[jira] [Commented] (CLOUDSTACK-8239) Add support for VirtIO-SCSI for KVM hypervisors

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-8239?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15890338#comment-15890338 ] 

ASF GitHub Bot commented on CLOUDSTACK-8239:
--------------------------------------------

Github user nathanejohnson commented on the issue:

    https://github.com/apache/cloudstack/pull/1955
  
    @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 ===
    ok
    Verify that libvirt settings are as expected after a VM stop / start ... === TestName: test_02_verify_libvirt_after_restart | Status : SUCCESS ===
    ok
    Verify that libvirt settings are expected after a disk add ... === TestName: test_03_verify_libvirt_attach_disk | Status : SUCCESS ===
    ok
    Verify that guest sees scsi controller and disks ... === TestName: test_04_verify_guest_lspci | Status : SUCCESS ===
    ok
    
    ----------------------------------------------------------------------
    Ran 4 tests in 658.770s
    
    OK



> Add support for VirtIO-SCSI for KVM hypervisors
> -----------------------------------------------
>
>                 Key: CLOUDSTACK-8239
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-8239
>             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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