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From Marcus Sorensen <>
Subject Re: [DISCUSS] resizeVolume
Date Wed, 09 Jan 2013 16:32:53 GMT
Ok, great. If I don't hear any other responses by tomorrow, I'll assume
that no reply == no problem, and I'll go ahead and merge this into master.
I'll leave it up to you to add in the RBD portion when you get the libvirt
bindings in and have time to look at it.

On Wed, Jan 9, 2013 at 2:00 AM, Wido den Hollander <> wrote:

> Hi,
> On 01/08/2013 07:55 PM, Marcus Sorensen wrote:
>>   Guys,
>>     I've pushed this as a new branch called 'resizevolume', in order to
>> collaborate with a few of you on it. I have several questions on how to
>> proceed, due to refactoring efforts. I'm hoping that the experts in those
>> efforts can collaborate.
>> 1) Wido, would you be interested in looking at adding RBD resize to
>> LibvirtComputingResource? The resize for CLVM and QCOW2 is done via
>> scripts/storage/qcow2/** at the moment, since the libvirt
>> bindings won't support volBlockResize until you get 0.5.0 out (and even
>> then I'm not sure if it will support anything more than just informing the
>> hypervisor/guest of the change, which is also in the script).
> No problem! I'll look at that. But I'll need libvirt-java for this. I'll
> try to get those resize features for libvirt-java in version 0.5.0
> Wido
>  2) I'm not sure exactly how this will be affected by the storage refactor,
>> but I'm sure it will be. I looked for examples in the createVolume on
>> javelin, but it seems that the storage refactor is still early on, and per
>> Edison's update only works for a few template commands at the moment. I
>> thought it best to get this in as a fully fleged member of the storage API
>> so that when the work is done on the storage commands, this will get
>> looked
>> at as well. So if everything looks good otherwise, I'd like to not block
>> on
>> the storage refactor unless this is just going to be scrapped when that
>> comes along.
>> 3) I've implemented resize for Xen, but only tested with local storage SR.
>> The SR in devcloud doesn't seem to support online resize, and I'm not
>> familiar enough with the Xen setup to really figure out if that's just a
>> byproduct of how the SR was created, whether it's a Xen limitation in
>> DevCloud, or what. If someone more familiar with Xen wants to take a peek
>> it would be appreciated, however I'm not really considering it a blocker
>> if
>> nobody does. For now resize works offline (or with data disk detached) and
>> fails with warning that VM needs to be stopped or data disk detached.
>> 4) Can someone who is working with the api refactoring take this into
>> account? I think I'd prefer it go in before the refactor, or if it doesn't
>> that someone help me make any modifications necessary, so that it's not
>> broken at any point in master.

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