[Dovecot] 2.0.beta4, Panic: stream doesn't support seeking backwards (and beta5 too)

[Mark Sapiro]

On 5/31/2010 2:47 PM, Timo Sirainen wrote:
> On 31.5.2010, at 22.41, Mark Sapiro wrote:
> 
>> What I don't understand is whether this is strictly the client's 
>> problem, or if there is some issue in Dovecot as well. If there is
>> a Dovecot issue, I can try to collect and report more information
>> about these Panics if that would be helpful.
> 
> All Dovecot crashes are bugs. The problem with this panic is that I
> just can't reproduce it, so I don't really have much ideas what
> exactly causes it.. You mentioned just connecting with K9 can cause
> it, but that's not what Juergen's backtrace showed. Maybe the step
> you could do is to get gdb backtrace?
> http://dovecot.org/bugreport.html And hopefully manage to reproduce
> it somehow easily? Also rawlog from such crashing session could be
> helpful too (see my previous mail).


Thanks Timo,

I saw your exchange with Juergen after I posted. I am working now on
setting up rawlog, and I will try to get a gdb backtrace too.

I am having problems setting up rawlog. I need some help.

I tried

protocol imap {
  mail_executable = /usr/local/libexec/dovecot/rawlog
/usr/local/libexec/dovecot/imap
...

and got a warning and I don't know if it was accepted or not, but it was
not logging.

I then tried

service imap {
  executable = /usr/local/libexec/dovecot/rawlog
/usr/local/libexec/dovecot/imap
 ...

Which is accepted, but it still doesn't log.

I then tried changing

passdb {
  driver = passwd-file
  args = /usr/local/etc/dovecot.passwd
}

first to

passdb {
  driver = passwd-file
  args = home=/home/%u /usr/local/etc/dovecot.passwd
}

and then to

passdb {
  driver = passwd-file
  args = home=/home/%u /usr/local/etc/dovecot.passwd
  home = /home/%u
}

But neither of those work, but setting mail_debug = yes shows that the
home directory is as expected:

May 31 15:34:21 sbh16 dovecot: imap(mark): Debug: Effective uid=501,
gid=501, home=/home/mark

yet nothing gets written in /home/mark/dovecot.rawlog

drwxrwxr-x 2 mark mark 4096 May 31 14:46 /home/mark/dovecot.rawlog/

(mark is uid 501).

-- 
Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan