it stops and goes out of the 
console. Just this a warning: (read it at the end of my mail)
Does anybody have experience this gentoo and xen with the new kernel?

I am looking forward to an answer.


Kind Regards,
Mike Fröhner


WARNING MESSAGE:


[    0.189872] ------------[ cut here ]------------
[    0.189872] WARNING: at 
/usr/src/linux-2.6.34-xen/fs/proc/generic.c:825 
remove_proc_entry+0xe9/0x25b()
[    0.189872] name 'fan'
[    0.189872] Pid: 1, comm: swapper Not tainted 2.6.34-xen #3
[    0.189872] Call Trace:
[    0.189872]  [<ffffffff80207219>] ? remove_proc_entry+0xe9/0x25b
[    0.189872]  [<ffffffff8012c3fa>] warn_slowpath_common+0x72/0x9f
[    0.189872]  [<ffffffff8012c49c>] warn_slowpath_fmt+0x64/0x66
[    0.189872]  [<ffffffff801b4db0>] ? virt_to_head_page+0x15/0x2f
[    0.189872]  [<ffffffff8020701f>] ? __xlate_proc_name+0x3d/0xbf
[    0.189872]  [<ffffffff808e0786>] ? acpi_fan_init+0x0/0x32
[    0.189872]  [<ffffffff80207219>] remove_proc_entry+0xe9/0x25b
[    0.189872]  [<ffffffff808e0730>] ? acpi_button_init+0x0/0x56
[    0.189872]  [<ffffffff808e0786>] ? acpi_fan_init+0x0/0x32
[    0.189872]  [<ffffffff808e07af>] acpi_fan_init+0x29/0x32
[    0.189872]  [<ffffffff80102060>] do_one_initcall+0x5a/0x16f
[    0.189872]  [<ffffffff808c35e6>] kernel_init+0x152/0x1dc
[    0.189872]  [<ffffffff80104ce4>] kernel_thread_helper+0x4/0x10
[    0.189872]  [<ffffffff808c3494>] ? kernel_init+0x0/0x1dc
[    0.189872]  [<ffffffff80104ce0>] ? kernel_thread_helper+0x0/0x10
[    0.189872] ---[ end trace 101cb71362e080d1 ]---




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