dovecot - Nov 2010 - maildir maintenance?

Hi, I'm running version 1.2.15 (so no doveadm) with around 6000 maildir
users, some of which are very large.  For completeness, the details of
the setup are as follows: 
- The maildirs are stored via NFS.
- The indexes are on a volume local to the dovecot server.
- Only one IMAP server currently.
- A separate sendmail/procmail server delivers via NFS.

I recently wrote the attached script (could probably be improved) meant
in theory to be run as a nightly cron job to do the follow:
1) Remove old messages marked as deleted.
(I didn't really like the expunge/trash plugins the last time I looked
at them.)
2) Rebuild the indexes to account of those changes.
(So that the users aren't delayed by dovecot rebuilding them.)
3) Rebuild FTS indexes.
(Again to avoid delay.)
4) Rebuild the maildirsize file.
(It seems to become slightly inaccurate over time.)

To the devs, I'm wondering if this seems sane?

To other users of dovecot, I'm wondering what, if any sort of
maintenance operations you tend to do in your setups?

Thanks,
Brian
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On 24.11.2010, at 2.55, Brian Kroth wrote:
> Hi, I'm running version 1.2.15 (so no doveadm)
You could build Dovecot v2.0 and only use doveadm binary from it.
> I recently wrote the attached script (could probably be improved) meant
> in theory to be run as a nightly cron job to do the follow:
..
> To the devs, I'm wondering if this seems sane?
Looks about ok. The main thing I'm worried is what happens if user creates
mailboxes containing " or ' or ` characters.

On Tue, 2010-11-23 at 20:55 -0600, Brian Kroth wrote:

> 
> I recently wrote the attached script (could probably be improved) meant
> in theory to be run as a nightly cron job to do the follow:
> 1) Remove old messages marked as deleted.
> (I didn't really like the expunge/trash plugins the last time I looked
> at them.)
> 2) Rebuild the indexes to account of those changes.
> (So that the users aren't delayed by dovecot rebuilding them.)
> 3) Rebuild FTS indexes.
> (Again to avoid delay.)
> 4) Rebuild the maildirsize file.
> (It seems to become slightly inaccurate over time.)
> 
> To the devs, I'm wondering if this seems sane?
> 
> To other users of dovecot, I'm wondering what, if any sort of
> maintenance operations you tend to do in your setups?

Cleanup spam and trash folders is really all needs doing... I wrote this
years ago and its never let us down, it could be written entirely in
perl without system calls, but that requires a lot more code, I like
keeping it simple, as it leaves little to go wrong,  and I believe that
if it aint borked, don't bork it, kinda thing :) 


system("/usr/bin/find /var/vmail/*/*/*/*/*/Maildir/.Trash/ -name
\"*,ST
\" -mtime +7 -print | /usr/bin/perl -nle 'unlink;'");
system("/usr/bin/find /var/vmail/*/*/*/*/*/Maildir/.Junk/ -name
\"*,S\"
-mtime +30 -print | /usr/bin/perl -nle 'unlink;'");

@olddirs = `/usr/bin/find /var/vmail/*/*/*/*/*/Maildir/.Trash.* -type d
-mtime +7`;
if ((!@olddirs) or (@olddirs =~ "No such" )) {
        print "nothing to do\n";
} else {
        use File::Path qw(remove_tree);
        foreach $odirdel (@olddirs){
                chomp $odirdel;
                print "Found: $odirdel \n";
                remove_tree($odirdel);
        }
}


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