[Udpcast] Quesiton on Kernel builds?

[Alain Knaff]

Michael D. Setzer II wrote:
> I just build some new udpcast cd images, and noted that the ATA drives are now showing up 
> as sda instead of (hda) in the older version.The same issue occurred some time ago with 
> Fedora. Don't recall the exact version where it changed. 

Yes, most recent distributions do behave like this. Starting from kernel
2.6.24, I no longer managed to compile it to use the "old" names, so I had
to move to sda.

> I maintain the g4l disk imaging project, and include the udp-sender and udp-reciever on it, 
> but also recommend using udpcast for doing many machines at once. I actually create 
> images on my servers via g4l and ftp, but the use udpcast to image the lab machines from 
> one to many. 
> 
> For the g4l, I've build the kernel with everything built into the kernel, which makes a single 
> file, and the cd has a number of various kernels since some work with one setup of 
> hardware, while others may not. Except for one scis_wait something modual that always 
> builds as a modual, it is just the single bzImage files that I rename. Have currently created 
> images up the 2.6.27.4. This seems to work fine, and make the cd image easy to add, but it 
> still has the ATA disk coming up as (hda). Not a problem, but I've had a couple of users say 
> they are getting very slow disk performance on some setups. On my own machine, I seem to 
> see no difference in speed, but I'm wondering if on some systems, it is selecting a slower 
> compatible disk driver or something. At one point, I had a user with a SIS5513 controller that 
> required a kernel patch to get higher speeds, but believe that was resolved in an updated to 
> the kernel source that was suppose to get the correct bus speed.
> 
> Wish I had more info on building kernels.
> 
> Thanks.


Check http://udpcast.linux.lu/mkimagedoc.html#kernelCompile for instructions

Alain