> -----Original Message----- > From: Koushik Das [mailto:[email protected]] > Sent: Tuesday, August 13, 2013 11:17 AM > To: [email protected] > Subject: RE: Possible to place guest VM swap on local storage? > > > > Hope this helps anyone else trying to do the same thing. The two > > surprises in the process were the automatic creation of the primary > > storage, and the missing configuration row in the database (bug). > > N > > When local storage setting is enabled at the zone then local primary stores > attached to the host automatically gets discovered while adding the host. For > already added host the discovery happens after MS is restarted. > About the missing config, is it a new installation or an upgraded one? The > config needs to be present in both scenarios. >
One clarification, the local storage config is now part of the data center/zone definition. In the database it is present in 'data_center' table and not the 'configuration' table. > -Koushik > > > > From: [email protected] > > > To: [email protected] > > > Subject: RE: Possible to place guest VM swap on local storage? > > > Date: Mon, 12 Aug 2013 20:24:27 -0400 > > > > > > Your suggestion is exactly the process I attempted to follow, but it > > > was not > > permitted,which is why I have come to the forum. I defined a storage > > service offering, local, of1G. > > > When I try to create a data disk using that offering, the attempt > > > fails with > > the message 'Zone is not configured to use local storage but volume's > > disk offering LocalSwap uses it'.I understand that the 'local storage' > > enabling configuration is in the zone definition, and isalterable at > > any time. I see the box in the UI to enable it. > > > This leaves me a dilemma... if I configure the zone to use local > > > storage, then > > I am uncertainof the degree of risk to which I expose the zone... does > > my next VM ROOT disk end up onlocal? Or is that taken because the VM > > disk offering will use 'shared' and this is how the placementis > > controlled - via shared/local? I want to be sure before I do this, as > > I have a number ofguests and data disks already defined and do not > > dare risk blowing up this running cloud. > > > Thanks for the response! > > > > > > > Date: Mon, 12 Aug 2013 17:03:14 -0700 > > > > Subject: Re: Possible to place guest VM swap on local storage? > > > > From: [email protected] > > > > To: [email protected] > > > > > > > > What one can do is create a disk offering using local storage. > > > > Then when spinning up a VM using the regular shared storage (NFS) > > > > include a data disk that uses the local storage offering. Once the > > > > guest boots it should understand that it has to use the additional > > > > disk for swap > > space. > > > > Accomplishing this via scripts... Hope that helps. > > > > On Aug 12, 2013 4:27 PM, "Noel Kendall" <[email protected]> > > wrote: > > > > > > > > > Typically, I configure primary storage onto an NFS server with a > > > > > RAID1 array, and expose that zone-wide.Works fine. > > > > > However, it strikes me that it makes little sense to allow guest > > > > > VMs to place their swap files there - which is thesimple model > > > > > currently > > in place. > > > > > What I would prefer, and makes sense from a performance point of > > > > > view, is to define a number of swap partitionson disk images > > > > > residing on the local storage system of my KVM host. > > > > > I've been over the documentation several times and it seems that > > > > > options for configuring this setup are notgranular enough: I > > > > > want primary storage defined in the NFS to be the default locus > > > > > for storage, while local storageto be the locus for specifically > > > > > placed swap > > resources. > > > > > Has anybody done this, or know how this can be done? > > > > > TIA, Noel > > > > >
