[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] virtio-blk and virtio-scsi performance comparison
|
From: |
Paolo Bonzini |
|
Subject: |
Re: [Qemu-devel] virtio-blk and virtio-scsi performance comparison |
|
Date: |
Tue, 21 Apr 2015 11:57:33 +0200 |
|
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 |
On 21/04/2015 11:53, Konstantin Krotov wrote:
>> Can you detail the problem more? That could be a kernel bug.
>
> 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.
That looks like a kernel problem.
Paolo