[one-users] OpenNebula ceph snapshots problem.

[Leszek Master]

I've forgot to tell that i've upgraded my opennebula to 4.6 version.


2014-05-14 12:08 GMT+02:00 Leszek Master <keksior at gmail.com>:

> Can you write me what i need to do to migrate to qcow2 format? I've got
> running vm's that cannot be "deleted". I tried migrating them form rbd v1
> to v2 but this doesn't solved my problem.
>
>
> 2014-04-30 12:41 GMT+02:00 Javier Fontan <jfontan at opennebula.org>:
>
> I'm not sure I follow you with that. Just changing the TM from ceph to
>> qcow2 is something that probably doesn't work. One of the things that
>> can be failing is that getting the free space from ceph and qcow2 is
>> totally different and it may be that the datastore is reporting 0
>> bytes free. In this case the scheduler will never start a VM that uses
>> that datastore.
>>
>> On Wed, Apr 23, 2014 at 9:18 AM, Leszek Master <keksior at gmail.com> wrote:
>> > I tried to change rbd image version from 1 to 2 but it doesn't work. But
>> > when i changed in my ceph datastore TM_MAD to qcow2 the new VM
>> instantized
>> > from image that was in the datastore stuck on "PENDING". Is there any
>> way to
>> > get this working with "existing" images?
>> >
>> >
>> > 2014-04-21 14:53 GMT+02:00 Stuart Longland <stuartl at vrt.com.au>:
>> >
>> >> On 17/04/14 01:18, Leszek Master wrote:
>> >> > 1) I'm using OpenNebula 4.4 with ceph datastore. When i try to make
>> >> > snapshot i've got error:
>> >> > 3) Is there any way to use copy-on-write in opennebula 4.4 ?
>> >>
>> >> I did some experimental work on this with our OpenNebula 4.4 instance.
>> >> It relies on modern kernel's ability to map version-2 RBD images using
>> >> the kernel rbd driver, so it needs kernel >3.10 (? Not sure of exact
>> >> version; we're using 3.13).
>> >>
>> >> This newer format allows copy-on-write cloning.  "Hot" snapshots work,
>> >> however I haven't managed to trigger a deferred snapshot, so that's
>> >> untested.  The driver also makes use of hypervisor-side cache using
>> >> FlashCache, allocating slices of a nominated LVM volume to boost
>> >> performance.
>> >>
>> >> I've thrown my work into a git repository for now, consider this very
>> >> much pre-alpha.  If you're brave, feel free to give it a go:
>> >>
>> >> git clone git://git.longlandclan.yi.org/opennebula-ceph-flashcache.git
>> >>
>> >> Regards,
>> >> --
>> >> Stuart Longland
>> >> Systems Engineer
>> >>      _ ___
>> >> \  /|_) |                           T: +61 7 3535 9619
>> >>  \/ | \ |     38b Douglas Street    F: +61 7 3535 9699
>> >>    SYSTEMS    Milton QLD 4064       http://www.vrt.com.au
>> >>
>> >>
>> >
>> >
>> > _______________________________________________
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>> > Users at lists.opennebula.org
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>> >
>>
>>
>>
>> --
>> Javier Fontán Muiños
>> Developer
>> OpenNebula - The Open Source Toolkit for Data Center Virtualization
>> www.OpenNebula.org | @OpenNebula | github.com/jfontan
>>
>
>
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