Re: [Xen-devel] [PATCH] qemu-xen-3.4-testing: Fix read-only image file handling

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 08/06/2010 11:04, "Michal Novotny" <minovotn@xxxxxxxxxx> wrote:

> I also tried to decrease the memory for dom0 as advised on the list
> (using the `xm mem-set 0 2048`) but still the same result but I saw
> something in the qemu-dm log file about -vcpu-avail option is invalid:
> 
> # cat /var/log/xen/qemu-dm-rhel5-32fv.log
> domid: 1
> qemu: the number of cpus is 1
> /usr/lib64/xen/bin/qemu-dm: invalid option -- '-vcpu_avail'
> #

Stale qemu-dm binary hanging around, perhaps. I find that kind of thing
happens when trying out different version sof Xen on a single test system.
Either your new qemu-dm binary did not get installed, or it did but in a
different location to the stale one, and it happens that the stale one
dominates.

In particular, Xen 3.4 qemu does not support the -vcpu_avail cmdline option,
but 4.0 and 4.1 (unstable) do. And 4.0/4.1 xend depends on that.

 -- Keir



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