David, Thanks.
1. How does OpenSolaris zfs utilize the storage tier on System z? Are the disks allocated to zfs pool(s) simply reserved CMS formatted disks? 2. How does the Async I/O in ZFS work? Would the guest that requested the I/O be signaled with an ext interrupt by the I/O appliance? 3. What API/system transport layer would be used in VM for guests to conduct I/O through an appliance managing ZFS? Regards, --. .- .-. -.-- Gary Dennis 0 ... living between the zeroes ... 0 On 4/1/09 8:47 PM, "David Boyes" <dbo...@sinenomine.net> wrote: > Some of the STK/Sun disks have hardware features to do this. OpenAFS or Lustre > could do this if you allow Linux guests to provide the services, or ZFS if you > allow OpenSolaris guests. It¹d be very easy to package up an appliance server > image to do what you need done with either one (Linux or OpenSolaris). > > Other than that, you have to use SFS or BFS, and both need some work to do > continuous availability. Minidisks won¹t work for this. > > On 4/1/09 5:32 PM, "Gary M. Dennis" <gary.den...@mantissa.com> wrote: > >> Is there a VM I/O management system available which will: >> >> 1. Support space allocation requests for guests on a sparse basis? The file >> server needs to make the guest believe it actually has the entire allocation >> while only tying up space in the pool the guest actually used. >> >> 2. Support Async I/O requests from multiple guests? >> >> 3. Dynamically scale and from sub- TB to n EB. >
