[Lustre-discuss] state of sun x4500 drivers

[Mike Berg]

For the x4500, there is a marvell mv_sata driver that should be used.  
It should be downloadable from the x4500 downloads page, sorry I don't  
have the specific link handy:

http://www.sun.com/servers/x64/x4500/support.xml

Regards,
Mike


On Apr 23, 2008, at 1:00 PM, Brian Behlendorf wrote:

>
> Recently I have also been doing some linux work with the x4500 and I  
> have been
> using the sata_mv driver (v0.81).  The driver will properly detect  
> all the
> drives and you may access them safely.  However, from what I've seen  
> the
> driver needs some further development work to actually perform  
> well.  I see
> only 30 MB/s write rates to a single disk using a simple streaming  
> dd test.
> Much of this bad performance may simply be due to the fact that the  
> driver
> can not enable the disk write-back cache forcing you to use write- 
> thru mode.
>
> So currently the bottom line is linux will work on the x4500.  But  
> to get it
> working well someone is going to need to invest some development  
> effort to
> improve the linux driver.
>
> Good luck,
> Brian
>
>
>> There was some discussion about the driver/module for the sata
>> controlers in the thumper (x4500) in the linux kernel.
>>
>> My question is if we bought one of these,  would the CFS kernel have
>> everything needed to use the thumper in a safe way.
>> Thank You.
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