[CentOS] hdc: no DRQ after issuing MULTWRITE

[Robert Moskowitz]

John R Pierce wrote:
> Robert Moskowitz wrote:
>   
>> Any idea what can be done?  They seem to be more nuance that not, but if 
>> I am in init 3 mode and in VI and get one of these messages in the 
>> middle of editing some file, well, I typically :q! out and start over.....
>>   
>>     
>
> you can use ctl-L to refresh a vim edit screen... (if you're in insert 
> mode, hit <ESC> first)...  beats quitting and starting over.
>   

Now I just have to remember that when I am using vi. I actually use vi a 
lot, but just for simple editing...

>
>  do these errors always occur on /dev/hdc or random devices?  if always 
> /dev/hdc, is that a CD/DVD or a HD ?      that OQO thing is some kinda 
> VIA C7 or whatever?   you might try disabling DMA on the /dev/hdc, like...
>   

hdc is the ONLY media regularly in the unit. Only used CD for the 
install, and only occationally a usb drive. And yes it is a VIA-based 
system.

And disabling DMA results in what? No dma errors, slower seek/write 
times, bad things on kernel panics?

>  
>     /sbin/hdparm -d0 /dev/hdc
>
> [this would have to be put in a init file, maybe /etc/rc.d/rc.local ]