Mailing List CGatePro@mail.stalker.com Message #94130
From: Paul Chauvet <chauvetp@newpaltz.edu>
Subject: Indexed MDIR Was Re: 2gb mailbox limit???
Date: Wed, 20 Feb 2008 20:07:45 -0500
To: CommuniGate Pro Discussions <CGatePro@mail.stalker.com>
X-Mailer: CommuniGate Pro WebUser v5.1.12
I really wish Stalker would put similar optimizations in the MailDir format, especially indexing.  I hate losing the advantage of smaller differential backups that maildir provided but cannot deal with its performance for large mailboxes.

- Paul


On Wed, 20 Feb 2008 15:21:01 +0000
Communigate Forum <communigate@communik8.net> wrote:
> hi,
>
> even though this can be worked round by using mdir it remains a totally
>artificial limitation that should be removed, stalker themselves have
>optimised the mbox performance and provide indexing for large mbox files, the
>bit that is missing is the size limitation..
>
> 2gb's is now an everyday occurrence not a rare exception..
>
> rup
>
>
> Graeme Fowler wrote:
>> On 20 February 2008 07:00, Shaun Gamble wrote:
>>
>>> I have a mixture of mdir and mbox folders.
>>>
>>
>> I've just done a fairly simple test on our dev platform, which is CGP5.2.0
>>on a 0x2 cluster running RedHat RHEL4 on i386 (therefore 32-bit).
>>
>> I created a 100 meg attachment and sent it to myself, which when encoded
>>makes the message size 136MB (look up how Base64 encoding works for why).
>>
>> I've then created two mailbox folders:
>>
>> 1. mbox
>> 2. mdir
>>
>> Guess what format they're in? ;-)
>>
>> The mbox folder stopped me from exceeding 2GB when appending to it using
>>Webmail.
>>
>> The mdir folder didn't.
>>
>> Looking at it from the OS side, I took the mbox file and appended another
>>500MB of data to it without a problem (using 'cat'), thus taking it over the
>>2GB limit.
>>
>> So I can state quite happily that the issue lies within the application, and
>>probably results from the statement someone made several months ago of the
>>size being monitored using a 32-bit signed integer within the application..
>>
>> Not that any of this really affects me or my users; we make them use mdir
>>for everything anyway so we're not chewing up backup tapes at a rapid rate.
>>If we did use mbox It'd be hard for the users to reach 2GB in one folder
>>anyway, as we quota them well below that!
>>
>> Graeme
>>
>>
>>
>>
>> #############################################################
>> This message is sent to you because you are subscribed to
>> the mailing list <CGatePro@mail.stalker.com>.
>> To unsubscribe, E-mail to: <CGatePro-off@mail.stalker.com>
>> To switch to the DIGEST mode, E-mail to <CGatePro-digest@mail.stalker.com>
>> To switch to the INDEX mode, E-mail to <CGatePro-index@mail.stalker.com>
>> Send administrative queries to <CGatePro-request@mail.stalker.com>
>>
>
> #############################################################
> This message is sent to you because you are subscribed to
> the mailing list <CGatePro@mail.stalker.com>.
> To unsubscribe, E-mail to: <CGatePro-off@mail.stalker.com>
> To switch to the DIGEST mode, E-mail to <CGatePro-digest@mail.stalker.com>
> To switch to the INDEX mode, E-mail to <CGatePro-index@mail.stalker.com>
> Send administrative queries to <CGatePro-request@mail.stalker.com>

 
Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster