Skip site navigation (1)Skip section navigation (2)
Date:      Thu, 9 Aug 2007 17:04:31 +0300
From:      Nikos Vassiliadis <nvass@teledomenet.gr>
To:        freebsd-questions@freebsd.org
Cc:        Bram Schoenmakers <bramschoenmakers@xs4all.nl>
Subject:   Re: Problem with dump over SSH: Operation timed out
Message-ID:  <200708091704.31952.nvass@teledomenet.gr>
In-Reply-To: <200708091543.11003.bramschoenmakers@xs4all.nl>
References:  <200708091025.43912.bramschoenmakers@xs4all.nl> <200708091213.47740.nvass@teledomenet.gr> <200708091543.11003.bramschoenmakers@xs4all.nl>

Next in thread | Previous in thread | Raw E-Mail | Index | Archive | Help
On Thursday 09 August 2007 16:43, Bram Schoenmakers wrote:
> Op donderdag 09 augustus 2007, schreef u:
> > Try using a much lower MTU, something like 1400 or perhaps lower,
> > just for testing. You should configure this, on both client and
> > server.
> >
> > I'm not familiar with ipf to give the exact rule, but I would allow
> > ALL ICMP traffic, at least for testing purposes. I think this is
> > correct:
> > pass out quick proto icmp from any to any
> > pass in quick proto icmp from any to any
> >
> > somewhere above the "block in log quick on re0 all" rule.
> >
> > Hope this helps a bit
> >
> > Nikos
>
> Thank you for your answer.
>
> I have added the 'pass in for icmp' rule to the firewall (pass out did
> already exist). There was a noticable improvement, the /usr dump came
> much further than before. But at about 80% there was the timeout again.

Strange, is it possible that the filesystem is corrupted and
dump cannot continue and quits?

Keep in mind that dump(8) uses UFS2 snapshots. I don't know
the current status, but in the past, snapshots were not working
that good.

1) Can you dump the file locally?

2) Is scp working?

>
> I tried lowering the MTU value at the server side, but nearly all other
> network traffic stopped working, so that is not the way to go.

Ofcourse, this could be a problem. MTU must be the same
across the ethernet segment. And obviously your upstream
router is administered by your ISP.

Nikos



Want to link to this message? Use this URL: <http://docs.FreeBSD.org/cgi/mid.cgi?200708091704.31952.nvass>