dovecot - Aug 2008 - GlusterFS

Hi everybody,

We use a Dovecot setup with GlusterFS. Dovecot 1.1.2 and GlusterFS
1.3.9. I enabled the following options (I don't have posix-locks
translators):

lock_method = dotlock
dotlock_use_excl = no
mmap_disable = yes
mail_nfs_index = yes
mail_nfs_storage = yes

I receive the following error message.

Aug  7 09:38:51 mta2 dovecot: POP3(somebody at domain.tld):
nfs_flush_fcntl:
fcntl(/var/vmail/domain.tld/somebody/Maildir/dovecot.index, F_RDLCK)
failed: Function not implemented

I think that I can disable mail_nfs_index to fix these messages. Has
anybody had the same problem, if so, how did you solve it?

Kind regards,
Jeroen Koekkoek

> We use a Dovecot setup with GlusterFS. Dovecot 1.1.2 and GlusterFS
OT: beside fcntl problem, how is GlusterFS doing for you?
I have some miserable remarks using GlusterFS and FUSE. What about your 
experience?

Pawel

On Aug 7, 2008, at 3:57 AM, Jeroen Koekkoek wrote:
> I receive the following error message.
>
> Aug  7 09:38:51 mta2 dovecot: POP3(somebody at domain.tld):
> nfs_flush_fcntl:
> fcntl(/var/vmail/domain.tld/somebody/Maildir/dovecot.index, F_RDLCK)
> failed: Function not implemented
Dovecot tries to flush kernel's data cache.
> I think that I can disable mail_nfs_index to fix these messages. Has
> anybody had the same problem, if so, how did you solve it?
You could disable mail_nfs_index, but that if the same mailbox is  
accessed concurrently from multiple servers that will probably cause  
index corruption.

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On Aug 11, 2008, at 10:22 AM, Timo Sirainen wrote:
> On Aug 7, 2008, at 3:57 AM, Jeroen Koekkoek wrote:
>
>> I receive the following error message.
>>
>> Aug  7 09:38:51 mta2 dovecot: POP3(somebody at domain.tld):
>> nfs_flush_fcntl:
>> fcntl(/var/vmail/domain.tld/somebody/Maildir/dovecot.index, F_RDLCK)
>> failed: Function not implemented
>
> Dovecot tries to flush kernel's data cache.
You might need

volume plocks
	type features/posix-locks
	subvolumes posix
end-volume

Or equivalent in your glusterfs configuration

>
>
>> I think that I can disable mail_nfs_index to fix these messages. Has
>> anybody had the same problem, if so, how did you solve it?
>
> You could disable mail_nfs_index, but that if the same mailbox is  
> accessed concurrently from multiple servers that will probably cause  
> index corruption.
>
Aria Stewart
aredridel at nbtsc.org