Many thanks for all your answers. Indeed, the term Snapshot is a bit confusing, perhaps it should be called something else ))). The trouble with the term Snapshot here is that the users will think it's a Snapshot and will start using it left, right and centre without realising that it takes ages to do, especially if many people are doing that simultaneously and it consumes far more disk space compared with the traditional Snapshotting )))
----- Original Message ----- From: "Paul Angus" <paul.an...@shapeblue.com> To: cloudstack-users@incubator.apache.org Sent: Thursday, 31 January, 2013 7:23:00 AM Subject: RE: Slow snapshots with KVM These are all valid points, but in the end CloudStack 'snapshots' do not behave in the way people from a virtualisation background are likely to expect them to; You can't just press a button and roll back, you can only create a clone of that VM which will have a different MAC and a new IP address and possibly a new hostname... I agree it may not be the best backup solution, but IMHO 'a backup' is closer fit for the functionality than a snapshot. Maybe we should all start calling a it a 'Clone'? Regards, Paul Angus S: +44 20 3603 0540 | M: +447711418784 paul.an...@shapeblue.com -----Original Message----- From: Nux! [mailto:n...@li.nux.ro] Sent: 30 January 2013 23:25 To: cloudstack-users@incubator.apache.org Subject: Re: Slow snapshots with KVM On 30.01.2013 22:48, David Nalley wrote: > > As long as you realize that these are 'crash consistent' snapshots, > then yes. I personally dislike using the term 'backup' for snapshots - > it's certainly not a method I'd use to backup data that was important > to me. > > --David Crash consistent can be great when you don't have anything else. :-) Plus another advantage of a full snapshot is that there's no I/O cost in maintaing it vs the changes in "master", like it is with the e.g. lvm snapshots. So there are advantages and disadvantages.. -- Sent from the Delta quadrant using Borg technology! Nux! www.nux.ro ShapeBlue provides a range of strategic and technical consulting and implementation services to help IT Service Providers and Enterprises to build a true IaaS compute cloud. ShapeBlue’s expertise, combined with CloudStack technology, allows IT Service Providers and Enterprises to deliver true, utility based, IaaS to the customer or end-user. ________________________________ This email and any attachments to it may be confidential and are intended solely for the use of the individual to whom it is addressed. Any views or opinions expressed are solely those of the author and do not necessarily represent those of Shape Blue Ltd. If you are not the intended recipient of this email, you must neither take any action based upon its contents, nor copy or show it to anyone. Please contact the sender if you believe you have received this email in error. Shape Blue Ltd is a company incorporated in England & Wales.
