Re: Problems with xen and linux 2.26.32 kernels for dom0

[Jia Rao <rickenrao@gmail.com>]

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Finally the 2.6.32 pvops dom0 booted with xen 4.0. However the xend can not
start.
I believe that is something related to the *evtchn*.
I compile the CONFIG_XEN_DEV_EVTCHN=y in kernel, so i donot need to load it.
When the dom0 booted, I can see there is a entry for evtchn in /dev/xen
along with gntdev.

But when xend starts, the evtchn in /dev/xen disappeared. and xend is not
properly started.
The error log in /var/log/xen/xend.log is the following:

[2010-06-18 10:51:35 4685] INFO (SrvDaemon:332) Xend Daemon started
[2010-06-18 10:51:35 4685] INFO (SrvDaemon:336) Xend changeset: unavailable.
[2010-06-18 10:51:35 4685] ERROR (SrvDaemon:349) Exception starting xend
((111, 'Connection refused'))

I am using a centos 5, which has an old udev. I tried to modified the udev
rules in /etc/udev/rules.d/xen-backend.rules and changed evtchn to
xen-evtchn. No luck.

Any ideas?

Thanks.

On Thu, Jun 17, 2010 at 9:08 AM, Konrad Rzeszutek Wilk <
konrad.wilk@oracle.com> wrote:

> > > > generated initrd, dom0 can not boot. I got the error: *unable to
> locate
> > > > IOAPIC for GSIx and mount: could not find filesystem: /dev/root*.
> > > > I enabled : CONFIG_SYSFS_DEPRECATED=y,  CONFIG_SYSFS_DEPRECATED_V2=y
> and
> > > > tried to use root=/dev/sdax or root=LABEL=/. No luck.
> > >
> > > You did follow the the Wiki:
> > > http://wiki.xensource.com/xenwiki/2.6.18-to-2.6.31-and-higher
> > >
> > > and made sure you had the right SATA drivers compiled in? They changed
> > > their names from .18 to .31-and-higher
> > > >
> > >
> >
> > I tried the script with the pvops, the dom0 still cannt boot. How can I
> > check if other modules have changed the name besides ata_piix ?
>
>
> find /sys/class/scsi_host/host*/proc_name | xargs cat
>
> If the name of the module exists in 2.6.32, OK, otherwise use Google.
>
> You did also use the 'new-kernel-package' to insert your new kernel
> and/or ran 'mkinitrd' (pre FC12) or 'dracut' (past FC12).
>

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