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Re: [Xen-users] propagating blktap partition changes

To: Maarten Vanraes <maarten@xxxxx>
Subject: Re: [Xen-users] propagating blktap partition changes
From: Pasi Kärkkäinen <pasik@xxxxxx>
Date: Thu, 5 Feb 2009 14:05:01 +0200
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On Thu, Feb 05, 2009 at 11:52:56AM +0100, Maarten Vanraes wrote:
> Hi,
> I have 2 questions:
>  1. I was not able to let the guest know that the partition size was changed.
>  2. I was not able to use block-attach with the same backendfile to different 
> machines (eg: guest + dom0)
> I've read that block-reconfigure could've been used for this, except that it 
> wasn't designed to work for filebased vbd on PVs, only for switching CDROMs 
> in HVM
> When you use a local disk on a machine, you can use fdisk to change 
> partitions 
> and sizes, it then rereads the partition table to reflect those changes.
> Since i'm not using a disk, but directly partitions, isn't it possible to 
> just 
> give a signal to the guest that it should recheck the partition? can be from 
> the guest itself.
> Some kind of workaround?

Sorry, this is not possible.

There's a a feature request about it for Xen 3.4. 

Dunno if it will be implemented.

-- Pasi

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