Is there any way easy way to make this setting dependent on the storage definition? For example some primary storage may need this set to one value such as cache=writeback such as with the case of ZFS, GlusterFS, CEPH. Then other storage may want a different setting such as cache=writethough or none which is the case with a local ext4 storage or NFS.
On Thu, Feb 14, 2013 at 11:08 PM, Rajesh Battala <rajesh.batt...@citrix.com> wrote: > Hi Jason Villalta, > In LibvirtVmDef.java, there is DiskDef class , get the cache value from the > Global config, while constructing the xml in the override method the class > toString() specify the cache value, currently it is using "none". > > NOTE: whenever there is change in GC value, MS should restart for the value > to take effect. > > Thanks > Rajesh Battala > >> -----Original Message----- >> From: Rajesh Battala [mailto:rajesh.batt...@citrix.com] >> Sent: Friday, February 15, 2013 9:22 AM >> To: cloudstack-users@incubator.apache.org; cloudstack- >> d...@incubator.apache.org >> Subject: RE: Change qcow disk cache=none >> >> Hi Jason Villalta, >> >> Can you raise the ticket for the same. I can work on it if you assign to me. >> >> Thanks >> Rajesh Battala >> >> > -----Original Message----- >> > From: Edison Su [mailto:edison...@citrix.com] >> > Sent: Friday, February 15, 2013 4:59 AM >> > To: cloudstack-users@incubator.apache.org >> > Subject: RE: Change qcow disk cache=none >> > >> > The code is at https://git-wip-us.apache.org/repos/asf?p=incubator- >> > cloudstack.git;a=blob;f=plugins/hypervisors/kvm/src/com/cloud/hypervis >> > or/kv >> > >> m/resource/LibvirtVMDef.java;h=acfd9cf1fe8eba217f09e20adf3101d1295d51d >> > a;hb=HEAD, search "cache". >> > you can add a global configuration in cloudstack, or add a >> > configuration in agent.properties, to specify cache attribute. >> > >> > > -----Original Message----- >> > > From: Jason Villalta [mailto:ja...@rubixnet.com] >> > > Sent: Thursday, February 14, 2013 2:16 PM >> > > To: cloudstack-users@incubator.apache.org >> > > Subject: Re: Change qcow disk cache=none >> > > >> > > Ok, I see the folks at openstack ran into a similar issue. >> > > https://bugs.launchpad.net/nova/+bug/959637 >> > > >> > > How can I contribute to this? Can you recommend a part of the code >> > > to look at so I can build and test a patch? >> > > >> > > On Thu, Feb 14, 2013 at 5:13 PM, Edison Su <edison...@citrix.com> wrote: >> > > > need to change cloudstack java code, right now, it's hard coded to >> > > "cache=none". >> > > > >> > > >> -----Original Message----- >> > > >> From: Jason Villalta [mailto:ja...@rubixnet.com] >> > > >> Sent: Thursday, February 14, 2013 1:45 PM >> > > >> To: cloudstack-users@incubator.apache.org >> > > >> Subject: Change qcow disk cache=none >> > > >> >> > > >> Is there a way to change this kvm disk cache setting in >> > > >> Cloudstack or >> > > template? >> > > >> If so where is the setting applied? >> > > >> >> > > >> -- >> > > >> -- >> > > >> Jason Villalta >> > > >> Co-founder >> > > >> 800.799.4407 | www.RubixTechnology.com >> > > >> > > >> > > >> > > -- >> > > -- >> > > Jason Villalta >> > > Co-founder >> > > 800.799.4407 | www.RubixTechnology.com -- -- Jason Villalta Co-founder 800.799.4407 | www.RubixTechnology.com
