Re: [9fans] venti wrarena i/o errors

[Joshua Wood <josh@utopian.net>]

>
> The new machine is a VIA.  I will try again without dma.

Were you manually turning dma on? If not, this is not likely to be a  
case where your problem was same as the one I mentioned. I was  
forcing dma on a chipset not listed in the distributed /sys/src/9/pc/ 
sdata.c.

> I will also
> add in the bloom partition, but I'm low on memory at the moment (256MB
> doesn't sound low to me, but I find the new venti can be a bit greedy
> if not constrained), so I'm not sure if that is actually worth doing.

It's optional, and it's not causing your problem, so I don't want to  
distract from the immediate issue, but you can kinda get the best of  
both worlds if memory is tight by starting with a bloom filter, then  
dropping it from your venti conf as the system ages toward less write- 
intensiveness.

> I will read the venti man pages more slowly to understand better.

sources/contrib/steve/doc/Venti-rescue.pdf is a mildly-dated but  
excellent supplement to the manual for the task you're attempting,  
and discusses memory allotment between venti and fossil in an  
appendix, too.

--
Josh