Open Stack

Hello All,

An update on the use of the qemu-nbd/kpartx based solution to inject files into VM images:

After some more testing it has turned out that injection into the UEC version of CirrOS (this: https://launchpad.net/cirros/trunk/0.3.0/+download/cirros-0.3.0-x86_64-uec.tar.gz) works fine, but injection into the qcow2 version of the image produces the error given in the previous mail, so there seems to be robustness problems with these tools.

BR Fredric

-----Original Message-----
From: Pádraig Brady [mailto:P at draigBrady.com] 
Sent: den 30 maj 2012 18:03
To: Fredric Morenius
Cc: openstack; igor.laskovy at gmail.com
Subject: Re: [Openstack] File injection support

On 05/30/2012 03:47 PM, Fredric Morenius wrote:
> Hello Pádraig,
> 
> I am also trying to get file injection to work in Essex, but have run 
> into some issues, as stated here: 
> https://answers.launchpad.net/nova/+question/198878

Igor Laskovy also had that "device-mapper: resume ioctl failed:" issue with the "qemu-nbd" on a cirros image too, though he didn't need the injection though and just avoided it.

> The image I am launching is a simple bare container qcow2 image 
> (CirrOS, this: 
> https://launchpad.net/cirros/trunk/0.3.0/+download/cirros-0.3.0-x86_64
> -disk.img )

That image is a simple single partition image, and so should not need the patch referenced below.
What system are you using? If you installed libguestfs then that should be tried as a method without need for the patch below.

> Would it be possible to backport this: 
> https://github.com/openstack/nova/commit/2b3a1e7
> So that file injection as I am trying to do it will work? Or is there any other way to make it work?

The backport is trivial and already done in the Fedora/EPEL Essex packages.

I was thinking though that this was extra functionality and so not appropriate for the official stable branch?

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> this email shall not be considered as a contribution to OpenStack

:)

cheers,
Pádraig.