Every day for the last few weeks (since May 30) one partition of a
remote machine fails with an "all estimate failed" error.

The exact error is:

FAILURE AND STRANGE DUMP SUMMARY:
  luna.elaw.org  /zope  lev 0  FAILED [disk /zope, all estimate failed]

If I run "amcheck daily" as the "operator" user before the job runs, I
receive this message during the "Backup Client Hosts Check" portion:

"ERROR: luna.elaw.org: [could not access /dev/ad0s1e (/zope): Permission
denied]"

Despite that error, I cannot find a permissions problem; the permissions
on the root directory are "drwxr-xr-x root:wheel" and on the /zope
directory "drwxr-xr-x root:wheel".  Inside the /zope directory,
everything (at least at the top level) is drwxr-xr-x zope:zope.

I've been backing up both of these systems with Amanda for several years
and haven't ever had estimates for a partition just stop working. I'm
running Amanda version 2.4.5p1, gtar-1.13.25 on the Amanda host; and
gtar-1.16_2 on the remote host. Both hosts are running FreeBSD
4.11-RELEASE-p26.

I've looked in the /tmp/amanda/*.debug files, as suggested in this
thread: <http://forums.zmanda.com/archive/index.php/t-299.html>, but
haven't found anything that looks troublesome.

Anyone have any thoughts about where to look from here?
--
Thanks,

Glenn Gillis
glenn at elaw dot org
ELAW U.S. Information Technology Manager
http://www.elaw.org