Re: Cyrus IMAP on NFS

Hello mates!


Apoligies for so big delay.... have been in a high load work days.... We 
have finally declined using NFS,


Thanks a lot to all!!

Best regards,


El 9/2/17 a las 10:25, Niels Dettenbach via Info-cyrus escribió:
> Am Mittwoch, 8. Februar 2017, 17:24:19 CET schrieb Egoitz Aurrekoetxea via
> Info-cyrus:
>> I think it should be very similar to using a local filesystem... Does
>> anyone can tell some experience in this config?..
> I know one older "smaller" cyrus setup with i.e. 100 IMAP/POP-Users which has
> it's complete spool and db (!) on NFSv3 over a Fast Ethernet Switch what works
> quite OK (as long as we do not want to place a backup restore of the whole
> spool over that NFS which is slow).
>
> The mount is just default but relatime and local_lock=none which may be
> suboptimal by performance - it could make sense to held locking local only or
> to disable it completely if you just have one NFS Client with a "single"
> CYRUS. It may make sense to disable locking (at least remote locks) as it may
> not be required in that scenario.
>
> Holding the db locally could improve performance, but it seems that the OS
> caching / buffering mechanisms are "enough" there in that old setup.
>
> Any further hints / experiences here for different NFS mount options / locking
> options are welcome - until today we do not run any further cyrus on NFS.
>
> It makes sense to monitor the cyrus services (service based) and the NFS mount
> and if it fail's, you should take care to repair the NFS mount and restart
> cyrus. Your cyrus conf should have a recover line within start and after such
> a "crash" a cyrus "reconstruct" run could make sense too.
>
> The spooler before LMTP held all messages qeued if the LMTP is not working
> properly.
>
> many thanks and best regards,
>
>
> Niels.
>
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