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Re: pkg/42607 (pkg_add hangs in ftp when there are dependencies (multiple packages))
The following reply was made to PR pkg/42607; it has been noted by GNATS.
From: David Holland <dholland-pbugs%netbsd.org@localhost>
Subject: Re: pkg/42607 (pkg_add hangs in ftp when there are dependencies
Date: Mon, 17 May 2010 04:24:43 +0000
On Sun, May 16, 2010 at 07:50:04PM +0000, Louis Guillaume wrote:
> The update begins fine and starts processing all the packages. But then
> I start to get ftp connection failures as in "connection refused". Even
> on a manually executed "ftp -a build-machine". inetd on the ftp server
> starts refusing ftp connections!
inetd has a rate-limiting (mis?)feature; are you triggering it? (Check
on the ftp server for a message like "max spawn rate" or "spawning too
One possibility that the rate-limiting code in the inetd on your ftp
server is broken. That code doesn't get exercised much, and I dimly
recall some problems with it in the Linux inetd fork ages ago which
might or might not have been fixed in NetBSD. The system logs on the
ftp server should be able to show if this is the case, because each
new ftp connection seen by inetd should get logged.
It's also possible that if you're downloading a lot of really small
packages over a really fast network, a fresh connection for each could
generate enough connections to stop inetd. That would surprise me
some, and I would have thought pkg_add would be using only one ftp
connection and keeping it open for all the packages. But if this is
the problem you can increase the limit by changing "nowait" to
"nowait:256" (or some suitably large number, see inetd.conf(5)) on the
ftp lines in inetd.conf.
Otherwise, pkg_add must be doing something ~broken...
David A. Holland
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