Hi,-- Steinar Bang <[EMAIL PROTECTED]> is rumored to have mumbled on 17. Januar 2006 20:30:19 +0100 regarding cyrreconstruct and resurrected deleted/moved:
Platform: Intel PII
debian sarge
cyrus21-imapd 2.1.18-1
Today my imap folder user.myuser.sub was trashed. I did
cyrreconstruct user.myuser.sub
to rebuild it.
What I found then was that it had a lot more articles than before the
crash.
That particular folder had slowed down quite a bit, so during
Christmas I decided to clean it up. From my imap client Gnus I
deleted (or believed I deleted) everything I didn't want. Then I
moved the rest to the user.myuser.sub.arkiv folder.
I bet your client hides deleted messages, but doesn't actually expunge the folder. There is no "move" in IMAP. It's copy+delete, where delete only sets the "deleted" flag. You need to expunge the folder to actually delete the messages.
After the cyrreconstruct those articles were back.
I guess the flags were lost, so all previously deleted messages were shown by your client.
That is: I'm not _entirely_ sure the deleted articles were back, but I am sure that the moved articles are back, because I can see them and grep them in both the directory /var/spool/cyrus/mail/s/user/myuser/sub/ and the directory /var/spool/cyrus/mail/s/user/myuser/sub/arkiv/ on the server.From the looks of it, these duplicates are hardlinked.
That's a little suprising, but I just verified that it actually happens when you copy a message. I wasn't aware of that :-)
So my questions are: Is there a way short of redoing the Christmas cleanup from an email client to get back to the state before the massive delete/move? Ie. what if I wrote a perl script that unlinked everything that had more than one hardlink in /var/spool/cyrus/mail/s/user/myuser/sub/ and then did cyrreconstruct?
That might work, but you're on your own with it ... -- Sebastian Hagedorn - RZKR-R1 (Flachbau), Zi. 18, Robert-Koch-Str. 10 Zentrum für angewandte Informatik - Universitätsweiter Service RRZK Universität zu Köln / Cologne University - Tel. +49-221-478-5587
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