cloudstack-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From ilya <ilya.mailing.li...@gmail.com>
Subject Re: [Feature Request] VM Snapshot based on KVM+Ceph
Date Tue, 12 Jul 2016 17:48:09 GMT
I guess ENA beat us to it :) hats of to ENA folks!

On 7/12/16 6:39 AM, Simon Weller wrote:
> Wei's KVM QCOW2 snapshot PR works very well. I tested it a few months back -  It would
be great to get this into 4.9.10.
> 
> 
> In regards to the Ceph snapshot challenges, it is possible to emulate the behaviour you
want (sans the RAM component). We pushed a PR a couple of months ago to enable root detach
of volumes on KVM (It has been merged into 4.7-forward, 4.8-forward and 4.9 RC).
> 
> We use it to emulate a snapshot revert with Ceph by using createVolume sourced from a
snapshot, then detaching and reattach the root volume of a VM with device id of 0.
> This preserves the previous volume history and allows the user to switch back and forth
between different snapshots.
> 
> 
> We would like a fully featured "VM + memory" Ceph based snapshot as well, but as Wido
has indicated, a lot has to happen before that will be possible and we have more research
to do in order to understand the challenges. I would guess Redhat is going to be very interested
in getting this into libvirt, as they are obviously pushing Ceph aggressively.
> 
> 
> - Si
> 
> ________________________________
> From: Wei ZHOU <ustcweizhou@gmail.com>
> Sent: Tuesday, July 12, 2016 2:25 AM
> To: dev@cloudstack.apache.org
> Subject: Re: [Feature Request] VM Snapshot based on KVM+Ceph
> 
> Paul,
> 
> If you mean VM snapshot on QCOW2, there is a PR on github for it.
> 
> -Wei
> 
> 2016-07-12 5:58 GMT+02:00 Paul Shadwell <paul@shadwell.ch>:
> 
>> This is a feature that has been missing from Cloudstack since the
>> beginning when using KVM as the hypervisor.
>> It's been asked for many times but still no support.
>> This would be a huge plus for Cloudstack if this feature was added and
>> make it a much more viable product for end users.
>> KVM is usually chosen because 1: it's free 2: it has many features that
>> make it a much better choice for large installations.
>> Many have ended up either writing their own VM snapshot solution, or
>> simply hiding the icon from the customer.
>> I'm surprised that after years of waiting for this feature to be added,
>> it's still missing.
>> I know it's not totally the Cloudstack Dev team's fault that VM Snapshots
>> are missing from KVM support but I do think this is a list opportunity for
>> a big win if they did something about it.
>>
>> Just my 2 penneth on this subject that has plagued me on a daily basis
>> supporting Cloudstack installs.
>>
>> Regards
>> Paul
>>
>>
>>> On Jul 12, 2016, at 05:19, ilya <ilya.mailing.lists@gmail.com> wrote:
>>>
>>> Just FYI:
>>>
>>> You can ask on this list for sponsored feature development if this is
>>> something that needs prompt resolution.
>>>
>>> Regards
>>> ilya
>>>
>>>> On 7/8/16 7:07 PM, ??? wrote:
>>>> Hi,  Developers
>>>>
>>>>
>>>>
>>>> We deployed ACS+KVM+Ceph in our environment.  Everything looks fine
>>>> except the VM snapshot feature (not volume backup) is missing in current
>>>> ACS version which seems only supported by XenServer/ESXi.
>>>>
>>>>
>>>>
>>>> Wondering if we can have this on the roadmap as well.  @Wido, do you
>>>> have any plan ?
>>>>
>>>>
>>>>
>>>> Thanks !
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> private cloud2  *We Deliver Enterprise-Grade Cloud !*
>>>>
>>>>
>> ------------------------------------------------------------------------------
>>>>
>>>> *???*
>>>>
>>>> *Product Engineering & Innovation Center (PEIC)*
>>>>
>>>> *??????(??)??????*
>>>>
>>>> * *
>>>>
>>>> *????????**2679**?????????**B**?**601**?*
>>>>
>>>> *??:**201103*
>>>>
>>>> *Office: +86-21-62351222*
>>>>
>>>> *Mobile: +86-18602198181*
>>>>
>>>>
>>>>
>>>>
>>>>
>>
>>
> 

Mime
View raw message