[horde] Folder Corruption in IMP

[LALOT Dominique]

strange indeed.
IMP is doing very little writes compared to the MTA (lmtp?).

If you stop archiving sent messages, and stop running maintenance task, I
can say that IMP is for nothing in folder corruption (only reading)
Rather look at your file system and courier imap

Good luck

Dom

2009/4/10 Steve Devine <sd at msu.edu>

> Our Environment:
> IMP 4.2.2 - horde-webmail-1.1.5
> Courier IMAP 4.4.1  Maildir format
>
> We have had several instances where IMAP folders have "become corrupted"
> By this I mean they were working OK and the users were happily storing
> emails in them and then one day they go into this folder and discover its
> empty.
> When we look in them the structure is like so:
> 4K drwx------ 2 XXXXXX 1024 4096 Apr 10 01:40 tmp/
> 0K -rw-r--r-- 1 XXXXXX 1024   16 Apr  8 14:19 courierimapuiddb
> 4K drwx------ 2 XXXXXX 1024 4096 Dec  4 08:54 courierimapkeywords/
> 0K -rw-r--r-- 1 XXXXXX 1024   43 Dec  4 08:54 courierimapacl
> 0K -rw------- 1 XXXXXX 1024    0 Jan 22  2008 maildirfolder
>
> As you can see the cur/ and new/ directories are gone. In some cases the
> users lost email(s) are in tmp/ but of course these are only going to be
> emails that were added after the corruption occured. The older emails in cur
> are gone.
> I tested this behavior in Thunderbird and discovered that as long as there
> is a tmp/ directory the client will move the email with no error or
> complaint. So its not just IMP.
> However so far all my users who have filed complaints say they were in our
> IMP installation when all this happened.
>
> So finally I arrive at the question --
> Can anyone think of a reason why this (sudden folder corruption) may be
> happening? The unfortunate angle on this is that many of these users go
> weeks without entering the folder itself and don't know that the corruption
> has occurred.
>
> Thanks
> /sd
>
> Steve Devine
> Email & Storage
> Academic Technical Services
> Michigan State University
>
> --
> Horde mailing list - Join the hunt: http://horde.org/bounties/#horde
> Frequently Asked Questions: http://horde.org/faq/
> To unsubscribe, mail: horde-unsubscribe at lists.horde.org
>



-- 
Dominique LALOT
Ingénieur Systèmes et Réseaux
http://annuaire.univmed.fr/showuser.php?uid=lalot