I've been looking into the issue of which storage controllers are suitable for use with NFS + BtrFs (or NFS + ZFS) and put some comments about it on my blog[1] today. I understand that for NFS it is generally desirable to have non-volatile write cache if you want good write performance. On the other hand, self-healing file systems (BtrFs and ZFS) like having direct access to disks and those RAID cards with caches don't always give the same level of access to the volume. Can anybody give any practical suggestions about how to reconcile these requirements and experience good NFS write performance onto these filesystems given the type of HBA and RAID cards available? 1. http://danielpocock.com/storage-controllers-for-small-linux-nfs-networks -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html