[Users] Bottleneck writing to a VM w/ mounted GlusterFS

Hello, I'm testing oVirt 3.3 with GlusterFS libgfapi back-end. I'm using a node for engine and one for VDSM. From the VMs I'm mounting a second GlusterFS volume on a third storage server. I'm experiencing very bad transfer rates (38MB/s) writing from a client to a VM on the mounted GlusterFS. On the other hand, from the VM itself I can move a big file from the root vda (libgfapi) to the mounted GlusterFS at 70MB/s. I can't really figure out where the bottleneck could be. I'm using only the default ovirtmgmt network. Thank you for your help, any hint will be appreciated. Regards, -- Stefano Stagnaro IT Manager Prisma Engineering S.r.l. Via Petrocchi, 4 20127 Milano – Italy Tel. 02 26113507 int 339 e-mail: stefanos(a)prisma-eng.com skype: stefano.stagnaro