[ovirt-users] Re: [ANN] oVirt 4.3.6 is now generally available

On Tue, Oct 1, 2019 at 11:27 AM Guillaume Pavese <guillaume.pavese(a)interactiv-group.com&gt; wrote: > > Hi all, > > Sorry for asking again :/ > > Is there any consensus on not using --emulate512 anymore while creating VDO volumes on Gluster? > Since this parameter can not be changed once the volume is created and we are nearing production setup. I would really like to have an official advice on this. > > Best, > > Guillaume Pavese > Ingénieur Système et Réseau > Interactiv-Group > Hello Guillaume Pavese, If you are not using --emulate512 for VDO volume, then VDO volume will be created as 4K Native volume (with 4K block size). There are couple of things that bothers here: 1. 4K Native device support requires fixes at QEMU that will be part of CentOS 7.7.2 ( not yet available ) 2. 4K Native support with VDO volumes on Gluster is not yet validated thoroughly. Based on the above items, it would be better you have emulate512=on or delay your production setup ( if possible, till above both items are addressed ) to make use of 4K VDO volume. @Sahina Bose Do you have any other suggestions ? -- Satheesaran S (sas) > > > On Fri, Sep 27, 2019 at 3:19 PM Sandro Bonazzola <sbonazzo(a)redhat.com&gt; wrote: >> >> >>