Does Xen support this or would it be KVM specific for now? On Feb 15, 2013 6:04 PM, "edison su (JIRA)" <[email protected]> wrote:
> > [ > https://issues.apache.org/jira/browse/CLOUDSTACK-1302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13579654#comment-13579654] > > edison su commented on CLOUDSTACK-1302: > --------------------------------------- > > We can add an option in disk offering: e.g. cache policy, has options like > none/writeback/writethrough, or just safety vs performace(this is what > vmware did: > http://pubs.vmware.com/vsphere-4-esx-vcenter/index.jsp?topic=/com.vmware.vsphere.webaccess.doc_41/managing_virtual_machines/t_customize_the_new_virtual_disk.html > ) > > > Add per storage setting for cache="none/writeback/writethrough" options > for VMs on KVM hypervisor > > > ------------------------------------------------------------------------------------------------- > > > > Key: CLOUDSTACK-1302 > > URL: > https://issues.apache.org/jira/browse/CLOUDSTACK-1302 > > Project: CloudStack > > Issue Type: Bug > > Security Level: Public(Anyone can view this level - this is the > default.) > > Components: Management Server > > Affects Versions: 4.0.0 > > Environment: Ubuntu 12.04.2 Host, KVM hypervisor > > Reporter: Jason Villalta > > Priority: Minor > > > > Version 4.0.0 of Cloudstack has a hard coded value of cache=none for > virtual machines deployed. This causes conflict with filesystems mounted > with fuse such as ZFS, GlusterFs and CEPH as fuse does not support directio > with these file systems. When starting VMs libvirt throws an error "could > not open disk image <disk> Invalid argument" > > Changing the cache= setting to writethough or writeback solves this > problem but there currently is no way to set this. Ideally this would get > set on a per datastore basis. > > -- > This message is automatically generated by JIRA. > If you think it was sent incorrectly, please contact your JIRA > administrators > For more information on JIRA, see: http://www.atlassian.com/software/jira >
