[Dovecot] nfs flush/fsync config settings problem

[Wesley Huang]

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
>>>
>>
>>