On 18.1.2012, at 19.54, Mark Moseley wrote: > I'm in the middle of working on a Maildir->mdbox migration as well, > and likewise, over NFS (all Netapps but moving to Sun), and likewise > with split LDA and IMAP/POP servers (and both of those served out of > pools). I was hoping doing things like setting "mail_nfs_index = yes" > and "mmap_disable = yes" and "mail_fsync = always/optimized" would > mitigate most of the risks of index corruption,
They help, but aren't 100% effective and they also make the performance worse. > as well as probably > turning indexing off on the LDA side of things You can't turn off indexing with dbox. > --i.e. all the > suggestions at http://wiki2.dovecot.org/NFS. Is that definitely not > the case? Is there anything else (beyond moving to a director-based > architecture) that can mitigate the risk of index corruption? In our > case, incoming IMAP/POP are 'stuck' to servers based on IP persistence > for a given amount of time, but incoming LDA is randomly distributed. What's the problem with director-based architecture?
