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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Commented] (CLOUDSTACK-8239) Add support for VirtIO-SCSI for KVM hypervisors
Date Wed, 01 Mar 2017 15:09:46 GMT


ASF GitHub Bot commented on CLOUDSTACK-8239:

Github user nathanejohnson commented on the issue:
    @wido I have removed the extraneous log messages.
    @boris I have added a smoke test for this that tests both virsh output from the host and
lspci / lsblk output from the guest.  Here is the output from me running this in a bubble:
    Test that libvirt properly created domain with scsi controller ... === TestName: test_01_verify_libvirt
| Status : SUCCESS ===
    Verify that libvirt settings are as expected after a VM stop / start ... === TestName:
test_02_verify_libvirt_after_restart | Status : SUCCESS ===
    Verify that libvirt settings are expected after a disk add ... === TestName: test_03_verify_libvirt_attach_disk
| Status : SUCCESS ===
    Verify that guest sees scsi controller and disks ... === TestName: test_04_verify_guest_lspci
| Status : SUCCESS ===
    Ran 4 tests in 658.770s

> Add support for VirtIO-SCSI for KVM hypervisors
> -----------------------------------------------
>                 Key: CLOUDSTACK-8239
>                 URL:
>             Project: CloudStack
>          Issue Type: New Feature
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: KVM, Storage Controller
>    Affects Versions: 4.6.0
>         Environment: KVM
>            Reporter: Andrei Mikhailovsky
>            Assignee: Wido den Hollander
>            Priority: Critical
>              Labels: ceph, gsoc2017, kvm, libvirt, rbd, storage_drivers, virtio
>             Fix For: Future
> It would be nice to have support for virtio-scsi for KVM hypervisors.
> The reason for using virtio-scsi instead of virtio-blk would be increasing the number
of devices you can attach to a vm, have ability to use discard and reclaim unused blocks from
the backend storage like ceph rbd. There are also talks about having a greater performance
advantage as well.

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