bin/121684: : dump(8) frequently hangs

Kevin Oberman oberman at
Mon Sep 1 20:13:27 UTC 2008

> Date: Mon, 01 Sep 2008 12:06:35 -0400
> From: Mike Tancsa <mike at>
> At 12:00 PM 9/1/2008, Kevin Oberman wrote:
> >I have a 7-Stable system which has not been able to successfully dump(8)
> >for about 2 months. Since it contains almost no important data that is
> >subject to change, it's not too big a deal, but I worry that other
> >systems might start showing the same problems.
> How does it actually fail ? Do the dump processes stall, or does it 
> error out ?  Did you fsck the file system ? I have seen dump fail 
> when the file system is dirty.  Also, I am not using snapshots.  The 
> flags I use are
> /sbin/dump  -C24 -${BACKUP_LEVEL}anuf - /zoo | /usr/bin/gzip | dd 
> of=/backup/zoo-level-${BACKUP_LEVEL}.gz


Thanks for the suggestion. I'm pretty sure I have done a full fsck,  but
not positive, so I will try one tomorrow. The system is in a location
which is unmanned today due to the holiday, and a full fsck kind of needs
either a human or remote console. 

I have tried both with and without snapshots, so those don't seem to be
the problem.

In any case, I'll know more tomorrow.
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at			Phone: +1 510 486-8634
Key fingerprint:059B 2DDF 031C 9BA3 14A4  EADA 927D EBB3 987B 3751
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 224 bytes
Desc: not available
Url :

More information about the freebsd-stable mailing list