Hi :) Sorry if this isn't the right place to ask questions like this, but I'm having a bit of trouble getting information about this. Thing is, I'm trying to set up bcache for an Amazon EC2 machine which has two ephemeral SSDs. They're not very large, and I'm going to need more space than what they provide, so I was thinking about using bcache and use them together with larger (and much slower) EBS drives, then add mdadm striping on top of that. This works (I'm using kernel 3.13, by the way), but the performance is pretty bad. I'm wondering about what the optimal settings would be for such a setup. Both for the bcache backed devices, and for the md array itself. I'm thinking that the chunk size of the md array might negatively affect the way bcache works, and that it might be better to set it to something like 4k, assuming that that's what bcache works with internally (the SSDs being 4k and so on)? Any ideas? Thanks in advance, Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
