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    SubjectRe: [RFC PATCH]vhost-blk: In-kernel accelerator for virtio block device
    On Mon, Aug 01, 2011 at 01:46:33PM +0800, Liu Yuan wrote:
    > >- I focused on using vfs interfaces in the kernel, so that I can
    > >use it for file-backed devices.
    > >Our use-case scenario is mostly file-backed images.
    > >
    > vhost-blk's that uses Linux AIO also support file-backed images.
    > Actually, I have run Guests both on raw partition and raw file
    > images.

    Note tjat it will only perform very well for preallocated images (just
    like aio=native in qemu) - if you use sparse images it will have to
    call into the allocator, which blocks for metadata I/O even in aio mode.

     \ /
      Last update: 2011-08-01 10:15    [W:0.018 / U:63.380 seconds]
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