Re: NFSv4 and Maildir

2016-10-03 Thread Joseph Tam
Noel Butler writes: I found the same thing, and turning off write delegation seemed to have solved the problem. I still don't know why, though. write delegation is disabled by default on NetApp with v4, or have they changed this now? I think this is still the case: when I exported NFSv4, I

Re: NFSv4 and Maildir

2016-09-30 Thread Noel Butler
On 01/10/2016 08:27, Joseph Tam wrote: we have a setup with (CentOS 6) Director+Dovecot, Maildir as storage on NetApp NFS v3. Every time I try to switch to NFS v4 I found issue with lock (and others). So for me NFSv4 with Maildir is "unstable" or need a fine tuning that I don't know. I foun

Re: NFSv4 and Maildir

2016-09-30 Thread Joseph Tam
we have a setup with (CentOS 6) Director+Dovecot, Maildir as storage on NetApp NFS v3. Every time I try to switch to NFS v4 I found issue with lock (and others). So for me NFSv4 with Maildir is "unstable" or need a fine tuning that I don't know. I found the same thing, and turning off write dele

Re: NFSv4 and Maildir

2016-09-30 Thread Alessio Cecchi
Il 23/09/2016 14:31, Robert Blayzor ha scritto: Recently moving to newer storage platforms for mailbox storage so looking at moving mounts from NFSv3 with lots of issues with locking and caching to NFSv4. There seems to be a lot of benefits to v4 along with some other new features, namely “de