bin/121684: : dump(8) frequently hangs

[Kevin Oberman]

> Date: Mon, 01 Sep 2008 09:36:11 -0400
> From: Mike Tancsa <mike at sentex.net>
> Sender: owner-freebsd-stable at freebsd.org
> 
> At 05:07 AM 9/1/2008, Derek Kuliński wrote:
> 
> >Now I'm honestly a bit scared about it (even if it will be fixed
> >before 7.1, I'm not sure I'll hurry with the update).
> 
> There have been a number of commits to releng_7 
> that fixed dump issues for me.  A box that used 
> to regularly exhibit hung dump processes have 
> been working fine since April.  e.g. a kernel from
> 7.0-STABLE FreeBSD 7.0-STABLE #4: Wed Apr 30
> 
> does weekly level 0 dumps and daily differential 
> dumps on the file systems below without issue
> % df -i
> Filesystem    1K-blocks      Used     Avail 
> Capacity iused    ifree %iused  Mounted on
> /dev/twed0s1a   2026030    284346   1579602    15%    2937   279685    1%   /
> devfs                 1         1         0 
> 100%       0        0  100%   /dev
> /dev/twed0s1d   5077038    575828   4095048 
> 12%    1197   658257    0%   /tmp
> /dev/twed0s1e  20308398  11072840   7610888 
> 59% 1065406  1572416   40%   /usr
> /dev/twed0s1f  20308398  13275050   5408678 
> 71%   13750  2624072    1%   /var
> /dev/twed0s1g 246875258 
> 186393906  40731332    82% 9118036 22794922   29%   /zoo
> 
> However, you should test and make sure it works for you.

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.

I have no idea why it's failing, though, and I have spent little effort
in troubleshooting it. I'm running 3 week old stable and I'll be
updating to today's RELENG_7 later today.
-- 
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at es.net			Phone: +1 510 486-8634
Key fingerprint:059B 2DDF 031C 9BA3 14A4  EADA 927D EBB3 987B 3751
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