kkkk wrote:
Hi all
here are details. Actually most news are not good, but I appear to have
found one bottleneck: LVM, see below.

Have you communicated this information to the linux filesystem
developers? According to the MAINTAINERS document in the kernel source
the current maintainer is Alasdair Kergon and the contact address is
".

Since there are people getting excellent speed out of raid on linux, I
can only assume that your configuration is suboptimal.

Chris