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Hello.
There is two different free scripts available on
http://www.niversoft.com/scripts meant to convert mbox into mdir.
The first one -
http://www.niversoft.com/products/cgscripts/#convert_mailboxes - is
meant to convert all the mailboxes of one account on a live server.
It's quite slow, and a bit risky as it will likely fail if someone
access the account while it's working. Better do a backup of the
account first and follow the instructions on screen carefully.
Basically, this script changes the account default mailbox type to
the new format, then connects trough IMAP, and for each mailbox it
creates a new one of the new type, moves all the messages, then
deletes the old one.
The second one -
http://www.niversoft.com/products/cgscripts/#fast_mailbox_conversion
- is meant to convert a single mailbox independently of the server.
It's recommended to run in when the server is stopped, but it's
possible to run it on a live server too without harm, except for the
INBOX.
This second script reads the mbox file directly and create mdir
files on the fly. It doesn't delete the mbox file afterwards.
We have another series of scripts here to perform, with supervision,
a controlled conversion of all the relevant mailboxes of all
accounts on a server. We successfully converted several servers from
mbox to mdir, and back, on a live system. We only needed to quickly
shut down and restart the CGP server a few times during the session
to ensure critical data was uncached. If this kind of service may
interest you, please contact me offlist.
Regards
Nicolas Hatier
On 2010-09-08 18:16, Wiley Sanders wrote:
Hello
all,
This is a problem that we have been having for a long time with
both Communigate 4.X and the current 5.3 version. About twice per
month, one of my 10,000 users loses all messages in their INBOX.
All messages are alleged to disappear.
The problem is made more difficult because the users are usually
my most clueless, and they usually cannot describe when the
problem occurred or what actions they were taking when it
happened. In many cases it happens overnight. At first I was
convinced it was just clueless users, but I think at least some of
them are victims of some kind of bug or another and not just
accidentally selecting messages for deletion. In only a very few
cases do I actually find "lost" email in their trash.
The one thing they all have in common is that they are all legacy
users with MBOX-format mailboxes (all new users have been MDIR for
several years.) They are almost certainly not using multiple
clients on the same INBOX. The INBOX.mbox file is truncated to
zero length, and new mail begins showing up right away in it. In
come cases the INBOX.bdx file disappears. Most victims seem to be
using the Webmail interface, in fact I have not been able to
confirm that any are using Thunderbird or an IMAP client. Of
course it is a PITA to restore an MBOX file since it has to be
restored in its entirety and usually cannot just be prepended to
the existing INBOX.mbox file.
Both the old and new versions of CGPro were running on Linux, the
current on a brand-new up to date RHEL 5.X server, the older on
SuSe Enterprise 9.
My question is: Is there a setting in CGPro, the Linux OS, or EXT3
I can make to do more aggressive file caching, and perhaps more
atomic file locking?
Alternatively, is there a tool I can use to migrate a user from
MBOX to MDIR format? This problem doesn't seem to happen with MDIR
format inboxes.
Thanks,
-W Sanders
St Marys College of California
http://wsanders.net
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