Either would work, but a shared address space would seem to be the most
lightweight approach.
On 4/3/09 3:57 PM, "Dave Jones" <d...@vsoft-software.com> wrote:
> Would you consider a mechanism like IUCV or shared data address spaces
> as acceptable methods to send data back and forth between z/VOS guests
> and a file server of some sort?
>
> Gary M. Dennis wrote:
>> Jeff,
>>
>> What I was trying to determine if there was a way to use ZFS on OpenSolaris
>> System z as a high speed space management vehicle while bypassing
>> conventional transport layers? For example, let¹s say there existed a way
>> to push data to the IO appliance cross-memory (guest to ZFZ, ZFS to guest)
>> such that an interface in the appliance could act as a local proxy for each
>> guest using the service.
>>
>> Regards,
>>
>>
>> Gary
>>
>> --. .- .-. -.--
>>
>> 0 ... living between the zeroes... 0
>>
>>
>>
>>
>> On 4/3/09 11:29 AM, "Jeff Savit" <jsa...@gmail.com> wrote:
>>
>>> "Gary M. Dennis" wrote:
>>>>> 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?
>>> Exactly that: minidisks used by OpenSolaris on z port ("sirius" for short)
>>> are
>>> CMS-formatted and RESERVE-d minidisks. That way sirius knows which minidisks
>>> to *not* touch.
>>>
>>>>> 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?
>>> Do you mean from the POSIX API level or at the virtual machine I/O level?
>>> ZFS obeys standard POSIX semantics for file I/O, including the ability to
>>> specify sync semantics.
>>> From the physical I/O perspective, everything is done by DIAG 250, which
>>> permits non-guest-blocking I/O.
>>>
>>>>> 3. What API/system transport layer would be used in VM for guests to
>>>> conduct
>>>>> I/O through an appliance managing ZFS?
>>> Not sure what you mean by this - could you explain? Guests running which OS
>>> talking to an appliance running where?
>>>
>>> regards, Jeff
>>>
>>
>>
>>
>>
>>
>>
--. .- .-. -.--
Gary Dennis
Mantissa Corporation
1121 Edenton Street
Birmingham, Alabama 35242-9257
0 ... living between the zeroes... 0
p: 205.968-3942
m: 205.218-3937
f: 205.968.3932
gary.den...@mantissa.com
http://www.mantissa.com
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