dovecot - Mar 2007 - rc27 assert, mbox format

Timo,

After several days of flawless work, rc27 gave an assert/core 
yesterday:

Mar 19 00:10:46 karst dovecot: [ID 107833 mail.error] IMAP(user): file
mbox-sync-rewrite.c: line 423: assertion failed: (need_space ==
(uoff_t)-mails[idx].space)
Mar 19 00:10:46 karst dovecot: [ID 107833 mail.error] IMAP(user): Raw backtrace:
0x8a51c -> 0x473f4 -> 0x479b0 -> 0x41c50 -> 0x42430 -> 0x431d4
-> 0x43dac -> 0x44040 -> 0x2aa70 -> 0x2afec -> 0x2337c ->
0x23508 -> 0x235f0 -> 0x90c18 -> 0x9043c -> 0x2cfac -> 0x1dbe8

I could see nothing wrong with the user's mailbox, it was not
corrupted.

My setup: Solaris 10 sparc, mbox format, INBOX NFSv4 mounted from
another S10 sparc system, no disk quotas, ZFS filesystem for both
the INBOX filesystem and the user's home directory.  Unfortunately,
I compiled dovecot with Sun's cc compiler, so the gdb traceback is
fairly useless.  I need to go back to gcc.

Jeff Earickson
Colby College

On Mon, 2007-03-19 at 09:31 -0400, Jeff A. Earickson
wrote:
> 
> Mar 19 00:10:46 karst dovecot: [ID 107833 mail.error] IMAP(user): file
> mbox-sync-rewrite.c: line 423: assertion failed: (need_space =>
(uoff_t)-mails[idx].space)
Hmm. A bit dangerous to do this many changes to mbox code now that it
finally seemed to work pretty well, but..: 

1) http://dovecot.org/list/dovecot-cvs/2007-March/008271.html
2) http://dovecot.org/list/dovecot-cvs/2007-March/008273.html

It doesn't fix anything, but it does more error checking and gives a
better error message instead of just the assert.

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