Problem with dump stalling

[Christoph Schug]

On Wed, Oct 08, 2008, David Peall wrote:

> I'm running 7.0-RELEASE-p4 and trying to backup to an external USB
> drive.
> 
> I'm using the following command
> 
> dump -a0Lf /backup/diskimages/root /dev/mfid0s1a
[...]
> But it just stops at a random percentage,  the system continues to run
> and the processes are killable?

This is a know bug which mainly affects multi-core CPU systems. It is
fixed in RELENG_7, see also PR bin/121684 [1] where the relevant patch
is referenced.

[1] http://www.freebsd.org/cgi/query-pr.cgi?pr=bin/121684

-cs