prefork mupdate slaves

[Gary Mills]

On Wed, Nov 21, 2007 at 02:58:11PM -0800, Andrew Morgan wrote:
> With the following service entry on a traditional murder frontend 
> (v2.3.10):
> 
>    mupdate       cmd="/usr/local/cyrus/bin/mupdate" listen="3905" prefork=1
> 
> I notice that 2 mupdate processes are spawned at startup:
> 
> Nov 21 14:43:43 cyrus-fe3 mupdate[6935]: successful mupdate connection to cyrus-mm.onid.oregonstate.edu
> Nov 21 14:43:43 cyrus-fe3 mupdate[6935]: unready for connections
> Nov 21 14:43:43 cyrus-fe3 mupdate[6935]: synchronizing mailbox list with master mupdate server
> Nov 21 14:43:43 cyrus-fe3 mupdate[6931]: successful mupdate connection to cyrus-mm.onid.oregonstate.edu
> Nov 21 14:43:43 cyrus-fe3 mupdate[6931]: unready for connections
> Nov 21 14:43:43 cyrus-fe3 mupdate[6931]: synchronizing mailbox list with master mupdate server
> Nov 21 14:43:48 cyrus-fe3 mupdate[6935]: mailbox list synchronization complete
> Nov 21 14:43:52 cyrus-fe3 mupdate[6931]: mailbox list synchronization complete
> 
> And those 2 mupdate processes remain running.
> 
> If I set prefork=0, then no mupdate processes are ever spawned, as far as 
> I can tell.
> 
> On my old v2.2.13 murder frontends, prefork=1 only causes 1 mupdate 
> process to be spawned.
> 
> Is this a bug?  Should I be concerned that 2 mupdate slaves are running?

I have two on the murder front end as well:

     UID   PID  PPID  C    STIME TTY      TIME CMD
   cyrus   765   708  0   Sep 24 ?       332:49 mupdate
   cyrus   768   708  0   Sep 24 ?        1:35 mupdate

On the murder back end, I actually have three, although one terminates
almost immediately with this error:

  bind: /imap/mupdate/conf/socket/mupdate.target: Address already in use
  bind failed
  service mupdate pid 1595 in READY state: terminated abnormally

I also have `prefork=1' in both places.  This is with cyrus-imapd-2.3.8.

-- 
-Gary Mills-    -Unix Support-    -U of M Academic Computing and Networking-