Hi Alena, I was wondering how we plan to keep track of the new "bootable" property? When we create a VM, would we just mark its root disk as bootable and then that property becomes immutable (for the upgrade case, all root disks would be marked as bootable)?
I'm thinking we'd want to keep track of bootable disks even when there are detached and turned into data disks. Is that what you had in mind? Thanks! Mike On Tue, Mar 25, 2014 at 12:20 PM, Alena Prokharchyk < alena.prokharc...@citrix.com> wrote: > Here is the link to the corresponding FS (placed in "4.5 Design documents" > section) > > https://cwiki.apache.org/confluence/display/CLOUDSTACK/ROOT+volume+detach > > -Alena. > > From: Alena Prokharchyk <alena.prokharc...@citrix.com<mailto: > alena.prokharc...@citrix.com>> > Date: Monday, March 24, 2014 at 11:37 AM > To: "dev@cloudstack.apache.org<mailto:dev@cloudstack.apache.org>" < > dev@cloudstack.apache.org<mailto:dev@cloudstack.apache.org>> > Subject: [PROPOSAL] ROOT volume detach - feature for CS 4.5 > > I would like to propose a new feature for CS 4.5 - "ROOT volume detach" - > that enables support for following use cases: > > 1) Replace current ROOT volume with the new one for existing vm. > 2) Case when ROOT volume of vm1 gets corrupted, and you want to attach it > to vm2 to run the recovery utils on it. With current CS implemntation, you > have to perform several steps - create snapshot of vm1's volume, create > volume from snapshot, attach volume to the vm2. New implementation will > merge it all to one step. > > > With the planned implementation, once the ROOT volume is detached, it can > be attached to any existing vm (with respect to Admin/Domain/Physical > resources limitations), either as a DataDisk or a Root disk. > > Amazon EC2 already has this functionality in place, so I think CS would > only benefit from having it. Storage experts (Edison, others) please raise > your concerns if you have any, or if you see any potential problems with > the planned implementation. And if anyone can think of other use cases this > feature can possible solve, I would appreciate this input as well. > > > Feature limitations: > > * ROOT volume can be detached only when vm is in Stopped state > * CS will fail to start the vm not having a ROOT volume > > I will send out the link to the FS once I start getting feedback on the > proposal. > > -Alena. > -- *Mike Tutkowski* *Senior CloudStack Developer, SolidFire Inc.* e: mike.tutkow...@solidfire.com o: 303.746.7302 Advancing the way the world uses the cloud<http://solidfire.com/solution/overview/?video=play> *(tm)*
