[Dovecot] nfs flush/fsync config settings problem

[Timo Sirainen]

Fixed: http://hg.dovecot.org/dovecot-2.2/rev/9b53f6bf0427

But you shouldn't use mail_nfs_*=yes settings in any case. If you use multiple Dovecot servers, you should use Dovecot director and then you can keep using mail_nfs_*=no. If you use only a single Dovecot server then mail_nfs_*=no works fine also.

On 17.4.2014, at 18.37, Wesley Huang <huang at utsc.utoronto.ca> wrote:

> Hi All,
> 
> I was able to find some time and investigate further.  The culprit has been found:  "mailbox_list_index=yes". We'd like to use the IMAP NOTIFY extension and this option is a must.  But turning on mailbox_list_index with index stored on NFS mounts caused the the error I reported.
> 
> Is it a designed/known behaviour or it is a bug?  Hopefully my email will be caught maintainers' eyes.
> 
> 
> Cheers,
> 
> Wesley
> 
> 
> On 14-04-11 01:41 PM, Wesley Huang wrote:
>> Hi Alessio,
>> 
>> After days sorting the Heartbleed mess, I managed to set up Debian Squeeze amd64 for the test and I'm seeing the same error message:
>> 
>> Fatal: nfs flush requires mail_fsync=always
>> 
>> # doveconf -n | egrep 'fsync|nfs'
>> mail_fsync = always
>> mail_nfs_index = yes
>> mail_nfs_storage = yes
>> 
>> Cheers,
>> 
>> Wesley
>> 
>> On 14-04-03 09:24 AM, Alessio Cecchi wrote:
>>> Hi,
>>> 
>>> I'm using Maildir on Debian 6 64bit, try to "grep" for "fsync" on all configuration files.
>>> 
>>> Try also to install the same dovecot+configuration on Debian 6.
>>> 
>>> Let me know!
>>> Ciao
>>> 
>>> Il 03/04/2014 15:12, Wesley Huang ha scritto:
>>>> Hi Alessio,
>>>> 
>>>> I have 2.2.12 installed in Debian Wheezy amd64 server. mail_fsync is
>>>> specified and detected.  Are you using mbox or maildir or dbox? We're
>>>> using mbox and seeing the error.
>>>> 
>>>> # dovecot --version
>>>> 2.2.12
>>>> 
>>>> # dovecot -n | grep -E 'sync|nfs'
>>>> mail_fsync = always
>>>> mail_nfs_index = yes
>>>> mail_nfs_storage = yes
>>>> 
>>>> 
>>>> # egrep 'nfs|fsync' 10-mail.conf | egrep -v '#'
>>>> mail_fsync=always
>>>> mail_nfs_storage = yes
>>>> mail_nfs_index = yes
>>>> 
>>>> # uname -r
>>>> 3.2.0-4-amd64
>>>> 
>>>> Cheers,
>>>> 
>>>> Wesley
>>>> 
>>>> On 14-04-03 04:22 AM, Alessio Cecchi wrote:
>>>>> Il 08/01/2014 09:23, Troton_admin ha scritto:
>>>>>> Hi,
>>>>>> 
>>>>>> I need to place a maildir storage on a NFS filesystem, so I set up
>>>>>> the config like this:
>>>>>> 
>>>>>> mmap_disable = yes
>>>>>> mail_nfs_storage = yes
>>>>>> mail_nfs_index = yes
>>>>>> mail_fsync = always
>>>>>> lock_method = dotlock (also tried fcntl - local lockd is running, no
>>>>>> success, now using dotlock, to be sure while debugging)
>>>>>> 
>>>>>> The problem is that Dovecot (2.2.9/2.2.10 - the relevant code in
>>>>>> mail-index.c is the same) logs a fatal error and quits the session
>>>>>> (no daemon crash/coredump).
>>>>> 
>>>>> Hi,
>>>>> 
>>>>> I have a similar configuration but with dovecot 2.2.12 and NFS for me
>>>>> works fine. Have you insert the "mail_fsync = always" in the right
>>>>> place? Is there only one "mail_fsync" setting in your config? First
>>>>> check this:
>>>>> 
>>>>> root at mx:/etc/dovecot# grep mail_fsync /etc/dovecot/ -R
>>>>> conf.d/10-mail.conf:mail_fsync = always
>>>>> 
>>>>> root at mx:/etc/dovecot# dovecot -n | grep -E 'sync|nfs'
>>>>> mail_fsync = always
>>>>> mail_nfs_index = yes
>>>>> mail_nfs_storage = yes
>>>>> maildir_very_dirty_syncs = yes
>>>>> 
>>>>> # 2.2.12: /etc/dovecot/dovecot.conf
>>>>> # OS: Linux 2.6.32-5-amd64 x86_64 Debian 6.0.9
>>>>> 
>>>>> Let me know.
>>>>> Ciao
>>>> 
>>> 
>>>