Re: libvirt qemu/kvm/rbd inside VM read slow

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On 2014-01-10 13:21, Ирек Фасихов wrote:

You need to use VirtIO.

    <target dev='*vdb*' bus='*virtio*'/>

According to <http://ceph.com/docs/next/rbd/qemu-rbd/#enabling-discard-trim>, virtio doesn't support discard/TRIM. However, it seems like virtio-scsi supports discard. Is it possible to use virtio-scsi to get *both* performance and discard?

--
Carl-Johan Schenström
Driftansvarig / System Administrator
Språkbanken & Svensk nationell datatjänst /
The Swedish Language Bank & Swedish National Data Service
Göteborgs universitet / University of Gothenburg
carl-johan.schenstrom@xxxxx / +46 709 116769
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