[jira] [Commented] (VCL-1084) set cache mode for libvirt VMs

["ASF subversion and git services (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/VCL-1084?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16884096#comment-16884096 ] 

ASF subversion and git services commented on VCL-1084:
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Commit d9fe39d2bec1b1208771b2cad30d64dfc931554b in vcl's branch refs/heads/develop from Josh Thompson
[ https://gitbox.apache.org/repos/asf?p=vcl.git;h=d9fe39d ]

VCL-1084 - set cache mode for libvirt VMs

libvirt.pm: modified generate_domain_xml: chagned call to is_file_on_local_disk from $self->os->nathost_os->is_file_on_local_disk to $self->vmhost_os->is_file_on_local_disk


> set cache mode for libvirt VMs
> ------------------------------
>
>                 Key: VCL-1084
>                 URL: https://issues.apache.org/jira/browse/VCL-1084
>             Project: VCL
>          Issue Type: Improvement
>          Components: vcld (backend)
>            Reporter: Josh Thompson
>            Priority: Major
>             Fix For: 2.5.1
>
>
> The recommend cache mode for VMs depends on the storage type being used. If the qcow2 file is on an NFS mount, the cache mode should be none. If it is on a local filesystem, it should be writethrough or writeback. Additionally, when trying to perform a live migration with a shared NFS mount, it fails if the cache mode is not none because data corruption could result.



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