>> At a random time (may be hours, days or weeks) the main couriertcpd
>> keeps running and accepting connections (until the max clients are
>> reached) but the childs processess never ends.
>> [...]
>> 2) strace for a child couriertcpd process while on start of the lock
>> [...]
>> 17:46:43.758570 read(4, ""..., 2446) = 0
>> 17:46:43.758654 read(4, ""..., 2446) = 0
>> 17:46:43.758762 read(4,
>> "\1\0\0\0\0\0\0\0\216\t\0\0\0\0\0\0r6\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
>> 2446) = 2446
>> 17:46:43.759082 getsockname(5, {sa_family=AF_INET6, sin6_port=htons(25),
>
> If that is called before getsockname, it means it is in bdbobj_open,
> right? Are processes starving because of some locking mechanism?
I think at this point the db (smtpaccess.dat) is already open, the hang is
when
the process makes querys.
As I could trace:
. tcpd/tcpd.c:
function "accepted" calls "allowaccess"
function "allowaccess" calls "doallowaccess"
function "doallowaccess" calls "chkaccess"
. tcpd/tcpdaccess.c:
function "chkacess" calls "dbobj_fetch"
. bdbobj/bdbobj.c:
function "dbobj_fetch" calls "doquery"
** The process get locked on a infinity loop at "doquery" function (
for (;;) )
function "doquery" calls "dofetch"
function "dofetch" calls "(*obj->dbf->get)"
From here I could not trace anymore, but I guess it is a call for the
gdbm library.
The fetch is never returning successfully. So the function get locked on
the loop.
May be its some lock at the file or a bug at the library, but since I
could not trace more
I send the message to the list.
> Is it bdb4? Is it NFS mounted?
> (http://www.oracle.com/technology/documentation/berkeley-db/db/ref/env/remote.html)
No, all smtpaccess.dat files are local.
Some mailboxes are NFS mounted, but at the point of the hang no NFS mounted
file is accessed.
Marcus
------------------------------------------------------------------------------
SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada.
The future of the web can't happen without you. Join us at MIX09 to help
pave the way to the Next Web now. Learn more and register at
http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/
_______________________________________________
courier-users mailing list
[email protected]
Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
