Re: [Xen-users] Re: [Xen-devel] Re: Writing a tool for Shared Persistent Windows Boot Image

["Jim Burnes" <jvburnes@xxxxxxxxx>]

Speaking of the XenSource 3.1.0 RPMs, I'd like to make a suggestion.  When you build the xen-kernel for those 3.1.0 RPMs, can you make sure that the loop device is built as a module?  By default the loop device is limited to 8 instances and when you build it into the kernel it makes it very difficult to change max_loop.

I tried adding it as a xen-kernel boot option in grub.conf, but as far as I can tell it's ignored when the loop device is compiled in the kernel.

For example, even though I added max_loop=16 to the boot options and modified the udev configuration to build 16 loop devices, every time xen does an 'losetup' on any device greater than loop7 it fails because the system doesn't think the device exists.

Just FYI.  This means I'll have to raise the limit by recompiling the whole kernel.

Jim Burnes

On 6/29/07, Jim Burnes < jvburnes@xxxxxxxxx> wrote:

Just as a side note, I'm running from the RHEL 5 3.1.0 RPMs distributed by XenSource.  I don't know if they include this fix.

Regards,

Jim Burnes

On 6/29/07, Andrew Warfield <andrew.warfield@xxxxxxxxxxxx> wrote:

If you can send some more details on the crash we should be able to
sort this out -- it's certainly something that has worked in the past.

a.

On 6/29/07, Daniel P. Berrange < berrange@xxxxxxxxxx> wrote:
> On Fri, Jun 29, 2007 at 07:38:47AM -0700, Andrew Warfield wrote:
> > This should have been fixed a few months ago:
> >
> > # HG changeset patch
> > # User wim@xxxxxxxxxxxx
> > # Date 1170895981 28800
> > # Node ID 6524e02edbeb8aebe65aa5400af4b09dfccb8729
> > # Parent  780f097b54c5f9161f7c6cf3f86b2bb72cc43587
> > [blktap] Allow HVM booting from blktap device(s)
> >
> > What problems are you seeing?
>
> Yeah I saw that and am still trying to track down why it isn't doing what it
> ought to. Basically I see the guest start & immediately quit/crash
>
> Dan.
> --
> |=- Red Hat, Engineering, Emerging Technologies, Boston.  +1 978 392 2496 -=|
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