git.net

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: KVM Live Snapshots


Simon - thanks for the reminder re VM snapshots - I think you've actually told me in the past as well.

Asai - a VM snapshot remains on primary storage and is there for the purpose of rolling a VM back to a previous timestamp, and it is not available for download. 
Volume snapshots are copied to secondary storage for the purpose of downloading by end user - but these are handled on a per volume basis.

Regards,
Dag Sonstebo
Cloud Architect
ShapeBlue

On 22/08/2018, 17:23, "Asai" <asai@xxxxxxxxxxxxxxxxxxxxx> wrote:

    Thank you for your responses,
    
    What’s the difference, then, between a "VM" snapshot and a "VOLUME" snapshot?  I liked how in XenServer, you could export a whole VM by first taking a snapshot.  This was great for disaster recovery backup, is there a way to do something similar in Cloudstack?
    
    Asai
    
    
    
Dag.Sonstebo@xxxxxxxxxxxxx 
www.shapeblue.com
Amadeus House, Floral Street, London  WC2E 9DPUK
@shapeblue
  
 

> On Aug 22, 2018, at 8:51 AM, Simon Weller <sweller@xxxxxxx.INVALID> wrote:
    > 
    > Make sure you have kvm.snapshot.enabled set to true in Global Settings. This setting change will probably require a management server restart.
    > 
    > 
    > - Si
    > 
    > 
    > 
    > 
    > ________________________________
    > From: Asai <asai@xxxxxxxxxxxxxxxxxxxxx>
    > Sent: Wednesday, August 22, 2018 10:44 AM
    > To: users@xxxxxxxxxxxxxxxxxxxxx
    > Subject: KVM Live Snapshots
    > 
    > Greetings,
    > 
    > We successfully upgraded to 4.11.1.  One of the main reasons we did this was that we thought this would enable us to do live KVM snapshots of running VMs.  This doesn’t seem to be the case, though.  When I try to snapshot a running VM, I just get the message: "KVM VM does not allow to take a disk-only snapshot when VM is in running state"
    > 
    > Is there a way currently to do this with Cloudstack and KVM VMs?
    > 
    > Asai
    > 
    >