Re: [Xen-users] intermittent domU issue: related to udev?

[Eric Lenio <eric@xxxxxxxxx>]

On Thu, May 14, 2009 at 05:35:32PM +0300, Pasi Kärkkäinen wrote:
> On Thu, May 14, 2009 at 10:17:30AM -0400, Eric Lenio wrote:
> > Here is a typical config for one of my domUs:
> > 
> > kernel = "/xen/vmlinuz-lincware-2.6.21-xenU"
> > memory = 1024
> > vif = [ 'bridge=xenbr0' ]
> > name = "lincware3"
> > disk = [
> >   'phy:vg-sda4/lincware3-xfs,sda,w',
> >   'phy:vg-sda4/lincware3-swap,sdb,w',
> > ]
> > root = "/dev/sda rw"
> > usb=0
> > 
> 
> Btw you shouldn't be using sda and sdb, you should be using xvda and xvdb.
> xvd = Xen Virtual Disk.
> 
> That sdX device naming thing is deprecated and should not be used anymore.
> 
> Also, why do you have the kernel in dom0? I find it a lot easier to have the
> kernel in the domU filesystem (use the kernel-xen provided by the distro),
> and use pygrub/pvgrub to load the kernel from the domU filesystem.
> 
> -- Pasi

Good to know about xvd.  I will switch over to that convention.  Do you have
reason to believe that this could be related to my original udev issue?  It
seems unrelated only because my domUs will work for several weeks, and at some
point I attempt to restart a domU but it does not seem to properly release
resources and the next domU I attempt to start (could be any of them) will
always fail with the mysterious "Error: Device 0 (vif) could not be connected.
Hotplug scripts not working" which you see everywhere in this list.

Why is my kernel in dom0?  No particular reason, it's just how things played
out as I built things.  I'm using gentoo for dom0 and I basically built my dom0
and domU kernels at the same time while following gentoo's guide.  In retrospect
I wish I had gone with prebuilt kernels, and I think I may eventually switch
over to Debian... my preference would be Ubuntu because I use those a lot
for my domUs but I have read that Ubuntu doesn't have the greatest support
for Xen.  Other distro recommendations are welcome if you have them...

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