dovecot - Jan 2006 - Dovecot index issues (Solaris/Thunderbird)

Folks -

My setup is that my mail is filed (by procmail) in ~/.mail/Maildir, an NFS
filesystem.  But I'm running Dovecot (1.0alpha5) on my local machine (as
myself on port 2143), just to serve this mail to my browser (Thunderbird 1.0.2).

The NFS data is on a netapp which seems to be creating .nfs files LIKE CRAZY.  I
expect these are the remnants of lock files, so I'm trying to move my
indexes onto local disk.  To that end, I've created /var/tmp/mario/dovecot
and put the following into my dovecot.conf:

default_mail_env = maildir:%h/.mail/Maildir:INDEX=/var/tmp/mario/dovecot

Dovecot happily makes index files, but then fails to serve some of my subscribed
folders!

Thunderbird is less than helpful in telling me what's going wrong, but
dtmail shows that dovecot is reporting "out of sync" and a couple
other errors (UID out of sequence), then closing the connection (for those
folders).  This may happen only after Thunderbird has tried to open the folder
that I see these errors with dtmail:

Dovecot ready.
[UNSEEN 227] First unseen.
[UIDNEXT 341] Predicted next UID

IMAP connection broken (server response)
No-op dead stream
[CLOSED] No-op dead stream

I've turned mmap off and set locking to fcntl.


As a last resort, I've turned indexes off 
default_mail_env = maildir:%h/.mail/Maildir:INDEX=MEMORY
but this makes thunderbird reload all headers every time I open a folder, which
takes a very long time.


Any suggestions?  How do I debug this further?

					Mario

On Mon, 2006-01-16 at 16:46 -0700, Mario Nigrovic-rvvk40
wrote:
> default_mail_env = maildir:%h/.mail/Maildir:INDEX=/var/tmp/mario/dovecot
This looks correct.
> Dovecot happily makes index files, but then fails to serve some of my
subscribed folders!
Do you see them in the mailbox list, or don't you just see mails inside
them?
> Thunderbird is less than helpful in telling me what's going wrong, but
dtmail shows that dovecot is reporting "out of sync" and a couple
other errors (UID out of sequence), then closing the connection (for those
folders).  This may happen only after Thunderbird has tried to open the folder
that I see these errors with dtmail:
> 
> Dovecot ready.
> [UNSEEN 227] First unseen.
> [UIDNEXT 341] Predicted next UID
> 
> IMAP connection broken (server response)
> No-op dead stream
> [CLOSED] No-op dead stream
Doesn't Dovecot's logs say anything? Since this looks like Dovecot
closes the connection, and in that case it should have written something
to logs..
> I've turned mmap off and set locking to fcntl.
If indexes are in local disk, that's not needed.
> As a last resort, I've turned indexes off 
> default_mail_env = maildir:%h/.mail/Maildir:INDEX=MEMORY
> but this makes thunderbird reload all headers every time I open a folder,
which takes a very long time.
Thunderbird should be caching the headers locally. If it reloads them
completely, it means the message UIDs have changed. That shouldn't be
happening.

What about ~/.mail/Maildir/dovecot-uidlist file? It should contain
something like:

1 1127056150 5891
31 1059753523.2405.mbox:2,F
32 1059753524.2405.mbox:2,F

The second number in first line (1127056150) is the UIDVALIDITY. Does it
keep changing? The rest of the lines contain <UID> <maildir file>.
Do
their UIDs keep changing?
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