Alessio Cecchi wrote: [...] > Have you already try to run NFSv4? it's in place on a (very) small sample of mailboxes in dbox format, no issues up to now (Debian Wheezy mainline kernel)
> When we switch to netapp and nfsv4 we had many problems (lock problems > and instability) and we had to go immediately to NFSv3. I don't know if > was a netapp problem or nfs client (Debian with 2.6 kernel), now we are > using Centos 6 as NFS client and we should re-try to mount mailbox as nfsv4. when you've had problems, the "delegation feature" was active on Netapp filers? (AFAIK it is disabled by default) you had a look here for known bugs? https://kb.netapp.com/support/index?id=3014338&page=content ciao -brd