Re: [Xen-users] Xen block device online resizing

["Fajar A. Nugraha" <list@xxxxxxxxx>]

On Thu, Jun 28, 2012 at 3:31 AM, sstan <sstanisi@xxxxxxxxx> wrote:
> Hi,
>
>
> I'm using SLES11 sp2 both on Dom0 and DomU. The kernel is > 3.0 and Xen 4.1
> is installed.
>
> Online resizing has become a feature not too long ago with XEN. It allows
> one to expand the disk's capacity without having to restart DomU.
>
> I tried to use that feature, but when I append memory to my virtual block
> device in Dom0, it is not registered by DomU.

You can't "append memory to my virtual block device". Memory is not a
block device.

> I tried to load some modules
> with modprobe, but it didn't work.

"try some stuff at random even if it's completely unrelated and pray
that it works"?

> Has anyone been able to achieve an online
> resize?

Yes.

> I should mention that modprobe in DomU doesn't "see" the additional
> capacity.

Again, "try some stuff at random even if it's completely unrelated and
pray that it works"?

Simply put, just look at domU's console and syslog. If it shows a
block device size change, then your system supports it. If not, then
one of the components (either hypervisor or kernel) doesn't support
it.

-- 
Fajar

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