Description of problem: Would it be possible to backport the following patches from Liberty to Mitaka? https://blueprints.launchpad.net/nova/+spec/libvirt-aio-mode Version-Release number of selected component (if applicable): How reproducible: When trying to set aio=native in RHOSP 8, it's no longer setting aio=native as per the previously merged patches that supported this : [workarounds] # Specific IO policies to use for different disk types # e.g: file=threads,network=native (list value) # This should not be required when nova auto selects the # most appropriate (http://bugzilla.redhat.com/865337), # or likewise qemu (http://bugzilla.redhat.com/1175440) #rhosp_disk_io_policies= rhosp_disk_io_policies=file=threads,network=native Steps to Reproduce: 1. Install RHOSP 8.0 2. Try to set aio=native on disks to tweak performances 3. Actual results: No longer supported Expected results: Should be supported Additional info: This looks like a regression. There's the libvirt option disk_cachemodes but it doesn't set the aio=native mode we need.
This patch solves our issue and confirmed by the customer.
*** Bug 1356719 has been marked as a duplicate of this bug. ***
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2016-2713.html