dovecot - Mar 2023 - index locally

Hello,

Do you know if is possible to store indexes locally instead of NFS in
dovecot 2.2.7 ?

Thanks.
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> Do you know if is possible to store indexes locally instead of NFS in
dovecot 2.2.7 ?
Yes you can set different paths for mail and index storage.

   mail_location =
maildir:/mnt/email/%n/_folders:INDEX=/local/email/%n/_dovecot:CONTROL=/local/email/%n/_dovecot

However in my experience when i did this the indexes seemed to have issues
keeping updated across multiple machines. If server1 accepted LMTP mail from
postfix and the user was checking IMAP mail on server2, they weren't always
notified of the new mail delivery. So i switched back to keeping indexes on NFS.

Disclosure, dovecot warns against keeping index files on a file share AND
allowing a user to be logged into two different servers at the same time
accessing those same indexes at the same time, you can run into index
corruption. This is what director is supposed to solve by keeping users logging
in from multiple devices connected to the same backend server so the indexes
aren't being accessed by multiple servers at the same time.