> -----Original Message----- > From: zfs-discuss-boun...@opensolaris.org > [mailto:zfs-discuss-boun...@opensolaris.org] On Behalf Of Miles Nordin > Sent: Thursday, July 22, 2010 2:42 PM > To: zfs-discuss@opensolaris.org > Subject: Re: [zfs-discuss] File cloning > > >>>>> "sw" == Saxon, Will <will.sa...@sage.com> writes: > > sw> 'clone' vs. a 'copy' would be very easy since we have > sw> deduplication now > > dedup doesn't replace the snapshot/clone feature for the > NFS-share-full-of-vmdk use case because there's no equivalent of > 'zfs rollback' > > > I'm tempted to say, ``vmware needs to remove their silly limit'' but > there are takes-three-hours-to-boot problems with thousands of Solaris > NFS exports so maybe their limit is not so silly after all. > > What is the scenario, you have? Is it something like 40 hosts with > live migration among them, and 40 guests on each host? so you need > 1600 filesystems mounted even though only 40 are actually in use? >
Well in my case it's 8 hosts with live migration. We have ~650 VMs right now. They are not all running at once, but we tend to have 200-240 running at peak times of the day. We have to have all of them registered/available at any time. Our current solution is to have iSCSI LUNs holding many VMs at once, which is what I suspect most people would do to meet our requirements. I've been working with OpenSolaris to test delivery of VM storage over NFS, and I think it would also work well for us. Our users are allowed to create/deploy/clone their own VMs, and a common complaint I have today is that provisioning takes a long time. This will always be the case if the users provision using the vendor-supplied tools, but I think if I was storing VMs and templates on ZFS and serving via NFS, a file-level clone would let me offer much faster provisioning to the user without requiring additional software like VMware Lab Manager or more expensive storage hardware. -Will _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
