Panic when runing "doveadm mailbox status ... vsize"

[Mark Costlow]

Thank you for pushing me in the right direction!

I originally used "lock_method = dotlock" on this server.  I had
gotten to a point in trouble-shooting where i thought I should
change to fcntl, which I did.  BUT I did not restart dovecot!  I
just did that, and now "vsize" works.

I don't have a theory for why dotlock wouldn't be supported in
that path.

Thanks again,

Mark

On Wed, Jul 20, 2016 at 01:25:44AM +0200, Michael Kliewe wrote:
> Hi Mark,
> 
> Am 19.07.2016 um 21:23 schrieb Mark Costlow:
> > I have converted some test users and they generally work fine.  But
> > when I run "doveadm mailbox status" I get a Panic if I ask for the
> > vsize field (or "all"), but other fields work fine. For example:
> >
> >     # doveadm  mailbox status -u bubbacheex3 "messages" INBOX
> >     INBOX messages=53
> >
> >     # doveadm  mailbox status -u bubbacheex3 "guid" INBOX
> >     INBOX guid=bf976912f3748957761d0100f906a3d0
> >
> >     # doveadm  mailbox status -u bubbacheex3 "unseen" INBOX
> >     INBOX unseen=52
> >
> >     # doveadm  mailbox status -u bubbacheex3 "vsize" INBOX
> >     doveadm(bubbacheex3): Panic: file file-lock.c: line 269: unreached
> >     Abort trap
> >
> Have you checked that line 269 in file-lock.c?
> https://github.com/dovecot/core/blob/master/src/lib/file-lock.c#L269
> 
> Do you have write access to the mail folder of the user?
> 
> I'm not sure anymore, maybe a workaround for me was:
> -o lock_method=fcntl
> Using fcntl instead of dotlock for that command...
> Or I made sure to have write access to the mail folder of the user... Or 
> both.... I don't remember anymore.
> 
> Maybe someone can explain why dotlock is not supported in that code path.
> 
> Michael

-- 
Mark Costlow    | Southwest Cyberport | Fax:   +1-505-232-7975
cheeks at swcp.com | Web:   www.swcp.com | Voice: +1-505-232-7992

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