search for: doctlock_use_excl

The parameters listed for nfs installations (mmap_disable, doctlock_use_excl, mail_nfs_storage, mail_nfs_index) - are they necessary for data integrity, and/or do they compensate for NFS latency and improve performance? My understanding is the indexes are a critical part of a dbox storage, but on the other hand having local indexes is a major performance consideration....

Maybe a little off-topic - but I hope not too much. Looking for some insight on setting up Dovecot under a virtual server. In particular, I use VirtualBox - and at the moment, Ubuntu Linux. Initial questions on configuration: Caching. It seems to me - and I'm probably wrong - that running a Linux in a VM on a Linux host, there would be a duplication of caching. That is, the host