[Devil-Linux-discuss] Support for Promise Ultra100 IDE controller?

[Tim T. <t....@co...>]

I am setting up a RAID-1 array on a Promise Ultra100-TX2 PCI IDE 
controller. I followed the dl docs guide, which made it very easy (only 
gotcha is I had to use the devfs names in mdadm.conf). While it all 
seens to work, it is doing the initial syncing at only 3.3MB/sec, which 
seem much to slow for a modern Ultra-DMA5 drives. hdparm reports that 
the current mode is UDMA5, dma is on, write-cache is on. The hdparm -t 
reports read speeds for both drives of 51~55MB/s.

Searching the web I found some references to needing kernel support for 
these controllers, and doesn't seems to be a known device to the dl 
kernel in 1.0.2b. Also the boot log idicates the BIOS has these drives 
set to pio mode. Yet the hdparm -t would lead me to believe that UDMA is 
in fact working. There are on errors in the syslog.

Any ideas?

Tim