Re: [Users] oVirt 3.5 planning

On 02/25/2014 03:30 PM, Sven Kieske wrote: > Well, afaik the current workflow is like this: > > I have iso domain (hosted on NFS server) a, attached to host b. > > On host b I got vms c,d and e. > > When I attach an ISO from a to c, the iso gets > copied from the NFS server to /var/run/vdsm/payload/{UUID}/.. > > When I attach the same ISO file from a to d the very same iso > file gets copied again to /var/run/vdsm/payload/{UUID_2}/ from > the NFS server. linked, not copied?!

> > This is unnecessary because there is already a copy of the iso in > the locale filesystem, so it would be cool if this is stored in a > way that multiple vms on the same host can utilize the same iso file > without downloading it multiple times. > > I hope I described the workflow in a correct way. > If this is done already I am not aware of it, so please correct > me if I'm wrong. > > An additional side effect would be that you can utilize this locally > stored iso files while the NFS server or the ISO Domain is in > maintenance mode for some reason. Or if you have a network maintenance > for the network path which leads to the ISO Domain. > > Of course this just works if the host has enough ram or dedicated local > storage to store these copies. > > I know that you can circumvent this, by using a locally created ISO > Domain on the host itself. But then you lose the ability of sharing > this ISO domain with different DCs, don't you? > > > Am 25.02.2014 14:16, schrieb Itamar Heim: >> On 02/25/2014 11:55 AM, Sven Kieske wrote: >>> RFE: Allow multiple local storage domains/ hosts within a cluster >>> with automigration via export domains (vm has to be shut down) >>> I will write a detailed BZ for this. >> >> this can only happen after we finish the removal of storage pool aspects >> (which is currently being worked on) >> >>> >>> RFE: temporary copys of iso-images on hosts which get mounted from >>> iso domains into vms, this would allow to detach an iso domain while >>> isos are attached and would also lower network traffic when an iso >> >> what's the use case for detaching an iso domain making this worth while? >> (it will also kill live migration, or force it to become live storage >> migration for the iso) > > _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users