16.04.2015 14:57, Paolo Bonzini пишет:
On 16/04/2015 13:17, Konstantin Krotov wrote:
In my production system i'm interested to use io=thread, becouse i
export MD raid1 devices to guest's and i need to read from the MD device
performs balanced between raid1 legs (it's true only if io=thread).
Can you detail the problem more? That could be a kernel bug.
Paolo
I connect to the host system, two storage systems as block devices. Both
block devices combine md-raid1. md-device use as disk for virtual
machine. If i use io=native, read perform only from one of two raid1
legs. I'd like to distribute the load reading between two raid1 legs,
but md-raid1 implementation it does only if set io=thread.
--
WBR
Konstantin V. Krotov
