Re: [9fans] VIA VT8237 SATA/RAID i/o errors, dma doesnt work

["Lorenzo Fernando Bivens de la Fuente" <lorenzobivens@gmail.com>]

I have a via pc2500 mobo with that same chipset, afaik...

I bought it very cheap thinking that it would be a great plan 9
machine but I was not able to install it because the ide/sata
controller did not seem to be recognized by plan 9. I was using two
sata disks at that moment.

Perhaps I should try again. I'll tell you how it goes...


On Tue, Feb 5, 2008 at 8:18 AM, Kernel Panic <cinap_lenrek@gmx.de> wrote:
> Hello,
>
> I purchased an C7 based machine with VIA VT8237 SATA/RAID:
>
> http://www2.digitalo.de/deeplink.jsp;jsessionid=0FEFF78E7DE9EC893CD54A5B75AA7B60?PROD=948733&EXT=SHOPPING
>
> Have 2 SATA disks attached. They are detected like normal IDE devices.
> The Installation of Plan9 worked fine. Created partitions and #k mirror
> and setup
> venti. I wanted to copy the arenas of my old fileserver to it and then
> later format
> fossil with the last score, but the machine fails before
> finishing/reading the first
> arena. :-(
>
> First, i found that DMA was disabled for both drives, so i forced it on
> with:
> echo dma on >/dev/sdC0/ctl
> echo dma on >/dev/sdD0/ctl
>
> ...then i get i/o errors in venti and plan9 paniced. so this was not
> such a good idea i guess...
> reformated all venti partitions and tried again several times with
> different bios options
> (without DMA, tried both bios SATA IDE and SATA RAID mode):
>
> - after hours of disk activity, sdD0 failed... i tried to read
> /dev/sdD0/data and got i/o error instantly and
> after reboot worked again.
>
> - after hours of disk activity, i see i/o-error that it cant read
> /dev/sdD0/9hal.vtbloom
> (venti bloomfilter partition 64MB). and then crashed with poolpanic.
>
> http://plan9.bell-labs.com/wiki/plan9/Supported_PC_hardware/index.html
> shows that this
> controller should work but it doesnt for me currently.
>
> pci -v shows the as same ids as in the sdata.c driver.
>
> Is anybody using that sata controller? (with multiple SATA disks?) Do i
> miss here something?
> Are here any special BIOS options i need to get this working?
>
> cinap
>
>