Hi Wido, This is for KVM (with Ceph backend as it happens), the API documentation is out of sync with UI capabilities, so I'm trying to figure out if we *should* be able to set cacheMode for root disks. It seems to make quite a difference to performance.
paul.an...@shapeblue.com www.shapeblue.com 53 Chandos Place, Covent Garden, London WC2N 4HSUK @shapeblue -----Original Message----- From: Wido den Hollander [mailto:w...@widodh.nl] Sent: 20 February 2018 09:03 To: dev@cloudstack.apache.org Subject: Re: Caching modes On 02/20/2018 09:46 AM, Paul Angus wrote: > Hey guys, > > Can anyone shed any light on write caching in CloudStack? cacheMode is > available through the UI for data disks (but not root disks), but not > documented as an API option for data or root disks (although is documented as > a response for data disks). > What hypervisor? In case of KVM it's passed down to XML which then passes it to Qemu/KVM which then handles the caching. The implementation varies per hypervisor, so that should be the question. Wido > #huh? > > thanks > > > > paul.an...@shapeblue.com > www.shapeblue.com > 53 Chandos Place, Covent Garden, London WC2N 4HSUK @shapeblue > > >
