[Dovecot] Solved: startup failures "net_listen_unix(...) failed: Invalid argument"

[Timo Sirainen]

On 29.8.2013, at 3.27, C. Mills <dovecot at pyropus.ca> wrote:

> I ran into this and had a bit of trouble tracking a diagnosis down, so here it
> is for the archives in case anyone else runs into this.
> 
> A new installation of dovecot was failing to start, with these messages:
> 
>  $ ./sbin/dovecot 
>  Error: service(imap-urlauth):
>    net_listen_unix(.../var/run/dovecot/token-login/imap-urlauth) failed: 
>    Invalid argument
>  Error: service(auth):
>    net_listen_unix(.../var/run/dovecot/token-login/tokenlogin) failed: Invalid
>    argument
>  Fatal: Failed to start listeners
> 
> Some of the other processes seemed to be starting up fine, and they created
> sockets in the expected dir, but the above two wouldn't.  stracing the
> processes didn't show a lot, but eventually I checked the length of the
> installation path, and found the above two socket paths were exceeding the
> maximum path length limit for Unix sockets -- 108 chars on my Linux boxen.  I
> haven't checked SuS or Posix to see what the standards say the actual minimum
> required size for the maximum path length is -- it might be shorter yet on
> other systems.

This should also make it clearer: http://hg.dovecot.org/dovecot-2.2/rev/07cc79e0041d

So the new error will be net_listen_unix(..) failed: Value too large for defined data type