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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-8239) Add support for VirtIO-SCSI for KVM hypervisors
Date Sun, 12 Mar 2017 02:59:04 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-8239?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15906404#comment-15906404
] 

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

Github user nathanejohnson commented on the issue:

    https://github.com/apache/cloudstack/pull/1955
  
    I just re-depoyed and re-ran the test:
    
        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
        Update os type to Ubuntu, change vm details rootdiskController ... === TestName: test_05_change_vm_ostype_restart
| Status : SUCCESS ===
        ok
        Verify that guest sees scsi controller and disks after switching ostype and rdc ...
=== TestName: test_06_verify_guest_lspci_again | Status : SUCCESS ===
        ok
        
        ----------------------------------------------------------------------
        Ran 6 tests in 785.914s
        
        OK
    
    @wido , I believe all of your concerns should be addressed.  trim is enabled, it's using
an enum and not a string, and spurious log messages have been eliminated.
    
    I have squashed all of the commits into one.  I'm at a point where I'm happy with the
code.


> 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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