[one-users] management of qcow2 images

[Jaime Melis]

Hi Rolandas,

thanks for the detailed feedback. I've just created an issue to follow this
up:
http://dev.opennebula.org/issues/2244

Regards,
Jaime


On Mon, Jul 15, 2013 at 10:33 AM, Rolandas Naujikas <
rolandas.naujikas at mif.vu.lt> wrote:

> Hi,
>
>
> On 2013-07-15 14:35, Ruben S. Montero wrote:
>
>> Hi Rolandas
>>
>> So the problem is how to update the version of an image, right? We are
>> currently copying the new file to the SOURCE of the image something like:
>>
>> cp debian_new.qcow2 `oneimage show debian |  | grep SOURCE | cut -d':'
>> -f2`
>>
>> This way you do not need to modify the qcow driver.
>>
>
> As I wrote in http://mif.vu.lt/~rolnas/stsc/**qcow2.txt<http://mif.vu.lt/~rolnas/stsc/qcow2.txt>we cannot simple replace qcow2 image with cp or mv, because original image
> could still be in use by some VM (referenced as backed file in snapshot
> qcow2). Until VM is running it is OK, because original file is still open
> by kvm, but when VM is stopped or turned off (power off), kvm process is
> terminated and original file is deleted, but snapshot qcow2 is still
> referencing original file by pathname.
>
> Regards
> Rolandas Naujikas
>
>  Does it make sense in your setup?
>>
>> Cheers
>>
>> Ruben
>>
>>
>> On Fri, Jul 5, 2013 at 9:42 AM, Rolandas Naujikas
>> <rolandas.naujikas at mif.vu.lt <mailto:rolandas.naujikas at mif.**vu.lt<rolandas.naujikas at mif.vu.lt>>>
>> wrote:
>>
>>     Hi,
>>
>>     For management of master images in qcow2 format we created a
>>     solution described here http://mif.vu.lt/~rolnas/stsc/**__qcow2.txt<http://mif.vu.lt/~rolnas/stsc/__qcow2.txt>
>>     <http://mif.vu.lt/%7Erolnas/**stsc/qcow2.txt<http://mif.vu.lt/%7Erolnas/stsc/qcow2.txt>>.
>> Hope it could solve
>>
>>     some management troubles and we are looking for improvements in
>>     OpenNebula also.
>>
>>     Regards, Rolandas Naujikas
>>     ______________________________**___________________
>>     Users mailing list
>>     Users at lists.opennebula.org <mailto:Users at lists.**opennebula.org<Users at lists.opennebula.org>
>> >
>>     http://lists.opennebula.org/__**listinfo.cgi/users-opennebula.**__org<http://lists.opennebula.org/__listinfo.cgi/users-opennebula.__org>
>>
>>     --
>>     <http://lists.opennebula.org/**listinfo.cgi/users-opennebula.**org<http://lists.opennebula.org/listinfo.cgi/users-opennebula.org>
>> >
>>
>>     --
>>     Join us at OpenNebulaConf2013 in Berlin, 24-26 September, 2013
>>     --
>>     Ruben S. Montero, PhD
>>     Project co-Lead and Chief Architect
>>     OpenNebula - The Open Source Solution for Data Center Virtualization
>>     <http://lists.opennebula.org/**listinfo.cgi/users-opennebula.**org<http://lists.opennebula.org/listinfo.cgi/users-opennebula.org>
>> >www.OpenNebula.org
>>     <http://www.OpenNebula.org> | rsmontero at opennebula.org
>>     <mailto:rsmontero at opennebula.**org <rsmontero at opennebula.org>> |
>> @OpenNebula
>>
>>
> ______________________________**_________________
> Users mailing list
> Users at lists.opennebula.org
> http://lists.opennebula.org/**listinfo.cgi/users-opennebula.**org<http://lists.opennebula.org/listinfo.cgi/users-opennebula.org>
>



-- 
Join us at OpenNebulaConf2013 <http://opennebulaconf.com/> in Berlin, 24-26
September, 2013
--
Jaime Melis
Project Engineer
OpenNebula - The Open Source Toolkit for Cloud Computing
www.OpenNebula.org | jmelis at opennebula.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opennebula.org/pipermail/users-opennebula.org/attachments/20130729/a4142894/attachment-0002.htm>