Bob Friesenhahn wrote:
On Sat, 18 Apr 2009, Ian Collins wrote:
Nice sentiment, but not a lot of use if they want people to use the
module! ZFS while definitely the result of "outside the box" thinking
it can be used on all exiting hardware. How far would it have
progressed if it had required specialised hardware?
It seems wrong to use a SCSI or SATA stack to access a hardware device
like this. We could have used SCSI or SATA to access our video card,
but we chose not to because there are more efficient models. Likewise
a new type of "short stack" can be invented along with a new hardware
interface which is otimum for accessing memory-based low-latency
non-volatile devices. This "short stack" can fit under zfs like any
other block-oriented storage device.
The win is nonvolatile main memory. When we get this on a large,
fast scale (and it will happen in our lifetime :-) then we can begin
to forget about file systems, with an interim step through ramdisks.
This already exists for many household/personal devices today, so
it is really just a wait-until-Moore's-Law-catches-up game.
-- richard
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