Brandon Wilson wrote:
> Hi all, here's a couple questions.
> 
> Has anyone run oracle databases off of a UFS formatted ZVOL? If so, how does 
> it compare in speed to UFS direct io?
> 

I have not, but I suspect the performance will be worse than
pure zfs and ufsdio. For databases, you should try to minimize the
CPU cost per IO, and having to go thorugh UFS, then ZFS
will only make it worse.

> I'm trying my best to get rid of UFS, but ZFS isn't up to par on 
>the speed of UFS direct io for MDBMS. So I'm trying to come up 
>with some creative ways to get the ease of use of the zfs 
>filesystem manager, and get the speed and functionality of 
>UFS direct io. (Aren't we all? hehe)


Would you be willing to share some numbers?
-neel


> 
> Also, are UFS formatted ZVOLs officially supported by Sun?
> 
> Thanks,
> Brandon Wilson
> [EMAIL PROTECTED]
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