On Sunday February 17, keld@xxxxxxxx wrote: > Hi > > any opinions on suns zfs/raid-z? It's vaguely interesting. I'm not sold on the idea though. > It seems like a good way to avoid the performance problems of raid-5 > /raid-6 I think there are better ways. > > But does it stripe? One could think that rewriting stripes > other places would damage the striping effects. I'm not sure what you mean exactly. But I suspect your concerns here are unjustified. > > Or is the performance only meant to be good for random read/write? I suspect it is mean to be good for everything. But you would have to ask SUN that. > > Can the code be lifted to Linux? I understand that it is already in > freebsd. Does Suns licence prevent this? My understanding is that the sun license prevents it. However raid-z only makes sense in the context of a specific filesystem such as ZFS. It isn't something that you could just layer any filesystem on top of. > > And could something like this be built into existing file systems like > ext3 and xfs? They could have a multipartition layer in their code, and > then the heuristics to optimize block access could also apply to stripe > access. I doubt it, but I haven't thought deeply enough about it to see if there might be some relatively non-intrusive way. NeilBrown > > best regards > keld > - > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
