Bug 38464 – Dovecot index files on NFS

Bug 38464 - Dovecot index files on NFS


Summary:	Dovecot index files on NFS

Status:	CLOSED FIXED

Product:	UCS
Classification:	Unclassified
Component:	Mail - Dovecot
Version:	UCS 4.0
Hardware:	Other Linux

Importance:	P5 normal (vote)
Target Milestone:	---
Assigned To:	Daniel Tröder
QA Contact:	Sönke Schwardt-Krummrich

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Depends on:
Blocks:	34839
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Reported:	2015-05-06 16:31 CEST by Daniel Tröder
Modified:	2015-07-09 18:13 CEST (History)
CC List:	2 users (show)

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Description Daniel Tröder

2015-05-06 16:31:50 CEST

Basically mmap_disable=yes.
As UCS uses lockd, lock_method=dotlock is not needed.

See http://wiki2.dovecot.org/NFS

Comment 1 Daniel Tröder

2015-05-13 16:58:48 CEST

Commit: 60725

Auto-detection of the storage for mail and index files is not done. There should be some advise in the maual/SDB on how to use those variables, when users wants to store their mails/indexes on NFS/clusterfs, including the link to the relevant Dovecot page.

Introduces UCRVs:
* mail/dovecot/process/mmap_disable
* mail/dovecot/process/dotlock_use_excl
* mail/dovecot/process/mail_fsync
* mail/dovecot/process/mail_nfs_storage
* mail/dovecot/process/mail_nfs_index
* mail/dovecot/process/lock_method

When mail_nfs_index is set to "yes", mmap_disable=yes and mail_fsync=always are forcibly set, the UCRVs are not changed though.

Comment 2 Daniel Tröder

2015-06-29 14:07:33 CEST

Commit 61547 adds the option (UCRV mail/dovecot/location/separate_index) to store index files separated from mail files on the local disk. Yields better performance if mail storage is on NFS. Default is "no".

Comment 3 Sönke Schwardt-Krummrich

2015-07-08 00:52:11 CEST

The settings are configurable via UCR. The default settings are ok.
→ VERIFIED

Comment 4 Janek Walkenhorst

2015-07-09 18:13:02 CEST

<http://errata.univention.de/ucs/4.0/237.html>